Affiliations: Department of Environmental Science and Engineering,
College of Chemical Engineering, Zhejiang University, Hangzhou 310027,China.
E-mail [email protected] mail. hz. zj. cn
Note:  Corresponding author
Abstract: An extensive series of experiments was carried out in order to
identify suitable catalysts to boost the reaction rate of wet air oxidation of
real textile wastewaters at relatively mild temperature and pressure.
Experimental results indicated that all catalysts tested in this investigation
had shown an impressive increase in the initial COD and TOC removal rate as
well as the COD and TOC removal levels in two hours reaction. Among all the
catalysts tested, copper salts were more effective than the rest. Anions of the
salt soluffonsalso played a role in the catalytic process with nitrate ions
having better effect than sulfate ions. Hence copper nitrates were more
effective than copper sulfates. It was also found that a mixture of salts with
different metals performed better than either of the component single salt
Keywords: textile wastewater, wet air oxidation, catalysis