BACTERIAL LEACHING OF A SULFIDE ORE BY THIOBACILLUS-FERROOXIDANS AND THIOBACILLUS-THIOOXIDANS .1. SHAKE FLASK STUDIES

被引：53

作者：

LIZAMA, HM

SUZUKI, I

机构：

[1] Univ of Manitoba, Winnipeg, Manit,, Can, Univ of Manitoba, Winnipeg, Manit, Can

来源：

BIOTECHNOLOGY AND BIOENGINEERING | 1988年 / 32卷 / 01期

关键词：

BACTERIOLOGY - BIOTECHNOLOGY - CELL CULTURE - Growth Kinetics;

D O I：

10.1002/bit.260320116

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Bacterial leaching of a sulfide ore containing pyrite, chalcopyrite, and sphalerite was studied in shake flask experiments using Thiobacillus ferrooxidans and thiobacillus thiooxidans strains isolated from mine sites. The Fe**2** plus grown T. ferrooxidans isolates solubilized sphalerite preferentially over chalcopyrite leaching 7-10% Cu, 68-76% Zn, and 10-22% Fe from the ore in 18 days. The sulfur-grown T. thiooxidans isolates leached Zn much more slowly and very little Fe, with a Cu-Zn extraction ratio twice the value obtained with T. ferrooxidans. The ore-adapted T. ferrooxidans started solubilizing Cu and Zn without a lag period. The ore-adapted T. thiooxidans extracted Cu as well as T. ferrooxidans, but the extraction of Zn or Fe was still much slower in the low-phosphate medium, while in the high-phosphate medium it approached the value obtained with T. ferrooxidans. A high Cu-Zn extraction ratio of 0. 34 was obtained with T. thiooxidans in the low-phosphate medium.

引用

页码：110 / 116

页数：7

共 8 条

[1]

Berry VK., 1978, METALLURGICAL APPLIC, P103

[2]

Ehrlich H.L., 1981, GEOMICROBIOLOGY

[3]

HUTCHINS SR, 1986, ANNU REV MICROBIOL, V40, P311, DOI 10.1146/annurev.mi.40.100186.001523

[4]

Karavaiko GI, 1985, MICROBIOLOGICAL PROC