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  5. Adsorption of Precious Metal Ions on Acrylate Gel Having PEG as Side Chains

Adsorption of Precious Metal Ions on Acrylate Gel Having PEG as Side Chains

来源 :The 6th Joint China-Japan Chemical Engineering Symposium(第六届 | 被引量 : 0次 | 上传用户：nvllnvll
【摘 要】
：
Hydrogel beads were prepared by free-radical polymerization of acrylate having poly(ethylene glycol) (PEG) as the side chain, and applied to adsorb precious metal ions such as Au, Pd and Pt.from acidi
【作 者】
：
Susumu NII Shoitsu ITO Takehiko KINOSHITA Yoshiyuki SHIBATA Yuzo ISHIGAKI Kazunori NAKANO Koichi YAMAGUCHI Shigendo AKITA 
【机 构】
：
Department of Chemical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
【出 处】
：
The 6th Joint China-Japan Chemical Engineering Symposium(第六届
【发表日期】
：
2011年3期
【关键词】
：
PEG hydrogel adsorption gold 
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　　Hydrogel beads were prepared by free-radical polymerization of acrylate having poly(ethylene glycol) (PEG) as the side chain, and applied to adsorb precious metal ions such as Au, Pd and Pt.from acidic solutions prepared with hydrochloric acid.The gel beads had the greatest adsorption amount for Au, which is followed by Pt and Pd.Adsorption amount for Pt was similar to that for Pd.Adsorption equilibrium for the three metals were expressed with Freundlich-type equation.Experimental results of metal ion adsorption from multi-component mixture of Au, Pd and Pt suggested that Au was selectively adsorbed on the gel and the uptake of both Pd and Pt was suppressed.
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