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oxidation process</title> <meta name="description" content="Search results for: advanced oxidation process"> <meta name="keywords" content="advanced oxidation process"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button 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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="advanced oxidation 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> 17462</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: advanced oxidation process</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17462</span> Review of Suitable Advanced Oxidation Processes for Degradation of Organic Compounds in Produced Water during Enhanced Oil Recovery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Smita%20Krishnan">Smita Krishnan</a>, <a href="https://publications.waset.org/abstracts/search?q=Krittika%20Chandran"> Krittika Chandran</a>, <a href="https://publications.waset.org/abstracts/search?q=Chandra%20Mohan%20Sinnathambi"> Chandra Mohan Sinnathambi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Produced water and its treatment and management are growing challenges in all producing regions. This water is generally considered as a nonrevenue product, but it can have significant value in enhanced oil recovery techniques if it meets the required quality standards. There is also an interest in the beneficial uses of produced water for agricultural and industrial applications. Advanced Oxidation Process is a chemical technology that has been growing recently in the wastewater treatment industry, and it is highly recommended for non-easily removal of organic compounds. The efficiency of AOPs is compound specific, therefore, the optimization of each process should be done based on different aspects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title="advanced oxidation process">advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=photochemical%20processes" title=" photochemical processes"> photochemical processes</a>, <a href="https://publications.waset.org/abstracts/search?q=degradation" title=" degradation"> degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20contaminants" title=" organic contaminants"> organic contaminants</a> </p> <a href="https://publications.waset.org/abstracts/19348/review-of-suitable-advanced-oxidation-processes-for-degradation-of-organic-compounds-in-produced-water-during-enhanced-oil-recovery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19348.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">503</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">17461</span> Evaluation of Washing Performance of Household Wastewater Purified by Advanced Oxidation Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nazl%C4%B1%20%C3%87etinda%C4%9F">Nazlı Çetindağ</a>, <a href="https://publications.waset.org/abstracts/search?q=Pelin%20Y%C4%B1lmaz%20%C3%87etiner"> Pelin Yılmaz Çetiner</a>, <a href="https://publications.waset.org/abstracts/search?q=Metin%20Mert%20%C4%B0lg%C3%BCn"> Metin Mert İlgün</a>, <a href="https://publications.waset.org/abstracts/search?q=Emine%20Birci"> Emine Birci</a>, <a href="https://publications.waset.org/abstracts/search?q=Gizemnur%20Y%C4%B1ld%C4%B1z%20Uysal"> Gizemnur Yıldız Uysal</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96zcan%20Hatipo%C4%9Flu"> Özcan Hatipoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Tuzcuo%C4%9Flu"> Ehsan Tuzcuoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=G%C3%B6khan%20S%C4%B1r"> Gökhan Sır</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Stressing the importance of water conservation, emphasizing the need for efficient management of household water, and underlining the significance of alternative solutions are important. In this context, advanced solutions based on technologies such as the advanced oxidation process have emerged as promising methods for treating household wastewater. Evaluating household water usage holds critical importance for the sustainability of water resources. Researchers and experts are examining various technological approaches to effectively treat and reclaim water for reuse. In this framework, the advanced oxidation process has proven to be an effective method for the removal of various organic and inorganic pollutants in the treatment of household wastewater. In this study, performance will be evaluated by comparing it with the reference case. This international criterion simulates the washing of home textile products, determining various performance parameters. The specially designed stain strips, including sebum, carbon black, blood, cocoa, and red wine, used in experiments, represent various household stains. These stain types were carefully selected to represent challenging stain scenarios, ensuring a realistic assessment of washing performance. Experiments conducted under different temperatures and program conditions successfully demonstrate the practical applicability of the advanced oxidation process for treating household wastewater. It is important to note that both adherence to standards and the use of real-life stain types contribute to the broad applicability of the findings. In conclusion, this study strongly supports the effectiveness of treating household wastewater with the advanced oxidation process in terms of washing performance under both standard and practical application conditions. The study underlines the importance of alternative solutions for sustainable water resource management and highlights the potential of the advanced oxidation process in the treatment of household water, contributing significantly to optimizing water usage and developing sustainable water management solutions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title="advanced oxidation process">advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=household%20water%20usage" title=" household water usage"> household water usage</a>, <a href="https://publications.waset.org/abstracts/search?q=household%20appliance%20waste%20water" title=" household appliance waste water"> household appliance waste water</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20reuse" title=" water reuse"> water reuse</a> </p> <a href="https://publications.waset.org/abstracts/179272/evaluation-of-washing-performance-of-household-wastewater-purified-by-advanced-oxidation-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179272.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">64</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">17460</span> Evaluation of Produced Water Treatment Using Advanced Oxidation Processes and Sodium Ferrate(VI)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Erica%20T.%20R.%20Mendon%C3%A7a">Erica T. R. Mendonça</a>, <a href="https://publications.waset.org/abstracts/search?q=Caroline%20M.%20B.%20de%20Araujo"> Caroline M. B. de Araujo</a>, <a href="https://publications.waset.org/abstracts/search?q=Filho"> Filho</a>, <a href="https://publications.waset.org/abstracts/search?q=Osvaldo%20Chiavone"> Osvaldo Chiavone</a>, <a href="https://publications.waset.org/abstracts/search?q=Sobrinho"> Sobrinho</a>, <a href="https://publications.waset.org/abstracts/search?q=Maur%C3%ADcio%20A.%20da%20Motta"> Maurício A. da Motta</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oil and gas exploration is an essential activity for modern society, although the supply of its global demand has caused enough damage to the environment, mainly due to produced water generation, which is an effluent associated with the oil and gas produced during oil extraction. It is the aim of this study to evaluate the treatment of produced water, in order to reduce its oils and greases content (OG), by using flotation as a pre-treatment, combined with oxidation for the remaining organic load degradation. Thus, there has been tested Advanced Oxidation Process (AOP) using both Fenton and photo-Fenton reactions, as well as a chemical oxidation treatment using sodium ferrate(VI), Na<sub>2</sub>[FeO<sub>4</sub>], as a strong oxidant. All the studies were carried out using real samples of produced water from petroleum industry. The oxidation process using ferrate(VI) ion was studied based on factorial experimental designs. The factorial design was used in order to study how the variables pH, temperature and concentration of Na<sub>2</sub>[FeO<sub>4</sub>] influences the O&G levels. For the treatment using ferrate(VI) ion, the results showed that the best operating point is obtained when the temperature is 28 °C, pH 3, and a 2000 mg.L<sup>-1</sup> solution of Na<sub>2</sub>[FeO<sub>4</sub>] is used. This experiment has achieved a final O&G level of 4.7 mg.L<sup>-1</sup>, which means 94% percentage removal efficiency of oils and greases. Comparing Fenton and photo-Fenton processes, it was observed that the Fenton reaction did not provide good reduction of O&G (around 20% only). On the other hand, a degradation of approximately 80.5% of oil and grease was obtained after a period of seven hours of treatment using photo-Fenton process, which indicates that the best process combination has occurred between the flotation and the photo-Fenton reaction using solar radiation, with an overall removal efficiency of O&G of approximately 89%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title="advanced oxidation process">advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=ferrate%20%28VI%29%20ion" title=" ferrate (VI) ion"> ferrate (VI) ion</a>, <a href="https://publications.waset.org/abstracts/search?q=oils%20and%20greases%20removal" title=" oils and greases removal"> oils and greases removal</a>, <a href="https://publications.waset.org/abstracts/search?q=produced%20water%20treatment" title=" produced water treatment"> produced water treatment</a> </p> <a href="https://publications.waset.org/abstracts/60316/evaluation-of-produced-water-treatment-using-advanced-oxidation-processes-and-sodium-ferratevi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60316.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">319</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">17459</span> Assessment of Advanced Oxidation Process Applicability for Household Appliances Wastewater Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pelin%20Y%C4%B1lmaz%20%C3%87etiner">Pelin Yılmaz Çetiner</a>, <a href="https://publications.waset.org/abstracts/search?q=Metin%20Mert%20%C4%B0lg%C3%BCn"> Metin Mert İlgün</a>, <a href="https://publications.waset.org/abstracts/search?q=Nazl%C4%B1%20%C3%87etinda%C4%9F"> Nazlı Çetindağ</a>, <a href="https://publications.waset.org/abstracts/search?q=Emine%20Birci"> Emine Birci</a>, <a href="https://publications.waset.org/abstracts/search?q=Gizemnur%20Y%C4%B1ld%C4%B1z%20Uysal"> Gizemnur Yıldız Uysal</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%96zcan%20Hatipo%C4%9Flu"> Özcan Hatipoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ehsan%20Tuzcuo%C4%9Flu"> Ehsan Tuzcuoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=G%C3%B6khan%20S%C4%B1r"> Gökhan Sır</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Water scarcity is an inevitable problem affecting more and more people day by day. It is a worldwide crisis and a consequence of rapid population growth, urbanization and overexploitation. Thus, the solutions providing the reclamation of the wastewater are the desired approach. Wastewater contains various substances such as organic, soaps and detergents, solvents, biological substances, and inorganic substances. The physical properties of the wastewater differs regarding to its origin such as commerical, domestic or hospital usage. Thus, the treatment strategy of this type of wastewater is should be comprehensively investigated and properly treated. The advanced oxidation process comes up as a hopeful method associated with the formation of reactive hydroxyl radicals that are highly reactive to oxidize of organic pollutants. This process has a priority on other methods such as coagulation, flocuation, sedimentation and filtration since it was not cause any undesirable by-products. In the present study, it was aimed to investigate the applicability of advanced oxidation process for the treatment of household appliances wastewater. For this purpose, the laboratory studies providing the effectively addressing of the formed radicals to organic pollutants were carried out. Then the effect of process parameters were comprehensively studied by using response surface methodology, Box-Benhken experimental desing. The final chemical oxygen demand (COD) was the main output to evaluate the optimum point providing the expected COD removal. The linear alkyl benzene sulfonate (LAS), total dissolved solids (TDS) and color were measured for the optimum point providing the expected COD removal. Finally, present study pointed out that advanced oxidation process might be efficiently preffered to treat of the household appliances wastewater and the optimum process parameters provided that expected removal of COD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title="advanced oxidation process">advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=household%20appliances%20wastewater" title=" household appliances wastewater"> household appliances wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20reuse" title=" water reuse"> water reuse</a> </p> <a href="https://publications.waset.org/abstracts/179233/assessment-of-advanced-oxidation-process-applicability-for-household-appliances-wastewater-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179233.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">64</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">17458</span> Treatment of Sanitary Landfill Leachate by Advanced Oxidation Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Kerbachi">R. Kerbachi </a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Medkour"> Y. Medkour</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Sahnoune"> F. Sahnoune</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The integrated waste management is an important aspect in the implementation of sustainable development. Leachate generated by sanitary landfills is a high-strength wastewater that is likely to contain large amounts of organic and inorganic matter, with humic substances, as well as ammonia nitrogen, heavy metals, chlorinated organic and inorganic salts. Untreated leachates create a great potential for harm to the environment, they can permeate ground water or mix with surface water and contribute to the pollution of soil, ground water, and surface water. In Algeria, the treatment of landfill leachate is the weakest link in the solid waste management. This study focuses on the evaluation of the pollution load carried by leachate produced in a former sanitary landfill located to the west of Algiers and the implementation of advanced oxidation treatment (advanced oxidation process, AOP), Fenton, electro-Fenton etc. The characterization of these leachates shows that they have a high organic load, mineral and nitrogen. Measured COD reaches very high values of the order of 5000 to 20,000 mg O2 / L. On this non-biodegradable leachate, treatment tests have been carried out by the methods of coagulation-flocculation, Fenton oxidation, electrocoagulation and electro-Fenton. The removal efficiencies of pollution obtained for each of these modes of treatment are respectively 69, 80, 84 and 97%. The study shows that advanced oxidation processes are very suitable for the treatment of poorly biodegradable leachate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20processes" title="advanced oxidation processes">advanced oxidation processes</a>, <a href="https://publications.waset.org/abstracts/search?q=electrocoagulation" title=" electrocoagulation"> electrocoagulation</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-Fenton" title=" electro-Fenton"> electro-Fenton</a>, <a href="https://publications.waset.org/abstracts/search?q=leachates%20treatment" title=" leachates treatment"> leachates treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=sanitary%20landfill" title=" sanitary landfill"> sanitary landfill</a> </p> <a href="https://publications.waset.org/abstracts/39874/treatment-of-sanitary-landfill-leachate-by-advanced-oxidation-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39874.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">298</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">17457</span> Selective Oxidation of 6Mn-2Si Advanced High Strength Steels during Intercritical Annealing Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maedeh%20Pourmajidian">Maedeh Pourmajidian</a>, <a href="https://publications.waset.org/abstracts/search?q=Joseph%20R.%20McDermid"> Joseph R. McDermid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Advanced High Strength Steels are revolutionizing both the steel and automotive industries due to their high specific strength and ability to absorb energy during crash events. This allows manufacturers to design vehicles with significantly increased fuel efficiency without compromising passenger safety. To maintain the structural integrity of the fabricated parts, they must be protected from corrosion damage through continuous hot-dip galvanizing process, which is challenging due to selective oxidation of Mn and Si on the surface of this AHSSs. The effects of process atmosphere oxygen partial pressure and small additions of Sn on the selective oxidation of a medium-Mn C-6Mn-2Si advanced high strength steel was investigated. Intercritical annealing heat treatments were carried out at 690˚C in an N2-5%H2 process atmosphere under dew points ranging from –50˚C to +5˚C. Surface oxide chemistries, morphologies, and thicknesses were determined at a variety of length scales by several techniques, including SEM, TEM+EELS, and XPS. TEM observations of the sample cross-sections revealed the transition to internal oxidation at the +5˚C dew point. EELS results suggested that the internal oxides network was composed of a multi-layer oxide structure with varying chemistry from oxide core towards the outer part. The combined effect of employing a known surface active element as a function of process atmosphere on the surface structure development and the possible impact on reactive wetting of the steel substrates by the continuous galvanizing zinc bath will be discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=3G%20AHSS" title="3G AHSS">3G AHSS</a>, <a href="https://publications.waset.org/abstracts/search?q=hot-dip%20galvanizing" title=" hot-dip galvanizing"> hot-dip galvanizing</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygen%20partial%20pressure" title=" oxygen partial pressure"> oxygen partial pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=selective%20oxidation" title=" selective oxidation"> selective oxidation</a> </p> <a href="https://publications.waset.org/abstracts/58103/selective-oxidation-of-6mn-2si-advanced-high-strength-steels-during-intercritical-annealing-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58103.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">398</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">17456</span> Comparative Study of Fenton and Activated Carbon Treatment for Dyeing Waste Water</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prem%20Mohan">Prem Mohan</a>, <a href="https://publications.waset.org/abstracts/search?q=Namrata%20Jariwala"> Namrata Jariwala</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years 10000 dyes are approximately used by dying industry which makes dyeing wastewater more complex in nature. It is very difficult to treat dyeing wastewater by conventional methods. Here an attempt has been made to treat dyeing wastewater by the conventional and advanced method for removal of COD. Fenton process is the advanced method and activated carbon treatment is the conventional method. Experiments have been done on synthetic wastewater prepared from three different dyes; acidic, disperse and reactive. Experiments have also been conducted on real effluent obtained from industry. The optimum dose of catalyst and hydrogen peroxide in Fenton process and optimum activated carbon dose for each of these wastewaters were obtained. In Fenton treatment, COD removal was obtained up to 95% whereas 70% removal was obtained with activated carbon treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=activated%20carbon" title="activated carbon">activated carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title=" advanced oxidation process"> advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=dyeing%20waste%20water" title=" dyeing waste water"> dyeing waste water</a>, <a href="https://publications.waset.org/abstracts/search?q=fenton%20oxidation%20process" title=" fenton oxidation process"> fenton oxidation process</a> </p> <a href="https://publications.waset.org/abstracts/81307/comparative-study-of-fenton-and-activated-carbon-treatment-for-dyeing-waste-water" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81307.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">211</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">17455</span> Elimination of Contaminants of Emerging Concerns by Peracetic Acid and Advanced Oxidation Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Rahim%20Al%20Umairi">Abdul Rahim Al Umairi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Gamal%20El-Din"> Mohamed Gamal El-Din</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The removal of the selected contaminants of emerging concerns (CECs) presented under related environmental conditions by Peracetic Acid (PAA) and PAA-UV photolysis processes was examined in this study. A mixture of (CECs) (pesticides and pharmaceutical compounds) was prepared inclean water and treated with different doses of PAA (3.2, 6.4, and 9.6 mg/L) under different pH values (5.2, 7.2, and 9.2). The results revealed that the reactivity of the selected CECs with PAA was classified into three groups: Group 1 poorly reactive (removal <25%), Group2 moderately reactive (removal 25% to 50%), and Group 3 highly reactive (> 50%). Group1 includes atrazine (ATZ) and fluconazole (FCL), Group2 includes carbamazepine (CBZ), sulfamethoxazole (SMX), trimethoprim (TMP), mecoprop (MCPP), diazinon (DZN) and Group 3 includes perfluorooctanoic acid (PFOA) and clindamycin (CLN). The pH was found to affect the CECs' degradation differently, for Group 1 and Group 3, better removal was achieved in the acidand alkaline medium. In contrast, for Group 2 pH effects were not well pronounced. PAA-UV photolysis processes were explored to degrade the recalcitrant indicators compounds: ATZ (Group1) and SMX(Group2). PAA-UV process showed no improvement in the removal of ATZ. In contrast, PAA-UV removed SMX drastically with a pseudo decay rate constant of 0.014 cm2/mJ compared to 0.002 cm2/mJ by UV alone. The contribution of hydroxyl radical to the degradation process using the PAA-UV process was found to be negligible. This study illustratedPAA's capability on the degradation of the CECs presented in relative environmental conditions and unveiled the potential of using PAA-UV processes as advanced oxidation processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process" title="advanced oxidation process">advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=contaminants%20of%20emerging%20concerns" title=" contaminants of emerging concerns"> contaminants of emerging concerns</a>, <a href="https://publications.waset.org/abstracts/search?q=peracetic%20acid" title=" peracetic acid"> peracetic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=hydroxyl%20radical" title=" hydroxyl radical"> hydroxyl radical</a> </p> <a href="https://publications.waset.org/abstracts/157054/elimination-of-contaminants-of-emerging-concerns-by-peracetic-acid-and-advanced-oxidation-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157054.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">129</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">17454</span> The Effect of Oxidation Stability Improvement in Calophyllum Inophyllum Palm Oil Methyl Ester Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Natalina">Natalina</a>, <a href="https://publications.waset.org/abstracts/search?q=Hwai%20Chyuan%20Onga"> Hwai Chyuan Onga</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20T.%20Chonga"> W. T. Chonga </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oxidation stability of biodiesel is very important in fuel handling especially for remote location of biodiesel application. Variety of feedstocks and biodiesel production process resulted many variation of biodiesel oxidation stability. The current study relates to investigation of the impact of fatty acid composition that caused by natural and production process of calophyllum inophyllum palm oil methyl ester that correlated with improvement of biodiesel oxidation stability. Firstly, biodiesel was produced from crude oil of palm oil, calophyllum inophyllum and mixing of calophyllum inophyllum and palm oil. The production process of calophyllum inophyllum palm oil methyl ester (CIPOME) was divided by including washing process and without washing. Secondly, the oxidation stability was measured from the palm oil methyl ester (POME), calophyllum inophyllum methyl ester (CIME), CIPOME with washing process and CIPOME without washing process. Then, in order to find the differences of fatty acid compositions all of the biodiesels were measured by gas chromatography analysis. It was found that mixing calophyllum inophyllum into palm oil increased the oxidation stability. Washing process influenced the CIPOME fatty acid composition, and reduction of washing process during the production process gave significant oxidation stability number of CIPOME (38 h to 114 h). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title="biodiesel">biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation%20stability" title=" oxidation stability"> oxidation stability</a>, <a href="https://publications.waset.org/abstracts/search?q=calophyllum%20inophyllum" title=" calophyllum inophyllum"> calophyllum inophyllum</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20content" title=" water content"> water content</a> </p> <a href="https://publications.waset.org/abstracts/39777/the-effect-of-oxidation-stability-improvement-in-calophyllum-inophyllum-palm-oil-methyl-ester-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39777.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">270</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">17453</span> Advanced Oxidation Processes as a Pre-oxidation Step for Biological Treatment of Leachate from Technical Landfills</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ala%20Abdessemed">Ala Abdessemed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Seddik%20Oussama%20Belahmadi"> Mohamed Seddik Oussama Belahmadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nabil%20Charchar"> Nabil Charchar</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdefettah%20Gherib"> Abdefettah Gherib</a>, <a href="https://publications.waset.org/abstracts/search?q=Bradai%20Fares"> Bradai Fares</a>, <a href="https://publications.waset.org/abstracts/search?q=Boussadia%20Chouaib%20Nour%20El-Islem"> Boussadia Chouaib Nour El-Islem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Algerian cities are confronted with large quantities of waste generated by the disposal of household and similar residues in technical landfills (CET), such as the one in the location of Batna. The interaction between waste components and incoming water generates leachates rich in organic matter and trace elements, which require treatment before discharge. The aim of this study was to propose an effective process for treating the leachates, which were subjected to an initial chemical treatment using the (H₂O₂/UV) system. Optimal treatment conditions were determined at [H₂O₂] of 0.3 M and pH of 8.6. Next, two hybrid biological treatment systems were applied: hybrid system I (H₂O₂/UV/bacteria) and hybrid system II (H₂O₂/UV/bacteria/microalgae). The three processes resulted in the following degradation rates, expressed in terms of total organic carbon (TOC) 27.4% for the (H₂O₂/UV) system; 58.1% for the hybrid system I (H₂O₂/UV/Bacteria); 67.86% for the hybrid system II (H₂O₂/UV/Bacteria/Microalgae). This study demonstrates that a hybrid approach combining advanced oxidation processes and biological treatments is a highly effective alternative to achieve satisfactory treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=leachate" title="leachate">leachate</a>, <a href="https://publications.waset.org/abstracts/search?q=landfill" title=" landfill"> landfill</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20processes" title=" advanced oxidation processes"> advanced oxidation processes</a>, <a href="https://publications.waset.org/abstracts/search?q=biological%20treatment" title=" biological treatment"> biological treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=bacteria" title=" bacteria"> bacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=microalgae" title=" microalgae"> microalgae</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20organic%20carbon" title=" total organic carbon"> total organic carbon</a> </p> <a href="https://publications.waset.org/abstracts/174615/advanced-oxidation-processes-as-a-pre-oxidation-step-for-biological-treatment-of-leachate-from-technical-landfills" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174615.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">70</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">17452</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">17451</span> Degradation of Amitriptyline Hydrochloride, Methyl Salicylate and 2-Phenoxyethanol in Water Systems by the Combination UV/Cl2</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Javier%20Benitez">F. Javier Benitez</a>, <a href="https://publications.waset.org/abstracts/search?q=Francisco%20J.%20Real"> Francisco J. Real</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Luis%20Acero"> Juan Luis Acero</a>, <a href="https://publications.waset.org/abstracts/search?q=Francisco%20Casas"> Francisco Casas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Three emerging contaminants (amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol) frequently found in waste-waters were selected to be individually degraded in ultra-pure water by the combined advanced oxidation process constituted by UV radiation and chlorine. The influence of pH, initial chlorine concentration and nature of the contaminants was firstly explored. The trend for the reactivity of the selected compounds was deduced: amitriptyline hydrochloride > methyl salicylate > 2-phenoxyethanol. A later kinetic study was carried out and focused on the specific evaluation of the first-order rate constants and the determination of the partial contribution to the global reaction of the direct photochemical pathway and the radical pathway. A comparison between the rate constant values among photochemical experiments without and with the presence of Cl<sub>2</sub> reveals a clear increase in the oxidation efficiency of the combined process with respect to the photochemical reaction alone. In a second stage, the simultaneous oxidation of mixtures of the selected contaminants in several types of water (ultrapure water, surface water from a reservoir, and two secondary effluents) was also performed by the same combination UV/Cl<sub>2 </sub>under more realistic operating conditions. The efficiency of this combined system UV/Cl<sub>2</sub> was compared to other oxidants such as the UV/S<sub>2</sub>O<sub>8</sub><sup>2- </sup>and UV/H<sub>2</sub>O<sub>2</sub> AOPs. Results confirmed that the UV/Cl<sub>2</sub> system provides higher elimination efficiencies among the AOPs tested. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=emerging%20contaminants" title="emerging contaminants">emerging contaminants</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%2Fchlorine%20advanced%20oxidation%20process" title=" UV/chlorine advanced oxidation process"> UV/chlorine advanced oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=amitriptyline" title=" amitriptyline"> amitriptyline</a>, <a href="https://publications.waset.org/abstracts/search?q=methyl%20salicylate" title=" methyl salicylate"> methyl salicylate</a>, <a href="https://publications.waset.org/abstracts/search?q=2-phenoxyethanol" title=" 2-phenoxyethanol"> 2-phenoxyethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=chlorination" title=" chlorination"> chlorination</a>, <a href="https://publications.waset.org/abstracts/search?q=photolysis" title=" photolysis"> photolysis</a> </p> <a href="https://publications.waset.org/abstracts/51159/degradation-of-amitriptyline-hydrochloride-methyl-salicylate-and-2-phenoxyethanol-in-water-systems-by-the-combination-uvcl2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51159.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">333</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">17450</span> Application of Tocopherol as Antioxidant to Reduce Decomposition Process on Palm Oil Biodiesel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Supriyono">Supriyono</a>, <a href="https://publications.waset.org/abstracts/search?q=Sumardiyono"> Sumardiyono</a>, <a href="https://publications.waset.org/abstracts/search?q=Rendy%20J.%20Pramono"> Rendy J. Pramono</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biodiesel is one of the alternative fuels promising for substituting petrodiesel as energy source which has an advantage as it is sustainable and eco-friendly. Due to the raw material that tends to decompose during storage, biodiesel also has the same characteristic that tends to decompose during storage. Biodiesel decomposition will form higher acid value as the result of oxidation to double bond on a fatty acid compound on biodiesel. Thus, free fatty acid value could be used to evaluate degradation of biodiesel due to the oxidation process. High free fatty acid on biodiesel could impact on the engine performance. Decomposition of biodiesel due to oxidation reaction could prevent by introducing a small amount of antioxidant. The origin of raw materials and the process for producing biodiesel will determine the effectiveness of antioxidant. Biodiesel made from high free fatty acid (FFA) crude palm oil (CPO) by using two steps esterification is vulnerable to oxidation process which is resulted in increasing on the FFA value. Tocopherol also known as vitamin E is one of the antioxidant that could improve the stability of biodiesel due to decomposition by the oxidation process. Tocopherol 0.5% concentration on palm oil biodiesel could reduce 13% of increasing FFA under temperature 80 °C and exposing time 180 minute. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title="antioxidant">antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=palm%20oil%20biodiesel" title=" palm oil biodiesel"> palm oil biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=decomposition" title=" decomposition"> decomposition</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=tocopherol" title=" tocopherol"> tocopherol</a> </p> <a href="https://publications.waset.org/abstracts/49087/application-of-tocopherol-as-antioxidant-to-reduce-decomposition-process-on-palm-oil-biodiesel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49087.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">354</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">17449</span> Comparative Study of Isothermal and Cyclic Oxidation on Titanium Alloys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Poonam%20Yadav">Poonam Yadav</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Bok%20Lee"> Dong Bok Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Isothermal oxidation at 800°C for 50h and Cyclic oxidation at 600°C and 800°C for 40h of Pure Ti and Ti64 were performed in a muffle furnace. In Cyclic oxidation, massive scale spallation occurred, and the oxide scale cracks and peels off were observed at high temperature, it represents oxide scale that formed during cyclic oxidation was spalled out owing to stresses due to thermal shock generated during repetitive oxidation and subsequent cooling. The thickness of scale is larger in cyclic oxidation than the isothermal case. This is due to inward diffusion of oxygen through oxide scales and/or pores and cracks in cyclic oxidation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyclic" title="cyclic">cyclic</a>, <a href="https://publications.waset.org/abstracts/search?q=diffusion" title=" diffusion"> diffusion</a>, <a href="https://publications.waset.org/abstracts/search?q=isothermal" title=" isothermal"> isothermal</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic" title=" cyclic"> cyclic</a> </p> <a href="https://publications.waset.org/abstracts/19120/comparative-study-of-isothermal-and-cyclic-oxidation-on-titanium-alloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19120.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">919</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">17448</span> Micropollutant Carbamazepine: Its Occurrences, Toxicological Effects, and Possible Degradation Methods (Review)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Azad%20Khalid">Azad Khalid</a>, <a href="https://publications.waset.org/abstracts/search?q=Sifa%20Dogan"> Sifa Dogan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Because of its persistence in conventional treatment plants and broad prevalence in water bodies, the pharmaceutical chemical carbamazepine (CBZ) has been suggested as an anthropogenic marker to evaluate water quality. This study provides a thorough examination of the origins and occurrences of CBZ in water bodies, as well as the drug's toxicological effects and laws. Given CBZ's well-documented negative consequences on the human body when used medicinally, cautious monitoring in water is advised. CBZ residues in drinking water may enter embryos and newborns via intrauterine exposure or breast-feeding, causing congenital abnormalities and/or neurodevelopmental issues over time. The insufficiency of solo solutions was shown after an in-depth technical study of traditional and sophisticated treatment technologies. Nanofiltration and reverse osmosis membranes are more successful at removing CBZ than traditional activated sludge and membrane bioreactor techniques. Recent research has shown that severe chemical cleaning, which is essential to prevent membrane fouling, may lower long-term removal efficiency. Furthermore, despite the efficacy of activated carbon adsorption and advanced oxidation processes, a few issues such as chemical cost and activated carbon renewal must be carefully examined. Individual technology constraints lead to the benefits of combined and hybrid systems, namely the heterogeneous advanced oxidation process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbamazepine" title="carbamazepine">carbamazepine</a>, <a href="https://publications.waset.org/abstracts/search?q=occurrence" title=" occurrence"> occurrence</a>, <a href="https://publications.waset.org/abstracts/search?q=toxicity" title=" toxicity"> toxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=conventical%20treatment" title=" conventical treatment"> conventical treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20process%20%28AOPs%29" title=" advanced oxidation process (AOPs)"> advanced oxidation process (AOPs)</a> </p> <a href="https://publications.waset.org/abstracts/151086/micropollutant-carbamazepine-its-occurrences-toxicological-effects-and-possible-degradation-methods-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151086.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">96</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">17447</span> Catalytic Effect of Graphene Oxide on the Oxidation of Paraffin-Based Fuels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lin-Lin%20Liu">Lin-Lin Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Song-Qi%20Hu"> Song-Qi Hu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yin%20Wang"> Yin Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Paraffin-based fuels are regarded to be a promising fuel of hybrid rocked motor because of the high regression rate, low price, and environmental friendliness. Graphene Oxide (GO) is an attractive energetic material which is expected to be widely used in propellants, explosives, and some high energy fuels. Paraffin-based fuels with paraffin and GO as raw materials were prepared, and the oxidation process of the samples was investigated by thermogravimetric analysis differential scanning calorimetry (TG/DSC) under oxygen (O₂) and nitrous oxide (N₂O) atmospheres. The oxidation reaction kinetics of the fuels was estimated through the non-isothermal measurements and model-free isoconversional methods based on the experimental results of TGA. The results show that paraffin-based fuels are easier oxidized under O₂ rather than N₂O with atmospheres due to the lower activation energy; GO plays a catalytic role for the oxidation of paraffin-based fuels under the both atmospheres, and the activation energy of the oxidation process decreases with the increase of GO; catalytic effect of GO on the oxidation of paraffin-based fuels are more obvious under O₂ atmospheres than under N₂O atmospheres. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene%20oxide" title="graphene oxide">graphene oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=paraffin-based%20fuels" title=" paraffin-based fuels"> paraffin-based fuels</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=activation%20energy" title=" activation energy"> activation energy</a>, <a href="https://publications.waset.org/abstracts/search?q=TGA" title=" TGA"> TGA</a> </p> <a href="https://publications.waset.org/abstracts/74018/catalytic-effect-of-graphene-oxide-on-the-oxidation-of-paraffin-based-fuels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74018.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">402</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">17446</span> Phenol Degradation via Photocatalytic Oxidation Using Fe Doped TiO₂</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sherif%20Ismail">Sherif Ismail</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Degradation of phenol-contaminated wastewater using Photocatalytic oxidation process was investigated in batch experiments using Fe doped TiO₂. Moreover, the effect of oxygen aeration on the performance of photocatalytic oxidation process by iron (Fe⁺²) doped titanium dioxide (TiO₂) was assessed. Photocatalytic oxidation using Fe doped TiO₂ effectively reduce the phenol concentration in wastewater with optimum condition of light intensity, pH, catalyst-dosing and initial concentration of phenol were 50 W/m2, 5.3, 600 mg/l and 10 mg/l respectively. The results obtained that removal efficiency of phenol was 88% after 180 min in case of N₂ addition. However, aeration by oxygen resulted in a 99% removal efficiency in 120 min. The results of photo-catalysis oxidation experiments fitted the pseudo-first-order kinetic equation with high correlation. Costs estimation of 30 m3/d full-scale photo-catalysis oxidation plant was assessed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phenol%20degradation" title="phenol degradation">phenol degradation</a>, <a href="https://publications.waset.org/abstracts/search?q=Fe-doped%20TiO2" title=" Fe-doped TiO2"> Fe-doped TiO2</a>, <a href="https://publications.waset.org/abstracts/search?q=AOPs" title=" AOPs"> AOPs</a>, <a href="https://publications.waset.org/abstracts/search?q=cost%20analysis" title=" cost analysis"> cost analysis</a> </p> <a href="https://publications.waset.org/abstracts/90365/phenol-degradation-via-photocatalytic-oxidation-using-fe-doped-tio2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90365.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">163</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">17445</span> Microstructure and Oxidation Behaviors of Al, Y Modified Silicide Coatings Prepared on an Nb-Si Based Ultrahigh Temperature Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiping%20Guo">Xiping Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jing%20Li"> Jing Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The microstructure of an Si-Al-Y co-deposition coating prepared on an Nb-Si based ultra high temperature alloy by pack cementation process at 1250°C for eight hours was studied. The results showed that the coating was composed of a (Nb,X)Si₂ (X represents Ti, Cr and Hf elements) outer layer, a (Ti,Nb)₅Si₄ middle layer and an Al, Cr-rich inner layer. For comparison, the oxidation behaviors of the coating at 800, 1050 and 1350°C were investigated respectively. Linear oxidation kinetics was found with the parabolic rate constants of 5.29×10⁻², 9×10⁻²and 5.81 mg² cm⁻⁴ h⁻¹, respectively. Catastrophic pesting oxidation has not been found at 800°C even for 100 h. The surface of the scale was covered by compact glassy SiO₂ film. The coating was able to effectively protect the Nb-Si based alloy from oxidation at 1350°C for at least 100 h. The formation process of the scale was testified following an epitaxial growth mechanism. The mechanism responsible for the oxidation behavior of the Si-Al-Y co-deposition coating at 800, 1050 and 1350°C was proposed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nb-Si%20based%20ultra%20high%20temperature%20alloy" title="Nb-Si based ultra high temperature alloy">Nb-Si based ultra high temperature alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation%20resistance" title=" oxidation resistance"> oxidation resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=pack%20cementation" title=" pack cementation"> pack cementation</a>, <a href="https://publications.waset.org/abstracts/search?q=silicide%20coating" title=" silicide coating"> silicide coating</a>, <a href="https://publications.waset.org/abstracts/search?q=Al%20and%20Y%20modified" title=" Al and Y modified"> Al and Y modified</a> </p> <a href="https://publications.waset.org/abstracts/78981/microstructure-and-oxidation-behaviors-of-al-y-modified-silicide-coatings-prepared-on-an-nb-si-based-ultrahigh-temperature-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78981.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">17444</span> Optimization of Fenton Process for the Treatment of Young Municipal Leachate </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouchra%20Wassate">Bouchra Wassate</a>, <a href="https://publications.waset.org/abstracts/search?q=Younes%20Karhat"> Younes Karhat</a>, <a href="https://publications.waset.org/abstracts/search?q=Khadija%20El%20Falaki"> Khadija El Falaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Leachate is a source of surface water and groundwater contamination if it has not been pretreated. Indeed, due to its complex structure and its pollution load make its treatment extremely difficult to achieve the standard limits required. The objective of this work is to show the interest of advanced oxidation processes on leachate treatment of urban waste containing high concentrations of organic pollutants. The efficiency of Fenton (Fe2+ +H2O2 + H+) reagent for young leachate recovered from collection trucks household waste in the city of Casablanca, Morocco, was evaluated with the objectives of chemical oxygen demand (COD) and discoloration reductions. The optimization of certain physicochemical parameters (initial pH value, reaction time, and [Fe2+], [H2O2]/ [Fe2+] ratio) has yielded good results in terms of reduction of COD and discoloration of the leachate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=COD%20removal" title="COD removal">COD removal</a>, <a href="https://publications.waset.org/abstracts/search?q=color%20removal" title=" color removal"> color removal</a>, <a href="https://publications.waset.org/abstracts/search?q=Fenton%20process" title=" Fenton process"> Fenton process</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation%20process" title=" oxidation process"> oxidation process</a>, <a href="https://publications.waset.org/abstracts/search?q=leachate" title=" leachate "> leachate </a> </p> <a href="https://publications.waset.org/abstracts/33168/optimization-of-fenton-process-for-the-treatment-of-young-municipal-leachate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33168.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">286</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">17443</span> Efficiently Degradation of Perfluorooctanoic Acid, an Emerging Contaminant, by a Hybrid Process of Membrane Distillation Process and Electro-Fenton</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afrouz%20Yousefi">Afrouz Yousefi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohtada%20Sadrzadeh"> Mohtada Sadrzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The widespread presence of poly- and perfluoroalkyl substances (PFAS) poses a significant concern due to their ability to accumulate in living organisms and their persistence in the environment, thanks to their robust carbon-fluorine (C-F) bonds, which require substantial energy to break (485 kJ/mol). The prevalence of toxic PFAS compounds can be highly detrimental to ecosystems, wildlife, and human health. Ongoing efforts are dedicated to investigating methods for fully breaking down and eliminating PFAS from the environment. Among the various techniques employed, advanced oxidation processes have shown promise in completely breaking down emerging contaminants in wastewater. However, the drawback lies in the relatively slow reaction rates of these processes and the substantial energy input required, which currently impedes their widespread commercial adoption. We developed a hybrid process, comprising electro-Fenton as an advanced oxidation process and membrane distillation, to simultaneously degrade organic PFAS pollutants and extract pure water from the mixture. In this study, environmentally persistent perfluorooctanoic acid (PFOA), as an emerging contaminant, was used to study the effectiveness of the electro-Fenton/membrane distillation hybrid system. The PFOA degradation studies were conducted in two modes: electro-Fenton and electro-Fenton coupled with membrane distillation. High-performance liquid chromatography with ultraviolet detection (HPLC-UV), ion-chromatography (measuring fluoride ion concentration), total organic carbon (TOC) decay, mineralization current efficiency (MCE), and specific energy consumption (SEC) were evaluated for a single EF and hybrid EF-MD processes. In contrast to a single EF reaction, TOC decay improved significantly in the EF-MD process. Overall, the MCE of hybrid processes surpassed 100% while it remained under 50% for a single EF reaction. Calculations of specific energy consumption (SEC) demonstrated a substantial decrease of nearly one-third in energy usage when integrating the EF reaction with the MD process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water%20treatment" title="water treatment">water treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=PFAS" title=" PFAS"> PFAS</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane%20distillation" title=" membrane distillation"> membrane distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-Fenton" title=" electro-Fenton"> electro-Fenton</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation" title=" advanced oxidation"> advanced oxidation</a> </p> <a href="https://publications.waset.org/abstracts/173475/efficiently-degradation-of-perfluorooctanoic-acid-an-emerging-contaminant-by-a-hybrid-process-of-membrane-distillation-process-and-electro-fenton" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173475.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">63</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">17442</span> Optimizing Oxidation Process Parameters of Al-Li Base Alloys Using Taguchi Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muna%20K.%20Abbass">Muna K. Abbass</a>, <a href="https://publications.waset.org/abstracts/search?q=Laith%20A.%20Mohammed"> Laith A. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Muntaha%20K.%20Abbas"> Muntaha K. Abbas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The oxidation of Al-Li base alloy containing small amounts of rare earth (RE) oxides such as 0.2 wt% Y2O3 and 0.2wt% Nd2O3 particles have been studied at temperatures: 400ºC, 500ºC and 550°C for 60hr in a dry air. Alloys used in this study were prepared by melting and casting in a permanent steel mould under controlled atmosphere. Identification of oxidation kinetics was carried out by using weight gain/surface area (∆W/A) measurements while scanning electron microscopy (SEM) and x-ray diffraction analysis were used for micro structural morphologies and phase identification of the oxide scales. It was observed that the oxidation kinetic for all studied alloys follows the parabolic law in most experimental tests under the different oxidation temperatures. It was also found that the alloy containing 0.2 wt %Y 2O3 particles possess the lowest oxidation rate and shows great improvements in oxidation resistance compared to the alloy containing 0.2 wt % Nd2O3 particles and Al-Li base alloy. In this work, Taguchi method is performed to estimate the optimum weight gain /area (∆W/A) parameter in oxidation process of Al-Li base alloys to obtain a minimum thickness of oxidation layer. Taguchi method is used to formulate the experimental layout, to analyses the effect of each parameter (time, temperature and alloy type) on the oxidation generation and to predict the optimal choice for each parameter and analyzed the effect of these parameters on the weight gain /area (∆W/A) parameter. The analysis shows that, the temperature significantly affects on the (∆W/A) parameter. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Li%20base%20alloy" title="Al-Li base alloy">Al-Li base alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi%20method" title=" Taguchi method"> Taguchi method</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature "> temperature </a> </p> <a href="https://publications.waset.org/abstracts/11322/optimizing-oxidation-process-parameters-of-al-li-base-alloys-using-taguchi-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11322.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">372</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">17441</span> Formation of Protective Silicide-Aluminide Coating on Gamma-TiAl Advanced Material</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Nouri">S. Nouri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the Si-aluminide coating was prepared on gamma-TiAl [Ti-45Al-2Nb-2Mn-1B (at. %)] via liquid-phase slurry procedure. The high temperature oxidation resistance of this diffusion coating was evaluated at 1100 °C for 400 hours. The results of the isothermal oxidation showed that the formation of Si-aluminide coating can remarkably improve the high temperature oxidation of bare gamma-TiAl alloy. The identification of oxide scale microstructure showed that the formation of protective Al<sub>2</sub>O<sub>3</sub>+SiO<sub>2</sub> mixed oxide scale along with a continuous, compact and uniform layer of Ti<sub>5</sub>Si<sub>3</sub> beneath the surface oxide scale can act as an oxygen diffusion barrier during the high temperature oxidation. The other possible mechanisms related to the formation of Si-aluminide coating and oxide scales were also discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gamma-TiAl%20alloy" title="Gamma-TiAl alloy">Gamma-TiAl alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20temperature%20oxidation" title=" high temperature oxidation"> high temperature oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=Si-aluminide%20coating" title=" Si-aluminide coating"> Si-aluminide coating</a>, <a href="https://publications.waset.org/abstracts/search?q=slurry%20procedure" title=" slurry procedure"> slurry procedure</a> </p> <a href="https://publications.waset.org/abstracts/105858/formation-of-protective-silicide-aluminide-coating-on-gamma-tial-advanced-material" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105858.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">178</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">17440</span> Isothermal and Cyclic Oxidation of the Ti-6Al-4V Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Poonam%20Yadav">Poonam Yadav</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Bok%20Lee"> Dong Bok Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the Ti-6Al-4V alloy was isothermally and cyclically oxidized at 800oC for 40 hours in air, and its oxidation behavior was characterized in terms of its oxidation rate, scaling rate, and scale spallation tendency. The isothermal oxidation tests indicated that Ti-6Al-4V oxidized fast and almost linearly, forming thick oxide scales. However, the scales that formed during isothermal oxidation were adherent. The cyclic oxidation tests indicated that the scales that formed on Ti-6Al-4V were highly susceptible to spallation owing to the large growth stress arisen and the thermal stress imposed during thermal cyclings. The formed scales frequently delaminated into several pieces owing to the excessive stress aroused by the repetitive thermal shock. Particularly, excessive oxidation and heavy spallation occurred at the edge of Ti-6Al-4V during cyclic oxidation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyclic" title="cyclic">cyclic</a>, <a href="https://publications.waset.org/abstracts/search?q=isothermal" title=" isothermal"> isothermal</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=spallation" title=" spallation"> spallation</a> </p> <a href="https://publications.waset.org/abstracts/28970/isothermal-and-cyclic-oxidation-of-the-ti-6al-4v-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28970.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">371</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">17439</span> Microstructures of Si Surfaces Fabricated by Electrochemical Anodic Oxidation with Agarose Stamps</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hang%20Zhou">Hang Zhou</a>, <a href="https://publications.waset.org/abstracts/search?q=Limin%20Zhu"> Limin Zhu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the fabrication of microstructures on Si surfaces by using electrochemical anodic oxidation with agarose stamps. The fabricating process is based on a selective anodic oxidation reaction that occurs in the contact area between a stamp and a Si substrate. The stamp which is soaked in electrolyte previously acts as a current flow channel. After forming the oxide patterns as an etching mask, a KOH aqueous is used for the wet etching of Si. A complicated microstructure array of 1 cm2 was fabricated by the method with high accuracy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microstructures" title="microstructures">microstructures</a>, <a href="https://publications.waset.org/abstracts/search?q=anodic%20oxidation" title=" anodic oxidation"> anodic oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon" title=" silicon"> silicon</a>, <a href="https://publications.waset.org/abstracts/search?q=agarose%20stamps" title=" agarose stamps"> agarose stamps</a> </p> <a href="https://publications.waset.org/abstracts/57259/microstructures-of-si-surfaces-fabricated-by-electrochemical-anodic-oxidation-with-agarose-stamps" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57259.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">305</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">17438</span> Electro-Oxidation of Glycerol Using Nickel Deposited Carbon Ceramic Electrode and Product Analysis Using High Performance Liquid Chromatography</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mulatu%20Kassie%20Birhanu">Mulatu Kassie Birhanu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electro-oxidation of glycerol is an important process to convert the less price glycerol into other expensive (essential) and energy-rich chemicals. In this study, nickel was electro-deposited on laboratory-made carbon ceramic electrode (CCE) substrate using electrochemical techniques that is cyclic voltammetry (CV) to prepare an electro-catalyst (Ni/CCE) for electro-oxidation of glycerol. Carbon ceramic electrode was prepared from graphite and methyl tri-methoxy silane (MTMOS) through the processes called hydrolysis and condensation with methanol in acidic media (HCl) by a sol-gel technique. Physico-chemical characterization of bare CCE and modified (deposited) CCE (Ni/CCE) was measured and evaluated by Fourier Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD). Electro-oxidation of glycerol was performed in 0.1 M glycerol in alkaline media (0.5 M NaOH). High-Performance Liquid Chromatography (HPLC) technique was used to identify and determine the concentration of glycerol, reaction intermediates and oxidized products of glycerol after its electro-oxidation is performed. The conversion (%) of electro-oxidation of glycerol during 9-hour oxidation was 73% and 36% at 1.8V and 1.6V vs. RHE, respectively. Formate, oxalate, glycolate and glycerate are the main oxidation products of glycerol with selectivity (%) of 75%, 8.6%, 1.1% and 0.95 % at 1.8 V vs. RHE and 55.4%, 2.2%, 1.0% and 0.6% at 1.6 V vs. RHE respectively. The result indicates that formate is the main product in the electro-oxidation of glycerol on Ni/CCE using the indicated applied potentials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon-ceramic%20electrode" title="carbon-ceramic electrode">carbon-ceramic electrode</a>, <a href="https://publications.waset.org/abstracts/search?q=electrodeposition" title=" electrodeposition"> electrodeposition</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-oxidation" title=" electro-oxidation"> electro-oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=Methyltrimethoxysilane" title=" Methyltrimethoxysilane"> Methyltrimethoxysilane</a> </p> <a href="https://publications.waset.org/abstracts/141050/electro-oxidation-of-glycerol-using-nickel-deposited-carbon-ceramic-electrode-and-product-analysis-using-high-performance-liquid-chromatography" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141050.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">237</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">17437</span> Hybrid Advanced Oxidative Pretreatment of Complex Industrial Effluent for Biodegradability Enhancement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Paradkar">K. Paradkar</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20N.%20Mudliar"> S. N. Mudliar</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sharma"> A. Sharma</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20B.%20Pandit"> A. B. Pandit</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20A.%20Pandey"> R. A. Pandey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study explores the hybrid combination of Hydrodynamic Cavitation (HC) and Subcritical Wet Air Oxidation-based pretreatment of complex industrial effluent to enhance the biodegradability selectively (without major COD destruction) to facilitate subsequent enhanced downstream processing via anaerobic or aerobic biological treatment. Advanced oxidation based techniques can be less efficient as standalone options and a hybrid approach by combining Hydrodynamic Cavitation (HC), and Wet Air Oxidation (WAO) can lead to a synergistic effect since both the options are based on common free radical mechanism. The HC can be used for initial turbulence and generation of hotspots which can begin the free radical attack and this agitating mixture then can be subjected to less intense WAO since initial heat (to raise the activation energy) can be taken care by HC alone. Lab-scale venturi-based hydrodynamic cavitation and wet air oxidation reactor with biomethanated distillery wastewater (BMDWW) as a model effluent was examined for establishing the proof-of-concept. The results indicated that for a desirable biodegradability index (BOD: COD - BI) enhancement (up to 0.4), the Cavitation (standalone) pretreatment condition was: 5 bar and 88 min reaction time with a COD reduction of 36 % and BI enhancement of up to 0.27 (initial BI - 0.17). The optimum WAO condition (standalone) was: 150oC, 6 bar and 30 minutes with 31% COD reduction and 0.33 BI. The hybrid pretreatment (combined Cavitation + WAO) worked out to be 23.18 min HC (at 5 bar) followed by 30 min WAO at 150oC, 6 bar, at which around 50% COD was retained yielding a BI of 0.55. FTIR & NMR analysis of pretreated effluent indicated dissociation and/or reorientation of complex organic compounds in untreated effluent to simpler organic compounds post-pretreatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hybrid" title="hybrid">hybrid</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrodynamic%20cavitation" title=" hydrodynamic cavitation"> hydrodynamic cavitation</a>, <a href="https://publications.waset.org/abstracts/search?q=wet%20air%20oxidation" title=" wet air oxidation"> wet air oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=biodegradability%20index" title=" biodegradability index"> biodegradability index</a> </p> <a href="https://publications.waset.org/abstracts/35052/hybrid-advanced-oxidative-pretreatment-of-complex-industrial-effluent-for-biodegradability-enhancement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35052.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">618</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">17436</span> Oxidation of Lignin for Production of Chemicals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abayneh%20Getachew%20Demesa">Abayneh Getachew Demesa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Interest in renewable feedstock for the chemical industry has increased considerably over the last decades, mainly due to environmental concerns and foreseeable shortage of fossil raw materials. Lignocellulosic biomass is an abundant source of bio-based raw material that is readily available and can be utilized as an alternative source for chemical production. Lignin accrues in enormous amounts as a by-product of the pulping process in the pulp and paper industry. It is estimated that 70 million tons of lignin are annually processed worldwide from the pulp and paper industry alone. Despite its attractive chemical composition, lignin is still insufficiently exploited and mainly regarded as bio-waste. Therefore, an environmentally benign process that can completely and competitively convert lignin into different value-added chemicals is needed to launch its commercial success on industrial scale. Partial wet oxidation by molecular oxygen has received increased attention as a potential process for production of chemicals from biomass wastes. In this paper, the production of chemicals by oxidation of lignin is investigated. The factors influencing the different types of products formed during the oxidation of lignin and their yields and compositions are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass" title="biomass">biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=lignin" title=" lignin"> lignin</a>, <a href="https://publications.waset.org/abstracts/search?q=waste" title=" waste"> waste</a>, <a href="https://publications.waset.org/abstracts/search?q=chemicals" title=" chemicals"> chemicals</a> </p> <a href="https://publications.waset.org/abstracts/53289/oxidation-of-lignin-for-production-of-chemicals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53289.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">239</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">17435</span> Fenton Sludge's Catalytic Ability with Synergistic Effects During Reuse for Landfill Leachate Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Salim%20Mahtab">Mohd Salim Mahtab</a>, <a href="https://publications.waset.org/abstracts/search?q=Izharul%20Haq%20Farooqi"> Izharul Haq Farooqi</a>, <a href="https://publications.waset.org/abstracts/search?q=Anwar%20Khursheed"> Anwar Khursheed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Advanced oxidation processes (AOPs) based on Fenton are versatile options for treating complex wastewaters containing refractory compounds. However, the classical Fenton process (CFP) has limitations, such as high sludge production and reagent dosage, which limit its broad use and result in secondary contamination. As a result, long-term solutions are required for process intensification and the removal of these impediments. This study shows that Fenton sludge could serve as a catalyst in the Fe³⁺/Fe²⁺ reductive pathway, allowing non-regenerated sludge to be reused for complex wastewater treatment, such as landfill leachate treatment, even in the absence of Fenton's reagents. Experiments with and without pH adjustments in stages I and II demonstrated that an acidic pH is desirable. Humic compounds in leachate could improve the cycle of Fe³⁺/Fe²⁺ under optimal conditions, and the chemical oxygen demand (COD) removal efficiency was 22±2% and 62±2%% in stages I and II, respectively. Furthermore, excellent total suspended solids (TSS) removal (> 95%) and color removal (> 80%) were obtained in stage II. The processes underlying synergistic (oxidation/coagulation/adsorption) effects were addressed. The design of the experiment (DOE) is growing increasingly popular and has thus been implemented in the chemical, water, and environmental domains. The relevance of the statistical model for the desired response was validated using the explicitly stated optimal conditions. The operational factors, characteristics of reused sludge, toxicity analysis, cost calculation, and future research objectives were also discussed. Reusing non-regenerated Fenton sludge, according to the study's findings, can minimize hazardous solid toxic emissions and total treatment costs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20oxidation%20processes" title="advanced oxidation processes">advanced oxidation processes</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysis" title=" catalysis"> catalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=Fe%C2%B3%E2%81%BA%2FFe%C2%B2%E2%81%BA%20cycle" title=" Fe³⁺/Fe²⁺ cycle"> Fe³⁺/Fe²⁺ cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=fenton%20sludge" title=" fenton sludge"> fenton sludge</a> </p> <a href="https://publications.waset.org/abstracts/153862/fenton-sludges-catalytic-ability-with-synergistic-effects-during-reuse-for-landfill-leachate-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153862.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">89</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">17434</span> Sulfate Radicals Applied to the Elimination of Selected Pollutants in Water Matrices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Javier%20Benitez">F. Javier Benitez</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20L.%20Acero"> Juan L. Acero</a>, <a href="https://publications.waset.org/abstracts/search?q=Francisco%20J.%20Real"> Francisco J. Real</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20Rodriguez"> Elena Rodriguez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Five selected pollutants which are frequently present in waters and wastewaters have been degraded by the advanced oxidation process constituted by UV radiation activated with the additional presence of persulfate (UV/PS). These pollutants were 1H-benzotriazole (BZ), N,N-diethyl-m-toluamide or DEET (DT), chlorophene (CP), 3-methylindole (ML), and nortriptyline hydrochloride (NH).While UV radiation alone almost not degraded these substances, the addition of PS generated the very reactive and oxidizing sulfate radical SO₄⁻. The kinetic study provided the second order rate constants for the reaction between this radical and each pollutant. An increasing dose of PS led to an increase in the degradation rate, being the highest results obtained at near neutral pH. Several water matrices were tested, and the presence of bicarbonate showed different effects: a decrease in the elimination of DT, BZ, and NH; and an increase in the oxidation of CP and ML. The additional presence of humic acids (AH) decreased this degradation, because of several effects: light screening and radical scavenging. The presence of several natural substances in waters (both types, inorganic and organic matter) usually diminishes the oxidation rates of organic pollutants, but this combination UV/PS process seems to be an efficient solution for the removal of the selected contaminants when are present in contaminated waters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=water%20purification" title="water purification">water purification</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%20activated%20persulfate" title=" UV activated persulfate"> UV activated persulfate</a>, <a href="https://publications.waset.org/abstracts/search?q=kinetic%20study" title=" kinetic study"> kinetic study</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfate%20radicals" title=" sulfate radicals"> sulfate radicals</a> </p> <a href="https://publications.waset.org/abstracts/93988/sulfate-radicals-applied-to-the-elimination-of-selected-pollutants-in-water-matrices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93988.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">131</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">17433</span> Inter-Filling of CaO and MgO Mixed Layer in Surface Behavior of Al-Mg Alloys Containing Al2Ca</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seong-Ho%20Ha">Seong-Ho Ha</a>, <a href="https://publications.waset.org/abstracts/search?q=Young-Ok%20Yoon"> Young-Ok Yoon</a>, <a href="https://publications.waset.org/abstracts/search?q=Shae%20K.%20Kim"> Shae K. Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oxide layer of normal Al-Mg alloy can be characterized by upper MgO and lower MgAl2O4 spinel. The formation of the MgO outmost layer occurs by the surface segregation of Mg in the initial oxidation. After then, the oxidation is proceeded with the formation of MgA12O4 spinel beneath the MgO. Growth of the oxide layer is accelerated by constant formation of MgA12O4 spinel. On the other hand, the oxidation resistance of Al-Mg alloys can be significantly improved simply by Mg+Al2Ca master alloy use as the Mg alloying element and such an improvement is attributed to the CaO/MgO mixed layer. Al-Mg alloy containing Al2Ca shows CaO as the upper layer and MgO as the lower one without MgA12O4 spinel. Such a dense oxide film acts as a protective layer. However, the CaO/MgO scale has the outmost MgO, partly, after a long time exposure to a harsh oxidation condition. The aim of this study is to investigate the inter-filling behaviour of CaO and MgO mixed layer in oxidation resistance mechanism of Al-Mg alloys containing Al2Ca. The process of outmost MgO layer formation will be clarified. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Mg%20alloy" title="Al-Mg alloy">Al-Mg alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=Al2Ca" title=" Al2Ca"> Al2Ca</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=MgO" title=" MgO"> MgO</a> </p> <a href="https://publications.waset.org/abstracts/49097/inter-filling-of-cao-and-mgo-mixed-layer-in-surface-behavior-of-al-mg-alloys-containing-al2ca" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49097.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">283</span> </span> </div> </div> <ul class="pagination"> <li 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