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Catalytic oxidative degradation of 4‐chlorophenol: Effect of operating parameters and prediction of intermediates/by‐products
Author(s) -
Singh Swati,
Garg Anurag
Publication year - 2017
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12638
Subject(s) - chemistry , chemical oxygen demand , aqueous solution , catalysis , formic acid , oxalic acid , degradation (telecommunications) , decomposition , nuclear chemistry , acetic acid , hydrogen peroxide , wastewater , inorganic chemistry , organic chemistry , environmental engineering , telecommunications , computer science , engineering
The presence of chlorophenols (CP) in industrial wastewater is a major concern due to their microbial toxicity. The present study was performed to investigate the efficacy of advanced oxidation process (i.e., conventional and modified Fenton's process) for the degradation of 4‐chlorophenol (4‐CP) in an aqueous solution (concentration = 200 mg L −1 ) under varying reaction conditions. The decomposition of 4‐CP was confirmed by chemical oxygen demand (COD) reduction, total organic carbon (TOC) reduction, detection of low molecular weight carboxylic acids (such as oxalic, acetic, formic and malonic) and Cl ‐ concentration in the treated 4‐CP aqueous solution. The maximum COD and TOC reductions were 74% and 42% after 30 min of Fenton reaction at an initial pH, Fe 2+ concentration, and H 2 O 2 to Fe 2+ molar ratio of 3.0, 1.26 mM and 20, respectively which were found to increase to 79 and 55%, respectively when Cu 2+ was also added with Fe 2+ during modified Fenton process. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1734–1742, 2017