دورية أكاديمية
Aqueous Pretreatment Effect to Improve Au, Ag, and Pt Recovery from Spent Automotive Catalysts
| العنوان: | Aqueous Pretreatment Effect to Improve Au, Ag, and Pt Recovery from Spent Automotive Catalysts |
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| المؤلفون: | Adriana Vargas, Johana Borda, Robinson Torres |
| المصدر: | Revista Científica, Vol 47, Iss 2 (2023) |
| بيانات النشر: | Universidad Distrital Francisco José de Caldas, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Technology LCC:Science |
| مصطلحات موضوعية: | leaching, precious metals, waste automotive catalysts, Technology, Science |
| الوصف: | Automotive catalysts represent a secondary source for precious metals recovery. These elements are usually obtained from minerals. Recently, methods have been sought to recover them from waste materials. The main route consists of pyrometallurgical treatments at high temperatures with the generation of other pollutants and very high energy consumption. With hydrometallurgy, routes can be developed which favor the aqueous extraction of said elements at room temperature. In an automotive catalyst, there are different metals which can interfere in the recovery process. In this study, sodium citrate (Na3C6H5O7•H2O), nitric acid (HNO3), and hydrochloric acid (HCl) were evaluated as a hydrometallurgical pretreatment to dissolve Fe, Zn, and Pb contained in a spent automotive catalyst and to improve the subsequent extraction of the precious metals contained therein (Au, Ag, and Pt). Afterwards, the aqueous extraction of precious elements with thiourea (SC(NH2)2) was carried out, comparing the effect of the pretreatment reagents. Finally, the feasibility and effect of each pretreatment as a route for precious metals recovery were analyzed with the aim to avoid processes at high temperatures. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian |
| تدمد: | 23448350 0124-2253 2344-8350 |
| Relation: | https://revistas.udistrital.edu.co/index.php/revcie/article/view/20875; https://doaj.org/toc/0124-2253; https://doaj.org/toc/2344-8350 |
| DOI: | 10.14483/23448350.20875 |
| URL الوصول: | https://doaj.org/article/fc610a9aa208447f800d93a5f26a0d4e |
| رقم الأكسشن: | edsdoj.fc610a9aa208447f800d93a5f26a0d4e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23448350 01242253 |
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| DOI: | 10.14483/23448350.20875 |