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Automotive spent catalysts treatment and platinum recovery

TitleAutomotive spent catalysts treatment and platinum recovery
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2013
AuthorsPietrelli, L., and Fontana Danilo
JournalInternational Journal of Environment and Waste Management
KeywordsHydrometallurgy, leaching, PGM, Phosphine oxide, Phosphorus compounds, Platinum, Platinum group metals, Platinum recovery, Recovery, Solvent extraction, Spent catalyst, Tin, Topo, Trichloroethylene, waste management

The recovery of Platinum from spent catalysts was examined. Platinum leaching was studied considering particle size, temperature, solid-liquid and HCl/ HNO3 ratio effects. Many elements together with Pt were taken from a mixed spent catalyst sample. The main components of the leach liquor were Pt (1.84 g/ kg cat) and Fe (0.94 g/kg cat). Platinum was separated from the leach aqueous solution by using Tri-Octyl Phosphine Oxide (TOPO) in kerosene. The extraction was studied considering equilibrium time, TOPO and HCl concentration, tin(II) chloride presence and stripping agents. Iron represents the main ion competitor for Pt extraction. Copyright © 2013 Inderscience Enterprises Ltd.


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Citation KeyPietrelli2013222