Bioleaching mechanism of Co and Li from spent lithium-ion battery by the mixed culture of acidophilic sulfur-oxidizing and iron-oxidizing bacteria

被引：324

作者：

Xin, Baoping ^{[1
]}

Zhang, Di ^{[1
]}

Zhang, Xian ^{[1
]}

Xia, Yunting ^{[1
]}

Wu, Feng ^{[1
]}

Chen, Shi ^{[1
]}

Li, Li ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem Engn & Environm, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 24期

关键词：

Spent batteries; Spent lithium-ion batteries; Bioleaching mechanism; Co; Li; NI-CD BATTERIES; SECONDARY BATTERIES; BIO-DISSOLUTION; RECOVERY; METALS; CADMIUM; TECHNOLOGIES; FERROOXIDANS; COBALT;

D O I：

10.1016/j.biortech.2009.06.086

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The bioleaching mechanism of Co and Li from spent lithium-ion batteries by mixed culture of sulfur-oxidizing and iron-oxidizing bacteria was investigated. It was found that the highest release of Li occurred at the lowest pH of 1.54 with elemental sulfur as an energy source, the lowest occurred at the highest pH of 1.69 with FeS2. In contrast, the highest release of Co occurred at higher pH and varied ORP with S + FeS2, the lowest occurred at almost unchanged ORP with S. It is suggested that acid dissolution is the main mechanism for Li bioleaching independent of energy matters types, however, apart from acid dissolution, Fe2+ catalyzed reduction takes part in the bioleaching process as well. Co2+ was released by acid dissolution after insoluble Co3+ was reduced into soluble Co2+ by Fe2+ in both FeS2 and FeS2 + S systems. The proposed bioleaching mechanism mentioned above was confirmed by the further results obtained from the experiments of bioprocess-stimulated chemical leaching and from the changes in structure and component of bioleaching residues characterized by XPS, SEM and EDX. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：6163 / 6169

页数：7

共 26 条

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