期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.2c05042
关键词
water purification; selective separations; electrokinetics; ion exchange; heavy metals
资金
- US Department of Energy, Office of Science, Office of Basic Energy Sciences Separation Science program [DE-SC0022304]
- U.S. Department of Energy (DOE) [DE-SC0022304] Funding Source: U.S. Department of Energy (DOE)
Shock ion extraction (Shock IX) is a new water purification method that selectively and chemically-free removes toxic heavy metals by combining shock electrodialysis (Shock ED) and ion exchange. It exhibits greater ion removal and selectivity compared to the use of ion exchange alone.
Electrochemical methods are known to have attractive features and capabilities when used for ion separations and water purification. In this study, we developed a new process called shock ion extraction (shock IX) for selective and chemical-free removal of toxic heavy metals from water. Shock IX is a hybrid process that combines shock electrodialysis (shock ED) and ion exchange using an ion exchange resin wafer (IERW), and this method can be thought of functionally as an electrochemically assisted variation of traditional ion exchange. In particular, shock IX exhibits greater ion removal and selectivity for longer periods of time, compared to the use of ion exchange alone. The use of an IERW in shock ED also increases multivalent ion selectivity, reduces energy consumption, and improves the hydrodynamics and scalability of the system.
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