Du Jiaxin, Waite T David, Biesheuvel P M, Tang Wangwang
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
J Hazard Mater. 2023 Jan 15;442:130023. doi: 10.1016/j.jhazmat.2022.130023. Epub 2022 Sep 19.
With the development of our society, the desire to recover valuable metal resources from metal-containing wastewaters or natural water bodies is becoming increasingly stronger nowadays. To overcome the limitations of single techniques, coupling technologies with synergistic effects are attracting increasing attention regarding metal resource recovery from water with particular interest in electrochemical coupling technologies in view of the advantages of electrochemical methods. This state-of-the-art review comprehensively presented the mechanisms and performance of electrochemical coupling systems for metal recovery from water. To give a clear overview of current research trends, technologies coupled with electrochemical processes can be categorized into six main types: electrochemical techniques, membrane modules, adsorption/extraction techniques, sonication technologies, energy supply techniques and others. The electrochemical coupling system has shown synergistic advantages (e.g., improving metal recovery efficiency, reducing energy consumption) over single technologies. We then discuss the remaining challenges, present corresponding solutions, and put forward future directions for current electrochemical coupled systems towards metal recovery. This review is conducive to broadening the potential applications of electrochemical coupling processes for metal recovery and sustainable water treatment.
随着社会的发展，如今从含金属废水或天然水体中回收有价值金属资源的需求日益强烈。为克服单一技术的局限性，具有协同效应的耦合技术在从水中回收金属资源方面正吸引着越来越多的关注，鉴于电化学方法的优势，尤其对电化学耦合技术感兴趣。这篇前沿综述全面介绍了用于从水中回收金属的电化学耦合系统的机理和性能。为清晰概述当前的研究趋势，与电化学过程耦合的技术可分为六大类：电化学技术、膜组件、吸附/萃取技术、超声技术、能量供应技术及其他。电化学耦合系统相较于单一技术已展现出协同优势（如提高金属回收效率、降低能耗）。接着我们讨论了剩余的挑战，提出了相应的解决方案，并为当前用于金属回收的电化学耦合系统提出了未来发展方向。这篇综述有助于拓宽电化学耦合工艺在金属回收和可持续水处理方面的潜在应用。
