...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Electrically Tuning Ultrafiltration Behavior for Efficient Water Purification
【24h】

Electrically Tuning Ultrafiltration Behavior for Efficient Water Purification

机译：电动调整超滤行为，以获得高效的水净化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Conventional ultrafiltration (UF) technology suffers from membrane fouling and limited separation performance. This work demonstrates a novel electrical tuning strategy to improve the separation efficiency of the UF process. An electrically enhanced UF (EUF) system with two sets of oppositely placed membrane-electrode modules was set up. A series of multicycle treatment experiments were conducted to reveal the performance and tuning mechanism of the EUF system. The applied electrical tuning operation brought about an up to 68% reduction of average transmembrane pressure increasing rate (Rp), indicating a strong capability in inhibiting membrane fouling. This fouling reduction can be mainly ascribed to the applied electrophoretic force, changes in solution chemistry, and generation of peroxide, which repulses foulants away from the membrane, hampers foulant adsorption owing to enhanced electrostatic repulsion, and degrades foulants, respectively. The 1.2 V voltage was identified as an effective voltage for stably inhibiting membrane fouling. Besides, the electrical tuning operation led to an up to ～32% increase in foulant retention rate (Φ) owing to both non-Faradaic effects (including electrosorption and electrophoretic repulsion) and Faradaic oxidative degradation. Moreover, the electrical tuning operation allowed a remarkable desalination capability with a significantly higher desalination rate and an up to ～43% greater salt adsorption capacity as compared with a conventional capacitive deionization process. Additionally, the EUF system achieved a good performance in removing heavy metals (Ag, Cu, Pb, Se, and Sb). The overall enhanced EUF performance suggests promising prospects for practical applications.
机译：传统的超滤（UF）技术遭受膜污垢和有限的分离性能。这项工作展示了一种新颖的电气调整策略，以提高UF过程的分离效率。建立了具有两组相对放置膜电极模块的电增强UF（EUF）系统。进行了一系列多运行治疗实验，以揭示EUF系统的性能和调整机制。所施加的电动调谐操作降低了平均跨膜压力增加率（RP）的高达68％，表明抑制膜污染的强能力。这种污垢减少可以主要归因于所施加的电泳力，溶液化学的变化以及产生污垢远离膜的污垢的产生，由于增强的静电排斥，并降低了污垢的吸附。将1.2V电压识别为稳定抑制膜污染的有效电压。此外，由于非法拉迪亚效应（包括吸油和电泳排斥）和游览氧化降解，电学调谐操作导致污垢保留率（φ）增加到高达〜32％。此外，与传统的电容去离子过程相比，电学调谐操作允许具有显着较高的脱盐能力，脱盐速率显着较高，盐吸附容量的较高〜43％。另外，EUF系统在除去重金属（Ag，Cu，Pb，Se和Sb）中实现了良好的性能。整体增强的EUF绩效表明了实际应用前景前景。

著录项

  • 来源
    《Environmental Science & Technology》 |2020年第18期|11536-11545|共10页
  • 作者

    Min Li; Kuichang Zuo; Shuai Liang; Kang Xiao; Peng Liang; Xiaomao Wang; Xia Huang;

  • 作者单位

    Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 P. R. China;

    Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 P. R. China;

    Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 P. R.;

    College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049 P. R China;

    State Key joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 P. R. China;

    State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 P. R. China;

    State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 P. R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号