氯
电解
电化学
流出物
污染物
化学
试剂
降级(电信)
水处理
制浆造纸工业
电极
环境化学
环境工程
环境科学
电解质
计算机科学
有机化学
电信
物理化学
工程类
作者
Raíssa Quaiatti Antonelli,Karla Santos de Araújo,Ricardo Francisco Pires,Ana Luiza de Toledo Fornazari,Ana Cláudia Granato,Geoffroy Roger Pointer Malpass
标识
DOI:10.1080/09593330.2017.1392617
摘要
The present paper presents the study of (1) the optimization of electrochemical-free chlorine production using an experimental design approach, and (2) the application of the optimum conditions obtained for the application in photo-assisted electrochemical degradation of simulated textile effluent. In the experimental design the influence of inter-electrode gap, pH, NaCl concentration and current was considered. It was observed that the four variables studied are significant for the process, with NaCl concentration and current being the most significant variables for free chlorine production. The maximum free chlorine production was obtained at a current of 2.33 A and NaCl concentrations in 0.96 mol dm−3. The application of the optimized conditions with simultaneous UV irradiation resulted in up to 83.1% Total Organic Carbon removal and 100% of colour removal over 180 min of electrolysis. The results indicate that a systematic (statistical) approach to the electrochemical treatment of pollutants can save time and reagents.
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