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首页> 外文期刊>Environmental Science & Technology >Electrochemical-Osmotic Process for Simultaneous Recovery of Electric Energy, Water, and Metals from Wastewater
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Electrochemical-Osmotic Process for Simultaneous Recovery of Electric Energy, Water, and Metals from Wastewater

机译：用于同时恢复电能，水和废水金属的电化学 - 渗透过程

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摘要

A highly-efficient, autonomous electrochemical-osmotic system (EOS) is developed for simultaneous recovery of electric energy, water, and metals from wastewater. We demonstrate that the system can generate a maximum electric power density of 10.5 W m~2 using a spontaneous Fe/Cu~(2+) galvanic cell, while simultaneously achieving copper recovery from wastewater. With an osmotic pressure difference generated by the deployed electrochemical reactions, water is osmotically extracted from the feed solution with the EOS at a water flux of 5.1 L m~(-2) h~(-1). A scaled-up EOS realizes a power density of 105.8 W per m~(-3) of treated water to light an LED over 24 h while also enhancing water extraction and metal recovery. The modularized EOS obtains ultrahigh (＞97.5%) Faradaic efficiencies under variable operating conditions, showing excellent system stability. The EOS is also versatile: it can recover Au, Ag, and Hg from wastewaters with simultaneous electricity and water coproduction. Our study demonstrates a promising pathway for realizing multi-resource recycling from wastewater by coupling electrochemical and osmosis-driven processes.
机译：开发了一种高效，自主电化学 - 渗透系统（EOS），用于同时回收来自废水的电能，水和金属。我们证明该系统可以使用自发的Fe / Cu〜（2+）电池产生10.5Wm〜2的最大电力密度，同时从废水中同时实现铜回收。通过由展开的电化学反应产生的渗透压差，水通过在5.1μm〜（-2）H〜（-1）的水通量的eOS中从进料溶液中渗透渗透。缩小的EOS实现了每M〜（-3）处理水105.8W的功率密度，以在24小时内照射LED，同时还增强水提取和金属回收。模块化EOS在可变操作条件下获得超高（> 97.5％）野蛮效率，显示出优异的系统稳定性。 EOS也是多功能的：它可以从带有同时电力和水共生产的废水器中恢复Au，Ag和Hg。我们的研究表明，通过耦合电化学和渗透驱动的过程来实现从废水中实现多资源回收的有希望的途径。

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  • 来源
    《Environmental Science & Technology》 |2020年第13期|8430-8442|共13页
  • 作者

    Meng Sun; Mohan Qin; Chi Wang; Guoming Weng; Mingxin Huo; Andre D. Taylor; Jiuhui Qu; Menachem Elimelech;

  • 作者单位

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States;

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States Department of Civil and Environmental Engineering University of Wisconsin-Madison Madison Wisconsin 53706 United States;

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States School of Environment Northeast Normal University Changchun 130117 China;

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States;

    School of Environment Northeast Normal University Changchun 130117 China;

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States;

    Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China;

    Department of Chemical and Environmental Engineering Yale University New Haven Connecticut 06520-8286 United States;

  • 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);
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