Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants
As more countries emphasize the importance of the circular economy, recycling resources from waste has become increasingly crucial. This study proposes a novel separation process for SmCo magnets, which can separate and recover metals by precipitation, thus reducing the amount of solvent used. The p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Recycling |
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| Online Access: | https://www.mdpi.com/2313-4321/9/6/111 |
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| author | Jian-Zhi Wang Yi-Chin Tang Yun-Hwei Shen |
| author_facet | Jian-Zhi Wang Yi-Chin Tang Yun-Hwei Shen |
| author_sort | Jian-Zhi Wang |
| collection | DOAJ |
| description | As more countries emphasize the importance of the circular economy, recycling resources from waste has become increasingly crucial. This study proposes a novel separation process for SmCo magnets, which can separate and recover metals by precipitation, thus reducing the amount of solvent used. The precipitation process involved the use of Na<sub>2</sub>SO<sub>4</sub>, NH<sub>4</sub>OH, and H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> to separate Sm, Fe, Cu, and Co, resulting in high precipitation efficiencies of 96.11%, 99.97%, 93.81%, and 98.15%, respectively. Moreover, the recovered metals can be directly used to create magnets after calcination, making this process a step towards achieving a circular economy. |
| format | Article |
| id | doaj-art-cd15aea281584ae582800a135a0b5add |
| institution | DOAJ |
| issn | 2313-4321 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Recycling |
| spelling | doaj-art-cd15aea281584ae582800a135a0b5add2025-08-20T02:43:50ZengMDPI AGRecycling2313-43212024-11-019611110.3390/recycling9060111Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific PrecipitantsJian-Zhi Wang0Yi-Chin Tang1Yun-Hwei Shen2Department of Resources Engineering, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Resources Engineering, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Resources Engineering, National Cheng Kung University, Tainan 70101, TaiwanAs more countries emphasize the importance of the circular economy, recycling resources from waste has become increasingly crucial. This study proposes a novel separation process for SmCo magnets, which can separate and recover metals by precipitation, thus reducing the amount of solvent used. The precipitation process involved the use of Na<sub>2</sub>SO<sub>4</sub>, NH<sub>4</sub>OH, and H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> to separate Sm, Fe, Cu, and Co, resulting in high precipitation efficiencies of 96.11%, 99.97%, 93.81%, and 98.15%, respectively. Moreover, the recovered metals can be directly used to create magnets after calcination, making this process a step towards achieving a circular economy.https://www.mdpi.com/2313-4321/9/6/111SmCo magnetprecipitationresource recoveryrecycling |
| spellingShingle | Jian-Zhi Wang Yi-Chin Tang Yun-Hwei Shen Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants Recycling SmCo magnet precipitation resource recovery recycling |
| title | Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants |
| title_full | Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants |
| title_fullStr | Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants |
| title_full_unstemmed | Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants |
| title_short | Experimental Study on the Separation of Selected Metal Elements (Sm, Co, Fe, and Cu) from Nitric Acid Leachate Using Specific Precipitants |
| title_sort | experimental study on the separation of selected metal elements sm co fe and cu from nitric acid leachate using specific precipitants |
| topic | SmCo magnet precipitation resource recovery recycling |
| url | https://www.mdpi.com/2313-4321/9/6/111 |
| work_keys_str_mv | AT jianzhiwang experimentalstudyontheseparationofselectedmetalelementssmcofeandcufromnitricacidleachateusingspecificprecipitants AT yichintang experimentalstudyontheseparationofselectedmetalelementssmcofeandcufromnitricacidleachateusingspecificprecipitants AT yunhweishen experimentalstudyontheseparationofselectedmetalelementssmcofeandcufromnitricacidleachateusingspecificprecipitants |