Degradative Oxidation of 2,4,6 Trichlorophenol Using Advanced Oxidation Processes - A Comparative Study

作者：Saritha P; Raj D Samuel Suman; Aparna C; Laxmi P Nalini Vijaya; Himabindu V^*; Anjaneyulu Y

来源：Water, Air, and Soil Pollution, 2009, 200(1-4): 169-179.

DOI：10.1007/s11270-008-9901-y

• Advanced oxidation processes
• Compound reduction
• Comparative assessment
• Dechlorination
• Mineralization
• Optimization
• Recalcitrant
• Remediation
• Substitution
• Trichlorophenol

In the present study, a comparative assessment of 2,4,6-T (2,4,6-Trichlorophenol) degradation by different AOPs (Advanced Oxidation Processes - UV, UV/H(2)O(2), Fenton, UV/Fenton and UV/TiO(2)) in the laboratory scale is performed. The effects of different reactant concentrations and pH are assessed. 2,4,6-T removal, Total Organic Carbon mineralization (TOC) and dechlorination are monitored. Of all the AOPs, UV/Fenton process is more effective in degrading 2,4,6-T. The optimum conditions obtained for the best degradation with UV/Fenton are: pH=3, Fe(+2) concentration of about 5 ppm, and peroxide concentration of 100 ppm for an initial 100 ppm of 2,4,6 T concentration at room temperature. In these conditions, a pseudo first-order rate constant is evaluated. The degradation rate of 2,4,6 T followed the order: UV/Feton > UV/TiO(2) > UV/H(2)O(2) > Feton > UV

• 出版日期2009-6