Bakteriální oxidace pyritu za odlišných metabolických stavů bakterií

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Bacterial pyrite oxidation under different metabolic states of bacteria

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Bacterial pyrite oxidation under different metabolic states of bacteria

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CE - Biochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA525%2F04%2F1309" target="_blank" >GA525/04/1309: Bakteriální oxidace anorganických sirných látek, ekologické aspekty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Universitatis Palackianae Olomucensis

ISSN

0232-0061

e-ISSN

—

Svazek periodika

43S

Číslo periodika v rámci svazku

3.9.2004

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

1

Strana od-do

165-165

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—