TY - JFULL AU - Mohamed Gar Alalm and Ahmed Tawfik PY - 2014/3/ TI - Solar Photocatalytic Degradation of Phenol in Aqueous Solutions Using Titanium Dioxide T2 - International Journal of Environmental and Ecological Engineering SP - 135 EP - 139 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/9997532 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 86, 2014 N2 - In this study, photocatalytic degradation of phenol by  titanium dioxide (TiO2) in aqueous solution was evaluated. The UV  energy of solar light was utilized by compound parabolic collectors  (CPCs) technology. The effect of irradiation time, initial pH, and  dosage of TiO2 were investigated. Aromatic intermediates (catechol,  benzoquinone, and hydroquinone) were quantified during the reaction  to study the pathways of the oxidation process. 94.5% degradation  efficiency of phenol was achieved after 150 minutes of irradiation  when the initial concentration was 100 mg/L. The dosage of TiO2  significantly affected the degradation efficiency of phenol. The  observed optimum pH for the reaction was 5.2. Phenol photocatalytic  degradation fitted to the pseudo-first order kinetic according to  Langmuir–Hinshelwood model.   ER -