Microbial biofilm and corrosion in cooling systems are the most common problems that damage expensive equipment, cause loss of production, and increase maintenance costs. Sulfate reducing bacteria were considered the major bacterial group involved in microbiologically influenced corrosion (MIC). We investigated the survival and enumeration of biofilm-associated SRB on coupons of galvanized stee...

BACKGROUND Arsenic (As) toxicity is primarily based on its chemical speciation. Although inorganic and methylated As species are well characterized in terms of metabolism and formation in the human body, the origin of thiolated methylarsenicals is still unclear. OBJECTIVES We sought to determine whether sulfate-reducing bacteria (SRB) from the human gut are actively involved in the thiolation...

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 vertical distribution of sulfate-reducing bacteria (SRB) in aerobic wastewater biofilms grown on rotating disk reactors was investigated by fluorescent in situ hybridization (FISH) with 16S rRNA-targeted oligonucleotide probes. To correlate the vertical distribution of SRB populations with their activity, the microprofiles of O(2), H(2)S, NO(2)(-), NO(3)(-), NH(4)(+), and pH were measured w...

Abstract The main goal of this study was to develop a cost-efficient biological method for the removal sulfate from mining effluents in cold conditions. A consortium cold-tolerant sulfate-reducing bacteria (SRB) tested at 6 °C regarding utilization economically viable, low-cost carbon sources, i.e., whey, conditioned sewage sludge, and peat, synthetic water. Succinate used as reference source. ...

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 objective of this research was to study the feasibility of a two stage continuous system employing anaerobic-aerobic microbial film for domestic wastewater treatment and the effect of iron on the behavior of sulfate reducing bacteria in anaerobic metabolism. a bench scale system with an anaerobic filter followed by aerobic fixed units used plastic media and was operated in up flow manner wi...

Abstract Adherent macrofouling in marine environments caused complex corrosion of steel surfaces, resulting localized at the oyster/steel interface and uniform ascidian/steel interface. Sulfate-reducing bacteria (SRB) have been implicated microbiologically influenced (MIC) process macrofouling-covered interfaces. To better understand role biofilms as key mediators MIC process, metagenomic techn...

The effect of sulfate addition on the stability of, and microbial community behavior in, low-temperature anaerobic expanded granular sludge bed-based bioreactors was investigated at 15°C. Efficient bioreactor performance was observed, with chemical oxygen demand (COD) removal efficiencies of >90%, and a mean SO(2-) 4 removal rate of 98.3%. In situ methanogensis appeared unaffected at a COD: SO(...