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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing Symposium
Presentation Title Adsorptive Recovery of Palladium and Platinum from Acidic Chloride Media Using Chemically Modified Persimmon Tannnin
Author(s) Manju Gurung, Birendra Adhikari, Katsutoshi Inoue, Hidetaka Kawakita, Keisuke Ohto,
On-Site Speaker (Planned)
Abstract Scope A novel biosorption gel was prepared by immobilizing functional groups of glycidyltrimethyl ammonium chloride, a kind of quaternary ammonium chloride, onto polymer matrices of persimmon extract for the recovery of precious metals, such as palladium(II) and platinum(IV) from chloride media. It was found that this adsorption gel exhibits high selectivity to gold(III), palladium(II) and platinum(IV) over base metals such as copper(II) and iron(III) while crude persimmon extract, the feed material, exhibits high selectivity only for gold(III). From the adsorption isotherms study, the maximum adsorption capacities for gold(III), palladium(II) and platinum(IV) were evaluated as 3.30, 1.67 and 1.00 mol/kg, respectively. Those for palladium(II) and platinum(IV) are higher than those of simple quaternary ammonium chloride type of chemically modified persimmon tannin gel and commercially available anion exchange resin.
Proceedings Inclusion? Planned: A print-only volume


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Adsorptive Recovery of Palladium and Platinum from Acidic Chloride Media Using Chemically Modified Persimmon Tannnin
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