Results 161 to 170 of about 12,578 (193)
Generation of zero valent sulfur from dissimilatory sulfate reduction under methanogenic conditions
Journal of Hazardous Materials, 2020 Dissimilatory sulfate reduction mediated by sulfate-reducing microorganisms (SRMs) has a pivotal role in the sulfur cycle, from which the generation of zero valent sulfur (ZVS) represents a novel pathway. Nonetheless, information on ZVS production from the dissimilatory sulfate reduction remains scarce. This study successfully showed the ZVS production
Wenwen Fang, , Shanquan Wang
exaly +7 more sources
Recent advances in dissimilatory sulfate reduction: From metabolic study to application
Water Research, 2019 Sulfate-reducing bacteria (SRB) are a group of diverse anaerobic microorganisms omnipresent in natural habitats and engineered environments that use sulfur compounds as the electron acceptor for energy metabolism. Dissimilatory sulfate reduction (DSR)-based techniques mediated by SRB have been utilized in many sulfate-containing wastewater treatment ...
Hamish R Mackey, Mark C M Van Loosdrecht
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FEMS Microbiology Reviews, 2023 Abstract Sulfate/sulfite-reducing microorganisms (SRM) are ubiquitous in nature, driving the global sulfur cycle. A hallmark of SRM is the dissimilatory sulfite reductase encoded by the genes dsrAB. Based on analysis of 950 mainly metagenome-derived dsrAB-carrying genomes, we redefine the global diversity of microorganisms with the ...
Muhe Diao +2 more
exaly +4 more sources
Bioresource Technology Reports, 2019 Dissimilatory sulfate reduction mediated by sulfate-reducing microorganisms (SRMs) has a pivotal role in the sulfur cycle, from which the generation of zero valent sulfur (ZVS) represents a novel pathway.
Wenwen Fang, Zhiwei Liang, Yulong Liu
exaly +2 more sources
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Revisiting the dissimilatory sulfate reduction pathway
Geobiology, 2011Sulfur isotopes in the geological record integrate a combination of biological and diagenetic influences, but a key control on the ratio of sulfur isotopes in sedimentary materials is the magnitude of isotope fractionation imparted during dissimilatory sulfate reduction.
A. S. BRADLEY +2 more
openaire +3 more sources
Journal of Hazardous Materials, 2018
The priority pollutant antimony (Sb) exists primarily as Sb(V) and Sb(III) in natural waters, and Sb(III) is generally with greater mobility and toxicity than Sb(V). The bio-reduction of Sb(V) would not become a meaningful Sb-removal process unless the accumulation of produced dissolved Sb(III) could be controlled.
Naiyun Gao, Wenhai Chu
exaly +3 more sources
The priority pollutant antimony (Sb) exists primarily as Sb(V) and Sb(III) in natural waters, and Sb(III) is generally with greater mobility and toxicity than Sb(V). The bio-reduction of Sb(V) would not become a meaningful Sb-removal process unless the accumulation of produced dissolved Sb(III) could be controlled.
Naiyun Gao, Wenhai Chu
exaly +3 more sources
A protein trisulfide couples dissimilatory sulfate reduction to energy conservation
Science, 2015Sulfate reduction via a trisulfide Microorganisms can respire sulfur compounds in the absence of oxygen, eventually leading to the production of hydrogen sulfide. This ancient metabolism is common in modern anoxic environments, but the enzymatic pathways aren't yet fully resolved. Through in vivo and in vitro experiments, Santos
André A Santos +2 more
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Geochimica Et Cosmochimica Acta, 2005
Abstract Sulfur isotope fractionation during dissimilatory sulfate reduction has been conceptually described by the widely accepted Rees model as related to the stepwise reduction of sulfate to sulfide within the cells of bacteria. The magnitude of isotope fractionation is determined by the interplay between different reduction steps in a chain of ...
Benjamin Brunner, Stefano M Bernasconi
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Abstract Sulfur isotope fractionation during dissimilatory sulfate reduction has been conceptually described by the widely accepted Rees model as related to the stepwise reduction of sulfate to sulfide within the cells of bacteria. The magnitude of isotope fractionation is determined by the interplay between different reduction steps in a chain of ...
Benjamin Brunner, Stefano M Bernasconi
exaly +2 more sources
Dissimilatory bacterial sulfate reduction in montana groundwaters
Geomicrobiology Journal, 1980Abstract The origin of hydrogen sulfide in southeastern Montana groundwaters was investigated. Sulfate‐reducing bacteria were detected in 25 of 26 groundwater samples in numbers ranging from 2.0 × 101 to greater than 2.4 × 104 bacteria per 100 ml. Stable sulfur isotope fractionation studies indicated a biological role in sulfate reduction.
William S. Dockins +3 more
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2023
<p>The dominant pathway for of dissimilatory nitrogen metabolism, dissimilatory nitrate reduction to ammonium (DNRA) versus denitrification, remains challenging to predict in costal sediments. In an intertidal sand flat in the Wadden Sea, the capacity for DRNA seems to relate directly to the capacity for sulfate reduction.
Olivia Bourceau +2 more
openaire +1 more source
<p>The dominant pathway for of dissimilatory nitrogen metabolism, dissimilatory nitrate reduction to ammonium (DNRA) versus denitrification, remains challenging to predict in costal sediments. In an intertidal sand flat in the Wadden Sea, the capacity for DRNA seems to relate directly to the capacity for sulfate reduction.
Olivia Bourceau +2 more
openaire +1 more source