Hydrogen sulfide oxidation in novel Horizontal-Flow Biofilm Reactors dominated by an <i>Acidithiobacillus</i> and a <i>Thiobacillus</i> species

Gerrity, Seán; Kennelly, Colm; Clifford, Eoghan; Collins, Gavin

doi:10.1080/09593330.2016.1147609

Cited by 17 publications

(11 citation statements)

References 52 publications

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“…Biofiltration is performed in a multi-phase system in which the contaminated gas is dissolved and adsorbed on a biofilm and then degraded by microorganisms that are immobilized on a packing material forming a thin layer (biofilm). The packing material in the biofilter may be either natural or synthetic and must fulfil the requirements of high surface area, high permeability, and high adsorption capacity [13][14][15]. A fifth group of technologies consists of adsorption on silica gels, adsorbent rocks (e.g., moisturized pumices, dolomite and limestones) and minerals (e.g., zeolites, clays and maghemite) [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Malferrari

Castellini

Bernini

et al. 2018

Microporous and Mesoporous Materials

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Section: Introductionmentioning

confidence: 99%

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Malferrari

Castellini

Bernini

et al. 2018

Microporous and Mesoporous Materials

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“…Biofiltration is often used in H 2 S removal from waste gas or waste water because of its effectiveness, low energy consumption and minimal by-product generation compared to chemical and physical treatments (Sorokin 1994 ). Researchers have tried different reactor designs, various packing materials and nutrients for biofiltration to achieve stable efficiency of H 2 S elimination (Ben Jaber et al 2016a , b ; Gerrity et al 2016 ; Li et al 2008 ). However, biofiltration is limited to the use of a few of chemolithotrophic sulfur-oxidizing bacteria, such as Thiobacillus spp., Acidithiobacillus spp.…”

Section: Introductionmentioning

confidence: 99%

“…A problem of using these sulfur-oxidizing bacteria is the production of sulfuric acid, leading to acidification of the liquid phase; however, the problem can be prevented if oxygen supply is restricted (Dolejs et al 2015 ; Janssen et al 1998 ; Sorokin et al 2008 ; Wang et al 2016 ). When acidification occurs, alkaline materials are added to neutralize the acidified liquid, which increases the cost (Gerrity et al 2016 ; Mora et al 2015 ; Pokorna and Zabranska 2015 ). Although some sulfide oxidizing bacteria such as Acidithiobacillus spp.…”

Section: Introductionmentioning

confidence: 99%

H2S biotreatment with sulfide-oxidizing heterotrophic bacteria

et al. 2018

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Many industrial activities produce H2S, which is toxic at high levels and odorous at even very low levels. Chemolithotrophic sulfur-oxidizing bacteria are often used in its remediation. Recently, we have reported that many heterotrophic bacteria can use sulfide:quinone oxidoreductase and persulfide dioxygenase to oxidize H2S to thiosulfate and sulfite. These bacteria may also potentially be used in H2S biotreatment. Here we report how various heterotrophic bacteria with these enzymes were cultured with organic compounds and the cells were able to rapidly oxidize H2S to zero-valence sulfur and thiosulfate, causing no apparent acidification. Some also converted the produced thiosulfate to tetrathionate. The rates of sulfide oxidation by some of the tested bacteria in suspension, ranging from 8 to 50 µmol min−1 g−1 of cell dry weight at pH 7.4, sufficient for H2S biotreatment. The immobilized bacteria removed H2S as efficiently as the bacteria in suspension, and the inclusion of Fe3O4 nanoparticles during immobilization resulted in increased efficiency for sulfide removal, in part due to chemical oxidation H2S by Fe3O4. Thus, heterotrophic bacteria may be used for H2S biotreatment under aerobic conditions.Electronic supplementary materialThe online version of this article (10.1007/s10532-018-9849-6) contains supplementary material, which is available to authorized users.

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“…SQR has been identified and studied in a variety of anaerobic phototrophic bacteria that use sulfide as the reducing power for photosynthesis and chemolithotrophic bacteria that oxidize sulfide to conserve energy for growth (14,15). Heterotrophic bacteria carrying SQR and PDO have been reported to oxidize sulfide (H 2 S, HS Ϫ , and S 2Ϫ ) to sulfite and thiosulfate (12), showing potential to be used in H 2 S bioremediation, which has been done with chemolithotrophic bacteria (16,17).…”

mentioning

confidence: 99%

Cytoplasmic Localization of Sulfide:Quinone Oxidoreductase and Persulfide Dioxygenase of Cupriavidus pinatubonensis JMP134

Gao

Liu

Xun

2017

Appl Environ Microbiol

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Heterotrophic bacteria have recently been reported to oxidize sulfide to sulfite and thiosulfate by using sulfide:quinone oxidoreductase (SQR) and persulfide dioxygenase (PDO). In chemolithotrophic bacteria, both SQR and PDO have been reported to function in the periplasmic space, with SQR as a peripheral membrane protein whose C terminus inserts into the cytoplasmic membrane and PDO as a soluble protein. JMP134, best known for its ability to degrade 2,4-dichlorophenoxyacetic acid and other aromatic pollutants, has a gene cluster of and encoding SQR (CpSQR) and CpPDO2. When cloned in , the enzymes are functional. Here we investigated whether they function in the periplasmic space or in the cytoplasm in heterotrophic bacteria. By using sequence analysis, biochemical detection, and green fluorescent protein (GFP)/PhoA fusion proteins, we found that CpSQR was located on the cytoplasmic side of the membrane and CpPDO2 was a soluble protein in the cytoplasm with a tendency to be peripherally located near the membrane. The location proximity of these proteins near the membrane in the cytoplasm may facilitate sulfide oxidation in heterotrophic bacteria. The information may guide the use of heterotrophic bacteria in bioremediation of organic pollutants as well as HS. Sulfide (HS, HS, and S), which is common in natural gas and wastewater, causes a serious malodor at low levels and is deadly at high levels. Microbial oxidation of sulfide is a valid bioremediation method, in which chemolithotrophic bacteria that use sulfide as the energy source are often used to remove sulfide. Heterotrophic bacteria with SQR and PDO have recently been reported to oxidize sulfide to sulfite and thiosulfate. JMP134 has been extensively characterized for its ability to degrade organic pollutants, and it also contains SQR and PDO. This paper shows the localization of SQR and PDO inside the cytoplasm in the vicinity of the membrane. The information may provide guidance for using heterotrophic bacteria in sulfide bioremediation.

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Hydrogen sulfide oxidation in novel Horizontal-Flow Biofilm Reactors dominated by an Acidithiobacillus and a Thiobacillus species

Cited by 17 publications

References 52 publications

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

Chemical trapping of gaseous H 2 S at high and low partial pressures by an iron complex immobilized inside the montmorillonite interlayer

H2S biotreatment with sulfide-oxidizing heterotrophic bacteria

Cytoplasmic Localization of Sulfide:Quinone Oxidoreductase and Persulfide Dioxygenase of Cupriavidus pinatubonensis JMP134

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