Anaerobic reductive bioleaching of manganese ores
Abstract
The increasing demand of manganese in the industries and various hindrances in its production from low grade ores by conventional method has made it imperative for researchers around the world to develop a method of manganese extraction from low grade ores that is both environment-friendly and economical. Bioleaching has shown significant potential in manganese extraction and efficiencies of extraction have been found to be 70–98% with the help of various bacteria and fungi. Here, this study focuses on extraction of manganese with the help of mixed bacterial strains that have been collected from their natural anaerobic environment where manganese reducing activity was evident. The extraction of manganese from reagent grade manganese dioxide and high grade manganese ore has been studied over 180 days in an anaerobic environment at room temperature and pH around 5, without the addition of any mineral acids. Highest concentrations of dissolved manganese have been found to be 928.58 mg Mn/L for reagent grade manganese dioxide and 864.54 mg Mn/L for ore grade manganese, corresponding to 650 mg and 400 mg of cumulative manganese, respectively.
- Authors:
-
- Michigan Technological Univ., Houghton, MI (United States)
- Publication Date:
- Research Org.:
- Michigan Technological Univ., Houghton, MI (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1977453
- Alternate Identifier(s):
- OSTI ID: 1819383
- Grant/Contract Number:
- AR0001336
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Minerals Engineering
- Additional Journal Information:
- Journal Volume: 173; Journal ID: ISSN 0892-6875
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Bioleaching; Anaerobic reduction; Manganese; Low grade; Sustainable
Citation Formats
Sharma, Neha, and Eisele, Timothy C. Anaerobic reductive bioleaching of manganese ores. United States: N. p., 2021.
Web. doi:10.1016/j.mineng.2021.107152.
Sharma, Neha, & Eisele, Timothy C. Anaerobic reductive bioleaching of manganese ores. United States. https://doi.org/10.1016/j.mineng.2021.107152
Sharma, Neha, and Eisele, Timothy C. Thu .
"Anaerobic reductive bioleaching of manganese ores". United States. https://doi.org/10.1016/j.mineng.2021.107152. https://www.osti.gov/servlets/purl/1977453.
@article{osti_1977453,
title = {Anaerobic reductive bioleaching of manganese ores},
author = {Sharma, Neha and Eisele, Timothy C.},
abstractNote = {The increasing demand of manganese in the industries and various hindrances in its production from low grade ores by conventional method has made it imperative for researchers around the world to develop a method of manganese extraction from low grade ores that is both environment-friendly and economical. Bioleaching has shown significant potential in manganese extraction and efficiencies of extraction have been found to be 70–98% with the help of various bacteria and fungi. Here, this study focuses on extraction of manganese with the help of mixed bacterial strains that have been collected from their natural anaerobic environment where manganese reducing activity was evident. The extraction of manganese from reagent grade manganese dioxide and high grade manganese ore has been studied over 180 days in an anaerobic environment at room temperature and pH around 5, without the addition of any mineral acids. Highest concentrations of dissolved manganese have been found to be 928.58 mg Mn/L for reagent grade manganese dioxide and 864.54 mg Mn/L for ore grade manganese, corresponding to 650 mg and 400 mg of cumulative manganese, respectively.},
doi = {10.1016/j.mineng.2021.107152},
journal = {Minerals Engineering},
number = ,
volume = 173,
place = {United States},
year = {Thu Sep 09 00:00:00 EDT 2021},
month = {Thu Sep 09 00:00:00 EDT 2021}
}
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