Results 161 to 170 of about 554 (200)
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Archives of Microbiology, 1992
The marine green sulfur bacterium Chlorobium vibrioforme strain 1930 produced H2 and elemental sulfur from sulfide or thiosulfate under N limitation in the light. H2 production depended on nitrogenase and occurred only in the absence of ammonia. Methionine sulfoximine, an inhibitor of glutamine synthetase, prevented the switch-off by ammonia.
Heribert Cypionka +2 more
exaly +2 more sources
The marine green sulfur bacterium Chlorobium vibrioforme strain 1930 produced H2 and elemental sulfur from sulfide or thiosulfate under N limitation in the light. H2 production depended on nitrogenase and occurred only in the absence of ammonia. Methionine sulfoximine, an inhibitor of glutamine synthetase, prevented the switch-off by ammonia.
Heribert Cypionka +2 more
exaly +2 more sources
Water Research, 2019
Sulfidogenic process using sulfate-reducing bacteria (SRB) has been used to remove arsenite from the arsenic-contaminated waters through the precipitation of arsenite with sulfide. However, excessive sulfide production and significant pH increase induced by sulfate reduction result in the formation of the mobile thioarsenite by-products and the ...
Jianliang Sun +2 more
exaly +3 more sources
Sulfidogenic process using sulfate-reducing bacteria (SRB) has been used to remove arsenite from the arsenic-contaminated waters through the precipitation of arsenite with sulfide. However, excessive sulfide production and significant pH increase induced by sulfate reduction result in the formation of the mobile thioarsenite by-products and the ...
Jianliang Sun +2 more
exaly +3 more sources
Chemosphere, 2019
Biological sulfur reduction is an attractive sulfidogenic technology for the treatment of organics-deficient metal-laden wastewater, because it theoretically reduces the electron donor consumption by 75%, compared to sulfate reduction. However, reducing the external organic substrate dosage may lower the sulfur reduction rate.
Jianliang Sun, Feng Jiang, Jiahua Guo
exaly +4 more sources
Biological sulfur reduction is an attractive sulfidogenic technology for the treatment of organics-deficient metal-laden wastewater, because it theoretically reduces the electron donor consumption by 75%, compared to sulfate reduction. However, reducing the external organic substrate dosage may lower the sulfur reduction rate.
Jianliang Sun, Feng Jiang, Jiahua Guo
exaly +4 more sources
Role of sulfur-reducing bacteria in a wetland system treating acid mine drainage
Science of The Total Environment, 2008This report describes a twenty month case study of a successive alkalinity producing system (SAPS) treating a strong acid mine drainage (AMD) source in Coshocton County, Ohio. Prior to the commencement of the project, a large volume of black amorphous sludge had accumulated in several of the constructed wetlands. The sludge was found to be 43% organic,
R Guy, Riefler +3 more
openaire +2 more sources
Biosynthesis of semiconductor nanoparticles by using sulfur reducing bacteria Serratia nematodiphila
Advances in nano research, 2013The synthesis of semiconductor nanoparticles is a growing research area due to the prospective applications for the development of novel technologies. In this paper we have reported the biosynthesis of Cadmium sulfide nanoparticles (CdSNPs) by reduction of cadmium sulphate solution, using the bacteria of Serratia nematodiphila.
C. Malarkodi +5 more
openaire +1 more source
Electric current generation by sulfur-reducing bacteria in microbial-anode fuel cell
SPIE Proceedings, 2012Sulfur - reducing bacteria are a part of normal microflora of natural environment. Their main function is supporting of reductive stage of sulfur cycle by hydrogen sulfide production in the process of dissimilative sulfur-reduction. At the same time these bacteria completely oxidize organic compounds with CO 2 and H 2 O formation.
Oresta M. Vasyliv +3 more
openaire +1 more source
Hyperfine Interactions, 2008
Zero-field and in-field Mossbauer investigations and electron paramagnetic resonance (EPR) measurements to follow the kinetics of the iron mineral formation by thermophilic dissimilatory anaerobic Fe(III)-reducing bacteria (strain Z-0001) and anaerobic alkaliphilic bacteria (strain Z-0531) were carried out.
N. I. Chistyakova +5 more
openaire +1 more source
Zero-field and in-field Mossbauer investigations and electron paramagnetic resonance (EPR) measurements to follow the kinetics of the iron mineral formation by thermophilic dissimilatory anaerobic Fe(III)-reducing bacteria (strain Z-0001) and anaerobic alkaliphilic bacteria (strain Z-0531) were carried out.
N. I. Chistyakova +5 more
openaire +1 more source
Current Microbiology, 1996
The spent caustic wastewater from the oxidation of sulfide present in offshore natural gas production mainly comprises thiosulfate and sulfate. A biocatalytic process, employing phototrophic green sulfur bacteria in symbiosis with sulfate-reducing bacteria, is described in this paper for the production of sulfur from the spent caustic wastewater, with ...
P. Khanna, B. Rajkumar, N. Jothikumar
openaire +1 more source
The spent caustic wastewater from the oxidation of sulfide present in offshore natural gas production mainly comprises thiosulfate and sulfate. A biocatalytic process, employing phototrophic green sulfur bacteria in symbiosis with sulfate-reducing bacteria, is described in this paper for the production of sulfur from the spent caustic wastewater, with ...
P. Khanna, B. Rajkumar, N. Jothikumar
openaire +1 more source
Digestive Diseases and Sciences, 2017
Microscopic colitis (MC), a subtype of inflammatory bowel disease, is a chronic condition of unknown etiology. Recent evidence has linked MC with intriguing changes in the stool microbiota, which may be linked to disease pathogenesis. The composition of the mucosal microbiome in patients with MC remains unclear.We performed a cross-sectional study ...
Valentine Millien +3 more
openaire +2 more sources
Microscopic colitis (MC), a subtype of inflammatory bowel disease, is a chronic condition of unknown etiology. Recent evidence has linked MC with intriguing changes in the stool microbiota, which may be linked to disease pathogenesis. The composition of the mucosal microbiome in patients with MC remains unclear.We performed a cross-sectional study ...
Valentine Millien +3 more
openaire +2 more sources
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 2013
A series of cationic ammonium surfactants (1–3) and sulfonamides (4–5) were synthesized and characterized using elemental analysis and FT-IR spectroscopy. The nanostructures of the synthesized surfactants and sulfonamides as silver and zinc nanoparticles (Ag/ZnNPs) were prepared and characterized using transmission electron microscope. The TEM image of
Salwa M. I. Morsy, Mohamed M. Ibrahim
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A series of cationic ammonium surfactants (1–3) and sulfonamides (4–5) were synthesized and characterized using elemental analysis and FT-IR spectroscopy. The nanostructures of the synthesized surfactants and sulfonamides as silver and zinc nanoparticles (Ag/ZnNPs) were prepared and characterized using transmission electron microscope. The TEM image of
Salwa M. I. Morsy, Mohamed M. Ibrahim
openaire +1 more source