Extraction of nickel by microbial reduction of lateritic chromite overburden of Sukinda, India

被引：28

作者：

Behera, S. K. ^{[1
]}

Panda, S. K. ^{[2
]}

Pradhan, N. ^{[1
]}

Sukla, L. B. ^{[1
]}

Mishra, B. K. ^{[1
]}

机构：

[1] Inst Minerals & Mat Technol CSIR, Bhubaneswar 751013, Orissa, India

[2] Cent Tuber Crops Res Inst, Reg Ctr, Bhubaneswar 751019, Orissa, India

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 125卷

关键词：

Acidithiobacillus ferrooxidans; Reduction; Chromite overburden; Lateritic; Goethite; FERRIC IRON; KINETICS; SULFUR; MICROORGANISMS; DISSOLUTION; FERROOXIDANS; MECHANISMS; OXIDATION; RECOVERY; MINERALS;

D O I：

10.1016/j.biortech.2012.08.076

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Microbial extraction of nickel from lateritic chromite overburden (COB), Sukinda by Acidithiobacillus ferrooxidans has been investigated in this work. In anoxic environment, A. ferrooxidans reduced the ferric iron in goethite [Fe(O)OH] mineral of COB by using elemental sulphur as electron donor. Nickel embedded in the complex goethite matrix of COB was successfully recovered by cumulative action of sulphuric acid, generated by oxidation of elemental sulphur and reduction of ferric iron in goethite matrix by A. ferrooxidans. Forty one percent of the nickel present in COB was extracted in a 3 L scale bioreactor (pH of 1.8 +/- 0.05, temperature of 28 +/- 2 degrees C) maintained in anoxic environment. In contrast, only 11% of the nickel present in COB was extracted with continuous supply of air to the bioreactor keeping all the parameters unchanged. Kinetics study of anoxic microbial processing of COB revealed that the chemical reaction rate control model fits to the rate of nickel dissolution (R-2 = 0.975). (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：17 / 22

页数：6

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