Mineralization of aniline in aqueous solution by electrochemical activation of persulfate

被引：157
作者：
Chen, Wen-Shing [1 ]
Huang, Chi-Pin [1 ]
机构：
[1] Natl Yunlin Univ Sci & Technol, Dept Chem & Mat Engn, Yunlin 640, Taiwan
来源：
CHEMOSPHERE | 2015年 / 125卷
关键词：
Aniline; Electrolysis; Persulfate; Sulfate radical; Hydrogen peroxide; BORON-DOPED DIAMOND; INDUSTRIAL WASTE-WATER; ELECTRO-FENTON; OXIDATION; DEGRADATION; KINETICS; MECHANISM; NITROTOLUENES; DECOMPOSITION; ULTRASOUND;
D O I：
10.1016/j.chemosphere.2014.12.053
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Oxidative degradation of aniline in aqueous solution was carried out by coupling electrolysis with persulfate oxidation, in which a synergistic effect occurred. Experiments were performed under a batch-wise mode to evaluate the influence of various operation parameters on the electrolytic behavior, such as acidity of aqueous solution, temperature, electrode potential, persulfate anion concentration and nitrogen/oxygen gas dosage. The aniline pollutants could be almost entirely mineralized by means of electro-activated persulfate oxidation, wherein sulfate radicals were presumed to be principal oxidizing agents. Besides, electrogenerated hydrogen peroxide originated from cathodic reduction of oxygen, supplied chiefly by anodic oxidation of water, would contribute partially for decomposition of aniline. On the whole, the electro-activated persulfate process is a very promising method for treatment of aniline in wastewater. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：175 / 181
页数：7
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