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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="coagulation process"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 15297</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: coagulation process</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15297</span> Lamb Wave-Based Blood Coagulation Measurement System Using Citrated Plasma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyunjoo%20Choi">Hyunjoo Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeonghun%20Nam"> Jeonghun Nam</a>, <a href="https://publications.waset.org/abstracts/search?q=Chae%20Seung%20Lim"> Chae Seung Lim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Acoustomicrofluidics has gained much attention due to the advantages, such as noninvasiveness and easy integration with other miniaturized systems, for clinical and biological applications. However, a limitation of acoustomicrofluidics is the complicated and costly fabrication process of electrodes. In this study, we propose a low-cost and lithography-free device using Lamb wave for blood analysis. Using a Lamb wave, calcium ion-removed blood plasma and coagulation reagents can be rapidly mixed for blood coagulation test. Due to the coagulation process, the viscosity of the sample increases and the viscosity change can be monitored by internal acoustic streaming of microparticles suspended in the sample droplet. When the acoustic streaming of particles stops by the viscosity increase is defined as the coagulation time. With the addition of calcium ion at 0-25 mM, the coagulation time was measured and compared with the conventional index for blood coagulation analysis, prothrombin time, which showed highly correlated with the correlation coefficient as 0.94. Therefore, our simple and cost-effective Lamb wave-based blood analysis device has the powerful potential to be utilized in clinical settings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustomicrofluidics" title="acoustomicrofluidics">acoustomicrofluidics</a>, <a href="https://publications.waset.org/abstracts/search?q=blood%20analysis" title=" blood analysis"> blood analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation" title=" coagulation"> coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=lamb%20wave" title=" lamb wave"> lamb wave</a> </p> <a href="https://publications.waset.org/abstracts/90894/lamb-wave-based-blood-coagulation-measurement-system-using-citrated-plasma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90894.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">340</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15296</span> Modeling of Coagulation Process for the Removal of Carbofuran in Aqueous Solution </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roli%20Saini">Roli Saini</a>, <a href="https://publications.waset.org/abstracts/search?q=Pradeep%20Kumar"> Pradeep Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A coagulation/flocculation process was adopted for the reduction of carbamate insecticide (carbofuran) from aqueous solution. Ferric chloride (FeCl<sub>3</sub>) was used as a coagulant to treat the carbofuran. To exploit the reduction efficiency of pesticide concentration and COD, the jar-test experiments were carried out and process was optimized through response surface methodology (RSM). The effects of two independent factors; i.e., FeCl<sub>3</sub> dosage and pH on the reduction efficiency were estimated by using central composite design (CCD). The initial COD of the 30 mg/L concentrated solution was found to be 510 mg/L. Results exposed that the maximum reduction occurred at an optimal condition of FeCl<sub>3</sub> = 80 mg/L, and pH = 5.0, from which the reduction of concentration and COD 75.13% and 65.34%, respectively. The present study also predicted that the obtained regression equations could be helpful as the theoretical basis for the coagulation process of pesticide wastewater. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbofuran" title="carbofuran">carbofuran</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation" title=" coagulation"> coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=response%20surface%20methodology" title=" response surface methodology"> response surface methodology</a> </p> <a href="https://publications.waset.org/abstracts/50421/modeling-of-coagulation-process-for-the-removal-of-carbofuran-in-aqueous-solution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50421.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">324</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15295</span> Comparison of Chemical Coagulation and Electrocoagulation for Boron Removal from Synthetic Wastewater Using Aluminium</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kartikaningsih%20Danis">Kartikaningsih Danis</a>, <a href="https://publications.waset.org/abstracts/search?q=Yao-Hui%20Huang"> Yao-Hui Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Various techniques including conventional and advanced have been employed for the boron treatment from water and wastewater. The electrocoagulation involves an electrolytic reactor for coagulation/flotation with aluminium as anode and cathode. There is aluminium as coagulant to be used for removal which may induce secondary pollution in chemical coagulation. The purpose of this study is to investigate and compare the performance between electrocoagulation and chemical coagulation on boron removal from synthetic wastewater. The effect of different parameters, such as pH reaction, coagulant dosage, and initial boron concentration were examined. The results show that the boron removal using chemical coagulation was lower. At the optimum condition (e.g. pH 8 and 0.8 mol coagulant dosage), boron removal efficiencies for chemical coagulation and electrocoagulation were 61% and 91%, respectively. In addition, the electrocoagulation needs no chemical reagents and makes the boron treatment easy for application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boron%20removal" title="boron removal">boron removal</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20coagulation" title=" chemical coagulation"> chemical coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=aluminum" title=" aluminum"> aluminum</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-coagulation" title=" electro-coagulation "> electro-coagulation </a> </p> <a href="https://publications.waset.org/abstracts/22930/comparison-of-chemical-coagulation-and-electrocoagulation-for-boron-removal-from-synthetic-wastewater-using-aluminium" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22930.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">404</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15294</span> The Effectiveness of Pretreatment Methods on COD and Ammonia Removal from Landfill Leachate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Poveda">M. Poveda</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Lozecznik"> S. Lozecznik</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Oleszkiewicz"> J. Oleszkiewicz</a>, <a href="https://publications.waset.org/abstracts/search?q=Q.%20Yuan"> Q. Yuan </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The goal of this experiment is to evaluate the effectiveness of different leachate pre-treatment options in terms of COD and ammonia removal. This research focused on the evaluation of physical-chemical methods for pre-treatment of leachate that would be effective and rapid in order to satisfy the requirements of the sewer discharge by-laws. The four pre-treatment options evaluated were: air stripping, chemical coagulation, electro-coagulation and advanced oxidation with sodium ferrate. Chemical coagulation reported the best COD removal rate at 43%, compared to 18 % for both air stripping and electro-coagulation, and 20 % for oxidation with sodium ferrate. On the other hand, air stripping was far superior to the other treatment options in terms of ammonia removal with 86 %. Oxidation with sodium ferrate reached only 16 %, while chemical coagulation and electro-coagulation removed less than 10 %. When combined, air stripping and chemical coagulation removed up to 50 % COD and 85 % ammonia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=leachate%20pretreatment" title="leachate pretreatment">leachate pretreatment</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20stripping" title=" air stripping"> air stripping</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20coagulation" title=" chemical coagulation"> chemical coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-coagulation" title=" electro-coagulation"> electro-coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a> </p> <a href="https://publications.waset.org/abstracts/28457/the-effectiveness-of-pretreatment-methods-on-cod-and-ammonia-removal-from-landfill-leachate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28457.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">843</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15293</span> Optimal Temperature and Time for Lactic Coagulation of Milk Containing Antibiotic: Evaluation of Yogurt Fermentation Parameters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arezoo%20Ghadi">Arezoo Ghadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Adonis%20Pishdadian"> Adonis Pishdadian</a>, <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Zahedi"> Ehsan Zahedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Vahideh%20Rashedi"> Vahideh Rashedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mozhgan%20Mohammadi"> Mozhgan Mohammadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The presence of antibiotics in milk is one of the problems of dairy production units, especially yogurt and cheese, which leads to a decrease in lactic coagulation. Here, to assess the incubation conditions for the fermentation of milk containing antibiotics, concentrations of 50, 75, 100, and 200 ppb of tetracycline were added to each liter of milk. Inoculation process with starter culture performed at three temperatures of 35°C, 45°C, and 50°C. Afterward, pH, acidity, oxidation-reduction potential, and lactic coagulation of yogurt were evaluated. The results showed the existence of antibiotics in milk affects the quality and physicochemical properties of yogurt. However, antibiotic concentration and change in incubation temperature play a crucial role in the lactic coagulation of yogurt, such that the best lactic coagulation was observed at 50°C and a concentration of 50ppb. Hence, for tetracycline concentrations less than 75ppb, a process temperature of 50°C and incubation time of ~10 h recommend for fermentation of milk containing antibiotics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antibiotics%20residues" title="antibiotics residues">antibiotics residues</a>, <a href="https://publications.waset.org/abstracts/search?q=yogurt" title=" yogurt"> yogurt</a>, <a href="https://publications.waset.org/abstracts/search?q=fermentation%20parameters" title=" fermentation parameters"> fermentation parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=incubation%20temperature" title=" incubation temperature"> incubation temperature</a> </p> <a href="https://publications.waset.org/abstracts/151965/optimal-temperature-and-time-for-lactic-coagulation-of-milk-containing-antibiotic-evaluation-of-yogurt-fermentation-parameters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151965.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">99</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15292</span> Effect of Thermal Energy on Inorganic Coagulation for the Treatment of Industrial Wastewater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abhishek%20Singh">Abhishek Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajlakshmi%20Barman"> Rajlakshmi Barman</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanmay%20Shah"> Tanmay Shah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coagulation is considered to be one of the predominant water treatment processes which improve the cost effectiveness of wastewater. The sole purpose of this experiment on thermal coagulation is to increase the efficiency and the rate of reaction. The process uses renewable sources of energy which comprises of improved and minimized time method in order to eradicate the water scarcity of the regions which are on the brink of depletion. This paper includes the various effects of temperature on the standard coagulation treatment of wastewater and their effect on water quality. In addition, the coagulation is done with the mix of bottom/fly-ash that will act as an adsorbent and removes most of the minor and macro particles by means of adsorption which not only helps to reduce the environmental burden of fly ash but also enhance economic benefit. Also, the method of sand filtration is amalgamated in the process. The sand filter is an environmentally-friendly wastewater treatment method, which is relatively simple and inexpensive. The existing parameters were satisfied with the experimental results obtained in this study and were found satisfactory. The initial turbidity of the wastewater is 162 NTU. The initial temperature of the wastewater is 27 C. The temperature variation of the entire process is 50 C-80 C. The concentration of alum in wastewater is 60mg/L-320mg/L. The turbidity range is 8.31-28.1 NTU after treatment. pH variation is 7.73-8.29. The effective time taken is 10 minutes for thermal mixing and sedimentation. The results indicate that the presence of thermal energy affects the coagulation treatment process. The influence of thermal energy on turbidity is assessed along with renewable energy sources and increase of the rate of reaction of the treatment process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorbent" title="adsorbent">adsorbent</a>, <a href="https://publications.waset.org/abstracts/search?q=sand%20filter" title=" sand filter"> sand filter</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20coagulation" title=" thermal coagulation"> thermal coagulation</a> </p> <a href="https://publications.waset.org/abstracts/69511/effect-of-thermal-energy-on-inorganic-coagulation-for-the-treatment-of-industrial-wastewater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69511.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15291</span> Treatment of Tannery Effluents by the Process of Coagulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gentiana%20Shegani">Gentiana Shegani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coagulation is a process that sanitizes leather effluents. It aims to reduce pollutants such as Chemical Oxygen Demand (COD), chloride, sulphate, chromium, suspended solids, and other dissolved solids. The current study aimed to evaluate coagulation efficiency of tannery wastewater by analysing the change in organic matter, odor, colour, ammonium ions, nutrients, chloride, H2S, sulphate, suspended solids, total dissolved solids, faecal pollution, and chromium hexavalent before and after treatment. Effluent samples were treated with coagulants Ca(OH)2 and FeSO4 .7H2O. The best advantages of this treatment included the removal of: COD (81.60%); ammonia ions (98.34%); nitrate ions (92%); chromium hexavalent (75.00%); phosphate (70.00%); chloride (69.20%); and H₂S (50%). Results also indicated a high level of efficiency in the reduction of fecal pollution indicators. Unfortunately, only a modest reduction of sulphate (19.00%) and TSS (13.00%) and an increase in TDS (15.60%) was observed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=effluent" title=" effluent"> effluent</a>, <a href="https://publications.waset.org/abstracts/search?q=tannery" title=" tannery"> tannery</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment" title=" treatment"> treatment</a> </p> <a href="https://publications.waset.org/abstracts/3619/treatment-of-tannery-effluents-by-the-process-of-coagulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3619.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">343</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15290</span> Treatment of Rice Industry Waste Water by Flotation-Flocculation Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20K.%20Kapoor">J. K. Kapoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Shagufta%20Jabin"> Shagufta Jabin</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20S.%20Bhatia"> H. S. Bhatia </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polyamine flocculants were synthesized by poly-condensation of diphenylamine and epichlorohydrin using 1, 2-diaminoethane as modifying agent. The polyelectrolytes were prepared by taking epichlohydrin-diphenylamine in a molar ratio of 1:1, 1.5:1, 2:1, and 2.5:1. The flocculation performance of these polyelectrolytes was evaluated with rice industry waste water. The polyelectrolytes have been used in conjunction with alum for coagulation- flocculation process. Prior to the coagulation- flocculation process, air flotation technique was used with the aim to remove oil and grease content from waste water. Significant improvement was observed in the removal of oil and grease content after the air flotation technique. It has been able to remove 91.7% oil and grease from rice industry waste water. After coagulation-flocculation method, it has been observed that polyelectrolyte with epichlohydrin-diphenylamine molar ratio of 1.5:1 showed best results for the removal of pollutants from rice industry waste water. The highest efficiency of turbidity and TSS removal with polyelectrolyte has been found to be 97.5% and 98.2%, respectively. Results of these evaluations also reveal 86.8% removal of COD and 87.5% removal of BOD from rice industry waste water. Thus, we demonstrate optimization of coagulation–flocculation technique which is appropriate for waste water treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=flocculation" title=" flocculation"> flocculation</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20flotation%20technique" title=" air flotation technique"> air flotation technique</a>, <a href="https://publications.waset.org/abstracts/search?q=polyelectrolyte" title=" polyelectrolyte"> polyelectrolyte</a>, <a href="https://publications.waset.org/abstracts/search?q=turbidity" title=" turbidity "> turbidity </a> </p> <a href="https://publications.waset.org/abstracts/16797/treatment-of-rice-industry-waste-water-by-flotation-flocculation-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16797.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">480</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15289</span> Review on Optimization of Drinking Water Treatment Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Farhaoui">M. Farhaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Derraz"> M. Derraz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the drinking water treatment processes, the optimization of the treatment is an issue of particular concern. In general, the process consists of many units as settling, coagulation, flocculation, sedimentation, filtration and disinfection. The optimization of the process consists of some measures to decrease the managing and monitoring expenses and improve the quality of the produced water. The objective of this study is to provide water treatment operators with methods and practices that enable to attain the most effective use of the facility and, in consequence, optimize the of the cubic meter price of the treated water. This paper proposes a review on optimization of drinking water treatment process by analyzing all of the water treatment units and gives some solutions in order to maximize the water treatment performances without compromising the water quality standards. Some solutions and methods are performed in the water treatment plant located in the middle of Morocco (Meknes). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation%20process" title="coagulation process">coagulation process</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=turbidity%20removal" title=" turbidity removal"> turbidity removal</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment" title=" water treatment"> water treatment</a> </p> <a href="https://publications.waset.org/abstracts/44937/review-on-optimization-of-drinking-water-treatment-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44937.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">422</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15288</span> Treatment of Cutting Oily-Wastewater by Sono-Fenton Process: Experimental Approach and Combined Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pisut%20Painmanakul">Pisut Painmanakul</a>, <a href="https://publications.waset.org/abstracts/search?q=Thawatchai%20Chintateerachai"> Thawatchai Chintateerachai</a>, <a href="https://publications.waset.org/abstracts/search?q=Supanid%20Lertlapwasin"> Supanid Lertlapwasin</a>, <a href="https://publications.waset.org/abstracts/search?q=Nusara%20Rojvilavan"> Nusara Rojvilavan</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanun%20Chalermsinsuwan"> Tanun Chalermsinsuwan</a>, <a href="https://publications.waset.org/abstracts/search?q=Nattawin%20Chawaloesphonsiya"> Nattawin Chawaloesphonsiya</a>, <a href="https://publications.waset.org/abstracts/search?q=Onanong%20Larpparisudthi"> Onanong Larpparisudthi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conventional coagulation, advance oxidation process (AOPs), and the combined process were evaluated and compared for its suitability to treat the stabilized cutting-oil wastewater. The 90% efficiency was obtained from the coagulation at Al2(SO4)3 dosage of 150 mg/L and pH 7. On the other hands, efficiencies of AOPs for 30 minutes oxidation time were 10% for acoustic oxidation, 12% for acoustic oxidation with hydrogen peroxide, 76% for Fenton, and 92% sono-Fenton processes. The highest efficiency for effective oil removal of AOPs required large amount of chemical. Therefore, AOPs were studied as a post-treatment after conventional separation process. The efficiency was considerable as the effluent COD can pass the standard required for industrial wastewater discharge with less chemical and energy consumption. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cutting%20oily-wastewater" title="cutting oily-wastewater">cutting oily-wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=advance%20oxidation%20process" title=" advance oxidation process"> advance oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=sono-fenton" title=" sono-fenton"> sono-fenton</a>, <a href="https://publications.waset.org/abstracts/search?q=combined%20process" title=" combined process"> combined process</a> </p> <a href="https://publications.waset.org/abstracts/2103/treatment-of-cutting-oily-wastewater-by-sono-fenton-process-experimental-approach-and-combined-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2103.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15287</span> Preparation and Performance Evaluation of Green Chlorine-Free Coagulants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huihui%20Zhang">Huihui Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhongzhi%20Zhang"> Zhongzhi Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coagulation/flocculation is regarded a simple and effective wastewater treatment technology. Chlorine-containing coagulants may release chloride ions into the wastewater, causing corrosion. A green chlorine-free coagulant of polyaluminum ferric silicate (PSAF) was prepared by the copolymerization method to treat oily refractory wastewaters. Results showed that the highest removal efficiency of turbidity and chemical oxygen demand (COD) achieved 97.4% and 93.0% at a dosage of 700 mg/L, respectively. After PSAF coagulation, the chloride ion concentration was also almost the same as that in the raw wastewater. Thus, the chlorine-free coagulant is highly efficient and does not introduce additional chloride ions into the wastewater, avoiding corrosion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=chloride-free%20coagulant" title=" chloride-free coagulant"> chloride-free coagulant</a>, <a href="https://publications.waset.org/abstracts/search?q=oily%20refractory%20wastewater" title=" oily refractory wastewater"> oily refractory wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation%20performance" title=" coagulation performance"> coagulation performance</a> </p> <a href="https://publications.waset.org/abstracts/138079/preparation-and-performance-evaluation-of-green-chlorine-free-coagulants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138079.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">218</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15286</span> Performance Assessment of Recycled Alum Sludge in the Treatment of Textile Industry Effluent in South Africa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tony%20Ngoy%20Mbodi">Tony Ngoy Mbodi</a>, <a href="https://publications.waset.org/abstracts/search?q=Christophe%20Muanda"> Christophe Muanda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Textile industry is considered as one of the most polluting sectors in terms of effluent volume of discharge and wastewater composition, such as dye, which represents an environmental hazard when discharged without any proper treatment. A study was conducted to investigate the capability of the use of recycled alum sludge (RAS) as an alternative treatment for the reduction of colour, chemical oxygen demand (COD), total dissolved solids (TDS) and pH adjustment from dye based synthetic textile industry wastewater. The coagulation/flocculation process was studied for coagulants of Alum:RAS ratio of, 1:1, 2:1, 1:2 and 0:1. Experiments on treating the synthetic wastewater using membrane filtration and adsorption with corn cobs were also conducted. Results from the coagulation experiment were compared to those from adsorption with corn cobs and membrane filtration experiments conducted on the same synthetic wastewater. The results of the RAS experiments were also evaluated against standard guidelines for industrial effluents treated for discharge purposes in order to establish its level of compliance. Based on current results, it can be concluded that reusing the alum sludge as a low-cost material pretreatment method into the coagulation/flocculation process can offer some advantages such as high removal efficiency for disperse dye and economic savings on overall treatment of the industry wastewater. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alum" title="alum">alum</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation%2Fflocculation" title=" coagulation/flocculation"> coagulation/flocculation</a>, <a href="https://publications.waset.org/abstracts/search?q=dye" title=" dye"> dye</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20alum%20sludge" title=" recycled alum sludge"> recycled alum sludge</a>, <a href="https://publications.waset.org/abstracts/search?q=textile%20wastewater" title=" textile wastewater"> textile wastewater</a> </p> <a href="https://publications.waset.org/abstracts/69023/performance-assessment-of-recycled-alum-sludge-in-the-treatment-of-textile-industry-effluent-in-south-africa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69023.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">353</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15285</span> Encapsulated Rennin Enzyme in Nano and Micro Tubular Cellulose/Starch Gel Composite for Milk Coagulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eleftheria%20Barouni">Eleftheria Barouni</a>, <a href="https://publications.waset.org/abstracts/search?q=Theano%20Petsi"> Theano Petsi</a>, <a href="https://publications.waset.org/abstracts/search?q=Argyro%20Bekatorou"> Argyro Bekatorou</a>, <a href="https://publications.waset.org/abstracts/search?q=Dionysos%20Kolliopoulos"> Dionysos Kolliopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Vasileiou"> Dimitrios Vasileiou</a>, <a href="https://publications.waset.org/abstracts/search?q=Panayiotis%20Panas"> Panayiotis Panas</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Kanellaki"> Maria Kanellaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Athanasios%20A.%20Koutinas"> Athanasios A. Koutinas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present work was the production and use of a composite filter (TC/starch), containing rennin enzyme, in continuous system and in successive fermentation batches (SFB) for milk coagulation in order to compare the operational stability of both systems and cheese production cost. Tubular cellulose (TC) was produced after removal of lignin from lignocellulosic biomass using several procedures, e.g. alkaline treatment [1] and starch gel was added for the reduction of TC tubes dimensions to micro- and nano- range[2]. Four immobilized biocatalysts were prepared using different ways of the enzyme entrapment. 1) TC/ rennin (rennin entrapped in the tubes of TC), 2) TC/SG-rennin (rennin entrapped in the tubes of the composite), 3) TC-SG/rennin (rennin entrapped into the layer of starch gel) and 4) TC/rennin- SG/rennin (rennin is entrapped both in the tubes of the TC and into the layer of starch gel). Firstly these immobilized biocatalysts were examined in ten SFB regarding the coagulation time and their activity All the above immobilized biocatalysts remained active and the coagulation time was ranged from 90 to 480, 120-480, 330-510, and 270-540 min for (1), (2), (3), and (4) respectively. The quality of the cheese was examined through the determination of volatile compounds by SPME GC/MS analysis. These results encouraged us to study a continuous coagulation system of milk. Even though the (1) immobilized biocatalyst gave lower coagulation time, we used the (2) immobilized biocatalyst in the continuous system. The results were promising. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tubular%20cellulose" title="tubular cellulose">tubular cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=starch%20gel" title="starch gel">starch gel</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20biocatalyst" title=" composite biocatalyst"> composite biocatalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=Rennin" title=" Rennin"> Rennin</a>, <a href="https://publications.waset.org/abstracts/search?q=milk%20coagulation" title=" milk coagulation"> milk coagulation</a> </p> <a href="https://publications.waset.org/abstracts/20843/encapsulated-rennin-enzyme-in-nano-and-micro-tubular-cellulosestarch-gel-composite-for-milk-coagulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20843.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">326</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15284</span> Coagulation-Flocculation of Palm Oil Mill Effluent from Pertubuhan Peladang Negeri Johor, Malaysia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20H.%20Jagaba">A. H. Jagaba</a>, <a href="https://publications.waset.org/abstracts/search?q=Musa%20Babayo"> Musa Babayo</a>, <a href="https://publications.waset.org/abstracts/search?q=Ab%20Aziz%20Abdul%20Latiff"> Ab Aziz Abdul Latiff</a>, <a href="https://publications.waset.org/abstracts/search?q=Sule%20Abubakar"> Sule Abubakar</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20M.%20Lawal"> I. M. Lawal</a>, <a href="https://publications.waset.org/abstracts/search?q=Isa%20Zubairu"> Isa Zubairu</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Nasara"> M. A. Nasara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wastewater containing heavy metals is of extreme importance globally because of its potential threat to both the aquatic ecosystem and the soil environment. Heavy metal is hazardous even at low concentration and thereby causing various forms of diseases. One method which has been tested and found to be effective for heavy metals removal is coagulation-flocculation. For the coagulation process of POME obtained from Pertubuhan Peladang Negeri Johor (PPNJ), Oil Palm Mill Company located in Kahang area of Kluang, Johor Darul Takzim, Malaysia, diffèrent coagulants would be used to absorb and then separate the metals from wastewater. The determination of heavy metals concentration in POME was carried out using an inductively coupled plasma (ICP) and an Atomic Absorption Spectrometer (AAS). Results of the study showed that alum coagulant was successful in effectively reducing Cu, Cd, and Mn from 0.840 mg/l, 0.00509 mg/l and 8.191 mg/l to as low as 0.107 mg/l, 0.000270 mg/l and 0.612 mg/l respectively. All were obtained at a dose of 1000 mg/l. 1000 mg/l dose of ferric chloride reduced Pb concentration from 0.0248 mg/l to 0.00151 mg/l. Chitosan was best at reducing Fe and Zn from 62.91 mg/l and 3.616 mg/l to 6.003 mg/l and 0.595 mg/l all at a dose of 400 mg/l. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=palm%20oil%20mill%20effluent" title="palm oil mill effluent">palm oil mill effluent</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation" title=" coagulation"> coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=heavy%20metals" title=" heavy metals"> heavy metals</a>, <a href="https://publications.waset.org/abstracts/search?q=Pertubuhan%20Peladang%20Negeri%20Johor" title=" Pertubuhan Peladang Negeri Johor"> Pertubuhan Peladang Negeri Johor</a>, <a href="https://publications.waset.org/abstracts/search?q=Malaysia" title=" Malaysia"> Malaysia</a> </p> <a href="https://publications.waset.org/abstracts/110233/coagulation-flocculation-of-palm-oil-mill-effluent-from-pertubuhan-peladang-negeri-johor-malaysia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110233.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">226</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15283</span> The Magnitude and Associated Factors of Coagulation Abnormalities Among Liver Disease Patients at the University of Gondar Comprehensive Specialized Hospital Northwest, Ethiopia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Melkamu%20A.">Melkamu A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Woldu%20B."> Woldu B.</a>, <a href="https://publications.waset.org/abstracts/search?q=Sitotaw%20C."> Sitotaw C.</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyoum%20M."> Seyoum M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Aynalem%20M."> Aynalem M.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Liver disease is any condition that affects the liver cells and their function. It is directly linked to coagulation disorders since most coagulation factors are produced by the liver. Therefore, this study aimed to assess the magnitude and associated factors of coagulation abnormalities among liver disease patients. Methods: A cross-sectional study was conducted from August to October 2022 among 307 consecutively selected study participants at the University of Gondar Comprehensive Specialized Hospital. Sociodemographic and clinical data were collected using a structured questionnaire and data extraction sheet, respectively. About 2.7 mL of venous blood was collected and analyzed by the Genrui CA51 coagulation analyzer. Data was entered into Epi-data and exported to STATA version 14 software for analysis. The finding was described in terms of frequencies and proportions. Factors associated with coagulation abnormalities were analyzed by bivariable and multivariable logistic regression. Result: In this study, a total of 307 study participants were included. Of them, the magnitude of prolonged Prothrombin Time (PT) and Activated Partial Thromboplastin Time (APTT) were 68.08% and 63.51%, respectively. The presence of anemia (AOR = 2.97, 95% CI: 1.26, 7.03), a lack of a vegetable feeding habit (AOR = 2.98, 95% CI: 1.42, 6.24), no history of blood transfusion (AOR = 3.72, 95% CI: 1.78, 7.78), and lack of physical exercise (AOR = 3.23, 95% CI: 1.60, 6.52) were significantly associated with prolonged PT. While the presence of anaemia (AOR = 3.02; 95% CI: 1.34, 6.76), lack of vegetable feeding habit (AOR = 2.64; 95% CI: 1.34, 5.20), no history of blood transfusion (AOR = 2.28; 95% CI: 1.09, 4.79), and a lack of physical exercise (AOR = 2.35; 95% CI: 1.16, 4.78) were significantly associated with abnormal APTT. Conclusion: Patients with liver disease had substantial coagulation problems. Being anemic, having a transfusion history, lack of physical activity, and lack of vegetables showed significant association with coagulopathy. Therefore, early detection and management of coagulation abnormalities in liver disease patients are critical. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=liver%20disease" title=" liver disease"> liver disease</a>, <a href="https://publications.waset.org/abstracts/search?q=PT" title=" PT"> PT</a>, <a href="https://publications.waset.org/abstracts/search?q=Aptt" title=" Aptt"> Aptt</a> </p> <a href="https://publications.waset.org/abstracts/180815/the-magnitude-and-associated-factors-of-coagulation-abnormalities-among-liver-disease-patients-at-the-university-of-gondar-comprehensive-specialized-hospital-northwest-ethiopia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/180815.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">60</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15282</span> Performance Evaluation and Kinetics of Artocarpus heterophyllus Seed for the Purification of Paint Industrial Wastewater by Coagulation-Flocculation Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ifeoma%20Maryjane%20Iloamaeke">Ifeoma Maryjane Iloamaeke</a>, <a href="https://publications.waset.org/abstracts/search?q=Kelvin%20Obazie"> Kelvin Obazie</a>, <a href="https://publications.waset.org/abstracts/search?q=Mmesoma%20Offornze"> Mmesoma Offornze</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiamaka%20Marysilvia%20Ifeaghalu"> Chiamaka Marysilvia Ifeaghalu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cecilia%20Aduaka"> Cecilia Aduaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Ugomma%20Chibuzo%20Onyeije"> Ugomma Chibuzo Onyeije</a>, <a href="https://publications.waset.org/abstracts/search?q=Claudine%20Ifunanaya%20Ogu"> Claudine Ifunanaya Ogu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ngozi%20Anastesia%20Okonkwo"> Ngozi Anastesia Okonkwo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work investigated the effects of pH, settling time, and coagulant dosages on the removal of color, turbidity, and heavy metals from paint industrial wastewater using the seed of Artocarpus heterophyllus (AH) by the coagulation-flocculation process. The paint effluent was physicochemically characterized, while AH coagulant was instrumentally characterized by Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR), and X-ray diffraction (XRD). A Jar test experiment was used for the coagulation-flocculation process. The result showed that paint effluent was polluted with color, turbidity (36000 NTU), mercury (1.392 mg/L), lead (0.252 mg/L), arsenic (1.236 mg/L), TSS (63.40mg/L), and COD (121.70 mg/L). The maximum color removal efficiency was 94.33% at the dosage of 0.2 g/L, pH 2 at a constant time of 50 mins, and 74.67% at constant pH 2, coagulant dosage of 0.2 g/L and 50 mins. The highest turbidity removal efficiency was 99.94% at 0.2 g/L and 50 mins at constant pH 2 and 96.66% at pH 2 and 0.2 g/L at constant time of 50 mins. The mercury removal efficiency of 99.29% was achieved at the optimal condition of 0.8 g/L coagulant dosage, pH 8, and constant time of 50 mins and 99.57% at coagulant dosage of 0.8 g/L, time of 50 mins constant pH 8. The highest lead removal efficiency was 99.76% at a coagulant dosage of 10 g/L, time of 40 mins at constant pH 10, and 96.53% at pH 10, coagulant dosage of 10 g/L and constant time of 40 mins. For arsenic, the removal efficiency is 75.24 % at 0.8 g/L coagulant dosage, time of 40 mins, and constant pH of 8. XRD imaging before treatment showed that Artocarpus heterophyllus coagulant was crystalline and changed to amorphous after treatment. The SEM and FTIR results of the AH coagulant and sludge suggested there were changes in the surface morphology and functional groups before and after treatment. The reaction kinetics were modeled best in the second order. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Artocarpus%20heterophyllus" title="Artocarpus heterophyllus">Artocarpus heterophyllus</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation-flocculation" title=" coagulation-flocculation"> coagulation-flocculation</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulant%20dosages" title=" coagulant dosages"> coagulant dosages</a>, <a href="https://publications.waset.org/abstracts/search?q=setting%20time" title=" setting time"> setting time</a>, <a href="https://publications.waset.org/abstracts/search?q=paint%20effluent" title=" paint effluent"> paint effluent</a> </p> <a href="https://publications.waset.org/abstracts/156420/performance-evaluation-and-kinetics-of-artocarpus-heterophyllus-seed-for-the-purification-of-paint-industrial-wastewater-by-coagulation-flocculation-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156420.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15281</span> Valorisation of a Bioflocculant and Hydroxyapatites as Coagulation-Flocculation Adjuvants in Wastewater Treatment of the Steppe in the Wilaya of Saida</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatima%20Zohra%20Choumane">Fatima Zohra Choumane</a>, <a href="https://publications.waset.org/abstracts/search?q=Belkacem%20Benguella"> Belkacem Benguella</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouhana%20Maachou"> Bouhana Maachou</a>, <a href="https://publications.waset.org/abstracts/search?q=Nacera%20Saadi"> Nacera Saadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pollution caused by wastewater is a serious problem in Algeria. This pollution has certainly harmful effects on the environment. In order to reduce the bad effects of these pollutants, many wastewater treatment processes, mainly physicochemical, are implemented. This study consists in using two flocculants; the first one is a biodegradable natural bioflocculant, i.e. Cactaceaeou ficus-indica cactus juice, and the second is the synthetic hydroxyapatite, in a physico-chemical process through coagulation-flocculation, using two coagulants, i.e. ferric chloride and aluminum sulfate, to treat wastewater collected at the entrance of the treatment plant, in the town of Saida. The influence of various experimental parameters, such as the amounts of coagulants and flocculants used, pH, turbidity, COD and BOD5, was investigated. The coagulation - flocculation jar tests of wastewater reveal that ferric chloride, containing a mass of 0.3 g – hydroxyapatite, treated for 1 hour through calcination, is the most effective adjuvant in clarifying the wastewater, with turbidity equal to 98.16 %. In the presence of the two bioflocculants, Cactaceae juice and aluminum sulphate, with a dose of 0.2 g, flocculation is good, with turbidity equal to 95.61 %. Examination of the key reaction parameters, following the flocculation tests of wastewater, shows that the degree of pollution decreases. This is confirmed by the COD and turbidity values obtained. Examination of these results suggests the use of these flocculants in wastewater treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wastewater" title="wastewater">wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=cactus%20ficus-indica" title=" cactus ficus-indica"> cactus ficus-indica</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyapatite" title=" hydroxyapatite"> hydroxyapatite</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation%20-%20flocculation" title=" coagulation - flocculation"> coagulation - flocculation</a> </p> <a href="https://publications.waset.org/abstracts/43194/valorisation-of-a-bioflocculant-and-hydroxyapatites-as-coagulation-flocculation-adjuvants-in-wastewater-treatment-of-the-steppe-in-the-wilaya-of-saida" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43194.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">341</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15280</span> Fast and Accurate Finite-Difference Method Solving Multicomponent Smoluchowski Coagulation Equation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alexander%20P.%20Smirnov">Alexander P. Smirnov</a>, <a href="https://publications.waset.org/abstracts/search?q=Sergey%20A.%20Matveev"> Sergey A. Matveev</a>, <a href="https://publications.waset.org/abstracts/search?q=Dmitry%20A.%20Zheltkov"> Dmitry A. Zheltkov</a>, <a href="https://publications.waset.org/abstracts/search?q=Eugene%20E.%20Tyrtyshnikov"> Eugene E. Tyrtyshnikov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We propose a new computational technique for multidimensional (multicomponent) Smoluchowski coagulation equation. Using low-rank approximations in Tensor Train format of both the solution and the coagulation kernel, we accelerate the classical finite-difference Runge-Kutta scheme keeping its level of accuracy. The complexity of the taken finite-difference scheme is reduced from O(N^2d) to O(d^2 N log N ), where N is the number of grid nodes and d is a dimensionality of the problem. The efficiency and the accuracy of the new method are demonstrated on concrete problem with known analytical solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tensor%20train%20decomposition" title="tensor train decomposition">tensor train decomposition</a>, <a href="https://publications.waset.org/abstracts/search?q=multicomponent%20Smoluchowski%20equation" title=" multicomponent Smoluchowski equation"> multicomponent Smoluchowski equation</a>, <a href="https://publications.waset.org/abstracts/search?q=runge-kutta%20scheme" title=" runge-kutta scheme"> runge-kutta scheme</a>, <a href="https://publications.waset.org/abstracts/search?q=convolution" title=" convolution"> convolution</a> </p> <a href="https://publications.waset.org/abstracts/40417/fast-and-accurate-finite-difference-method-solving-multicomponent-smoluchowski-coagulation-equation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40417.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">432</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15279</span> Establishing Reference Intervals for Routine Coagulation Tests</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Santina%20Sahibon">Santina Sahibon</a>, <a href="https://publications.waset.org/abstracts/search?q=Sivasooriar%20Sivaneson"> Sivasooriar Sivaneson</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Giddy"> Martin Giddy</a>, <a href="https://publications.waset.org/abstracts/search?q=Nelson%20Nheu"> Nelson Nheu</a>, <a href="https://publications.waset.org/abstracts/search?q=Siti%20Sazeelah"> Siti Sazeelah</a>, <a href="https://publications.waset.org/abstracts/search?q=Choo%20Kok%20Ming"> Choo Kok Ming</a>, <a href="https://publications.waset.org/abstracts/search?q=Thuhairah%20Abdul%20Rahman"> Thuhairah Abdul Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatmawati%20Binti%20Kamal"> Fatmawati Binti Kamal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Establishing population-based reference intervals (RI) are essential when evaluating laboratory test results and for method verification. Our laboratory initiated an exercise to establish RI for routine coagulation profile as part of the method verification procedure and to determine any differences in RI between three analyzers planned to be used in the laboratory. Methodology: 145 blood samples were collected and analysed for activated partial thromboplastin time (aPTT), prothrombin time (PT), international normalized ratio (INR), and fibrinogen] using three coagulation analysers which were CA104, CA660, and CS-2500 (Sysmex, USA). RI was established at 2.5th and 97.5th percentiles. Results: The RI for aPTT between C104, C660 and CS-2500 are (RI: 20.5-30.2 sec), (RI: 21.5-29.2 sec) and (RI: 22.7-30.3 sec) respectively. The RI for PT were (RI: 7.5-10.3 sec), (RI: 9.2- 11.1 sec) and (RI: 9.8-11.9 sec) for C104, CA660 and CS-2500 respectively. INR had an RI of (RI: 0.87- 1.16), (RI: 0.89-1.10) and (0.90-1.11) respectively on CA104, C660 and CS-2500. Fibrinogen RI was (RI: 2.04-4.62 g/L) and (2.05-4.76 g/L) on the CA660 and CS-2500, respectively. Conclusion: The RI was similar across the analytical platforms for aPTT, INR, and fibrinogen. However, CA104 showed lower RI compared to the other two analysers for PT. This highlights the potential variability in results between instruments that need to be addressed when verifying RI. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=reference%20interval" title=" reference interval"> reference interval</a>, <a href="https://publications.waset.org/abstracts/search?q=APTT" title=" APTT"> APTT</a>, <a href="https://publications.waset.org/abstracts/search?q=PT" title=" PT"> PT</a>, <a href="https://publications.waset.org/abstracts/search?q=INR" title=" INR"> INR</a>, <a href="https://publications.waset.org/abstracts/search?q=fibrinogen" title=" fibrinogen"> fibrinogen</a> </p> <a href="https://publications.waset.org/abstracts/149682/establishing-reference-intervals-for-routine-coagulation-tests" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149682.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">187</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15278</span> An Approach for Coagulant Dosage Optimization Using Soft Jar Test: A Case Study of Bangkhen Water Treatment Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ninlawat%20Phuangchoke">Ninlawat Phuangchoke</a>, <a href="https://publications.waset.org/abstracts/search?q=Waraporn%20Viyanon"> Waraporn Viyanon</a>, <a href="https://publications.waset.org/abstracts/search?q=Setta%20Sasananan"> Setta Sasananan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The most important process of the water treatment plant process is the coagulation using alum and poly aluminum chloride (PACL), and the value of usage per day is a hundred thousand baht. Therefore, determining the dosage of alum and PACL are the most important factors to be prescribed. Water production is economical and valuable. This research applies an artificial neural network (ANN), which uses the Levenberg–Marquardt algorithm to create a mathematical model (Soft Jar Test) for prediction chemical dose used to coagulation such as alum and PACL, which input data consists of turbidity, pH, alkalinity, conductivity, and, oxygen consumption (OC) of Bangkhen water treatment plant (BKWTP) Metropolitan Waterworks Authority. The data collected from 1 January 2019 to 31 December 2019 cover changing seasons of Thailand. The input data of ANN is divided into three groups training set, test set, and validation set, which the best model performance with a coefficient of determination and mean absolute error of alum are 0.73, 3.18, and PACL is 0.59, 3.21 respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soft%20jar%20test" title="soft jar test">soft jar test</a>, <a href="https://publications.waset.org/abstracts/search?q=jar%20test" title=" jar test"> jar test</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20treatment%20plant%20process" title=" water treatment plant process"> water treatment plant process</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20network" title=" artificial neural network"> artificial neural network</a> </p> <a href="https://publications.waset.org/abstracts/134969/an-approach-for-coagulant-dosage-optimization-using-soft-jar-test-a-case-study-of-bangkhen-water-treatment-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134969.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">165</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15277</span> A Comparative Study of Simple and Pre-polymerized Fe Coagulants for Surface Water Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Petros%20Gkotsis">Petros Gkotsis</a>, <a href="https://publications.waset.org/abstracts/search?q=Giorgos%20Stratidis"> Giorgos Stratidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Manassis%20Mitrakas"> Manassis Mitrakas</a>, <a href="https://publications.waset.org/abstracts/search?q=Anastasios%20Zouboulis"> Anastasios Zouboulis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the use of original and pre-polymerized iron (Fe) reagents compared to the commonly applied polyaluminum chloride (PACl) coagulant for surface water treatment. Applicable coagulants included both ferric chloride (FeCl₃) and ferric sulfate (Fe₂(SO₄)₃) and their pre-polymerized Fe reagents, such as polyferric sulfate (PFS) and polyferric chloride (PFCl). The efficiency of coagulants was evaluated by the removal of natural organic matter (NOM) and suspended solids (SS), which were determined in terms of reducing the UV absorption at 254 nm and turbidity, respectively. The residual metal concentration (Fe and Al) was also measured. Coagulants were added at five concentrations (1, 2, 3, 4 and 5 mg/L) and three pH values (7.0, 7.3 and 7.6). Experiments were conducted in a jar-test device, with two types of synthetic surface water (i.e., of high and low organic strength) which consisted of humic acid (HA) and kaolin at different concentrations (5 mg/L and 50 mg/L). After the coagulation/flocculation process, clean water was separated with filters of pore size 0.45 μm. Filtration was also conducted before the addition of coagulants in order to compare the ‘net’ effect of the coagulation/flocculation process on the examined parameters (UV at 254 nm, turbidity, and residual metal concentration). Results showed that the use of PACl resulted in the highest removal of humics for both types of surface water. For the surface water of high organic strength (humic acid-kaolin, 50 mg/L-50 mg/L), the highest removal of humics was observed at the highest coagulant dosage of 5 mg/L and at pH=7. On the contrary, turbidity was not significantly affected by the coagulant dosage. However, the use of PACl decreased turbidity the most, especially when the surface water of high organic strength was employed. As expected, the application of coagulation/flocculation prior to filtration improved NOM removal but slightly affected turbidity. Finally, the residual Fe concentration (0.01-0.1 mg/L) was much lower than the residual Al concentration (0.1-0.25 mg/L). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation%2Fflocculation" title="coagulation/flocculation">coagulation/flocculation</a>, <a href="https://publications.waset.org/abstracts/search?q=iron%20and%20aluminum%20coagulants" title=" iron and aluminum coagulants"> iron and aluminum coagulants</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20salts" title=" metal salts"> metal salts</a>, <a href="https://publications.waset.org/abstracts/search?q=pre-polymerized%20coagulants" title=" pre-polymerized coagulants"> pre-polymerized coagulants</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20water%20treatment" title=" surface water treatment"> surface water treatment</a> </p> <a href="https://publications.waset.org/abstracts/144828/a-comparative-study-of-simple-and-pre-polymerized-fe-coagulants-for-surface-water-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144828.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">154</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15276</span> Effects of the Coagulation Bath and Reduction Process on SO2 Adsorption Capacity of Graphene Oxide Fiber</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=%C3%96zge%20Alpto%C4%9Fa">Özge Alptoğa</a>, <a href="https://publications.waset.org/abstracts/search?q=Nuray%20U%C3%A7ar"> Nuray Uçar</a>, <a href="https://publications.waset.org/abstracts/search?q=Nilg%C3%BCn%20Karatepe%20Yavuz"> Nilgün Karatepe Yavuz</a>, <a href="https://publications.waset.org/abstracts/search?q=Ay%C5%9Fen%20%C3%96nen"> Ayşen Önen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sulfur dioxide (SO<sub>2</sub>) is a very toxic air pollutant gas and it causes the greenhouse effect, photochemical smog, and acid rain, which threaten human health severely. Thus, the capture of SO<sub>2</sub> gas is very important for the environment. Graphene which is two-dimensional material has excellent mechanical, chemical, thermal properties, and many application areas such as energy storage devices, gas adsorption, sensing devices, and optical electronics. Further, graphene oxide (GO) is examined as a good adsorbent because of its important features such as functional groups (epoxy, carboxyl and hydroxyl) on the surface and layered structure. The SO<sub>2</sub> adsorption properties of the fibers are usually investigated on carbon fibers. In this study, potential adsorption capacity of GO fibers was researched. GO dispersion was first obtained with Hummers’ method from graphite, and then GO fibers were obtained via wet spinning process. These fibers were converted into a disc shape, dried, and then subjected to SO<sub>2</sub> gas adsorption test. The SO<sub>2</sub> gas adsorption capacity of GO fiber discs was investigated in the fields of utilization of different coagulation baths and reduction by hydrazine hydrate. As coagulation baths, single and triple baths were used. In single bath, only ethanol and CaCl<sub>2</sub> (calcium chloride) salt were added. In triple bath, each bath has a different concentration of water/ethanol and CaCl<sub>2</sub> salt, and the disc obtained from triple bath has been called as reference disk. The fibers which were produced with single bath were flexible and rough, and the analyses show that they had higher SO<sub>2</sub> adsorption capacity than triple bath fibers (reference disk). However, the reduction process did not increase the adsorption capacity, because the SEM images showed that the layers and uniform structure in the fiber form were damaged, and reduction decreased the functional groups which SO<sub>2</sub> will be attached. Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD) analyzes were performed on the fibers and discs, and the effects on the results were interpreted. In the future applications of the study, it is aimed that subjects such as pH and additives will be examined. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation%20bath" title="coagulation bath">coagulation bath</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20oxide%20fiber" title=" graphene oxide fiber"> graphene oxide fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction" title=" reduction"> reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=SO2%20gas%20adsorption" title=" SO2 gas adsorption"> SO2 gas adsorption</a> </p> <a href="https://publications.waset.org/abstracts/68831/effects-of-the-coagulation-bath-and-reduction-process-on-so2-adsorption-capacity-of-graphene-oxide-fiber" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68831.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">360</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15275</span> On the Mathematical Modelling of Aggregative Stability of Disperse Systems </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arnold%20M.%20Brener">Arnold M. Brener</a>, <a href="https://publications.waset.org/abstracts/search?q=Lesbek%20Tashimov"> Lesbek Tashimov</a>, <a href="https://publications.waset.org/abstracts/search?q=Ablakim%20S.%20Muratov"> Ablakim S. Muratov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper deals with the special model for coagulation kernels which represents new control parameters in the Smoluchowski equation for binary aggregation. On the base of the model the new approach to evaluating aggregative stability of disperse systems has been submitted. With the help of this approach the simple estimates for aggregative stability of various types of hydrophilic nano-suspensions have been obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregative%20stability" title="aggregative stability">aggregative stability</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation%20kernels" title=" coagulation kernels"> coagulation kernels</a>, <a href="https://publications.waset.org/abstracts/search?q=disperse%20systems" title=" disperse systems"> disperse systems</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model"> mathematical model</a> </p> <a href="https://publications.waset.org/abstracts/10336/on-the-mathematical-modelling-of-aggregative-stability-of-disperse-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10336.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15274</span> Evaluation of Coagulation State in Patients with End Stage Renal Disease (ESRD) by Thromboelastogram (TEG)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Javad%20Esmaeili">Mohammad Javad Esmaeili</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Coagulopathy is one of the complications with end stage renal disease with high prevalence in the world. Thromboelastogram is adynamic test for evaluation of coagulopathy and we have compared our patient's coagulation profiles with the results of TEG. Material and methods: In this study 50 patients with ESRD who were on regular hemodialysis for at least 6 months was selected with simple sampling and their coagulation profile was done with blood sampling and also TEG was done for every patient. Data were analyzed with SPSS and P<0.05 consider significant. Results: Protein s, Protein c and Antithrombin III deficiency was detected in 32%, 16% and 20% of patients and activated protein c resistance was abnormal in 2% of patients. In TEG, R time in 49% and K in 22/5% of patients was lower than normal and a-angle in 26% and maximum amplitude in 36% of patients was upper than normal (Hypercoagulable state). PS with R and ATIII with K have correlation. Conclusion: R time and K in TEG can be a suitable screening test in patients with suspicious to PS and ATIII deficiency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thromboelastography" title="thromboelastography">thromboelastography</a>, <a href="https://publications.waset.org/abstracts/search?q=chronic%20kidney%20disease" title=" chronic kidney disease"> chronic kidney disease</a>, <a href="https://publications.waset.org/abstracts/search?q=Coagulating%20disorder" title=" Coagulating disorder"> Coagulating disorder</a>, <a href="https://publications.waset.org/abstracts/search?q=hemodialysis" title=" hemodialysis"> hemodialysis</a> </p> <a href="https://publications.waset.org/abstracts/162888/evaluation-of-coagulation-state-in-patients-with-end-stage-renal-disease-esrd-by-thromboelastogram-teg" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162888.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">76</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15273</span> Sudden Death and Chronic Disseminated Intravascular Coagulation (DIC): Two Case Reports</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saker%20Lilia">Saker Lilia</a>, <a href="https://publications.waset.org/abstracts/search?q=Youcef%20Mellouki"> Youcef Mellouki</a>, <a href="https://publications.waset.org/abstracts/search?q=Lakhdar%20Sellami"> Lakhdar Sellami</a>, <a href="https://publications.waset.org/abstracts/search?q=Yacine%20Zerairia"> Yacine Zerairia</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhaid%20Zetili"> Abdelhaid Zetili</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Guahria"> Fatma Guahria</a>, <a href="https://publications.waset.org/abstracts/search?q=Fateh%20Kaious"> Fateh Kaious</a>, <a href="https://publications.waset.org/abstracts/search?q=Nesrine%20Belkhodja"> Nesrine Belkhodja</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhamid%20Mira"> Abdelhamid Mira</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Sudden death is regarded as a suspicious demise necessitating autopsy, as stipulated by legal authorities. Chronic disseminated intravascular coagulation (DIC) is an acquired clinical and biological syndrome characterized by a severe and fatal prognosis, stemming from systemic, uncontrolled, diffuse coagulation activation. Irrespective of their origins, DIC is associated with a diverse spectrum of manifestations, encompassing minor biological coagulation alterations to profoundly severe conditions wherein hemorrhagic complications may take precedence. Simultaneously, microthrombi contribute to the development of multi-organ failures. Objective This study seeks to evaluate the role of autopsy in determining the causes of death. Materials and Methods: We present two instances of sudden death involving females who underwent autopsy at the Forensic Medicine Department of the University Hospital of Annaba, Algeria. These autopsies were performed at the request of the prosecutor, aiming to determine the causes of death and illuminate the exact circumstances surrounding it. Methods Utilized: Analysis of the initial information report; Findings from postmortem examinations; Histological assessments and toxicological analyses. Results: The presence of DIC was noted, affecting nearly all veins with distinct etiologies. Conclusion: For the establishment of a meaningful diagnosis: • Thorough understanding of the subject matter is imperative; • Precise alignment with medicolegal data is essential. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chronic%20disseminated%20intravascular%20coagulation" title="chronic disseminated intravascular coagulation">chronic disseminated intravascular coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=sudden%20death" title=" sudden death"> sudden death</a>, <a href="https://publications.waset.org/abstracts/search?q=autopsy" title=" autopsy"> autopsy</a>, <a href="https://publications.waset.org/abstracts/search?q=causes%20of%20death" title=" causes of death"> causes of death</a> </p> <a href="https://publications.waset.org/abstracts/171956/sudden-death-and-chronic-disseminated-intravascular-coagulation-dic-two-case-reports" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171956.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">85</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15272</span> Possibility of Prediction of Death in SARS-Cov-2 Patients Using Coagulogram Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omonov%20Jahongir%20Mahmatkulovic">Omonov Jahongir Mahmatkulovic</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Purpose: To study the significance of D-dimer (DD), prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time (TT), and fibrinogen coagulation parameters (Fg) in predicting the course, severity and prognosis of COVID-19. Source and method of research: From September 15, 2021, to November 5, 2021, 93 patients aged 25 to 60 with suspected COVID-19, who are under inpatient treatment at the multidisciplinary clinic of the Tashkent Medical Academy, were retrospectively examined. DD, PT, APTT, and Fg were studied in dynamics and studied changes. Results: Coagulation disorders occurred in the early stages of COVID-19 infection with an increase in DD in 54 (58%) patients and an increase in Fg in 93 (100%) patients. DD and Fg levels are associated with the clinical classification. Of the 33 patients who died, 21 had an increase in DD in the first laboratory study, 27 had an increase in DD in the second and third laboratory studies, and 15 had an increase in PT in the third test. The results of the ROC analysis of mortality showed that the AUC DD was three times 0.721, 0.801, and 0.844, respectively; PT was 0.703, 0.845, and 0.972. (P<0:01). Conclusion”: Coagulation dysfunction is more common in patients with severe and critical conditions. DD and PT can be used as important predictors of mortality from COVID-19. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Covid19" title="Covid19">Covid19</a>, <a href="https://publications.waset.org/abstracts/search?q=DD" title=" DD"> DD</a>, <a href="https://publications.waset.org/abstracts/search?q=PT" title=" PT"> PT</a>, <a href="https://publications.waset.org/abstracts/search?q=Coagulogram%20analysis" title=" Coagulogram analysis"> Coagulogram analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=APTT" title=" APTT"> APTT</a> </p> <a href="https://publications.waset.org/abstracts/149695/possibility-of-prediction-of-death-in-sars-cov-2-patients-using-coagulogram-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149695.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">107</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15271</span> Cheese Production at Low Temperatures Using Probiotic L. casei ATCC 393 and Rennin Enzyme Entrapped in Tubular Cellulose</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eleftheria%20Barouni">Eleftheria Barouni</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonia%20Terpou"> Antonia Terpou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Kanellaki"> Maria Kanellaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Argyro%20Bekatorou"> Argyro Bekatorou</a>, <a href="https://publications.waset.org/abstracts/search?q=Athanasios%20A.Koutinas"> Athanasios A.Koutinas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present work was to evaluate the production of cheese using a composite filter of tubular cellulose (TC) with [a] entrapped rennin enzyme and [b] immobilized L.casei and entrapped enzyme. Tubular cellulose from sawdust was prepared after lignin removal with 1% NaOH. The biocatalysts were thermally dried at 38oC and used for milk coagulation. The effect of temperature (5,20,37 oC) of the first dried biocatalyst on the pH kinetics of milk coagulation was examined. The optimum temperature (37oC) of the first biocatalyst was used for milk coagulation with the second biocatalyst prepared by entrapment of both rennin enzyme and probiotic lactic acid bacteria in order to introduce a sour taste in cheeses. This co-biocatalyst was used for milk coagulation. Samples were studied as regards its effect on lactic acid formation and its correlation with taste test results in cheeses. For both biocatalysts samples were analyzed for total acidity and lactic acid formation by HPLC. The quality of the produced cheeses was examined through the determination of volatile compounds by SPME GC/MS analysis. Preliminary taste tests and microbiological analysis were performed and encourage us for further research regarding scale up. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tubular%20cellulose" title="tubular cellulose">tubular cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=Lactobacillus%20casei" title=" Lactobacillus casei"> Lactobacillus casei</a>, <a href="https://publications.waset.org/abstracts/search?q=rennin%20enzyme" title=" rennin enzyme"> rennin enzyme</a>, <a href="https://publications.waset.org/abstracts/search?q=cheese%20production" title=" cheese production "> cheese production </a> </p> <a href="https://publications.waset.org/abstracts/20867/cheese-production-at-low-temperatures-using-probiotic-l-casei-atcc-393-and-rennin-enzyme-entrapped-in-tubular-cellulose" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20867.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">358</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15270</span> The Clarification of Palm Oil Wastewater Treatment by Coagulant Composite from Palm Oil Ash</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rewadee%20Anuwattana">Rewadee Anuwattana</a>, <a href="https://publications.waset.org/abstracts/search?q=Narumol%20Soparatana"> Narumol Soparatana</a>, <a href="https://publications.waset.org/abstracts/search?q=Pattamaphorn%20Phuangngamphan"> Pattamaphorn Phuangngamphan</a>, <a href="https://publications.waset.org/abstracts/search?q=Worapong%20Pattayawan"> Worapong Pattayawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Atiporn%20Jinprayoon"> Atiporn Jinprayoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Saroj%20Klangkongsap"> Saroj Klangkongsap</a>, <a href="https://publications.waset.org/abstracts/search?q=Supinya%20Sutthima"> Supinya Sutthima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work focus on clarification in palm oil wastewater treatment by using coagulant composite from palm oil ash. The design of this study was carried out by two steps; first, synthesis of new coagulant composite from palm oil ash which was fused by using Al source combined with Fe source and form to the crystal by the hydrothermal crystallization process. The characterization of coagulant composite from palm oil ash was analyzed by advanced instruments, and The pattern was analyzed by X-ray Diffraction (XRD), chemical composition by X-Ray Fluorescence (XRFS) and morphology characterized by SEM. The second step, the clarification wastewater treatment efficiency of synthetic coagulant composite, was evaluated by coagulation/flocculation process based on the COD, turbidity, phosphate and color removal of wastewater from palm oil factory by varying the coagulant dosage (1-8 %w/v) with no adjusted pH and commercial coagulants (Alum, Ferric Chloride and poly aluminum chloride) which adjusted the pH (6). The results found that the maximum removal of 6% w/v of synthetic coagulant from palm oil ash can remove COD, turbidity, phosphate and color was 88.44%, 93.32%, 93.32% and 93.32%, respectively. The experiments were compared using 6% w/v of commercial coagulants (Alum, Ferric Chloride and Polyaluminum Chloride) can remove COD of 74.29%, 71.43% and 57.14%, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coagulation" title="coagulation">coagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulant" title=" coagulant"> coagulant</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater%20treatment" title=" wastewater treatment"> wastewater treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20utilization" title=" waste utilization"> waste utilization</a>, <a href="https://publications.waset.org/abstracts/search?q=palm%20oil%20ash" title=" palm oil ash"> palm oil ash</a> </p> <a href="https://publications.waset.org/abstracts/141743/the-clarification-of-palm-oil-wastewater-treatment-by-coagulant-composite-from-palm-oil-ash" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141743.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">191</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15269</span> Efficiency and Limits of Physicochemical Treatment of Dairy Wastewater: A Case Study of Dairy Industry in Western Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khedidja%20Benouis">Khedidja Benouis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Environmental issues in the food industry are related to the water because it consumes water and release large volumes of wastewater. The treatment of such discharges techniques can be adapted to different situations encountered. For dairy effluents, it is necessary and very effective to use a treatment that eliminates much of the pollutant load,thus, to drastically reduce the organic loading rate. This study aims to evaluate the Efficiency and limitations of physicochemical treatment by coagulation - flocculation of liquid effluent from this type of food industry in Algeria, to give an example of the type and the degree of pollution generated by this sector and in order to reduce pollution and minimize its environmental issues. Coagulation - flocculation-sedimentation was carried out using lime without addition of additive (flocculant), the processing efficiency is indicated by the concentration of pollutants in treated water. The results show that treatment is not sufficient to remove organic pollution, but it has significantly reduced the Total suspended solids (TSS), nitrate (NO3-N) and phosphate (PO4-P). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Algeria" title="Algeria">Algeria</a>, <a href="https://publications.waset.org/abstracts/search?q=coagulation-flocculation" title=" coagulation-flocculation"> coagulation-flocculation</a>, <a href="https://publications.waset.org/abstracts/search?q=dairy%20effluent" title=" dairy effluent"> dairy effluent</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment" title=" treatment "> treatment </a> </p> <a href="https://publications.waset.org/abstracts/14258/efficiency-and-limits-of-physicochemical-treatment-of-dairy-wastewater-a-case-study-of-dairy-industry-in-western-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14258.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">422</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15268</span> A Combinatorial Approach of Treatment for Landfill Leachate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anusha%20Atmakuri">Anusha Atmakuri</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20D.%20Tyagi"> R. D. Tyagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Patrick%20Drogui"> Patrick Drogui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Landfilling is the most familiar and easy way to dispose solid waste. Landfill is generally received via wastes from municipal near to a landfill. The waste collected is from commercial, industrial, and residential areas and many more. Landfill leachate (LFL) is formed when rainwater passes through the waste placed in landfills and consists of several dissolved organic materials, for instance, aquatic humic substances (AHS), volatile fatty acids (VFAs), heavy metals, inorganic macro components, and xenobiotic organic matters, highly toxic to the environment. These components of LFL put a load on it, hence it necessitates the treatment of LFL prior to its discharge into the environment. Various methods have been used to treat LFL over the years, such as physical, chemical, biological, physicochemical, electrical, and advanced oxidation methods. This study focuses on the combination of biological and electrochemical methods- extracellular polymeric substances and electrocoagulation(EC). The coupling of electro-coagulation process with extracellular polymeric substances (EPS) (as flocculant) as pre and\or post treatment strategy provides efficient and economical process for the decontamination of landfill leachate contaminated with suspended matter, metals (e.g., Fe, Mn) and ammonical nitrogen. Electro-coagulation and EPS mediated coagulation approach could be an economically viable for the treatment of landfill leachate, along with possessing several other advantages over several other methods. This study utilised waste substrates such as activated sludge, crude glycerol and waste cooking oil for the production of EPS using fermentation technology. A comparison of different scenarios for the treatment of landfill leachate is presented- such as using EPS alone as bioflocculant, EPS and EC with EPS being the 1st stage, and EPS and EC with EC being the 1st stage. The work establishes the use of crude EPS as a bioflocculant for the treatment of landfill leachate and wastewater from a site near a landfill, along with EC being successful in removal of some major pollutants such as COD, turbidity, total suspended solids. A combination of these two methods is to be explored more for the complete removal of all pollutants from landfill leachate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=landfill%20leachate" title="landfill leachate">landfill leachate</a>, <a href="https://publications.waset.org/abstracts/search?q=extracellular%20polymeric%20substances" title=" extracellular polymeric substances"> extracellular polymeric substances</a>, <a href="https://publications.waset.org/abstracts/search?q=electrocoagulation" title=" electrocoagulation"> electrocoagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=bioflocculant." title=" bioflocculant."> bioflocculant.</a> </p> <a href="https://publications.waset.org/abstracts/166716/a-combinatorial-approach-of-treatment-for-landfill-leachate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166716.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">86</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=coagulation%20process&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=coagulation%20process&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=coagulation%20process&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=coagulation%20process&page=5">5</a></li> <li class="page-item"><a class="page-link" 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