Extraction of Valuable Metals From Spent Hydrodesulfurization Catalyst By Two Stage Leaching Method | ||
| Iraqi Journal of Chemical and Petroleum Engineering | ||
| Article 1, Volume 12, Issue 4, December 2011, Pages 21-35 | ||
| Authors | ||
| Mariam F. AbdulNabi; Nada S. Ahmedzeki; Wadood T. Mohammed | ||
| Abstract | ||
| Spent hydrodesulfurization (Co-Mo/γ-Al2O3) catalyst generally contains valuable metals like molybdenum (Mo), cobalt (Co), aluminium (Al) on a supporting material, such as γ-Al2O3. In the present study, a two stages alkali/acid leaching process was conducted to study leaching of cobalt, molybdenum and aluminium from Co-Mo/γ-Al2O3 catalyst. The acid leaching of spent catalyst, previously treated by alkali solution to remove molybdenum, yielded a solution rich in cobalt and aluminium. | ||
| Keywords | ||
| spent HDS catalyst; sodium carbonate; sulfuric acid; leaching; valuable metals | ||
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