| 过滤式碳纤维电极消毒效果比较与机理研究 |
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| 引用本文： | 辛蕾,霍正洋,倪欣业,熊德琪,胡洪营.过滤式碳纤维电极消毒效果比较与机理研究[J].环境科学学报,2018,38(3):940-946. |
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| 作者姓名： | 辛蕾 霍正洋 倪欣业 熊德琪 胡洪营 |
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| 作者单位： | 大连海事大学, 环境科学与工程学院, 大连 116026;清华大学, 环境学院 环境模拟与污染控制国家重点联合实验室 国家环境保护环境微生物利用与安全控制重点实验室, 北京 100084,清华大学, 环境学院 环境模拟与污染控制国家重点联合实验室 国家环境保护环境微生物利用与安全控制重点实验室, 北京 100084,清华大学, 环境学院 环境模拟与污染控制国家重点联合实验室 国家环境保护环境微生物利用与安全控制重点实验室, 北京 100084,大连海事大学, 环境科学与工程学院, 大连 116026,清华大学, 环境学院 环境模拟与污染控制国家重点联合实验室 国家环境保护环境微生物利用与安全控制重点实验室, 北京 100084;清华-伯克利深圳学院, 环境与新能源技术工程实验室, 深圳 518055 |
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| 基金项目： | 科技部国际合作项目（No.2016YFE0118800） |
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| 摘 要： | 过滤式电极消毒作为一种安全、高效的新型消毒技术备受关注,然而目前使用的电极材料比较单一,且稳定性和高效性难以兼备,制约了该技术的设备化发展.本文采用过滤式消毒方式,考察了几种高孔隙率的导电碳纤维毡的消毒效果.结果表明,碳纤维毡电极具有优异的消毒能力,活性碳纤维电极可在几伏的电压下使细菌死亡,与传统电化学消毒相比,电压降低了1~2个数量级.其中A-PCF(聚丙烯腈基活性碳纤维)电极在外接电压2 V,水力停留时间2 s时即可对大肠杆菌菌液实现6.5log的去除.当外接电压≤2 V时,流出物中未检测到氯,pH保持不变,排除了电化学产物的影响.A-PCF可作为过滤式电极消毒的优选电极材料.
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| 关 键 词： | 水消毒 多孔电极 活性碳纤维 纳米结构 微电场 |
| 收稿时间： | 2017/7/27 0:00:00 |
| 修稿时间： | 2017/8/23 0:00:00 |
Comparison of the effect and the analysis of mechanism on electrochemical filtration disinfection technologies using carbon fiber as electrode |
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| XIN Lei,HUO Zhengyang,NI Xinye,XIONG Deqi and HU Hongying.Comparison of the effect and the analysis of mechanism on electrochemical filtration disinfection technologies using carbon fiber as electrode[J].Acta Scientiae Circumstantiae,2018,38(3):940-946. |
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| Authors: | XIN Lei HUO Zhengyang NI Xinye XIONG Deqi and HU Hongying |
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| Institution: | School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026;Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC), School of Environment, Tsinghua University, Beijing 100084,Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC), School of Environment, Tsinghua University, Beijing 100084,Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC), School of Environment, Tsinghua University, Beijing 100084,School of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026 and Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC), School of Environment, Tsinghua University, Beijing 100084;Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055 |
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| Abstract: | As a newly developed disinfection technology, conductive filters electrodes disinfection has attracted much attention due to its advantages of safe operation and high efficiency. However, only few electrode materials were investigated for electrochemical disinfection, and the low stability or efficiency limited their equalization potentials. In this study, the disinfection effects of four carbon filters felts with high porosity were investigated. The A-PCF (polyacryloitrile-based activated carbon fiber) electrode achieved > 6.5log removal of E.coil bacteria at a total cell potential of 2 V and a hydraulic residence time of 2 s. At the total cell potential below 2 V, chlorine in the effluent was undetectable, and solution pH was independent, the impact of electrochemical products could be excluded. Among the four carbon fibers felts, A-PCF showed the best performance and can be used as a preferred electrode material for electrochemical filtration. |
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| Keywords: | water disinfection porous electrode activated carbon fiber nanostructure micro electric field |
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