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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing Symposium
Presentation Title Adsorption of Platinum and Palladium from Hydrochloric Acid Media by Hydrothermally Treated Garlic Waste Gel
Author(s) Bo Liang, Kai Huang, Hongmin Zhu, Shafiq Alam
On-Site Speaker (Planned) Shafiq Alam
Abstract Scope A new approach of recovering platinum and palladium from electronic wastes by hydrochloric acid leaching followed by selective adsorption on low-cost and environmentally benign biomass sorbent prepared from easily available agricultural waste is suggested. The obtained adsorbents were prepared by a combination of chemical modification and hydrothermal carbonization process with (NH4)2C2O4. It was found that the maximum adsorption capacity of hydrothermal ammoniated garlic peel for Pt(Ⅳ) and Pd(Ⅱ) was 1.64 and 0.42 mol/kg respectively. The Langmuir adsorption isotherm was applied to describe the adsorption process. Kinetics of the Pt(Ⅳ) and Pd(Ⅱ) ions adsorption was found to follow pseudo-second-order equation. The adsorbents were examined by SEM and FT-IR. Based on the characterization results, a possible mechanism of Pt(Ⅳ) and Pd(Ⅱ) ions adsorption with the hydrothermal ammoniated garlic peel was proposed. This study provides a promising adsorbent with high and efficient adsorption property for platinum and palladium recovery from electronic wastes.
Proceedings Inclusion? Planned: A print-only volume


Adsorption of Platinum and Palladium from Hydrochloric Acid Media by Hydrothermally Treated Garlic Waste Gel
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