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Regeneration of NaOH from the Spent Na2SO4 Solution by Two-Compartment Bipolar Membrane Electrodialysis
2액실 바이폴라막 전기투석에 의한 폐 Na2SO4 용액에서 NaOH 재생
Youngjae Lee, Minhyuk Seo, Jaewoo Ahn
이영재, 서민혁, 안재우
Korean J. Met. Mater. 2025;63(4):281-290.   Published online 2025 Apr 5
DOI: https://doi.org/10.3365/KJMM.2025.63.4.281

Abstract
With the recent introduction of various environmental policies focused on carbon neutrality has made recycling a crucial task in the electric vehicle industry. In particular, the recycling of lithium-ion batteries, a critical component of EVs, is becoming increasingly important. The process of recovering valuable metals such as lithium (Li), cobalt..... More

                
A Study on the Treatment of Sodium Sulfate Waste Solution by Constant Current Control Bipolar Membrane Electrodialysis
정전류 제어 방식 바이폴라막 전기투석에 의한 황산나트륨 폐액 처리에 관한 연구
Minhyuk Seo, Youngjae Lee, Yeonchul Cho, Jaewoo Ahn
서민혁, 이영재, 조연철, 안재우
Korean J. Met. Mater. 2024;62(12):944-953.   Published online 2024 Nov 29
DOI: https://doi.org/10.3365/KJMM.2024.62.12.944

Abstract
As environmental pollution has intensified, the importance of recycling spent lithium-ion batteries (LIBs) has significantly increased. Valuable metals contained in LIBs are typically recovered through processes such as leaching, precipitation, and solvent extraction. However, these recycling processes require large amounts of sulfuric acid and caustic soda, resulting in the generation..... More

                   Web of Science 1  Crossref 1
A Study on the Treatment and Recovery of Sodium Sulfate (Na2SO4) Generated When Recovering Valuable Metals (Ni, Co, Mn, Li) from Waste Lithium Ion Batteries(LIBs)
폐리튬배터리(LIBs)에서 유가금속(Ni, Co, Mn, Li) 회수 시 발생하는 황산나트륨의 처리 및 회수 연구
Yeonchul Cho, Minhyuk Seo, Youngjae Lee, Jaewoo Ahn
조연철, 서민혁, 이영재, 안재우
Korean J. Met. Mater. 2024;62(4):275-283.   Published online 2024 Mar 29
DOI: https://doi.org/10.3365/KJMM.2024.62.4.275

Abstract
Concerns have arisen regarding the high concentrations of sodium sulfate in wastewater resulting from the waste Li-ion battery wet recycling process. In addressing this issue, Bipolar electrodialysis was employed to desalinate high-concentration sodium sulfate and recover it as sulfuric acid and sodium hydroxide. The investigation encompassed various experimental variables, such..... More

                   Web of Science 2  Crossref 2
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