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논문 기본 정보

자료유형
학술저널
저자정보
Hongsik Yoon (Korea Institute of Machinery & Materials) SeongBeom Jeon (Korea Institute of Machinery & Materials) Taijin Min (Korea Institute of Machinery & Materials) Seonghwan Kim (Korea Institute of Machinery & Materials) Joonwoo Park (ER) Areum Kim (Korea Institute of Machinery & Materials) Sungil Lim (Korea Institute of Machinery & Materials) Kyungha Ryu (Korea Institute of Machinery & Materials)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제30권 제1호
발행연도
2025.2
수록면
105 - 114 (10page)

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초록· 키워드

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Lithium carbonate (Li₂CO₃) is becoming increasingly valuable with the growth of the lithium-ion battery industry. For effective Li₂CO₃ production, the efficient supply of the carbonate source to the solution is crucial. Conventionally, sodium carbonate has been used as the carbonate source; however, the importance of CO₂ utilization has been recently recognized. Conventional CO₂-based carbonate sourcing exhibits limited efficiency. In this study, we propose a CO₂ microbubbling system based on a rotating nozzle for Li₂CO₃ precipitation. The CO₂ micro-bubbling system demonstrated a 1.6 to 1.9 times greater precipitation reaction rate than that of the conventional CO₂ bubbling system. This rate enhancement could be attributed to the increased gas-liquid contact surface and greater residence time due to the generation of CO₂ microbubbles. Additionally, the Li₂CO₃ reaction terminated when the pH of the solution dropped below 9.4–9.7 approximately. The re-dissolution of precipitated Li₂CO₃ occurred below this pH range as bicarbonate ions became the dominant species over carbonate ions. This study successfully demonstrated that CO₂ microbubbling technology could be an excellent alternative for carbonate sourcing systems in the Li₂CO₃ production industry.

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ABSTRACT
1. Introduc
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References

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