Overvıew of Bıoleachıng

Mabel Keke *

Department of Chemical Engineering, Delta State University of Science and Technology, Ozoro, Nigeria.

Ikechukwu A. Nnanwube

Department of Chemical Engineering, Madonna University, Akpugo, Nigeria.

Okechukwu D. Onukwuli

Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria.

*Author to whom correspondence should be addressed.


Aims: This study aims to present a comprehensive analysis of bioleaching, the fundamental idea behind it, the emergence of microbes and the bioleaching approaches.

Study Design: To do this, this research has been developed on a foundation of significant topics. The researcher used a quantitative approach in this particular investigation. The quantitative study is presented in tables that list the bioleaching processes and efficient microorganisms.

Place and Duration of Study: This study was carried out in Chemical Engineering department, Delta State University of Science and Technology, Ozoro, Nigeria.

Methodology: The researcher decided on a combination methodology because of the context of the present investigation. The approach of data collection and analysis employing qualitative as well as quantitative methodologies is known as combined research design.

Results: The lengthy training period of microorganisms at the laboratory scale, which is significantly impacted by other experimental variables, is one of the key difficulties faced by the bioleaching process. Therefore, the key to increasing the simplicity of bioleaching technologies in large-scale industrial production is to enhance the bioleaching microorganism’s currently in use so that they can continue to be highly active under more complicated reaction conditions. Regarding the microbial problem, biological leaching piles of just a few genes in the offspring of acidophilic microorganisms have been documented. Although some bacterial genomes from acid mine drainage and acidic environments have been used to create replacements, these models cannot fully depict the potential for leaching; in addition, it can be difficult for researchers to obtain samples of microbes from actual production, making further research challenging.

Conclusion: In the years to come, microbial use for waste treatment and mineral processing will continue to gain importance on a global scale. The need to process ores with trace amounts of copper and gold, the potential for recycling waste spoils and tailings, financial limitations, and potential legislative changes on the environmental impact of more conventional approaches like hydrometallurgy will all contribute to this. The employment of chemolithotrophic and heterotrophic bacteria will be a significant addition, boosting the leaching rates and metal recoveries and enabling the treatment of resistant ores like chalcopyrite.

Keywords: Bioleaching, acidithiobacillus ferrooxidans, thiobacillus ferrooxidans, heterotrophic microorganisms, metal sulphide

How to Cite

Keke , M., Nnanwube , I. A., & Onukwuli , O. D. (2023). Overvıew of Bıoleachıng. Journal of Engineering Research and Reports, 25(2), 108–129. https://doi.org/10.9734/jerr/2023/v25i2884


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