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Separation Science and Technology Volume 44, 2009 - Issue 12
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Selective Gold Recovery Using Orange Waste

Hidetaka Kawakita Department of Applied Chemistry, Saga University, Saga, Japan
,
Minoru Abe Department of Applied Chemistry, Saga University, Saga, Japan
,
Jun-Ichi Inoue Department of Applied Chemistry, Saga University, Saga, Japan
,
Keisuke Ohto Department of Applied Chemistry, Saga University, Saga, Japan
,
Hiroyuki Harada Department of Applied Chemistry, Saga University, Saga, Japan
&
Katsutoshi Inoue Department of Applied Chemistry, Saga University, Saga, JapanCorrespondence[email protected]
Pages 2797-2805 | Received 26 Jan 2009, Accepted 30 Mar 2009, Published online: 21 Aug 2009
 
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Abstract

Orange waste was crosslinked with sulfuric acid to immobilize the hesperetin-like molecule. Au(III) was selectively recovered from hydrochloric acid, exhibiting the negligible affinity to other precious metals and base metal ions. The isotherm demonstrated that the maximum loading capacity on the crosslinked orange waste is approximately 10 mol/kg, suggesting that orange waste has a high possibility for commercial application for gold recovery.

ACKNOWLEDGEMENTS

This study was supported by the Industrial Technology Research Grant Program in 2006 (06A18205c) from the New Energy and the Industrial Technology Development Organization (NEDO) of Japan.

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