LAPSE

LAPSE:2019.1242
Published Article
LAPSE:2019.1242
Effects of Conventional Flotation Frothers on the Population of Mesophilic Microorganisms in Different Cultures
Mohammad Jafari, Mehdi Golzadeh, Sied Ziaedin Shafaei, Hadi Abdollahi, Mahdi Gharabaghi, Saeed Chehreh Chelgani
December 3, 2019
Bioleaching is an environment-friendly and low-investment process for the extraction of metals from flotation concentrate. Surfactants such as collectors and frothers are widely used in the flotation process. These chemical reagents may have inhibitory effects on the activity of microorganisms through a bioleaching process; however, there is no report indicating influences of reagents on the activity of microorganisms in the mixed culture which is mostly used in the industry. In this investigation, influences of typical flotation frothers (methyl isobutyl carbinol and pine oil) in different concentrations (0.01, 0.10, and 1.00 g/L) were examined on activates of bacteria in the mesophilic mixed culture (Acidithiobacillus ferrooxidans, Leptospirillum ferrooxidans, and Acidithiobacillus thiooxidans). For comparison purposes, experiments were repeated by pure cultures of Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans in the same conditions. Results indicated that increasing the dosage of frothers has a negative correlation with bacteria activities while the mixed culture showed a lower sensitivity to the toxicity of these frothers in comparison with examined pure cultures. Outcomes showed the toxicity of Pine oil is lower than methyl isobutyl carbinol (MIBC). These results can be used for designing flotation separation procedures and to produce cleaner products for bio extraction of metals.
Keywords
bioleaching, flotation, frother, Machine Learning, mixed culture
Subject
Suggested Citation
Jafari M, Golzadeh M, Shafaei SZ, Abdollahi H, Gharabaghi M, Chehreh Chelgani S. Effects of Conventional Flotation Frothers on the Population of Mesophilic Microorganisms in Different Cultures. (2019). LAPSE:2019.1242
Author Affiliations
Jafari M: School of Mining Engineering, College of Engineering, University of Tehran, Tehran 16846-13114, Iran [ORCID]
Golzadeh M: Software Engineering Lab, University of Mons, 7000 Mons, Belgium [ORCID]
Shafaei SZ: School of Mining Engineering, College of Engineering, University of Tehran, Tehran 16846-13114, Iran
Abdollahi H: School of Mining Engineering, College of Engineering, University of Tehran, Tehran 16846-13114, Iran [ORCID]
Gharabaghi M: School of Mining Engineering, College of Engineering, University of Tehran, Tehran 16846-13114, Iran
Chehreh Chelgani S: Minerals and Metallurgical Engineering, Department of Civil, Environmental and Natural Resources Engineering, LuleƄ University of Technology, SE-971 87 LuleƄ, Sweden [ORCID]
Journal Name
Processes
Volume
7
Issue
10
Article Number
E653
Year
2019
Publication Date
2019-09-25
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr7100653, Publication Type: Journal Article
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LAPSE:2019.1242
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doi:10.3390/pr7100653
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Dec 3, 2019
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CC BY 4.0
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Dec 3, 2019
 
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Dec 3, 2019
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Original Submitter
Calvin Tsay
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