【摘要】 铁 -草酸盐配合物在高压汞灯 (λ =313nm)的照射下 ,可使活性艳红X3-B和活性黑K -BR染料水溶液脱色降解。染料初始浓度在 10～ 5 0mg·L-1范围 ,脱色降解过程具有一级反应动力学特征 ,脱色降解速率随染料初始浓度的增大而降低。在 2 .0～ 3.0时 ,染料的脱色降解效果最佳。铁 /草酸盐配比不同也会影响染料溶液的脱色降解速率更多还原

【Abstract】 The photodegradation 0f dye C.I. reactive red 2 and C.I. reactive black 8 can be accelerated in aqueous solutions containing Fe(Ⅲ)-oxalate complexes, under near-UV-light irradiation (λ=313nm).The photodegrada-tion of dyes solutions in initial concentration range 10～50mg·L -1 is pseudo-first order reaction, and the photodegradation rate decrease with increasing the dye concentration. Optimum pH of photodegradation of dyes solutions for C.I. reactive black 8, C.I. reactive red respectively is 3.0～4.0. The Fe(Ⅲ)/oxalate ratio have effects on the discoloration.更多还原