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活性炭纤维阴极增强E-PS/PM体系去除水中CBZ

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第7期 页码: 103-108 栏目: 出版日期: 2022-04-01
Title:
E-PS/PM System for Carbamazepine Removal from Water Enhanced by Activated Carbon Fiber Cathode
作者:
张轩1,2， 骆成杰3， 张晨4， 赵纯2,5， 刘臻2,5
（1.成都市兴蓉环境股份有限公司，四川 成都 610011；2.重庆大学 三峡库区生态环境教育部重点实验室，重庆 400045；3.中国城市建设研究院有限公司 西南分院，四川 成都 610011；4.中铁二十一局集团第一工程有限公司，新疆 乌鲁木齐 830000；5.重庆大学 低碳绿色建筑国际联合研究中心，重庆 400045）
Author(s):
ZHANG　Xuan1，2， LUO　Cheng-jie3， ZHANG　Chen4， ZHAO　Chun2，5， LIU　Zhen2，5
（1. Chengdu Xingrong Environment Co. Ltd.， Chengdu 610011， China； 2. Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment ， Chongqing University，Chongqing 400045，China； 3. Xinan Branch，China Urban Construction Design ＆ Research Institute Co. Ltd.， Chengdu 610011， China； 4. China Railway 21 Bureau Group Co. Ltd.， Urumqi 830000， China； 5. National Centre for International Research of Low?carbon and Green Buildings， Chongqing University， Chongqing 400045， China）
关键词:
活性炭纤维阴极;  高级氧化;  过硫酸盐;  卡马西平;  光谱学分析
Keywords:
activated carbon fiber cathode;  advanced oxidation process;  persulfate; carbamazepine(CBZ);  spectroscopic analysis
摘要:
探究了电-活性炭纤维-过硫酸盐体系（E-PS-ACF）及电-活性炭纤维-高锰酸盐体系（E-PM-ACF）对水体中卡马西平（CBZ）的降解效果，基于拉曼光谱仪、FTIR及XPS分析了反应前后活性炭纤维（ACF）的理化特性。结果表明，施加阴极电场使PS-ACF及PM-ACF体系降解CBZ的效果显著增强，E-PS-ACF体系引入Fe3+后降解能力提升，但均是将CBZ分解为小分子有机物，进一步处理效果不佳。与E-PS-ACF相比，E-PM-ACF体系对CBZ的降解效果更优，反应过程中CBZ先被降解成溶于水的小分子有机物，5 min后小分子有机物被进一步去除。不对PS及PM体系施加阴极电场时ACF参与反应，其表面被严重破坏；而在阴极电场条件下反应效果显著提高，ACF阴极特性稳定。E-PM-ACF体系降解CBZ效果较好的主要原因是Mn（Ⅶ）在阴极获得电子，产生的Mn（Ⅲ）、Mn（Ⅳ）可快速、高效地去除水体中的CBZ。
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.

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更新日期/Last Update: 2022-04-01