Enhancing denitrifying sulfide removal with functional strains under micro-aerobic condition

Sulfur-oxidizing bacteria in environmental technology

“…Sulfides may as well react with heavy metals, which are important components of the functional enzymes, e.g. Fe cytochromes, thus negatively affecting their activity (Chen et al, 2010). The undissociated form of dissolved hydrogen sulfide is toxic because it can diffuse through a cell membrane and inhibit cell activity inside.…”

“…Most of the representatives of the genus Thiobacillus sp. are strictly aerobic (T. thiooxidans, T. novellus, T. thioparus); on the contrary T. denitrificans and Thiobacillus ferroxidans are facultatively anaerobic; some bacterial genera are tolerant to micro-aerobic conditions (Thiothrix nivea, T. micro-aerophila) (Syed et al, 2006) or Aneurinibacillus aneurinilyticus (Chen et al, 2010).…”

Temporal variation of microbial population in a thermophilic biofilter for SO 2 removal

“…Bands B13, B15, and B16 belong to Aneurinibacillus sp., which is usually isolated from sludge in high-temperature environments. The strain could degrade sulfide via a biological denitrifying sulfide reaction (Chen et al, 2010). Thermophilic bacteria and desulfurization bacteria existed in the biofilter during the 10 months of operation.…”

Simultaneous biological removal of nitrogen–sulfur–carbon: Recent advances and challenges

“…A consortium H7, comprising two strains, Penibacillus sp. and Aneurinibacillus aneurinilyticus was isolated (Chen et al, 2010b). Enzymatic activities of sulfide oxidase, nitrate reductase and nitrite reductase, secreted by H7 in mixotrophic medium with an initial sulfide concentration of 0-200 mg l −1 were measured.…”