"Study on recovery of cobalt metal from secondary lithium batter
「"Study on recovery of cobalt metal from secondary lithium batter」於資料集「EPQSummary_WasteManagement」由單位「行政院環境保護署」的郭先生所提供，聯繫電話是02-2311-7722 EXT.2399，最近更新時間為：2022-01-15 01:13:53。 欄位Project Title的內容是"Study on recovery of cobalt metal from secondary lithium battery by modified amine extractant combined with acid leaching" ， 欄位Project Subject的內容是"With development in high-tech industry and electronic products have made recycling electronic waste one of the most important issues worldwides. Many researches focus on the recovery of waste battery using the phosphorus extractant for selective separation of valuable metals. This study aims to develop the amine-based extractant for recycling Co in lithium-ion batteries. In this study, the cathode materials after NaOH soaking and calcination were dissolved within 2 M sulfuric acid under 20 g/L solid loading, 2 vol% of H2O2 as reducing agent at 60 °C for 60 min. The acid dissolution rate of cobalt assisted with ultrasound attained 70.67%. Then, the extraction of metals from the acid liquid were conducted using TOA and Aliquat 336 amine-based extractants. The extracting parameters include pH, extraction time and molar ratio of extractant. The extracting efficiency of cobalt using TOA as extractant from 8M HCl and 2M H2SO4 reaches 97.24% at pH 4, molar ratio = 1 in 20 min. Results of electrolysis showed that the current efficiency of recovering Co metal on the cathode attained around 30% under a constant current 15 mA/cm2 within 2 hours. Further, removal efficiencies of Co, Mn and Ni reached 100% in 6 h. Since the reduction rate of Co is greater than that of Ni, the electrodeposition time was suggested to be 150 min, at which the recovery of Co and Ni were 85% and 60%, respectively, to increase the purity of Co metal. Almost 100% of Mn was removed as manganese dioxide over the anode surface. Under the low current density of 5 mA/cm2 the purity of cathodic Co metal was 99.7%; as increasing the current density to 15 mA/cm2, Co metal coule be still properly recovered with a purity as high as 98% ." ， 欄位Project Year的內容是2019 ， 欄位Organizer的內容是"Recycling Fund Management Board" ， 欄位Executive Unit的內容是"國立中山大學" ， 欄位Reporting download URL的內容是https://epq.epa.gov.tw/project/filedownload.aspx?fid=203554 ， 欄位Publish Date的內容是20200110 。
Project Title
"Study on recovery of cobalt metal from secondary lithium battery by modified amine extractant combined with acid leaching"
Project Subject
"With development in high-tech industry and electronic products have made recycling electronic waste one of the most important issues worldwides. Many researches focus on the recovery of waste battery using the phosphorus extractant for selective separation of valuable metals. This study aims to develop the amine-based extractant for recycling Co in lithium-ion batteries. In this study, the cathode materials after NaOH soaking and calcination were dissolved within 2 M sulfuric acid under 20 g/L solid loading, 2 vol% of H2O2 as reducing agent at 60 °C for 60 min. The acid dissolution rate of cobalt assisted with ultrasound attained 70.67%. Then, the extraction of metals from the acid liquid were conducted using TOA and Aliquat 336 amine-based extractants. The extracting parameters include pH, extraction time and molar ratio of extractant. The extracting efficiency of cobalt using TOA as extractant from 8M HCl and 2M H2SO4 reaches 97.24% at pH 4, molar ratio = 1 in 20 min. Results of electrolysis showed that the current efficiency of recovering Co metal on the cathode attained around 30% under a constant current 15 mA/cm2 within 2 hours. Further, removal efficiencies of Co, Mn and Ni reached 100% in 6 h. Since the reduction rate of Co is greater than that of Ni, the electrodeposition time was suggested to be 150 min, at which the recovery of Co and Ni were 85% and 60%, respectively, to increase the purity of Co metal. Almost 100% of Mn was removed as manganese dioxide over the anode surface. Under the low current density of 5 mA/cm2 the purity of cathodic Co metal was 99.7%; as increasing the current density to 15 mA/cm2, Co metal coule be still properly recovered with a purity as high as 98% ."
Project Year
2019
Organizer
"Recycling Fund Management Board"
Executive Unit
"國立中山大學"
Reporting download URL
Publish Date
20200110
「"Study on recovery of cobalt metal from secondary lithium batter」所屬的資料集：「EPQSummary_WasteManagement」的其他資料
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2017
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2015
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""
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"The total amount of kitchen waste in Taiwan is 2,000 tons/day. Usually, kitchen waste was utilized
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2014
Organizer：
"Bureau of Environmental Inspection"
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2018
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2016
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2013
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2017
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2021
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