通过电化学还原与氧化相结合进行脱氯
Dechlorination by combined electrochemical reduction and oxidation.
作者信息
Cong Yan-qing, Wu Zu-cheng, Tan Tian-en
机构信息
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China.
出版信息
J Zhejiang Univ Sci B. 2005 Jun;6(6):563-8. doi: 10.1631/jzus.2005.B0563.
Chlorophenols are typical priority pollutants listed by USEPA (U.S. Environmental Protection Agency). The removal of chlorophenol could be carried out by a combination of electrochemical reduction and oxidation method. Results showed that it was feasible to degrade contaminants containing chlorine atoms by electrochemical reduction to form phenol, which was further degraded on the anode by electrochemical oxidation. Chlorophenol removal rate was more than 90% by the combined electrochemical reduction and oxidation at current of 6 mA and pH 6. The hydrogen atom is a powerful reducing agent that reductively dechlorinates chlorophenols. The instantaneous current efficiency was calculated and the results indicated that cathodic reduction was the main contributor to the degradation of chlorophenol.
氯酚是美国环境保护局（USEPA）列出的典型优先污染物。氯酚的去除可通过电化学还原和氧化方法相结合来实现。结果表明，通过电化学还原将含氯原子的污染物降解形成苯酚，然后在阳极通过电化学氧化进一步降解是可行的。在电流为6 mA和pH值为6的条件下，通过电化学还原和氧化相结合，氯酚去除率超过90%。氢原子是一种强大的还原剂，可使氯酚发生脱氯反应。计算了瞬时电流效率，结果表明阴极还原是氯酚降解的主要贡献因素。
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