Bio-oxidation and bio-cyanidation of refractory mineral ores for gold extraction: a review

Karthikeyan, Obulisamy P., Rajasekar, Aruliah, and Balasubramanian, Rajasekhar (2015) Bio-oxidation and bio-cyanidation of refractory mineral ores for gold extraction: a review. Critical Reviews in Environmental Science and Technology, 45. pp. 1611-1643.

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DOI: 10.1080/10643389.2014.966423

View at Publisher Website: http://dx.doi.org/10.1080/10643389.2014....

Abstract

Bioleaching has emerged as a green technology with promising applications in mining industries in the context of recovery of precious metals from mineral ores. This review synthesizes the current knowledge available in the bioleaching of gold (Au) from ores by bringing together historical developments and recent endeavors. In addition, the role of the microbial community in the bio-oxidation of refractory ores for removal of base metal impurities and in the recovery of Au based on bio-cynidation is reviewed. The article also addresses the future research directions in the bioleaching of Au in order to make further advances toward practical industrial applications.


Item ID:	35931
Item Type:	Article (Research - C1)
ISSN:	1547-6537
Keywords:	refractory mineral ore, gold, bio-leaching, bio-oxidation, bio-cyanidation, bioreactors
Funders:	Singapore Economic Development Board (EDB) and Minerals, Metals and Materials Technology Centre (M3TC), Faculty of Engineering, National University of Singapore
Date Deposited:	29 Oct 2014 03:57
FoR Codes:	09 ENGINEERING > 0907 Environmental Engineering > 090703 Environmental Technologies @ 50% 09 ENGINEERING > 0914 Resources Engineering and Extractive Metallurgy > 091404 Mineral Processing/Beneficiation @ 50%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970110 Expanding Knowledge in Technology @ 20% 84 MINERAL RESOURCES (excl. Energy Resources) > 8403 First Stage Treatment of Ores and Minerals > 840303 Beneficiation or Dressing of Iron Ores @ 30% 84 MINERAL RESOURCES (excl. Energy Resources) > 8402 Primary Mining and Extraction Processes of Mineral Resources > 840205 Mining and Extraction of Precious (Noble) Metal Ores @ 50%
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