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논문 기본 정보

자료유형
학술저널
저자정보
한덕현 (고등기술연구원 신소재공정센터) 정항철 (고등기술연구원 신소재공정센터) 김보람 (고등기술연구원 신소재공정센터) 김대원 (고등기술연구원연구조합)
저널정보
한국수처리학회 한국수처리학회지 한국수처리학회지 제29권 제5호
발행연도
2021.10
수록면
11 - 18 (8page)

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Recently, the demand for lithium has increased because of the rapid development in the fields of eco-friendly electric vehicles and energy storage systems, and the waste liquid generated during the lithium secondary battery manufacturing process contains approximately 5000 ppm of lithium. The lithium content of this waste liquid is approximately 20 times higher than that of seawater. The lithium present in the process waste cannot be reused immediately. It can be recycled through the water treatment process. Among the various recycling processes that are widely used currently, the electrodialysis recycling process uses the electrical energy. Therefore, it is an eco-friendly water treatment method that can perform lithium concentration and desalination of lithium waste liquid and can simultaneously treat purified water and lithium. In this study , the optimal electrodialysis conditions for the lithium-containing waste liquids generated during the lithium secondary battery manufacturing process were determined. The input variables of the electrodialysis optimal process were combined using Minitab program, and the effect of each variable and the importance of each reaction were confirmed through Minitab. The analysis results were identified as the desirability of the multi-response system. The process was optimized using a design of experiments method under three conditions: a concentration process, a desalination process, and a concentration and desalination process.

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