Liquid‐ and Solid‐based Separations Employing Ionic Liquids for the Recovery of Platinum Group Metals Typically Encountered in Catalytic Converters: A Review
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TL;DR: A review of the state-of-the-art processes for platinum group metal recovery with ionic liquid-based systems can be found in this article , where a brief insight in some environmental considerations related to ionic liquids is also provided.
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Abstract: The wide application range and ascending demand for platinum group metals combined with the progressive depletion of their natural resources renders their efficient recycling a very important and pressing matter. Primarily environmental considerations associated with state-of-the-art recovery processes has shifted the focus of the scientific community towards the investigation of alternative recycling approaches. Within this context, ionic liquids have gained considerable attention in the last two decades chiefly sparked by properties such as tunabilty, low-volatility and relatively easy recyclability. In this review we will provide an understanding of the state-of-the-art processes, including their drawbacks and limitations. The core of the discussion is focused on platinum group metal recovery with ionic liquid-based systems. A brief insight in some environmental considerations related to ionic liquids is also provided while some discussion on research gaps, common misconceptions related to ionic liquids and outlook on unresolved issues could not be absent from this review.
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Citations
Sustainable and Selective Modern Methods of Noble Metal Recycling
TL;DR: In this paper , the most recent solvometallurgical developments in regeneration of Pd, Pt, Rh, Ru, Ir, Os, Ag and Au with emphasis on sustainability and selectivity are discussed.
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Liquid‐ and Solid‐based Separations Employing Ionic Liquids for the Recovery of Platinum Group Metals Typically Encountered in Catalytic Converters: A Review
TL;DR: A review of the state-of-the-art processes for platinum group metal recovery with ionic liquid-based systems can be found in this article , where a brief insight in some environmental considerations related to ionic liquids is also provided.
20
Functionalized agriculture-derived biomass-based adsorbent for the continuous recovery of gold from a simulated mobile phone leachate.
Intan Nurul Rizki,Ilma Amalina,Nurul S. Hasan,N.F. Khusnun,Aishah Abdul Jalil,Mochamad L. Firmansyah +5 more
TL;DR: Researchers developed a functionalized biomass-based adsorbent from rice husk silica, immobilized with an ionic liquid, to recover gold from simulated mobile phone leachate, achieving high adsorption capacity (232.5 mg g-1) and excellent reusability over three cycles.
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Co-extractants based on the Hofmeister effect and the Van ?t Hoff - LeChatelier effect to increase metal extraction efficiencies
C.H.C. Janssen
TL;DR: Researchers investigate the impact of Hofmeister and Van 't Hoff-LeChatelier effects on cobalt and neodymium extraction from aqueous phases to pseudo-protic ionic liquids, achieving up to 10-fold increase in cobalt extraction and 100% increase in neodymium extraction.
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