The present work aims at approximating the reduction of sulphate to sulphide caused by sulphate-reducing bacteria (SRB) inside Canadian deep geological repository in order calculate expected lifetime used nuclear fuel containers (UFCs). Previous studies have assumed a conservative constant concentration host rock interface. novelty this study resides use first-order kinetics explicitly account ...

BACKGROUND Butyrate oxidation within the colonocyte is selectively inhibited by hydrogen sulphide, reproducing the metabolic lesion observed in active ulcerative colitis. AIMS To study generation of hydrogen sulphide by sulphate reducing bacteria (SRB) and the effects of 5-aminosalicylic acid (5-ASA) in patients with ulcerative colitis in order to identify a role of this noxious agent in path...

On the composition base of commercial X65 grade pipeline steels, a Cu modified steel was designed to show improved resistance microbially induced corrosion (MIC). The mechanical properties Cu-added and its behavior in soil solution inoculated with sulfate-reducing bacteria (SRB) were investigated this work. results demonstrated that exhibits good combination strength toughness. ions released fr...

The current importance of energy emphasizes the use of renewable resources (such as wastewater) for electricity generation by microbial fuel cell (MFC). In the present study, the native sulfate-reducing bacterial strain (R.gh 3) was employed simultaneously for sulfurous component removal and bioelectricity generation. In order to enhance the electrical conductivity and provision of a compatible...

Chondroitin sulfate (CS) has shown either ameliorating or aggravating effects on osteoarthritis (OA) in separately conducted clinical trials. Because CS is usually administered orally, it should be affected by or would impact on the individual gut microbiota. Evidence is accumulating that CS can nourish sulfatase-secreting bacteria (SSB) and sulfate-reducing bacteria (SRB). To decipher how can ...

The objectives of the present work give results view some physicochemical, chemical and biological-chemical methods for heavy metals removal from Acid Mine Drainage (AMD). background studied physicochemical was adsorption by turf, precipitation neutralization with NaOH. principles were bioprecipitation applications sulphate-reducing bacteria (SRB), sorption bacterially produced iron sulphides b...

Hydrogen sulfide (H2S) produced by commensal sulfate-reducing bacteria, which are often members of normal colonic microbiota, represents an environmental insult to the intestinal epithelium potentially contributing to chronic intestinal disorders that are dependent on gene-environment interactions. For example, epidemiologic studies reveal either persistent sulfate-reducing bacteria colonizatio...

The reduction of Cr(VI) by biosynthesis iron sulfides (FeS1+x) under anoxic conditions has been studied extensively. However, the role sulfate-reducing bacteria (SRB) when FeS1+x containing SRB removes contaminants during in situ remediation still needs further study. secondary kinetic constant biosynthetic with presence (called BS-FeS1+x) was 1.72 times that absence BNS-FeS1+x) FeS1+x:Cr(VI) m...

<p>In the presence of nitrogen oxides, nitrate-reducing bacteria (NRB) may use nitrate as an electron acceptor, reduce to nitrite, and finally convert nitrite or ammonium (NO N2O). Studies have shown that BCX (Bio-Competitive Exclusion) is a viable , ecologically benign, low-cost technique for regulating NRB in its first phases study application. More precisely, Pseudomonas sp. isolate fr...

Microbial mats containing the filamentous anoxygenic photosynthetic bacterium Chloroflexus aggregans develop at Nakabusa hot spring in Japan. Under anaerobic conditions in these mats, interspecies interaction between sulfate-reducing bacteria as sulfide producers and C. aggregans as a sulfide consumer has been proposed to constitute a sulfur cycle; however, the electron donor utilized for micro...