Chestnut pellicle for the recovery of gold

被引：23

作者：

Parajuli, Durga ^{[1
]}

Adhikari, Chaitanya Raj ^{[1
]}

Kawakita, Hidetaka ^{[1
]}

Yamada, Sayaka ^{[1
]}

Ohto, Keisuke ^{[1
]}

Inoue, Katsutoshi ^{[1
]}

机构：

[1] Saga Univ, Dept Appl Chem, Saga 8408502, Japan

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 02期

关键词：

Chestnut pellicle; Crosslinking; Reductive adsorption; High capacity; IONS; ADSORPTION; WASTE;

D O I：

10.1016/j.biortech.2008.06.058

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

Recovery of Au(III) from hydrochloric acid medium by using crosslinked chestnut pellicle (CCP) gel was studied. Strong selectivity was observed for Au(III) showing negligible affinity for other precious metals and some base metal ions tested. The adsorption isotherm study exhibited the maximum loading capacity of the gel as high as 10.6 mol or about 2.1 kg gold per kg dry weight of gel. The reduction of Au(III) ion to elemental form during adsorption process is expected to be the reason of high selectivity and high capacity for Au(III). Kinetic studies at various temperatures confirm an endothermic adsorption process following the pseudo-first order rate law. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1000 / 1002

页数：3

共 9 条

[1]

KINETICS AND MECHANISM OF THE REDUCTION OF AU(III) TO AU(O) BY SEDIMENTARY ORGANIC MATERIALS [J].