Assessing the effectiveness of a biological recovery of nickel from tailing dumps

被引：3

作者：

Fosso-Kankeu, E. ^{[1
]}

Mulaba-Bafubiandi, A. F. ^{[1
]}

Mamba, B. B. ^{[2
]}

Barnard, T. G. ^{[3
]}

机构：

[1] Univ Johannesburg, Fac Engn & Built Environm, Dept Extract Met, Minerals Proc & Technol Res Grp, ZA-2050 Johannesburg, South Africa

[2] Univ Johannesburg, Fac Sci, Dept Chem Technol, Doornfontein, South Africa

[3] Univ Johannesburg, Fac Hlth Sci, Water & Hlth Res Unit, Doornfontein, South Africa

来源：

MINERALS ENGINEERING | 2011年 / 24卷 / 05期

关键词：

Nickel mobilization; Bacillus subtilis; Sulfuric acid; Tailing dumps; Mining ore; Monod-type kinetic;

D O I：

10.1016/j.mineng.2010.11.007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The mobilization of nickel from sulphide minerals using sulfuric acid and Bacillus subtilis was examined. The influences of the concentration of acid and bacteria as well as reaction time were considered. Recovery of nickel by interrupted bioreaction was relatively low and exhibited two phases: an active phase (up to 6 h exposure) and a latent phase (over 6 h exposures) reflecting bacterial inhibition by nickel overtime. Nickel was quickly recovered from tailings (20 ppm/h) than from ore (8.07 ppm/h) with biological and acidic methods. It therefore appears that optimum nickel mobilization with B. subtilis will occur in the active phase. Biological method has environmental advantage and thus appropriate for tailing dumps management. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：470 / 472

页数：3

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