Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption
Rare earth elements (REEs) and Sc are concentrated in aluminum production byproducts. The novel REEs recovery approach, which involves leaching with acid at a pH > 3 in the presence of MgSO<sub>4</sub>, results in the formation of a pregnant leach solution (PLS) with a low concentrati...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-02-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/14/2/234 |
| _version_ | 1797297464514969600 |
|---|---|
| author | Julia Napol’skikh Andrei Shoppert Irina Loginova Sergey Kirillov Dmitry Valeev |
| author_facet | Julia Napol’skikh Andrei Shoppert Irina Loginova Sergey Kirillov Dmitry Valeev |
| author_sort | Julia Napol’skikh |
| collection | DOAJ |
| description | Rare earth elements (REEs) and Sc are concentrated in aluminum production byproducts. The novel REEs recovery approach, which involves leaching with acid at a pH > 3 in the presence of MgSO<sub>4</sub>, results in the formation of a pregnant leach solution (PLS) with a low concentration of iron (Fe) and titanium (Ti) and a large number of valuable elements. This work studies the application of chelating resin Puromet MTS9580 in the sorption recovery of Sc from sulfate solutions. To analyze the static Sc sorption data, Langmuir, Freundlich, and Temkin isotherm models were used. The Langmuir isotherm model was the best fitted to the experimental data, with a coefficient of determination (R<sup>2</sup>) of 0.983. The dynamic adsorption experiment was conducted using a PLS and a simulated solution without contaminants. Adsorption of Sc from the simulated solution was better fitted to the Thomas model with a Sc capacity greater than 6.4 mg mL<sup>−1</sup>. Because Ti had a gradual decrease in C/C<sub>0</sub>, which the Thomas model was unable to simulate, the modified dose-response (MDR) model fitted better with PLS with a Sc capacity greater than 3.8 mg mL<sup>−1</sup>. The NaHCO<sub>3</sub> solution (200 g L<sup>−1</sup>) effectively desorbed Sc (>98%) from simulated and PLS solutions after 1.5 h of stirring in a batch mode. After 1.5 h of desorption, the concentration of Sc in the desorption solution was 461.5 mg L<sup>−1</sup>, while the concentration of Mg and Ti was lower than 200 mg L<sup>−1</sup> and 50 mg L<sup>−1</sup>, respectively. |
| first_indexed | 2024-03-07T22:21:36Z |
| format | Article |
| id | doaj.art-4325e27b157e4d0bb6dc93d55039d801 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-07T22:21:36Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-4325e27b157e4d0bb6dc93d55039d8012024-02-23T15:27:26ZengMDPI AGMetals2075-47012024-02-0114223410.3390/met14020234Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange SorptionJulia Napol’skikh0Andrei Shoppert1Irina Loginova2Sergey Kirillov3Dmitry Valeev4Laboratory of Advanced Technologies in Non-Ferrous and Ferrous Metals Raw Materials Processing, Ural Federal University, 620002 Yekaterinburg, RussiaLaboratory of Advanced Technologies in Non-Ferrous and Ferrous Metals Raw Materials Processing, Ural Federal University, 620002 Yekaterinburg, RussiaDepartment of Non-Ferrous Metals Metallurgy, Ural Federal University, 620002 Yekaterinburg, RussiaDepartment of Rare Earth Metals and Nanomaterials, Ural Federal University, 620002 Yekaterinburg, RussiaLaboratory of Sorption Methods, Vernadsky Institute of Geochemistry and Analytical Chemistry, The Russian Academy of Sciences, 119991 Moscow, RussiaRare earth elements (REEs) and Sc are concentrated in aluminum production byproducts. The novel REEs recovery approach, which involves leaching with acid at a pH > 3 in the presence of MgSO<sub>4</sub>, results in the formation of a pregnant leach solution (PLS) with a low concentration of iron (Fe) and titanium (Ti) and a large number of valuable elements. This work studies the application of chelating resin Puromet MTS9580 in the sorption recovery of Sc from sulfate solutions. To analyze the static Sc sorption data, Langmuir, Freundlich, and Temkin isotherm models were used. The Langmuir isotherm model was the best fitted to the experimental data, with a coefficient of determination (R<sup>2</sup>) of 0.983. The dynamic adsorption experiment was conducted using a PLS and a simulated solution without contaminants. Adsorption of Sc from the simulated solution was better fitted to the Thomas model with a Sc capacity greater than 6.4 mg mL<sup>−1</sup>. Because Ti had a gradual decrease in C/C<sub>0</sub>, which the Thomas model was unable to simulate, the modified dose-response (MDR) model fitted better with PLS with a Sc capacity greater than 3.8 mg mL<sup>−1</sup>. The NaHCO<sub>3</sub> solution (200 g L<sup>−1</sup>) effectively desorbed Sc (>98%) from simulated and PLS solutions after 1.5 h of stirring in a batch mode. After 1.5 h of desorption, the concentration of Sc in the desorption solution was 461.5 mg L<sup>−1</sup>, while the concentration of Mg and Ti was lower than 200 mg L<sup>−1</sup> and 50 mg L<sup>−1</sup>, respectively.https://www.mdpi.com/2075-4701/14/2/234chelating resinSc recoveryselective sorptionadsorption isothermsulfate solutionPuromet MTS9580 |
| spellingShingle | Julia Napol’skikh Andrei Shoppert Irina Loginova Sergey Kirillov Dmitry Valeev Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption Metals chelating resin Sc recovery selective sorption adsorption isotherm sulfate solution Puromet MTS9580 |
| title | Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption |
| title_full | Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption |
| title_fullStr | Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption |
| title_full_unstemmed | Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption |
| title_short | Selective Recovery of Scandium (Sc) from Sulfate Solution of Bauxite Residue Leaching Using Puromet MTS9580 Ion-Exchange Sorption |
| title_sort | selective recovery of scandium sc from sulfate solution of bauxite residue leaching using puromet mts9580 ion exchange sorption |
| topic | chelating resin Sc recovery selective sorption adsorption isotherm sulfate solution Puromet MTS9580 |
| url | https://www.mdpi.com/2075-4701/14/2/234 |
| work_keys_str_mv | AT julianapolskikh selectiverecoveryofscandiumscfromsulfatesolutionofbauxiteresidueleachingusingpurometmts9580ionexchangesorption AT andreishoppert selectiverecoveryofscandiumscfromsulfatesolutionofbauxiteresidueleachingusingpurometmts9580ionexchangesorption AT irinaloginova selectiverecoveryofscandiumscfromsulfatesolutionofbauxiteresidueleachingusingpurometmts9580ionexchangesorption AT sergeykirillov selectiverecoveryofscandiumscfromsulfatesolutionofbauxiteresidueleachingusingpurometmts9580ionexchangesorption AT dmitryvaleev selectiverecoveryofscandiumscfromsulfatesolutionofbauxiteresidueleachingusingpurometmts9580ionexchangesorption |