title: Mineralization of aniline in aqueous solution by electrochemical activation of persulfate.
abstract: 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.
authors.affiliation: Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan. Electronic address: chenwen@yuntech.edu.tw.
authors.forename: Wen-Shing
authors.initials: WS
authors.lastname: Chen
authors.affiliation: Department of Chemical and Materials Engineering, National Yunlin University of Science & Technology, 123 University Road, Section 3, Douliou, Yunlin 640, Taiwan.
authors.forename: Chi-Pin
authors.initials: CP
authors.lastname: Huang
mesh_terms: D000814:Aniline Compounds / Q000032:analysis* / Q000737:chemistry; D004566:Electrodes; D004572:Electrolysis / Q000379:methods*; D006861:Hydrogen Peroxide / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013431:Sulfates / Q000737:chemistry*; D013696:Temperature; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D000814:Aniline Compounds; D006861:Hydrogen Peroxide; D009584:Nitrogen; D010100:Oxygen; D013431:Sulfates; D062065:Wastewater; D014874:Water Pollutants, Chemical; C069025:sulfate radical; C023650:aniline
keywords: Aniline; Electrolysis; Hydrogen peroxide; Persulfate; Sulfate radical