Fe salts as catalyst for the wet oxidation of o-chlorophenol.
- Author:
Xin-hua XU
1
;
Ping HE
;
Jian JIN
;
Zhi-wei HAO
Author Information
1. Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China. xhxu@hzcnc.com
- Publication Type:Journal Article
- MeSH:
Catalysis;
Chlorophenols;
analysis;
chemistry;
isolation & purification;
Industrial Waste;
prevention & control;
Iron;
chemistry;
Kinetics;
Models, Chemical;
Oxidation-Reduction;
Salts;
chemistry;
Solutions;
Temperature;
Water Purification;
methods
- From:
Journal of Zhejiang University. Science. B
2005;6(6):569-573
- CountryChina
- Language:English
-
Abstract:
Catalytic wet air oxidation (CWAO) of o-chlorophenol in wastewater was studied in a stainless steel autoclave using four different Fe catalysts in the temperature range of 100-200 degrees C. Experimental results showed that high rate of o-chlorophenol and COD(Cr) (Chemical Oxygen Demand, mg/L) removal by CWAO was obtained at relatively low temperature and pressure. The catalysts Fe2(SO4)3, FeSO4, Fe2O3 and FeCl3 all exhibited high catalytic activity. More than 93.7% of the initial COD(Cr) and nearly 100% of o-chlorophenol were removed at 150 degrees C after 150 min with FeSO4 as catalyst. The CWAO of o-chlorophenol was found to be pseudo-first order reaction with respect to o-chlorophenol, with activation energy of 75.56 kJ/mol in the temperature range of 100-175 degrees C.
