Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants
Solvent extraction (SX) separation of Al from Ni sulphate leach liquor (LL) of spent Raneynickel catalyst containing 0.12 M Al and 1.448 M Ni using organophosphorus extractants has been investigated. Optimization of process conditions includes aqueous pH, extractant concentration, phase ratio, and s...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/286494 |
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| author | Satunuri Venkateswar Rao Dong Hyo Yang Jeong Soo Sohn Soo-Kyung Kim |
| author_facet | Satunuri Venkateswar Rao Dong Hyo Yang Jeong Soo Sohn Soo-Kyung Kim |
| author_sort | Satunuri Venkateswar Rao |
| collection | DOAJ |
| description | Solvent extraction (SX) separation of Al from Ni sulphate leach liquor (LL) of spent Raneynickel catalyst containing 0.12 M Al and 1.448 M Ni using organophosphorus extractants has been investigated. Optimization of process conditions includes aqueous pH, extractant concentration, phase ratio, and stripping. Comparison of Al extraction efficiency with 0.45 M extractant concentration for TOPS 99, PC 88 A, and Cyanex 272 at an equilibrium pH of 2.23 was 81.8%, 98.6%, and 75%, respectively. The corresponding coextraction of Ni was 0.65, 0.6, and 0.9. Among the three extractants screened, PC 88A showed better extraction efficiency for Al at lower pH values than the others. Using 0.45 M PC 88 A, extraction isotherm was obtained at an aqueous-to-organic (A : O) phase ratio of 1 : 1–3 and O : A ratio of 1 : 1–5, which predicted possible separation of Al in 2 stages at A/O ratio of 2. Quantitative stripping was achieved by H2SO4. |
| format | Article |
| id | doaj-art-c39d92d311064ab4adb7d815528854e2 |
| institution | DOAJ |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-c39d92d311064ab4adb7d815528854e22025-08-20T03:23:12ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/286494286494Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based ExtractantsSatunuri Venkateswar Rao0Dong Hyo Yang1Jeong Soo Sohn2Soo-Kyung Kim3Urban Mining Research Team, Korea Institute of Geosciences and Minerals Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Republic of KoreaUrban Mining Research Team, Korea Institute of Geosciences and Minerals Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Republic of KoreaUrban Mining Research Team, Korea Institute of Geosciences and Minerals Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Republic of KoreaUrban Mining Research Team, Korea Institute of Geosciences and Minerals Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Republic of KoreaSolvent extraction (SX) separation of Al from Ni sulphate leach liquor (LL) of spent Raneynickel catalyst containing 0.12 M Al and 1.448 M Ni using organophosphorus extractants has been investigated. Optimization of process conditions includes aqueous pH, extractant concentration, phase ratio, and stripping. Comparison of Al extraction efficiency with 0.45 M extractant concentration for TOPS 99, PC 88 A, and Cyanex 272 at an equilibrium pH of 2.23 was 81.8%, 98.6%, and 75%, respectively. The corresponding coextraction of Ni was 0.65, 0.6, and 0.9. Among the three extractants screened, PC 88A showed better extraction efficiency for Al at lower pH values than the others. Using 0.45 M PC 88 A, extraction isotherm was obtained at an aqueous-to-organic (A : O) phase ratio of 1 : 1–3 and O : A ratio of 1 : 1–5, which predicted possible separation of Al in 2 stages at A/O ratio of 2. Quantitative stripping was achieved by H2SO4.http://dx.doi.org/10.1100/2012/286494 |
| spellingShingle | Satunuri Venkateswar Rao Dong Hyo Yang Jeong Soo Sohn Soo-Kyung Kim Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants The Scientific World Journal |
| title | Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants |
| title_full | Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants |
| title_fullStr | Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants |
| title_full_unstemmed | Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants |
| title_short | Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants |
| title_sort | purification of sulphate leach liquor of spent raneynickel catalyst containing al and ni by solvent extraction with organophosphorus based extractants |
| url | http://dx.doi.org/10.1100/2012/286494 |
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