Bacterial pyrite oxidation under different metabolic states of bacteria

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F04%3A00011995" target="_blank" >RIV/00216224:14310/04:00011995 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Bacterial pyrite oxidation under different metabolic states of bacteria
Original language description
Pyrite biooxidation is an important process in sulfide wastes and biohydrometallurgy resulting in environmental acidification. Induction of iron-oxidizing system in bacteria grown on sulfur seems to be an essential factor for pyrite oxidation. Electrochemical, proteomic and kinetic differences during bacterial pyrite oxidation by cultures of Acidithiobacillus ferooxidans grown on sulfur or iron were investigated. Based on electrochemical parameters of pyrite electrode, which was described for arsenopyrite oxidation studies [1], iron-oxidizing bacteria were able to oxidize pyrite since the beginning. Sulfur-oxidizing A. ferrooxidans provided rather reductive conditions at the beginning and was not able to oxidize pyrite immediately. Kinetic observationswith pyrite concentrate demonstrated a lag phase in the ability of pyrite oxidation. Induction of iron-oxidizing system during the lag phase is assumed.
Czech name
Bakteriální oxidace pyritu za odlišných metabolických stavů bakterií
Czech description
Bakteriální oxidace pyritu

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CE - Biochemistry
OECD FORD branch
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Project
<a href="/en/project/GA525%2F04%2F1309" target="_blank" >GA525/04/1309: Bacterial oxidation of inorganic sulfur substances, environmental aspects</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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