https://scholars.lib.ntu.edu.tw/handle/123456789/409499
標題: | Recovery of metal ions from spent Lithium Ion Batteries (LIBs) using sodium salts of D2EHPA or P507: Performance evaluation and life cycle assessment | 作者: | Hung S.-H. Lin C.-F. Chiang P.-C. Tsai T.-H. Peng C.-Y. |
關鍵字: | D2EHPA; Life cycle assessment; P507; Solvent extraction; Spent lithium ion batteries (LIBs) | 公開日期: | 2014 | 出版社: | International Congress of Chemistry and Environment | 卷: | 18 | 期: | 8 | 起(迄)頁: | 39-47 | 來源出版物: | Research Journal of Chemistry and Environment | 摘要: | In this study, solvent extraction of Li, Co, Mn and Ni from spent Lithium Ion Batteries (LIBs) was carried out using sodium - di (2-ethylhexyl) phosphoric acid (Na-D2EHPA) and mono-2-ethylhexyl ester (Na-P507) dissolved in kerosene. Both the D2EHPA and P507 extractants were saponified by NaOH solution before it was used and the kerosene was used as the diluent. The concentrations of Li, Co, Mn and Ni ions were measured with an atomic absorption spectrophotometer (AAS). The percentage extraction for the metal ions including Li, Co, Mn and Ni was increased with increasing equilibrium pH. In addition, Mn was preferentially extracted over Li, Co and Ni with the extractants and D2EHPA was found to be the most suitable extractant for separation where the maximized separation factor was operated under an O/A ratio of 1:1 maximized with 1.0 M D2EHPA at an equilibrium pH value of 3.5. Furthermore, the environmental impacts using mid-point criteria including climate change (GWP500), freshwater ecotoxicity (FETPinf), freshwater eutrophication (FEP), human toxicity (HTPinf), marine ecotoxicity (METPinf), marine eutrophication (MEP), particulate matter formation (PMFP), photochem. oxidant form. (POFP), terrestrial acidification (TAP500), terrestrial ecotoxicity (TETPinf) and water depletion (WDP) for LIBs extraction process of Li were assessed by LCA. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928114721&partnerID=40&md5=a07e06aacce168e253aea508535131b4 https://scholars.lib.ntu.edu.tw/handle/123456789/409499 |
ISSN: | 9720626 | SDG/關鍵字: | bioaccumulation; dilution; ester; life cycle analysis; lithium; pH; phase equilibrium; separation |
顯示於: | 化學工程學系 |
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