Degradation of carbamazepine by coupling electrolysis with persulfate oxidation in aqueous solution
Zhao Chun , Zhang Xianke , Sun Zhihua , An Ye , Duan Bowen , Deng Peng , Liu Rui , Zheng Huaili
DOI:10.11835/j.issn.1674-4764.2016.06.020
Received April 04, 2016,Revised , Accepted , Available online July 04, 2017
Volume ,2016,Pages 148-153
- Abstract
Oxidative degradation of CBZ in aqueous solution was carried out by coupling electrolysis with persulfate. Experiments were carried out under a batch-wise mode to evaluate the influence of various operation parameters on the electrolytic behavior, such as initial acidity of aqueous solution, temperature, voltage, persulfate anion concentration. After one hundred minutes reaction, the degradation rate of CBZ was 25.5%、59.3%、78.1,and the TOC removal rate was 8.25%、23.48%、26.68%, which was carried out by sole persulfate, electrolysis and coupling electrolysis with persulfate, respectively. The degradation efficiency of CBZ was effectively enhanced as temperature increased. The degradation rate of CBZ were 60.2%, 78.1%, 90.1% within one hundred minutes at 288 K, 298 K, 308 K, respectively. The degradation rate of CBZ was increased with concentration of persulfate. When the concentration of sodium persulfate reached 40 grams per liter, CBZ degradation rate was 94.7% within one hundred minutes. The degradation efficiency of CBZ as follows:pH3.0 >pH5.0 >pH7.0 and 6 V >5 V >4 V.