亮蓝与日落黄染料的水中电晕放电脱色比较

Comparative Study on Decolorization of Brilliant Blue and Sunset Yellow Dyes by Underwater Electrical Corona Discharge

利用一种能够产生大体积水下脉冲电晕放电的同轴棒-筒电极结构对亮蓝及日落黄染料溶液进行脱色降解,从耗时及耗能角度对脱色效果进行对比。实验发现溶液电导率增加对两种染料脱色速率影响都不大,但能耗增加,相同电导率下日落黄脱色速率大于亮蓝,而能耗低于亮蓝。pH值升高时两种染料脱色速率都减慢且能耗增加,酸性条件下日落黄脱色速率大于亮蓝、能耗低于亮蓝。

Brilliant Blue and Sunset Yellow dyes were decolorized by a large volume underwater electrical corona discharge reactor.Effect of the conductivity and pH of the solution on the decolorization rate and energy consumption were investigated.It was found that the solution conductivity had little effect on decolorization rate,but energy consumption increased with increasing the solution conductivity.Decolorization rate constant for the Sunset Yellow solution was higher and energy consumption was lower than that for the Brilliant Blue at the same conductivity.The decolorization rate constant for both dyes decreased and energy consumption for both dyes increased with increasing pH value.The decolorization rate constant for the Sunset Yellow solution was higher and energy consumption was lower than that for the Brilliant Blue at the acid solution.