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Bioleaching of chalcopyrite

Woranart Jonglertjunya, Neil Rowson

2003enbioleachingchalcopyritecopperthiobacillusphd

Abstract

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This research is concerned with the bioleaching of chalcopyrite (CuFeS2) by Thiobacillus ferrooxidans (ATCC 19859), conducted in shake flasks and a stirred tank bioreactor. The objective was to study the effects of factors such as initial pH, particle size, pulp density, and shake flask speed on bioleaching efficiency. Methodology included characterizing the bacterial adsorption on chalcopyrite and proposing a mechanism for copper dissolution through various experimental approaches. Results indicated a positive correlation between copper dissolution rate and bacterial growth, emphasizing the role of bacterial attachment. However, challenges arose when attempting to leach copper from low-grade ores, as the presence of carbonates neutralized the environment necessary for the acidophilic bacteria to thrive. This study contributes to understanding the complexities of bioleaching, particularly regarding the interactions between bacteria and mineral surfaces, with implications for the extraction of copper from various sources.

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Cite This Work

@article{77d9e92a-a03f-4feb-9820-d96b8b3b4d2b,
  title={Bioleaching of chalcopyrite},
  author={Woranart Jonglertjunya and Neil Rowson},
  year={2003},
  language={en}
}
TY  - JOUR
TI  - Bioleaching of chalcopyrite
AU  - Woranart Jonglertjunya
AU  - Neil Rowson
PY  - 2003
LA  - en
ER  -

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