Effect of surfactant OPD on the bioleaching of marmatite

被引：32

作者：

Lan, Zhuoyue ^{[1
]}

Hu, Yuehua ^{[2
]}

Qin, Wenqing ^{[2
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Peoples R China

[2] Cent S Univ, Sch Mineral Proc & Bioengn, Changsha 410083, Peoples R China

来源：

MINERALS ENGINEERING | 2009年 / 22卷 / 01期

关键词：

Bioleaching; Bacteria; Sulphide ore; Reaction kinetics; Hydrometallurgy; ZINC-SULFIDE; THIOBACILLUS-FERROOXIDANS; FLOTATION CONCENTRATE; DISSOLUTION; OXIDATION;

D O I：

10.1016/j.mineng.2008.03.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of surfactant o-phenylenediamine (OPD) on the bioleaching of marmatite with mixed cultures of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans was examined in shaking flasks. The effect of OPD on the iron and sulfur oxidizing capacity of the bacteria was also investigated. Results show that the addition of OPD in low concentration was favorable for the bio-oxidation of elemental sulfur and had little negative effect on that of iron. Chemical analysis and EDX analysis of the leached residues reveal that zinc was selectively leached over iron. The elemental sulfur produced from the leaching reaction was not completely oxidized and dissolved only partially even in the presence of bacteria, which limited the dissolution rate of marmatite. However, the addition of OPD accelerated the oxidation of elemental sulfur in the presence of bacteria, thus enhancing the bioleaching rate of marmatite. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：10 / 13

页数：4

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