Author： Kawakita Hidetaka Inoue Katsutoshi Ohto Keisuke Shimada Satomi Itayama Kyoko
Publisher： Taylor & Francis Ltd
ISSN： 0736-6299
Source： Solvent Extraction and Ion Exchange, Vol.25, Iss.6, 2007-11, pp. : 845-855
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Abstract
New adsorption gels were prepared by chemically immobilizing functional groups of primary amine and ethylenediamine on waste newspaper to investigate their adsorption behaviors for various metal ions from water at varying pH and from varying concentration of hydrochloric acid solution. They exhibited very high selectivity to precious metals such as gold, platinum, and palladium over base metals in the adsorption from hydrochloric acid solution and the selectivity was higher than commercially available anion exchange resin. The maximum adsorption capacities for palladium and platinum were found to be greater than 1 mol/kg-dry gel.
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