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The H 2 O 2 /pyridine/Cu(II) advanced oxidation system was used to assess the efficiency of the treatment of a 1gL −1 Terasil Red R dye solution. This system was found to be capable in reducing the concentration of chemical oxygen demand (COD) of the dye solution up to 90%, and achieving 99% in decolorization at the optimal concentration of 5.5mM H 2 O 2 , 38mM...
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