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   Articles with "iii oxidation" as a keyword



Bioremediation of highly toxic arsenic via carbon-fiber-assisted indirect As(III) oxidation by moderately-thermophilic, acidophilic Fe-oxidizing bacteria

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recommendations! Published in 2019 at "Biotechnology Letters"

DOI: 10.1007/s10529-019-02746-7

Abstract: To enable removal of highly toxic As(III) from acidic waters by inducing indirect microbial As(III) oxidation by Fe-oxidizing bacteria via carbon-assisted redox-coupling between As(III) oxidation and Fe3+ reduction. Carbon-fiber (CF) was shown to function as… read more here.

Keywords: iii oxidation; oxidizing bacteria; highly toxic; carbon ... See more keywords

Mechanisms of Sb(III) oxidation mediated by low molecular weight phenolic acids

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recommendations! Published in 2019 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2018.09.008

Abstract: Abstract Quinone-like moieties are active components of natural organic matter (NOM), whose redox reactions may exert substantial influence on the behavior of trace metals in natural waters. The interactions between NOM and antimony (Sb) influence… read more here.

Keywords: iii oxidation; phenolic acids; low molecular; weight phenolic ... See more keywords

Rethinking anaerobic As(III) oxidation in filters: Effect of indigenous nitrate respirers.

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recommendations! Published in 2018 at "Chemosphere"

DOI: 10.1016/j.chemosphere.2017.12.158

Abstract: Microorganisms play a key role in the redox transformation of arsenic (As) in aquifers. In this study, the impact of indigenous bacteria, especially the prevailing nitrate respirers, on arsenite (As(III)) oxidation was explored during groundwater… read more here.

Keywords: iii oxidation; oxidation; rethinking anaerobic; nitrate respirers ... See more keywords

Oxidation of arsenite by self-regenerative bioactive birnessite in a continuous flow column reactor

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recommendations! Published in 2020 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2020.105416

Abstract: Abstract Naturally occurring manganese (Mn) oxide, biogenic birnessite ((Na, Ca, K)0.5 MnIII, IV2O4ยท1.5 H2O), is involved in the geochemical cycling of variety of metals including arsenic (As). This natural reaction was exploited in this study… read more here.

Keywords: iii oxidation; bioactive birnessite; column; oxidation ... See more keywords
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A review of the formation of Cr(VI) via Cr(III) oxidation in soils and groundwater

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recommendations! Published in 2021 at "Science of The Total Environment"

DOI: 10.1016/j.scitotenv.2021.145762

Abstract: Abstract Hexavalent chromium (Cr(VI)) is a widespread, toxic contaminant in the environment. Owing to the increasingly strict requirements for green production and pollution emission, Cr(VI) generation via Cr(III) oxidation is gradually becoming the primary source… read more here.

Keywords: iii oxidation; formation; via iii; oxidation soils ... See more keywords

Serratia spp. Are Responsible for Nitrogen Fixation Fueled by As(III) Oxidation, a Novel Biogeochemical Process Identified in Mine Tailings.

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recommendations! Published in 2022 at "Environmental science & technology"

DOI: 10.1021/acs.est.1c06857

Abstract: Biological nitrogen fixation (BNF) has important environmental implications in tailings by providing bioavailable nitrogen to these habitats and sustaining ecosystem functions. Previously, chemolithotrophic diazotrophs that dominate in mine tailings were shown to use reduced sulfur… read more here.

Keywords: bnf; iii oxidation; nitrogen fixation; dependent bnf ... See more keywords

Novel Insights into Sb(III) Oxidation and Immobilization during Ferrous Iron Oxygenation: The Overlooked Roles of Singlet Oxygen and Fe (oxyhydr)oxides Formation.

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recommendations! Published in 2024 at "Environmental science & technology"

DOI: 10.1021/acs.est.4c02006

Abstract: Reactive oxygen species (ROS) produced from the oxygenation of reactive Fe(II) species significantly affect the transformation of metalloids such as Sb at anoxic-oxic redox interfaces. However, the main ROS involved in Sb(III) oxidation and Fe… read more here.

Keywords: oxidation immobilization; oxyhydr oxides; iii oxidation; oxygenation ... See more keywords

Determination of isotope fractionation of Cr(iii) during oxidation by LC/low-resolution MC-ICPMS

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recommendations! Published in 2020 at "Journal of Analytical Atomic Spectrometry"

DOI: 10.1039/c9ja00388f

Abstract: A robust and sensitive method for the precise isotopic analysis of 53Cr/50Cr during Cr(III) oxidation by coupling ion pair reversed-phase chromatography and Multicollector Inductively Coupled Plasma Mass Spectrometry (MC-ICPMS) is presented. The effective separation of… read more here.

Keywords: iii oxidation; 53cr 50cr; oxidation; isotope ... See more keywords
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Diversity and Metabolic Potentials of As(III)-Oxidizing Bacteria in Activated Sludge

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recommendations! Published in 2021 at "Applied and Environmental Microbiology"

DOI: 10.1128/aem.01769-21

Abstract: AOB play an important role in the removal of toxic arsenic from wastewater. Most of the AOB have been isolated from natural environments. ABSTRACT Biological arsenite [As(III)] oxidation is an important process in the removal… read more here.

Keywords: iii oxidation; activated sludge; wastewater; oxidation ... See more keywords

Various microbial taxa couple arsenic transformation to nitrogen and carbon cycling in paddy soils

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recommendations! Published in 2024 at "Microbiome"

DOI: 10.1186/s40168-024-01952-4

Abstract: Arsenic (As) metabolism pathways and their coupling to nitrogen (N) and carbon (C) cycling contribute to elemental biogeochemical cycling. However, how whole-microbial communities respond to As stress and which taxa are the predominant As-transforming bacteria… read more here.

Keywords: paddy soils; iii oxidation; reduction; taxa ... See more keywords

Simultaneous removal of nitrogen and arsenite by heterotrophic nitrification and aerobic denitrification bacterium Hydrogenophaga sp. H7

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recommendations! Published in 2023 at "Frontiers in Microbiology"

DOI: 10.3389/fmicb.2022.1103913

Abstract: Introduction Nitrogen and arsenic contaminants often coexist in groundwater, and microbes show the potential for simultaneous removal of nitrogen and arsenic. Here, we reported that Hydrogenophaga sp. H7 was heterotrophic nitrification and aerobic denitrification (HNAD)… read more here.

Keywords: iii oxidation; nitrification; removal; denitrification ... See more keywords