活性炭纤维阴极增强E-PS/PM体系去除水中CBZ  

E-PS/PM System for Carbamazepine Removal from Water Enhanced by Activated Carbon Fiber Cathode

作　　者：张轩 骆成杰[3] 张晨 赵纯 刘臻[2,5] ZHANG Xuan;LUO Cheng-jie;ZHANG Chen;ZHAO Chun;LIU Zhen(Chengdu Xingrong Environment Co.Ltd.,Chengdu 610011,China;Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment,Chongqing University,Chongqing 400045,China;Xinan Branch,China Urban Construction Design&Research Institute Co.Ltd.,Chengdu 610011,China;China Railway 21 Bureau Group Co.Ltd.,Urumqi 830000,China;National Centre for International Research of Low?carbon and Green Buildings,Chongqing University,Chongqing 400045,China)

机构地区：[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

出　　处：《中国给水排水》2022年第7期103-108,共6页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51308563);中央高校基本科研业务专项(2019CDXYCH0027)。

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Fe^(3+)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。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 Fe^(3+).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.

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 

分 类 号：TU992[建筑科学—市政工程]