Recovery of germanium from waste solar panels using ion-exchange membrane and solvent extraction

被引：48

作者：

Kuroiwa, Keisuke ^{[1
]}

Ohura, Shin-ichiro ^{[1
]}

Morisada, Shintaro ^{[1
]}

Ohto, Keisuke ^{[1
]}

Kawakita, Hidetaka ^{[1
]}

Matsuo, Yoshiyasu ^{[2
]}

Fukuda, Daisuke ^{[2
]}

机构：

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

[2] NT Corp, Imari 8480027, Japan

来源：

MINERALS ENGINEERING | 2014年 / 55卷

关键词：

Germanium; Solar panel; Catechol; Membrane; Solvent extraction; Recovery; CATECHOL COMPLEXATION;

D O I：

10.1016/j.mineng.2013.10.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Germanium was recovered from the waste solar panels using the processes of selective catechol complexation, membrane adsorption and elution, and solvent extraction. Because the solar panels included a high concentration of germanium, the key technique used was high selectivity against silicate ion using hydrometallurgy. Due to the selective complexation of germanium ions with catechol, the operation at low pH enhanced the selectivity. 0.1 M hydrochloric acid was used to elute the germanium ions. To remove the catechol from the germanium containing solution, solvent extraction using trioctylphosphine oxide was performed, demonstrating that 81% of catechol was removed. Compared with the initial percentage of germanium to silica, the concentration of silicate was 39 times higher in the germanium-concentrated solution, indicating that the proposed sequential process was very a powerful technique for the recovering germanium. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：181 / 185

页数：5

共 12 条

[1] Abiotic transformation of catechol and 1-naphthol in aqueous solution - Influence of environmental factors [J].