Denitrifying bio-cathodes developed from constructed wetland sediments exhibit electroactive nitrate reducing biofilms dominated by the genera Azoarcus and Pontibacter

Philippon, Timothé; Tian, Jiang-Hao; Bureau, Chrystelle; Chaumont, Cédric; Midoux, Cédric; Tournebize, Julien; Bouchez, Théodore; Barrière, Frédéric

doi:10.1016/j.bioelechem.2021.107819

Cited by 27 publications

(8 citation statements)

References 58 publications

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“…Azoarcus are also a genus of denitrifying bacteria, and its species have been previously used to enhance the nitrogen removal in either agriculture soils 63 or freshwater. 64 These results confirm that denitrification was the major process responsible for nitrogen removal in the saturated zone of the VBS.…”

Section: Microbial Community and Functional Genessupporting

confidence: 68%

Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems

Zhang,

Prodanovic,

Zhao

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Microbial Community and Functional Genessupporting

confidence: 68%

Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems

Zhang,

Prodanovic,

Zhao

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…In addition, under the limitation of carbon and nitrate, Flavobacterium can hydrolyze parathion through microbial competition. 50 Furthermore, Pseudomonas 51 and Azoarcus 52 were the predominant genera for denitrification and extracellular electron transfer (EET). Vulcanibacillus was the key denitrifier that contributed to N 2 O emissions at 25 °C and 35 °C.…”

Section: Resultsmentioning

confidence: 99%

Differences in microbial diversity, composition and function during V(v) release and reduction in nitrate–V(v) co-contaminated water from liquid carbon sources

Wang

Chen

Feng

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…Among those which were assigned to perform dissimilatory reduction of N compounds, representatives of the genus Azoarcus were most abundant which are also known from microbial fuel cells (Jiawei & Shaoan, 2019; Philippon et al, 2021). In addition, many representatives appeared to be involved in Fe cycling.…”

Section: Discussionmentioning

confidence: 99%

Microbially influenced corrosion and rust tubercle formation on sheet piles in freshwater systems

Fiskal

Shuster

Fischer

et al. 2023

Environmental Microbiology

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The extent of how complex natural microbial communities contribute to metal corrosion is still not fully resolved, especially not for freshwater environments. In order to elucidate the key processes, we investigated rust tubercles forming massively on sheet piles along the river Havel (Germany) applying a complementary set of techniques. In‐situ microsensor profiling revealed steep gradients of O2, redox potential and pH within the tubercle. Micro‐computed tomography and scanning electron microscopy showed a multi‐layered inner structure with chambers and channels and various organisms embedded in the mineral matrix. Using Mössbauer spectroscopy we identified typical corrosion products including electrically conductive iron (Fe) minerals. Determination of bacterial gene copy numbers and sequencing of 16S rRNA and 18S rRNA amplicons supported a densely populated tubercle matrix with a phylogenetically and metabolically diverse microbial community. Based on our results and previous models of physic(electro)chemical reactions, we propose here a comprehensive concept of tubercle formation highlighting the crucial reactions and microorganisms involved (such as phototrophs, fermenting bacteria, dissimilatory sulphate and Fe(III) reducers) in metal corrosion in freshwaters.

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Denitrifying bio-cathodes developed from constructed wetland sediments exhibit electroactive nitrate reducing biofilms dominated by the genera Azoarcus and Pontibacter

Cited by 27 publications

References 58 publications

Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems

Exploring denitrification and anammox processes in the saturated zone of passively operated vegetated biofiltration systems

Differences in microbial diversity, composition and function during V(v) release and reduction in nitrate–V(v) co-contaminated water from liquid carbon sources

Microbially influenced corrosion and rust tubercle formation on sheet piles in freshwater systems

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