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Catalytic wet oxidations of phenol‐ and p ‐chlorophenol‐contaminated waters
Author(s) -
Chang Chiehmign J.,
Li ShiowShya,
Ko ChingMing
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280640306
Subject(s) - phenol , chemistry , phenols , catalysis , liquid phase , chlorophenol , nuclear chemistry , inorganic chemistry , reaction rate constant , oxygen , activation energy , catalytic oxidation , organic chemistry , kinetics , physics , quantum mechanics , thermodynamics
The rate constant and activation energy of liquid‐phase oxidation catalyzed by CuSO 4 · 5h 2 O, and Co 2 O 3 , were found for synthesized wastewaters containing 1000 mg dm −3 phenol and 1500 dm −3 p ‐chlorophenol, respectively. Among the catalysts, CuSO 4 · 5H 2 O was demonstrated to be the most effective in reducing the concentration of phenols in wastewaters. The effects of oxygen flow rates and temperatures on the oxidation efficiency were also discussed. The analysis of total organic carbon on the end products after oxidations showed that the liquid phase contained only 10% of intermediate products. Oxidation at different pH values suggested that phenols could be favourably destroyed in an alkaline medium.