Effect of L-cysteine on bioleaching of Ni-Cu sulphide by A. manzaensis

被引：6

作者：

He Zhi-guo ^{[1
,2
]}

Zhao Jian-cun ^{[1
,2
]}

Liang Wan-jie ^{[1
,2
]}

Hu Yue-hua ^{[1
,2
]}

Qiu Guan-zhou ^{[1
,2
]}

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China

[2] Cent S Univ, Key Lab Biomet, Minist Educ, Changsha 410083, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2011年 / 18卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Acidianus manzaensis; L-cysteine; Ni-Cu sulfide; bioleaching; surface charge; Zeta potential; THIOBACILLUS-FERROOXIDANS; PYRITE; CHALCOPYRITE; OXIDATION; MECHANISM; SULFUR;

D O I：

10.1007/s11771-011-0707-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of L-cysteine in different concentrations on the bioleaching of Ni-Cu sulfide was studied with an extremely thermophilic archaea, Acidianus manzaensis. It is found that adding certain amounts of L-cysteine to the bioleaching system of Ni-Cu sulfide largely enhances the leaching rate. X-ray diffraction (XRD) patterns show the change of bioleached solid residues and the effect of L-cysteine on the surface charges of minerals. Zeta potential and IR spectra of mineral surface show that the interaction between L-cysteine and mineral leads to the formation of metal complex, which is propitious to the bioleaching of Ni-Cu sulfide by Acidianus manzaensis.

引用

页码：381 / 385

页数：5

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