| 银纳米线复合静电纺丝膜终端饮用水处理装置电化学消毒效能研究 |
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| 引用本文： | 谭晓君,胡勇有,陈超.银纳米线复合静电纺丝膜终端饮用水处理装置电化学消毒效能研究[J].环境科学学报,2018,38(10):3964-3972. |
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| 作者姓名： | 谭晓君 胡勇有 陈超 |
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| 作者单位： | 华南理工大学土木与交通学院;华南理工大学环境与能源学院工业聚集区污染控制与生态修复教育部重点实验室 |
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| 基金项目： | 广东省联合基金（No.U1401235） |
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| 摘 要： | 终端饮用水电化学消毒装置是分散式饮用水安全的重要保障,其关键技术是过滤膜.本研究采用静电纺丝法和真空过滤沉积法制备了新型银纳米线-聚丙烯腈/热塑性聚氨酯(AgNWs-PAN/TPU)复合膜,并对复合膜的形貌、机械强度和导电性等进行了表征.同时,构建了电化学消毒装置,通过对模拟水样的过滤和电化学消毒实验,考察了复合膜长期运行的杀菌性能、膜通量、膜形貌及总银离子释放变化,评估了复合膜的消毒效果.结果表明,电纺纳米纤维膜基材具有均匀的直径和增强的机械性能.银纳米线嵌入到PAN/TPU电纺纳米纤维膜的表面构建了一个连接的导电网络,具有很好的机械性能、导电性、电化学性能及银负载稳定性.经过10 d的自来水过滤实验,AgNWs-PAN/TPU复合膜膜通量下降了4.8%,保持了99.99%的灭菌效率;经过10 d的10~5CFU·mL~(-1)大肠杆菌水样运行实验,膜通量下降了35.31%,经5 min反冲洗能够恢复98%的膜通量,可保留99%以上的细菌灭活效率.AgNWs-PAN/TPU复合膜的银负载稳定性好,总银离子释放量在30μg·L~(-1)以下的安全范围;纳米纤维膜表面在长期水力冲刷下变得粗糙,机械强度略有减弱.本研究为高导电性缓释银离子纳米银复合纤维膜杀菌材料的研发及其在终端饮用水消毒的应用提供了科学依据.
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| 关 键 词： | 饮用水处理 电化学消毒 静电纺丝 银纳米线 |
| 收稿时间： | 2018/2/21 0:00:00 |
| 修稿时间： | 2018/3/22 0:00:00 |
Electrochemical disinfection performance of a point-of-use drinking water treatment device constructed with silver nanowires composite electrospun membrane |
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| TAN Xiaojun,HU Yongyou and CHEN Chao.Electrochemical disinfection performance of a point-of-use drinking water treatment device constructed with silver nanowires composite electrospun membrane[J].Acta Scientiae Circumstantiae,2018,38(10):3964-3972. |
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| Authors: | TAN Xiaojun HU Yongyou and CHEN Chao |
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| Institution: | 1. School of Civil and Transportation, South China University of Technology, Guangzhou 510641;2. The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006,The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006 and 1. School of Civil and Transportation, South China University of Technology, Guangzhou 510641;2. The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006 |
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| Abstract: | |
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| Keywords: | drinking water treatment electrochemical disinfection electrospun silver nanowires |
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