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Jeongsoo Sohn - One of the best experts on this subject based on the ideXlab platform.
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recovery of Cobalt Sulfate from spent lithium ion batteries by reductive leaching and solvent extraction with cyanex 272
Hydrometallurgy, 2010Co-Authors: Jingu Kang, Jeongsoo Sohn, G Senanayake, Shun Myung ShinAbstract:Cobalt Sulfate was recovered from crushed and screened prismatic type spent lithium ion batteries (LIBs) containing 5-20% Co, 5-7% Li, 5-10% Ni, 15% organic chemicals, and 7% plastics together with Cu, Al, Fe, and Mn. Cobalt was reductively leached from the - 16 mesh fraction in 1 h by stirring with 2 M H2SO4 and 6 vol.% H2O2, at 60 °C and 300 rpm using a solid/liquid ratio of 100 g/L to give a Cobalt concentration of 28 g/L, corresponding to a leaching efficiency of > 99%. Metal ion impurities such as copper, iron, and aluminium were precipitated as hydroxides from solution by adjusting pH to 6.5. Cobalt was then selectively extracted from the purified aqueous phase by equilibrating with 50% saponified 0.4 M Cyanex 272 at an equilibrium pH ∼ 6. The McCabe-Thiele plot predicted 99.9% Cobalt extraction in a 2 stage counter-current operation with A/O ratio of 1/2. Separation factors for the extraction of Co/Li and Co/Ni at pH 6 were close to 750. The stripping of the loaded organic phase with 2 M H2SO4 produced a solution of 96 g/L Co from which pure pigment grade Cobalt Sulfate could be recovered by evaporation/recrystallisation. Overall, 92% Cobalt could be recovered from the spent lithium ion batteries.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
Basudev Swain - One of the best experts on this subject based on the ideXlab platform.
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Development of process flow sheet for recovery of high pure Cobalt from Sulfate leach liquor of LIB industry waste: A mathematical model correlation to predict optimum operational conditions
Separation and Purification Technology, 2008Co-Authors: Basudev Swain, Jinki Jeong, Jae Chun Lee, Gaeho LeeAbstract:The paper contains a new hydrometallurgical process flow sheet for the recovery of high pure Cobalt Sulfate solution/salt from waste LiCoO2 cathodic active material generated from lithium ion battery (LIB) industry waste. Cobalt was recovered as Cobalt Sulfate from Sulfate leach liquor by solvent extraction process using Cyanex 272 as an extractant. For quantitative extraction of pure Cobalt from waste LiCoO2 different process parameters such as concentration of Cyanex 272, O/A volume ratio, McCabe–Thiele extraction isotherm, scrubbing isotherm required were optimized. A mathematical model was developed to correlate metal extractability and Cyanex 272 concentrations and volume content. Optimum conditions required for quantitative extraction of pure Cobalt Sulfate/salt using Cyanex 272 were estimated by a proposed model. From predicted model, the mechanism for extraction and McCabe–Thiele isotherm for extraction were derived and compared with obtained results. A good agreement between proposed model and observed results was indicated. The Cobalt loaded Cyanex 272 was stripped with sulfuric acid and 99.99% pure Cobalt Sulfate was obtained.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
Gaeho Lee - One of the best experts on this subject based on the ideXlab platform.
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Development of process flow sheet for recovery of high pure Cobalt from Sulfate leach liquor of LIB industry waste: A mathematical model correlation to predict optimum operational conditions
Separation and Purification Technology, 2008Co-Authors: Basudev Swain, Jinki Jeong, Jae Chun Lee, Gaeho LeeAbstract:The paper contains a new hydrometallurgical process flow sheet for the recovery of high pure Cobalt Sulfate solution/salt from waste LiCoO2 cathodic active material generated from lithium ion battery (LIB) industry waste. Cobalt was recovered as Cobalt Sulfate from Sulfate leach liquor by solvent extraction process using Cyanex 272 as an extractant. For quantitative extraction of pure Cobalt from waste LiCoO2 different process parameters such as concentration of Cyanex 272, O/A volume ratio, McCabe–Thiele extraction isotherm, scrubbing isotherm required were optimized. A mathematical model was developed to correlate metal extractability and Cyanex 272 concentrations and volume content. Optimum conditions required for quantitative extraction of pure Cobalt Sulfate/salt using Cyanex 272 were estimated by a proposed model. From predicted model, the mechanism for extraction and McCabe–Thiele isotherm for extraction were derived and compared with obtained results. A good agreement between proposed model and observed results was indicated. The Cobalt loaded Cyanex 272 was stripped with sulfuric acid and 99.99% pure Cobalt Sulfate was obtained.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
Jinki Jeong - One of the best experts on this subject based on the ideXlab platform.
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Development of process flow sheet for recovery of high pure Cobalt from Sulfate leach liquor of LIB industry waste: A mathematical model correlation to predict optimum operational conditions
Separation and Purification Technology, 2008Co-Authors: Basudev Swain, Jinki Jeong, Jae Chun Lee, Gaeho LeeAbstract:The paper contains a new hydrometallurgical process flow sheet for the recovery of high pure Cobalt Sulfate solution/salt from waste LiCoO2 cathodic active material generated from lithium ion battery (LIB) industry waste. Cobalt was recovered as Cobalt Sulfate from Sulfate leach liquor by solvent extraction process using Cyanex 272 as an extractant. For quantitative extraction of pure Cobalt from waste LiCoO2 different process parameters such as concentration of Cyanex 272, O/A volume ratio, McCabe–Thiele extraction isotherm, scrubbing isotherm required were optimized. A mathematical model was developed to correlate metal extractability and Cyanex 272 concentrations and volume content. Optimum conditions required for quantitative extraction of pure Cobalt Sulfate/salt using Cyanex 272 were estimated by a proposed model. From predicted model, the mechanism for extraction and McCabe–Thiele isotherm for extraction were derived and compared with obtained results. A good agreement between proposed model and observed results was indicated. The Cobalt loaded Cyanex 272 was stripped with sulfuric acid and 99.99% pure Cobalt Sulfate was obtained.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
Jae Chun Lee - One of the best experts on this subject based on the ideXlab platform.
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Development of process flow sheet for recovery of high pure Cobalt from Sulfate leach liquor of LIB industry waste: A mathematical model correlation to predict optimum operational conditions
Separation and Purification Technology, 2008Co-Authors: Basudev Swain, Jinki Jeong, Jae Chun Lee, Gaeho LeeAbstract:The paper contains a new hydrometallurgical process flow sheet for the recovery of high pure Cobalt Sulfate solution/salt from waste LiCoO2 cathodic active material generated from lithium ion battery (LIB) industry waste. Cobalt was recovered as Cobalt Sulfate from Sulfate leach liquor by solvent extraction process using Cyanex 272 as an extractant. For quantitative extraction of pure Cobalt from waste LiCoO2 different process parameters such as concentration of Cyanex 272, O/A volume ratio, McCabe–Thiele extraction isotherm, scrubbing isotherm required were optimized. A mathematical model was developed to correlate metal extractability and Cyanex 272 concentrations and volume content. Optimum conditions required for quantitative extraction of pure Cobalt Sulfate/salt using Cyanex 272 were estimated by a proposed model. From predicted model, the mechanism for extraction and McCabe–Thiele isotherm for extraction were derived and compared with obtained results. A good agreement between proposed model and observed results was indicated. The Cobalt loaded Cyanex 272 was stripped with sulfuric acid and 99.99% pure Cobalt Sulfate was obtained.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.
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hydrometallurgical process for recovery of Cobalt from waste cathodic active material generated during manufacturing of lithium ion batteries
Journal of Power Sources, 2007Co-Authors: Basudev Swain, Gaeho Lee, Jinki Jeong, Jae Chun Lee, Jeongsoo SohnAbstract:The paper presents a new leaching-solvent extraction hydrometallurgical process for the recovery of a pure and marketable form of Cobalt Sulfate solution from waste cathodic active material generated during manufacturing of lithium ion batteries (LIBs). Leaching of the waste was carried out as a function of the leachant H2SO4 concentration, temperature, pulp density and reductant H2O2 concentration. The 93% of Cobalt and 94% of lithium were leached at suitable optimum conditions of pulp density: 100 g L −1 ,2 M H 2SO4, 5 vol.% of H2O2, with a leaching time 30 min and a temperature 75 ◦ C. In subsequent the solvent extraction study, 85.42% of the Cobalt was recovered using 1.5 M Cyanex 272 as an extractant at an O/A ratio of 1.6 from the leach liquor at pH 5.00. The rest of the Cobalt was totally recovered from the raffinate using 0.5 M of Cyanex 272 and an O/A ratio of 1, and a feed pH of 5.35. Then the co-extracted lithium was scrubbed from the Cobalt-loaded organic using 0.1 M Na2CO3. Finally, the Cobalt Sulfate solution with a purity 99.99% was obtained from the Cobalt-loaded organic by stripping with H2SO4. © 2007 Elsevier B.V. All rights reserved.