Premium
P ‐Chlorophenol Wastewater Treatment by Microwave‐Enhanced Catalytic Wet Peroxide Oxidation
Author(s) -
Zhao Guohua,
Lv Baoying,
Jin Yan,
Li Dongming
Publication year - 2010
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143009x442916
Subject(s) - hydrogen peroxide , catalysis , autoclave , wastewater , chemistry , nuclear chemistry , decomposition , microwave , activated carbon , peroxide , copper , carbon fibers , inorganic chemistry , materials science , waste management , organic chemistry , composite material , composite number , physics , adsorption , quantum mechanics , engineering
A microwave‐enhanced catalytic wet peroxide oxidation (MW‐CWPO) technology was investigated to treat a high concentration of P ‐chlorophenol wastewater under a mild condition. The MW‐CWPO experiments were carried out in a microwave autoclave using copper(II) oxide (CuO)‐loaded active carbon as a catalyst. The P ‐chlorophenol was directly ring‐opened within 5 minutes at 343 K and 0.3 MPa and then mineralized to carbon dioxide and water. More than 90% of the total organic carbon was removed within 15 minutes. The reaction activation energy ( E a ) of hydrogen peroxide (H 2 O 2 ) decomposition was decreased from 47.7 to 43.1 kJ/mol under microwave irradiation. The H 2 O 2 catalytic decomposition was fitted to a second‐order reaction under microwave irradiation, while it followed a first‐order reaction without microwave irradiation. The experimental results indicate that the MW‐CWPO method has significant potential applications for a high concentration of P ‐chlorophenol wastewater.