African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Effect of amino acids on bioleaching of chalcopyrite ore by Thiobacillus ferrooxidans

  B. Ghosh1, 2, B. P. Mukhopadhyay1* and H. R. Bairagya1
  1Department of Chemistry, National Institute of Technology, Durgapur, M.G. Avenue, Durgapur-713209, India. 2Department of Chemistry, Dr B.C.Roy Engineering College, Durgapur-713206, India.  
Email: [email protected]

  •  Accepted: 04 November 2011
  •  Published: 26 January 2012

Abstract

 

Amino acids seem to play a major role during bioleaching of chalcopyrite ore byThiobacillus ferrooxidans. Efficiency of microbial leaching of chalcopyrite by T. ferrooxidans was investigated in the presence of L-aspartic acid, L-glutamic acid, L-histidine and L-serine. The bioleaching of copper ion (Cu2+) from the low grade ore increased significantly in the presence of L-serine. Although the leaching was increased in the presence of L-aspartic acid, L-glutamic acid and L-histidine during the initial period, it was observed to decrease after a few days. However, in the L-serine supplemented medium, a steady state of leaching was maintained for a reasonable time.

 

Key words: Thiobacillus ferrooxidans, chalcopyrite, amino acid, bioleaching.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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