SPHALERITE OXIDATION BY THIOBACILLUS-FERROOXIDANS AND THIOBACILLUS THIOOXIDANS

被引：45

作者：

GARCIA, O ^{[1
]}

BIGHAM, JM ^{[1
]}

TUOVINEN, OH ^{[1
]}

机构：

[1] OHIO STATE UNIV, SCH NAT RESOURCES, COLUMBUS, OH 43210 USA

来源：

CANADIAN JOURNAL OF MICROBIOLOGY | 1995年 / 41卷 / 07期

关键词：

BIOLEACHING OF SPHALERITE; SPHALERITE OXIDATION; THIOBACILLUS FERROOXIDANS; THIOBACILLUS THIOOXIDANS; ZINC SULFIDE OXIDATION;

D O I：

10.1139/m95-077

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Sphalerite (ZnS) oxidation was monitored in Thiobacillus ferrooxidnns and Thiobacillus thiooxidans cultures and in abiotic controls by X-ray diffraction (XRD) analysis of solid phases and by chemical analysis of solution composition. X-ray diffraction data revealed no solid-phase reaction products in unsupplemented sphalerite media, whereas minor amounts of S-0 accumulated in FeSO4-amended sphalerite media with or without T. ferrooxidans inoculum. Jarosite ((K,Na,H3O,NH4)Fe-3(SO4)(2)(OH)(6)) also precipitated in the amended T. ferrooxidans cultures. When sphalerite media inoculated with T. thiooxidans were amended with S-0, acid production was enhanced, decreasing the pH to 1.1, but Zn dissolution was not accelerated. By comparison with T. thiooxidans, T. ferroxidans was more efficient in the oxidation of sphalerite.

引用

页码：578 / 584

页数：7

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