<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/9997532" mdate="2014-01-04 00:00:00"> <author>Mohamed Gar Alalm and Ahmed Tawfik</author> <title>Solar Photocatalytic Degradation of Phenol in Aqueous Solutions Using Titanium Dioxide</title> <pages>136 - 139</pages> <year>2014</year> <volume>8</volume> <number>2</number> <journal>International Journal of Environmental and Ecological Engineering</journal> <ee>https://publications.waset.org/pdf/9997532</ee> <url>https://publications.waset.org/vol/86</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>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 mgL. 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 pseudofirst order kinetic according to Langmuir&amp;amp;ndash;Hinshelwood model. </abstract> <index>Open Science Index 86, 2014</index> </article>