Recycling of Cerium and Lanthanum from Glass Polishing Sludge
To examine the efficiency of La and Ce recycling processes from the sludge, two major methods were used, namely leaching and precipitation. The findings suggest that 12% of La and 24.2% of Ce were contained in the sludge. The sludge was leached in an optimum condition of 6N HCl at a temperature of 7...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2019-12-01
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| Series: | Polish Journal of Chemical Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pjct-2019-0035 |
| _version_ | 1818666240639500288 |
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| author | Lee Ching-Hwa Lo Yu-Chien Sandagdorj Nyamdorj Gankhuyag Enkhsaikhan Popuri Srinivasa Rao Hung Chi-En |
| author_facet | Lee Ching-Hwa Lo Yu-Chien Sandagdorj Nyamdorj Gankhuyag Enkhsaikhan Popuri Srinivasa Rao Hung Chi-En |
| author_sort | Lee Ching-Hwa |
| collection | DOAJ |
| description | To examine the efficiency of La and Ce recycling processes from the sludge, two major methods were used, namely leaching and precipitation. The findings suggest that 12% of La and 24.2% of Ce were contained in the sludge. The sludge was leached in an optimum condition of 6N HCl at a temperature of 70°C with a 3g/50 mL solid/liquid ratio for 3 h to obtain a 100% leaching recovery of La and Ce. After pH adjustment of the obtained La and Ce optimum leaching solution to 6 with NH4OH and a simultaneous addition of H2O2 in a ratio of 1:1, Ce precipitated out with 65.9% recovery. On the other hand, La was not precipitated. The results obtained in this study reveal that leaching and pH adjustment method could be used to recover the valuable REE of La and Ce from glass polishing sludge in order to reach the goals of resource recycling. |
| first_indexed | 2024-12-17T06:01:23Z |
| format | Article |
| id | doaj.art-c2290109e4a84ccc979f7ce5e59fd408 |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-12-17T06:01:23Z |
| publishDate | 2019-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-c2290109e4a84ccc979f7ce5e59fd4082022-12-21T22:00:53ZengSciendoPolish Journal of Chemical Technology1899-47412019-12-01214263010.2478/pjct-2019-0035pjct-2019-0035Recycling of Cerium and Lanthanum from Glass Polishing SludgeLee Ching-Hwa0Lo Yu-Chien1Sandagdorj Nyamdorj2Gankhuyag Enkhsaikhan3Popuri Srinivasa Rao4Hung Chi-En5Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.The University of the West Indies, Department of Biological and Chemical Sciences, Cave Hill Campus, Barbados-1100Da-Yeh University, Department of Environmental Engineering, Changhua, Taiwan, 515 R.O.C.To examine the efficiency of La and Ce recycling processes from the sludge, two major methods were used, namely leaching and precipitation. The findings suggest that 12% of La and 24.2% of Ce were contained in the sludge. The sludge was leached in an optimum condition of 6N HCl at a temperature of 70°C with a 3g/50 mL solid/liquid ratio for 3 h to obtain a 100% leaching recovery of La and Ce. After pH adjustment of the obtained La and Ce optimum leaching solution to 6 with NH4OH and a simultaneous addition of H2O2 in a ratio of 1:1, Ce precipitated out with 65.9% recovery. On the other hand, La was not precipitated. The results obtained in this study reveal that leaching and pH adjustment method could be used to recover the valuable REE of La and Ce from glass polishing sludge in order to reach the goals of resource recycling.https://doi.org/10.2478/pjct-2019-0035ceriumlanthanumwastesludgeleachingrecycling |
| spellingShingle | Lee Ching-Hwa Lo Yu-Chien Sandagdorj Nyamdorj Gankhuyag Enkhsaikhan Popuri Srinivasa Rao Hung Chi-En Recycling of Cerium and Lanthanum from Glass Polishing Sludge Polish Journal of Chemical Technology cerium lanthanum waste sludge leaching recycling |
| title | Recycling of Cerium and Lanthanum from Glass Polishing Sludge |
| title_full | Recycling of Cerium and Lanthanum from Glass Polishing Sludge |
| title_fullStr | Recycling of Cerium and Lanthanum from Glass Polishing Sludge |
| title_full_unstemmed | Recycling of Cerium and Lanthanum from Glass Polishing Sludge |
| title_short | Recycling of Cerium and Lanthanum from Glass Polishing Sludge |
| title_sort | recycling of cerium and lanthanum from glass polishing sludge |
| topic | cerium lanthanum waste sludge leaching recycling |
| url | https://doi.org/10.2478/pjct-2019-0035 |
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