ZHANGXuan,LUOCheng-jie,ZHANGChen,et al.E-PS/PM System for Carbamazepine Removal from Water Enhanced by Activated Carbon Fiber Cathode[J].China Water & Wastewater,2022,38(7):103-108.
E-PS/PM System for Carbamazepine Removal from Water Enhanced by Activated Carbon Fiber Cathode
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第7期
Page:
103-108
Column:
Date of publication:
2022-04-01
- Keywords:
- activated carbon fiber cathode; advanced oxidation process; persulfate; carbamazepine(CBZ); spectroscopic analysis
- Abstract:
- Performances of electrolysis-persulfate-activated carbon fiber (E-PS-ACF) and electrolysis-permanganate-activated carbon fiber (E-PM-ACF) systems for degradation of carbamazepine (CBZ) in water were investigated, and the physicochemical properties of ACF before and after reaction were analyzed by Raman spectrometer, FTIR and XPS. The degradation of CBZ in PS-ACF and PM-ACF systems was significantly enhanced by applying cathode electric field. The degradation capacity of E-PS-ACF system was improved after the introduction of Fe3+.However, CBZ was decomposed into small molecular organic matters, and the performance of further treatment was not good. Compared with E-PS-ACF, E-PM-ACF system had a better CBZ degradation performance. Small molecular organics dissolved in water were first formed during the reaction. And the small molecular organics in water were completely removed within 5 min.When there was no applied cathodic electric field in the PS and PM systems, ACF participated in the reaction and its surface damage was serious. On the contrary,the reaction was significantly improved when a cathodic electric field was applied, and the ACF cathode remained stable. The main reason for better degradation performance of E-PM-ACF system was that Mn(Ⅶ) accepted electrons at the cathode, and the generated Mn(Ⅲ) and Mn(Ⅳ) removed CBZ from water rapidly and efficiently.
Last Update:
2022-04-01