Formation of hydrogen peroxide and treatment of Sunset Yellow wastewater using pulsed high‐voltage discharge system
Formation of hydrogen peroxide and treatment of Sunset Yellow wastewater using pulsed high‐voltage discharge system
复制标题
DOI：
10.1002/cjce.22658
复制
发表时间：
2017-02
影响因子：
2.1
通讯作者：
Zhiyong Zhou;Yuepeng Ma;Y. Liu;Shuaijun Lu;Zhongqi Ren
中科院分区：
文献类型：
--
作者：
Zhiyong Zhou;Yuepeng Ma;Y. Liu;Shuaijun Lu;Zhongqi Ren
采用脉冲高压放电高级氧化技术处理日落黄染料废水。以去离子水为介质，研究了放电方式、初始pH值、电导率和鼓泡气体类型对H2O2生成的影响。混合串联放电模式下生成的H2O2浓度高于气液混合放电和液体放电模式下生成的H2O2浓度。pH = 1和低电导率有利于H2O2的生成。鼓泡O2能明显促进H2O2的产生。在此基础上，研究了放电方式、初始pH值和鼓泡气体种类对日落黄降解的影响。实验结果与机理实验相一致。在放电过程中引入Fe 2+，发生了芬顿反应，对日落黄的降解有明显的促进作用。初始pH和Fe2+浓度对日落黄降解的影响符合二级动力学。铜网电极对日落黄的降解效率明显高于针电极。提出了一种可行的日落黄废水处理方法。本文受版权保护。版权所有
Pulsed high-voltage discharge, one of the advanced oxidation processes, was used for the treatment of Sunset Yellow wastewater. The effects of discharge type, initial pH, conductivity and bubbling gas type on the formation of H2O2 were investigated in the mechanism experiments using deionized water. The concentration of H2O2 formed in hybrid series discharge mode was higher than that formed in hybrid gas-liquid discharge and liquid discharge modes. Moreover, pH of 1 and low conductivity were beneficial to the formation of H2O2. Bubbling O2 could obviously enhance the generation of H2O2. Afterwards, the effects of discharge type, initial pH and bubbling gas type were also studied in the degradation experiments of Sunset Yellow. The experiment results were consistent with the mechanism experiments. Fenton reaction happened by the introduction of Fe2+ into the discharge process, which obviously enhanced the degradation of Sunset Yellow. Besides, the effects of initial pH and Fe2+ concentration on the Sunset Yellow degradation followed the second-order-kinetics. Moreover, the degradation efficiency of Sunset Yellow with copper mesh as electrode was much higher than that with needle electrode. This article proposed a feasible approach to deal with Sunset Yellow wastewater. This article is protected by copyright. All rights reserved