阴离子交换膜在酸性铬蓝K降解脱色中的应用

Degradation and Decolorization of Acid Chrome Blue K UsingSPE Anion Exchange Membrane Technique

在电解槽中 ,镀铂的阴离子交换膜将电槽分隔成为阴、阳两室。研究卤素离子 X-( X=Br、I)嵌入阴离子交换膜后阳极室中有机染料降解脱色的电化学行为。以分光光度法测试了嵌入阴离子交换膜中卤素离子对酸性铬蓝 K的降解脱色效果。实验表明 ,嵌入离子交换膜中的卤素离子 X-( X=I,Br)对酸性铬蓝 K有明显的降解脱色效果。酸性铬蓝 K被卤酸盐氧化降解的过程属一级反应 ,以 Br O-3 与 IO-3 为氧化态粒子时的反应速度常数分别等于 4.0× 1 0 -4/s与 1 .39× 1 0

Halogen anion X^-(X=I, Br) has been incorporated into an anion exchange membrane. The combing Pt-SPE and the mediator X^- system was utilized to degrade and decolorize acid chrome blue K. The electro-chemical behavior of X^- in the electrolysis cell was investigated by I-V cyclic voltammetry and steady state polarization method. The decolorization rate was determined by a visible photometer. Both of Br^- and I^- are efficient for degradation and decolorization of acid chrome blue dye. The degradation reaction is a first order reaction with k=4.0×10^(-4)/s for Br^- and 1.39×10^(-4)/s for I^-, respectively.