Light-driven nitrous oxide production via autotrophic denitrification by self-photosensitized Thiobacillus denitrificans

Chen, Man; Zhou, Xiaofang; Yu, Yu-Qing; Liu, Xing; Zeng, Raymond J.; Zhou, Shungui; He, Zhen

doi:10.1016/j.envint.2019.03.045

Cited by 105 publications

(96 citation statements)

References 43 publications

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“…Considering that c-Cyts are critical for electron transfer [16,129], the accessibility of c-Cyts for photoelectron transfer requires more careful consideration and experimental investigation. In recent studies by Zhou et al [130][131][132][133], markedly higher transcription levels for c-Cyts in G. sulfurreducens and functional ferredoxin-dependent hydrogenase in Methanosarcina barkeri (M. barkeri) were all found in response to illuminated cultured systems. This suggests that a c-Cyts-mediated mechanism was also important in the photoelectron transfer pathway in a majority of electrogenesis strains.…”

Section: Mineral Photoelectrons Participate In Microbial Extracellulamentioning

confidence: 96%

“…Due to interactions between enhanced electrical conductivity and mineral photoelectrons, the produced synergistic effects are conducive to nonphototrophic microorganisms that gain light energy through semiconductive CdS NPs, thereby improving the ICP-MR performance in biohybrids. Outer membrane-bound cytochromes of engineered biohybrids were shown to participate in photoelectron transport by acting as the terminal reductase [131][132][133], indicating good biocompatibility of CdS NPs for biohybrid construction. Thus, biohybrids constructed through in situ grafting of nanosized semiconductive mineral Table 3 Selected applications of illuminated engineered biohybrids by superficial precipitation of semiconductive minerals onto nonphototrophic microorganisms.…”

Section: Enhanced Photoelectric Performance In Engineered Nonphototromentioning

confidence: 99%

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Recent advances in the roles of minerals for enhanced microbial extracellular electron transfer

Dong

Chen

Yan

et al. 2020

Renewable and Sustainable Energy Reviews

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Minerals are ubiquitous in the natural environment and have close contact with microorganisms. In various scenarios, microorganisms that harbor extracellular electron transfer (EET) capabilities have evolved a series of beneficial strategies through the mutual exchange of electrons with extracellular minerals to enhance survival and metabolism. These electron exchange interactions are highly relevant to the cycling of elements in the epigeosphere and have a profound significance in bioelectrochemical engineering applications. In this review, we summarize recent advances related to the effects of different minerals that facilitate the EET process and discuss the underlying mechanisms and outlooks for future applications. The promotional effects of minerals arise from their redox-active ability, electrical conductivity and photocatalytic capability. In mineral-promoted EET processes, various responses have concurrently arisen in microorganisms, such as stretching of electrically conductive pili (e-pili), upregulated expression of outer-membrane cytochromes (Cyts) and production of specific enzymes, and secretion of extracellular polymeric substances (EPSs). This review synthesizes the understanding of electron exchange mechanisms between microorganisms and minerals and highlights potential applications in development of renewable energy production and pollutant remediation, which are topics of particular significance to future exploitation of biotechnology.

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Section: Mineral Photoelectrons Participate In Microbial Extracellulamentioning

confidence: 96%

Section: Enhanced Photoelectric Performance In Engineered Nonphototromentioning

confidence: 99%

Recent advances in the roles of minerals for enhanced microbial extracellular electron transfer

Dong

Chen

Yan

et al. 2020

Renewable and Sustainable Energy Reviews

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“…CdS photosensitized Thiobacillus denitrificans [60,61]. The mechanism suggested that the photogenerated electrons from CdS were transferred to T. denitrificans via membrane-bound proteins such as quinols and cytochrome C. During continuous photocatalytic NO 3 − reduction, no dissolution of Cd 2+ ion was observed in the reaction medium, indicating that Cd 2+ ions may be readily captured and reused for the biomineralization of CdS.…”

Section: Nps For Photosensitizationmentioning

confidence: 99%

Material–Microbe Interfaces for Solar-Driven CO2 Bioelectrosynthesis

Sahoo

Pant

Kumar

et al. 2020

Trends in Biotechnology

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“…iobacillus denitrificans in genus iobacillus is a sulfur autotrophic and denitrifying bacterium [2]. T. denitrificans is a common bacterium in sewage treatment.…”

Section: Community Composition Analysis At the Family Andmentioning

confidence: 99%

“…e direct discharge of excessive ammonia nitrogen into water bodies causes eutrophication. Moreover, nitrate and nitrite, the oxidation products of ammonia, will affect aquatic ecosystems and human health [2]. Since 1998, China has revised a series of environmental quality standards to control the discharge of ammonia nitrogen and nitrate into water bodies.…”

Section: Introductionmentioning

confidence: 99%

Separating and Characterizing Functional Nitrogen Degraders via Magnetic Nanoparticle-Mediated Isolation

Sun

Yin

Zheng

et al. 2020

Journal of Chemistry

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Magnetic nanoparticle-mediated isolation (MMI) is a new method for isolating active functional microbes from complex microorganisms without substrate labeling. In this study, the composition and properties of magnetic nanoparticles (MNPs) were characterized by a number of techniques, indicating that MNPs have characteristics such as microinterfaces and can be efficiently fixed on the surface of microbial cells. It also introduced the MMI technology in activated sludge after stable long-term treatment. With further addition of promotor carbon sources, the enrichment of the functional nitrogen degraders in MMI was significantly higher than in samples without MNPs, showing the advantages of MMI in identifying the active degraders. Redundancy analysis (RDA) also showed that the functional nitrogen degraders such as Comamonadaceae_unclassified and Thiobacillus absolutely dominated in situ ammonia degradation, and the change in dominant genera had the same trend as the degradation rate of ammonia nitrogen. In the magnetically functionalized system, the separated functional nitrogen degraders significantly improved ammonia nitrogen degradation efficiency, making it basically stable at more than 80%, up to 91.6%. These results prove that the complex flora created after the addition of MNPs is more adaptable to newly introduced pollutants, and MMI is a powerful tool for studying pollutant-degrading microorganisms under in situ conditions.

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Light-driven nitrous oxide production via autotrophic denitrification by self-photosensitized Thiobacillus denitrificans

Cited by 105 publications

References 43 publications

Recent advances in the roles of minerals for enhanced microbial extracellular electron transfer

Recent advances in the roles of minerals for enhanced microbial extracellular electron transfer

Material–Microbe Interfaces for Solar-Driven CO2 Bioelectrosynthesis

Separating and Characterizing Functional Nitrogen Degraders via Magnetic Nanoparticle-Mediated Isolation

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