Screening and characterization of mixotrophic sulfide oxidizing bacteria for odorous surface water bioremediation

Sun, Zhuqiu; Pang, Bowen; Xi, Jinying; Hu, Hong-Ying

doi:10.1016/j.biortech.2019.121721

Cited by 37 publications

(6 citation statements)

References 31 publications

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“…and 20% mixotrophic Pseudomonas sp., both isolated from activated sludge, was found to adapt easily to environments with low dissolved oxygen and high organics concentrations. The mixture was recently proven to efficiently remove ammonia-nitrogen and the released H2S in an odorous river (Sun et al, 2019). It will be interesting to see how many members of ammonia-oxidizing bacteria exhibit mixotrophic lifestyle for energy metabolism.…”

Section: Mixotrophic Bacteria Containing No Photosynthetic Pigmentsmentioning

confidence: 99%

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Huang

Xing

Zhou

et al. 2021

Appl Microbiol Biotechnol

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Mixotrophic bacteria provide a desirable alternative to the use of classical heterotrophic or chemolithoautotrophic bacteria in environmental technology, particularly under limiting nutrients conditions. Their bi-modal ability of adapting to inorganic or organic carbon feed and sulfur, nitrogen or even heavy metals stress conditions are attractive features to achieve efficient bacterial activity and favorable operation conditions for the environmental detoxification or remediation of contaminated waste and wastewater. This review provides an overview on the state of the art and summarizes the metabolic traits of the most promising and emerging non-model mixotrophic bacteria for the environmental detoxification of contaminated wastewater and waste containing excess amounts of limiting nutrients. Although mixotrophic bacteria usually function with low organic carbon sources, the unusual capabilities of mixotrophic electroactive exoelectrogens and electrotrophs in bioelectrochemical systems and in microbial electrosynthesis for accelerating simultaneous metabolism of inorganic or organic C and N, S or heavy metals are reviewed. The identification of the mixotrophic properties of electroactive bacteria and their capability to drive mono or bidirectional electron transfer processes are highly exciting and promising aspects. These aspects provide an appealing potential for unearthing new mixotrophic exoelectrogens and electrotrophs, and thus inspire next generation of microbial electrochemical technology and mixotrophic bacterial metabolic engineering.

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Section: Mixotrophic Bacteria Containing No Photosynthetic Pigmentsmentioning

confidence: 99%

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Huang

Xing

Zhou

et al. 2021

Appl Microbiol Biotechnol

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“…The genus Pseudomonas is a common sulfur-oxidizing bacterium that possesses strong adaptability to environments with low dissolved oxygen and high concentrations of organic substances and shows excellent performance for odorous river bioremediation [ 13 ]. Utilizing oxygen as the electron acceptor, Pseudomonas can remove high concentrations of H 2 S effectively in biogas by biotricking filters [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Complete genome sequence of Pseudomonas stutzeri S116 owning bifunctional catalysis provides insights into affecting performance of microbial fuel cells

et al. 2022

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Background Pseudomonas stutzeri S116 is a sulfur-oxidizing bacteria isolated from marine sludge. It exhibited excellent electricity generation as bioanode and biocathode applied in microbial fuel cells (MFCs). Complete genome sequencing of P. stutzeri and cyclic voltammetry method were performed to reveal its mechanism in microbial fuel cells system. Results This study indicated that the MFCs generated a maximum output voltage of 254.2 mV and 226.0 mV, and maximum power density of 765 mW/m2 and 656.6 mW/m2 respectively. Complete genome sequencing of P. stutzeri S116 was performed to indicate that most function genes showed high similarities with P. stutzeri, and its primary annotations were associated with energy production and conversion (6.84%), amino acid transport and metabolism (6.82%) and inorganic ion transport and metabolism (6.77%). Homology of 36 genes involved in oxidative phosphorylation was detected, which suggests the strain S116 possesses an integrated electron transport chain. Additionally, many genes encoding pilus-assembly proteins and redox mediators (riboflavin and phenazine) were detected in the databases. Thiosulfate oxidization and dissimilatory nitrate reduction were annotated in the sulfur metabolism pathway and nitrogen metabolism pathway, respectively. Gene function analysis and cyclic voltammetry indicated that P. stutzeri probably possesses cellular machinery such as cytochrome c and redox mediators and can perform extracellular electron transfer and produce electricity in MFCs. Conclusion The redox mediators secreted by P. stutzeri S116 were probably responsible for performance of MFCs. The critical genes and metabolic pathways involved in thiosulfate oxide and nitrate reduction were detected, which indicated that the strain can treat wastewater containing sulfide and nitrite efficiently.

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“…With the increase in time, NRB had an absolute advantage over other bacteria, and sulfide-oxidizing bacteria were apparently reduced. The sulfide-oxidizing bacteria played important roles in eliminating H 2 S, which could oxidize sulfide into elemental sulfur to inhibit the growth of SRB and increase the methane production potential Mixotrophic and halophile Pseudomonas affiliated to SRB that could remove sulfide efficiently. , …”

Section: Resultsmentioning

confidence: 99%

Dynamics of Microbial Community and Removal of Hydrogen Sulfide (H₂S) Using a Bio-Inhibitor and Its Application under the Oil Reservoir Condition

Deng

Wang

et al. 2022

Energy Fuels

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Hydrogen sulfide (H 2 S) is a toxic gas widespread in injected water of secondary oil recovery, having disadvantages of serious corrosion equipment, health risks, and higher operational costs. This study focused on the field application with nitrate and nitrite injection, which has been less examined in previous studies. A bioinhibitor (400 mg/L nitrate + 300 mg/L nitrite) was reinserted into the water of the M71 oilfield (Jianghan Basin, China) with serious souring. The concentration of H 2 S decreased by 83% from 30 mg/L to less than 5 mg/L; the nitrate-reducing bacteria (NRB) counts increased from 10 to 100 cfu/mL, and the sulfate-reducing bacteria (SRB) counts remained at low numbers (0 cfu/mL). The dominant genera in the injected water in the absence of the bio-inhibitor were Desulfuromonas, Halanaerobium, and Desulfovibrio. NRB-related Halomonas and Marinobacter and sulfide-oxidizing bacteria of Halothiobacillus and Pseudomonas were activated through competing with SRB electron donors, and sulfide-oxidizing bacteria oxidized H 2 S to S 0 or SO 4 2− to suppress SRB when the bio-inhibitor was continuously added. The nitrite inhibited SRB metabolism through suppressing sulfite reductase activity. These findings indicated that the addition of the bio-inhibitor could remove H 2 S efficiency in injected water, thereby causing water reinjection in the oil reservoir. As a result, cost-effective treatments for souring control are achieved.

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Screening and characterization of mixotrophic sulfide oxidizing bacteria for odorous surface water bioremediation

Cited by 37 publications

References 31 publications

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Complete genome sequence of Pseudomonas stutzeri S116 owning bifunctional catalysis provides insights into affecting performance of microbial fuel cells

Dynamics of Microbial Community and Removal of Hydrogen Sulfide (H₂S) Using a Bio-Inhibitor and Its Application under the Oil Reservoir Condition

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Screening and characterization of mixotrophic sulfide oxidizing bacteria for odorous surface water bioremediation

Cited by 37 publications

References 31 publications

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Mixotrophic bacteria for environmental detoxification of contaminated waste and wastewater

Complete genome sequence of Pseudomonas stutzeri S116 owning bifunctional catalysis provides insights into affecting performance of microbial fuel cells

Dynamics of Microbial Community and Removal of Hydrogen Sulfide (H2S) Using a Bio-Inhibitor and Its Application under the Oil Reservoir Condition

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Product

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Dynamics of Microbial Community and Removal of Hydrogen Sulfide (H₂S) Using a Bio-Inhibitor and Its Application under the Oil Reservoir Condition