Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries.
This research investigates an eco-friendly hydrometallurgical process for extracting valuable metals such as Li, Co, Ni, and Mn from spent lithium-ion batteries using biodegradable mixed organic acids, supported by coir peat as a natural reductant. Optimal leaching conditions (slurry density: 20 g/L...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2025-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0326867 |
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| author | Sadaf Fatima Muhammad Kaleem Khosa Awal Noor Sadaf Qayyum |
| author_facet | Sadaf Fatima Muhammad Kaleem Khosa Awal Noor Sadaf Qayyum |
| author_sort | Sadaf Fatima |
| collection | DOAJ |
| description | This research investigates an eco-friendly hydrometallurgical process for extracting valuable metals such as Li, Co, Ni, and Mn from spent lithium-ion batteries using biodegradable mixed organic acids, supported by coir peat as a natural reductant. Optimal leaching conditions (slurry density: 20 g/L, temperature: 55 °C, time: 55 minutes, stirring speed: 460 rpm, acid concentration: 50:50 mM ascorbic acid/citric acid) achieved metal efficiencies up to 85%. Incorporation of coir peat further enhanced the leaching efficiencies 98% for Li, 84.6% for Co, 85.6% for Ni, and 79.8% for Mn. Kinetic modeling revealed a chemically controlled dissolution process, with apparent activation energies of 43 kJ/mol (Li), 68 kJ/mol (Co), 47.8 kJ/mol (Ni), and 46 kJ/mol (Mn). Characterization through SEM confirms the morphological changes from spherical to uneven particle surfaces, FT-IR and XRD confirms the structural transformation of of cathode material before and after leaching, and UV-Vis spectroscopy showed the Co-complexes, Mn-complexes, and Ni-complexes at peaks around 380nm, 425 nm to 450 nm respectively due to reduction of metal complexes. The finding highlights the potential of biodegradable reagent and agro-waste material in developing sustainable battery recycling methods. |
| format | Article |
| id | doaj-art-61e1f8fae5bd4007af98f8e3145e0fc2 |
| institution | Kabale University |
| issn | 1932-6203 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-61e1f8fae5bd4007af98f8e3145e0fc22025-08-20T03:28:56ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01207e032686710.1371/journal.pone.0326867Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries.Sadaf FatimaMuhammad Kaleem KhosaAwal NoorSadaf QayyumThis research investigates an eco-friendly hydrometallurgical process for extracting valuable metals such as Li, Co, Ni, and Mn from spent lithium-ion batteries using biodegradable mixed organic acids, supported by coir peat as a natural reductant. Optimal leaching conditions (slurry density: 20 g/L, temperature: 55 °C, time: 55 minutes, stirring speed: 460 rpm, acid concentration: 50:50 mM ascorbic acid/citric acid) achieved metal efficiencies up to 85%. Incorporation of coir peat further enhanced the leaching efficiencies 98% for Li, 84.6% for Co, 85.6% for Ni, and 79.8% for Mn. Kinetic modeling revealed a chemically controlled dissolution process, with apparent activation energies of 43 kJ/mol (Li), 68 kJ/mol (Co), 47.8 kJ/mol (Ni), and 46 kJ/mol (Mn). Characterization through SEM confirms the morphological changes from spherical to uneven particle surfaces, FT-IR and XRD confirms the structural transformation of of cathode material before and after leaching, and UV-Vis spectroscopy showed the Co-complexes, Mn-complexes, and Ni-complexes at peaks around 380nm, 425 nm to 450 nm respectively due to reduction of metal complexes. The finding highlights the potential of biodegradable reagent and agro-waste material in developing sustainable battery recycling methods.https://doi.org/10.1371/journal.pone.0326867 |
| spellingShingle | Sadaf Fatima Muhammad Kaleem Khosa Awal Noor Sadaf Qayyum Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. PLoS ONE |
| title | Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. |
| title_full | Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. |
| title_fullStr | Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. |
| title_full_unstemmed | Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. |
| title_short | Valorization of coir peat in green extraction of valuable metals from spent lithium-ion batteries. |
| title_sort | valorization of coir peat in green extraction of valuable metals from spent lithium ion batteries |
| url | https://doi.org/10.1371/journal.pone.0326867 |
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