Kinetic studies on elemental sulfur oxidation by Acidithiobacillus ferrooxidans: sulfur limitation and activity of free and adsorbed bacteria
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
11857277
PII: 10.1002/bit.10172
Knihovny.cz E-zdroje
- MeSH
- adsorpce MeSH
- biologické modely * MeSH
- chemické modely MeSH
- elektrochemie metody MeSH
- elektrody MeSH
- koncentrace vodíkových iontů MeSH
- oxidace-redukce MeSH
- senzitivita a specificita MeSH
- síra metabolismus farmakokinetika MeSH
- sírany analýza MeSH
- Thiobacillus chemie růst a vývoj metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- síra MeSH
- sírany MeSH
The kinetics of sulfur oxidation by Acidithiobacillus ferrooxidans in shaking flasks and a 10-L reactor was studied. The observed linearity of growth and sulfur oxidation was explained by sulfur limitation. Total cell yield was not significantly different for exponential growth as compared to growth during the sulfur-limiting phase. Kinetic studies of sulfur oxidation by growing and nongrowing bacteria indicated that both free and adsorbed bacteria oxidize sulfur. Changes in the number of free bacteria rather than cells adsorbed on sulfur were better predictors of the kinetics of sulfur oxidation, indicating that the free bacteria were performing sulfur oxidation. The active growth phase always followed adsorption of bacteria on sulfur; however, the special metabolic role of adsorbed bacteria was unclear. Their activity in sulfur solubilization was considered.
Kinetic constant variability in bacterial oxidation of elemental sulfur
