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Article

Microbiological Sulfide Removal—From Microorganism Isolation to Treatment of Industrial Effluent

1
Institute of Microbiology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
2
School of Minerals Processing and Bioengineering, Central South University, No. 932 Lushan South Road, Changsha 410083, China
3
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology in Krakow, A. Mickiewicza 30, 30-059 Krakow, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Anna H. Kaksonen
Microorganisms 2021, 9(3), 611; https://doi.org/10.3390/microorganisms9030611
Received: 14 February 2021 / Revised: 13 March 2021 / Accepted: 14 March 2021 / Published: 16 March 2021
(This article belongs to the Special Issue Microorganisms – Minerals Interactions)
Management of excessive aqueous sulfide is one of the most significant challenges of treating effluent after biological sulfate reduction for metal recovery from hydrometallurgical leachate. The main objective of this study was to characterize and verify the effectiveness of a sulfide-oxidizing bacterial (SOB) consortium isolated from post-mining wastes for sulfide removal from industrial leachate through elemental sulfur production. The isolated SOB has a complete sulfur-oxidizing metabolic system encoded by sox genes and is dominated by the Arcobacter genus. XRD analysis confirmed the presence of elemental sulfur in the collected sediment during cultivation of the SOB in synthetic medium under controlled physicochemical conditions. The growth yield after three days of cultivation reached ~2.34 gprotein/molsulfid, while approximately 84% of sulfide was transformed into elemental sulfur after 5 days of incubation. Verification of isolated SOB on the industrial effluent confirmed that it can be used for effective sulfide concentration reduction (~100% reduced from the initial 75.3 mg/L), but for complete leachate treatment (acceptable for discharged limits), bioaugmentation with other bacteria is required to ensure adequate reduction of chemical oxygen demand (COD). View Full-Text
Keywords: sulfide-oxidizing bacteria; sulfur production; sulfide depletion; sulfate reduction sulfide-oxidizing bacteria; sulfur production; sulfide depletion; sulfate reduction
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MDPI and ACS Style

Yang, Z.; Liu, Z.; Sklodowska, A.; Musialowski, M.; Bajda, T.; Yin, H.; Drewniak, L. Microbiological Sulfide Removal—From Microorganism Isolation to Treatment of Industrial Effluent. Microorganisms 2021, 9, 611. https://doi.org/10.3390/microorganisms9030611

AMA Style

Yang Z, Liu Z, Sklodowska A, Musialowski M, Bajda T, Yin H, Drewniak L. Microbiological Sulfide Removal—From Microorganism Isolation to Treatment of Industrial Effluent. Microorganisms. 2021; 9(3):611. https://doi.org/10.3390/microorganisms9030611

Chicago/Turabian Style

Yang, Zhendong, Zhenghua Liu, Aleksandra Sklodowska, Marcin Musialowski, Tomasz Bajda, Huaqun Yin, and Lukasz Drewniak. 2021. "Microbiological Sulfide Removal—From Microorganism Isolation to Treatment of Industrial Effluent" Microorganisms 9, no. 3: 611. https://doi.org/10.3390/microorganisms9030611

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