Photocatalytic degradation of dyestuff wastewater with supported iron-tetrasulfophthalocyanine

Iron-tetrasulfophthalocyanine as homogeneous photocatalyst was difficult to separate and couldn′t be reused.A supported catalyst was obtained by reaction between modified cotton fiber and iron-tetrasulfophthalocyanine.Upon visible light irradiation in the presence of H_2O_2,this catalyst was found to be highly effective for the degradation of nonbiodegradable active red.The effects of concent of catalyst,pH value and lamp-house on the catalytic oxidation were investigated.The experiments indicated that active red in aqueous solution was decolored near 100% with COD removal rate of 67%,when the fiber dosage(1.0 g/L),the H_2O_2 dosage(0.19 mol/L),pH=(4.93),irradiated by simulant visible light.The catalyst was recyclable and it wound not cause any secondary pollution.