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http://dx.doi.org/10.7464/ksct.2021.27.1.33

Correlation between Lithium Concentration and Ecotoxicoloigy in Lithium Contained Waste Water  

Jin, Yun-Ho (Institute for Advanced Engineering)
Kim, Bo-Ram (Institute for Advanced Engineering)
Kim, Dae-Weon (Institute for Advanced Engineering)
Publication Information
Clean Technology / v.27, no.1, 2021 , pp. 33-38 More about this Journal
Abstract
Demand for lithium-based secondary batteries is greatly increasing with the explosive growth of related industries, such as mobile devices and electric vehicles. In Korea, there are several top-rated global lithium-ion battery manufacturers accounting for 40% of the global secondary battery business. Most discarded lithium secondary batteries are recycled as scrap to recover valuable metals, such as Nickel and Cobalt, but residual wastes are disposed of according to the residual lithium-ion concentration. Furthermore, there has not been an attempt on the possibility of water discharge system contamination due to the concentration of lithium ions, and the effluent water quality standards of public sewage treatment facilities are becoming stricter year after year. In this study, the as-received waste water generated from the cathode electrode coating process in the manufacturing of high-nickel-based NCM cathode material used for high-performance and long-term purposes was analyzed. We suggested a facile recycling process chart for waste water treatment. We revealed a correlation between lithium-ion concentration and pH effect according to the proposed waste water of each recycling process through analyzing standard water quality tests and daphnia ecological toxicity. We proposed a realistic waste water treatment plan for lithium electrode manufacturing plants via comparison with other industries' ecotoxicology.
Keywords
Lithium; Waste water; Ecotoxicology; Secondary batteries;
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Times Cited By KSCI : 1  (Citation Analysis)
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