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Electricity generation from an inorganic sulfur compound containing mining wastewater by acidophilic microorganisms
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Cntr Ecol & Evolut Microbial Model Syst EEMiS)
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0003-0021-2452
Wageningen Univ, Netherlands ; Wetsus, Netherlands.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)
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2016 (English)In: Research in Microbiology, ISSN 0923-2508, E-ISSN 1769-7123, Vol. 167, no 7, p. 568-575Article in journal (Refereed) Published
Abstract [en]

Sulfide mineral processing often produces large quantities of wastewaters containing acid-generating inorganic sulfur compounds. If released untreated, these wastewaters can cause catastrophic environmental damage. In this study, microbial fuel cells were inoculated with acidophilic microorganisms to investigate whether inorganic sulfur compound oxidation can generate an electrical current. Cyclic voltammetry suggested that acidophilic microorganisms mediated electron transfer to the anode, and that electricity generation was catalyzed by microorganisms. A cation exchange membrane microbial fuel cell, fed with artificial wastewater containing tetrathionate as electron donor, reached a maximum whole cell voltage of 72 +/- 9 mV. Stepwise replacement of the artificial anolyte with real mining process wastewater had no adverse effect on bioelectrochemical performance and generated a maximum voltage of 105 +/- 42 mV. 16S rRNA gene sequencing of the microbial consortia resulted in sequences that aligned within the genera Thermoplasma, Ferroplasma, Leptospirillum, Sulfobacillus and Acidithiobacillus. This study opens up possibilities to bioremediate mining wastewater using microbial fuel cell technology. (C) 2016 The Authors. Published by Elsevier Masson SAS on behalf of Institut Pasteur.

Place, publisher, year, edition, pages
2016. Vol. 167, no 7, p. 568-575
Keywords [en]
Microbial fuel cell, Electricity generation, Acidophile, Mining, Wastewater
National Category
Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-57087DOI: 10.1016/j.resmic.2016.04.010ISI: 000383293900005PubMedID: 27155452Scopus ID: 2-s2.0-84974796855OAI: oai:DiVA.org:lnu-57087DiVA, id: diva2:1033443
Available from: 2016-10-06 Created: 2016-10-06 Last updated: 2017-11-30Bibliographically approved

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Ni, GaofengChristel, StephanWong, Zhen LimDopson, Mark

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