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Overview of recent developments of resource recovery from wastewater via electrochemistry-based technologies
Science of the Total Environment ( IF 9.8 ) Pub Date : 2020-12-03 , DOI: 10.1016/j.scitotenv.2020.143901
Yuan Liu , Ying-Ying Deng , Qi Zhang , Hong Liu

As the rapid increase of the worldwide population, recovering valuable resources from wastewater have attracted more and more attention by governments and academia. Electrochemical technologies have been extensively investigated over the past three decades to purify wastewater. However, the application of these technologies for resource recovery from wastewater has just attracted limited attention. In this review, the recent (2010−2020) electrochemical technologies for resource recovery from wastewater are summarized and discussed for the first time. Fundamentals of typical electrochemical technologies are firstly summarized and analyzed, followed by the specific examples of electrochemical resource recovery technologies for different purposes. Based on the fundamentals of electrochemical reactions and without the addition of chemical agents, metallic ions, nutrients, sulfur, hydrogen and chemical compounds can be effectively recovered by means of electrochemical reduction, electrochemical induced precipitation, electrochemical stripping, electrochemical oxidation and membrane-based electrochemical processes, etc. Pros and cons of each electrochemical technology in practical applications are discussed and analyzed. Single-step electrochemical process seems ineffectively to recover valuable resources from the wastewater with complicated constituents. Multiple-step processes or integrated with biological and membrane-based technologies are essential to improve the performance and purity of products. Consequently, this review attempts to offer in-depth insights into the developments of next-generation of electrochemical technologies to minimize energy consumption, boost recovery efficiency and realize the commercial application.



中文翻译:

通过基于电化学的技术从废水中回收资源的最新进展概述

随着世界人口的快速增长,从废水中回收宝贵资源引起了政府和学术界的越来越多的关注。在过去的三十年中,对电化学技术进行了广泛的研究以净化废水。然而,将这些技术用于废水资源回收的应用仅受到了有限的关注。在这篇综述中,首次总结并讨论了最近(2010-2020年)从废水中回收资源的电化学技术。首先总结和分析了典型电化学技术的基础知识,然后是针对不同目的的电化学资源回收技术的具体示例。基于电化学反应的基本原理,并且不添加化学试剂,金属离子,养分,硫,氢和化合物可以通过电化学还原,电化学诱导的沉淀,电化学汽提,电化学氧化和基于膜的电化学过程等有效回收。每种电化学技术在实际应用中的利弊是讨论和分析。单步电化学过程似乎无法有效地从具有复杂成分的废水中回收有价值的资源。多步过程或与生物和膜技术集成的过程对于提高产品的性能和纯度至关重要。因此,本综述试图对下一代电化学技术的发展提供深入的见解,以最大程度地减少能耗,

更新日期:2020-12-10
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