期刊
CHEMICAL ENGINEERING JOURNAL
卷 435, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.134857
关键词
Electrodialysis; Acidic effluent; Concentrate and Separate; Metal recovery; Ion exchange membrane
资金
- Danish Hydrocarbon Research and Technology Centre (DHRTC)
- Aarhus University Centre for Water Technology (AU-WATEC) Start-Up Fund from Grundfos Foundation
- Aarhus University Research Foundation Starting Grant [AUFF-E-2019-7-28]
- Novo Nordisk Fonden [NNF20OC0064799]
- Fundamental Research Funds for the Central Universities
- Youth Teacher International Exchange Growth Program [QNXM20210002]
Electrodialysis (ED) is a versatile technology for treating acidic effluents containing metal species. It offers continuous operation, scalability, and ease of use, addressing many drawbacks of current technologies. This critical review covers the types and state-of-the-art of ED processes, important parameters, and limitations, perspectives, and future research trends. The review also discusses common issues in ED systems and suggests potential solutions. Furthermore, it provides insights on materials development for membranes and electrodes to advance metal recovery using ED technology.
Electrodialysis (ED) is a multipurpose technology that can be used for treating acidic effluents containing metal species. Its continuous operation capacity, scalability, and easy operation can solve most of the drawbacks of current technologies, and the direct reuse of concentrated metal streams can avoid the need for chemical addition and precipitation. Hence, ED emerges as a promising technology with a huge growth potential to concentrate, separate, and selectively recover metals from acidic effluents. This critical review aims to (I) review and discuss the types of ED processes and their state-of-the-art, (II) provide an insight on the most important parameters behind the ED technology, and (III) evaluate the limitations, perspectives, and future research trends in this field. Typical problems including precipitation in the setup, waste management, and scale-up of the system are discussed and solutions are suggested. In addition, insights on materials development on both membrane and electrode are provided for further advancing the ED technology in metal recovery. We hope the review can shed light on the ED development for metal resources recovery from industrial and municipal wastewaters moving one step further towards circular water treatments.
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