Biodesulfurization of sulfide wastewater for elemental sulfur recovery by isolated Halothiobacillus neapolitanus in an internal airlift loop reactor

Feng, Shoushuai; Lin, Xu; Tong, Yanjun; Huang, Xing; Yang, Hailin

doi:10.1016/j.biortech.2018.05.079

Cited by 37 publications

(10 citation statements)

References 34 publications

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“…using polyaluminium chloride. Feng et al 53 . used an internal airlift loop reactor enriched with Halothiobacillus ‐type SOB with flocculant‐producer Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

Evaluating and modeling biological sulfur production in the treatment of sulfide‐laden streams containing ammonium

Cueto

Mora

Gabriel

2020

J of Chemical Tech & Biotech

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BACKGROUNDBiological treatment of effluents containing H2S and ammonium are of great interest as both can trigger serious environmental problems when disposed of. The aim of this study was to optimize the production of biosulfur from the partial oxidation of sulfide in sulfide‐ and ammonium‐containing streams. Biological performance was evaluated under various aerating conditions and key kinetic parameters were adjusted based on an existing mathematical model adapted to this system.RESULTSAn optimal conversion of sulfide to S0 of 86% (w/w) was found at an oxidation–reduction potential (ORP) of −380 ± 10 mV and at an O2/S2− molar ratio of 0.44. Partial nitrification was observed at ORP higher than −200 mV and in excess of oxygen supply. Sulfide‐oxidizing bacteria (SOB) outcompeted ammonium‐oxidizing bacteria (AOB) in the competition for dissolved oxygen. In a modeling effort, the maximum specific growth rate for SOB, the sulfur shrinking kinetic constant, the maximum specific growth rate for AOB and the AOB oxygen half‐saturation constant were adjusted to 10.1 day−1, 0.3 mg2/3 VSS mg−2/3 S, 1.75 day−1 and 1.5 mg L−1, respectively, during model calibration.CONCLUSIONSOptimal S0 production was found under limiting O2 conditions in which AOB were not able to outcompete SOB. The mathematical model described satisfactorily the experimental profiles for ammonium, nitrite, sulfide and sulfate as a function of the aeration flow rate. © 2020 Society of Chemical Industry (SCI)

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“…using polyaluminium chloride. Feng et al 53 . used an internal airlift loop reactor enriched with Halothiobacillus ‐type SOB with flocculant‐producer Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

Evaluating and modeling biological sulfur production in the treatment of sulfide‐laden streams containing ammonium

Cueto

Mora

Gabriel

2020

J of Chemical Tech & Biotech

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“…The MFC1 only had one dominant genus Halothiobacillus , which is a gram-negative chemoautotroph bacterial species. Halothiobacillus possesses a high salt tolerance, which can be used to reduce sulfur as an electron donor. , Halothiobacillus is also found in microbial electrolytic cells with simultaneous sulfide removal and hydrogen production . In MFC1, only sulfide was fed into the system; hence, the dominant genus Halothiobacillus was involved with sulfide removal.…”

Section: Discussionmentioning

confidence: 99%

Microbial Fuel Cells Simultaneously Treating Sulfide and Nitrate under Different Influent Sulfide to Nitrate Molar Ratios

et al. 2020

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Microbial fuel cells (MFCs), capable of concurrently treating sulfide and nitrate while generating electricity, were evaluated with various influent sulfide to nitrate molar ratios (S:N ratios). All MFCs displayed a good substrate removal capacity regardless of the S:N ratio (i.e., 5:0, 5:1, 5:2, and 5:3) and produced nitrogen gas, elemental sulfur, and sulfate as major products, while low S:N ratios mediated high sulfate conversion. By setting the S:N ratio to 5:2, the electricity generation was maximized, which was consistent with cyclic voltammetry (CV) curves. Through high-throughput sequencing, the taxonomic distribution of a microbial community in suspended sludge was analyzed; the diversity indices and a principal component analysis (PCA) suggest that the S:N ratios may affect the microbial community in MFCs. However, a Pearson correlation analysis infers that the S:N ratios do not have a significant impact on the richness and diversity of the microbial communities in MFCs involved in the simultaneous treatment of sulfide and nitrate (p > 0.05).

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“…The product of sulfate reduction, hydrogen sulfide, as well as other reduced sulfur compounds and elemental sulfur, can be oxidized by sulfur-oxidizing bacteria (SOB) [85][86][87][88]. Two known lineages of SOB were identified.…”

Section: Sulfur Cyclementioning

confidence: 99%

Microbial Communities Involved in Methane, Sulfur, and Nitrogen Cycling in the Sediments of the Barents Sea

et al. 2021

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A combination of physicochemical and radiotracer analysis, high-throughput sequencing of the 16S rRNA, and particulate methane monooxygenase subunit A (pmoA) genes was used to link a microbial community profile with methane, sulfur, and nitrogen cycling processes. The objects of study were surface sediments sampled at five stations in the northern part of the Barents Sea. The methane content in the upper layers (0–5 cm) ranged from 0.2 to 2.4 µM and increased with depth (16–19 cm) to 9.5 µM. The rate of methane oxidation in the oxic upper layers varied from 2 to 23 nmol CH4 L−1 day−1 and decreased to 0.3 nmol L−1 day−1 in the anoxic zone at a depth of 16–19 cm. Sulfate reduction rates were much higher, from 0.3 to 2.8 µmol L−1 day−1. In the surface sediments, ammonia-oxidizing Nitrosopumilaceae were abundant; the subsequent oxidation of nitrite to nitrate can be carried out by Nitrospira sp. Aerobic methane oxidation could be performed by uncultured deep-sea cluster 3 of gamma-proteobacterial methanotrophs. Undetectable low levels of methanogenesis were consistent with a near complete absence of methanogens. Anaerobic methane oxidation in the deeper sediments was likely performed by ANME-2a-2b and ANME-2c archaea in consortium with sulfate-reducing Desulfobacterota. Sulfide can be oxidized by nitrate-reducing Sulfurovum sp. Thus, the sulfur cycle was linked with the anaerobic oxidation of methane and the nitrogen cycle, which included the oxidation of ammonium to nitrate in the oxic zone and denitrification coupled to the oxidation of sulfide in the deeper sediments. Methane concentrations and rates of microbial biogeochemical processes in sediments in the northern part of the Barents Sea were noticeably higher than in oligotrophic areas of the Arctic Ocean, indicating that an increase in methane concentration significantly activates microbial processes.

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Biodesulfurization of sulfide wastewater for elemental sulfur recovery by isolated Halothiobacillus neapolitanus in an internal airlift loop reactor

Cited by 37 publications

References 34 publications

Evaluating and modeling biological sulfur production in the treatment of sulfide‐laden streams containing ammonium

Evaluating and modeling biological sulfur production in the treatment of sulfide‐laden streams containing ammonium

Microbial Fuel Cells Simultaneously Treating Sulfide and Nitrate under Different Influent Sulfide to Nitrate Molar Ratios

Microbial Communities Involved in Methane, Sulfur, and Nitrogen Cycling in the Sediments of the Barents Sea

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