iron-oxidizing bacteria
nounPronunciation: /ˈaɪɚn ˈɑksɪˌdeɪzɪŋ bæk̚ˈtɪriə/
Naturally occurring microorganisms that catalyze the oxidation of ferrous iron (Fe²⁺) to ferric iron (Fe³⁺), accelerating acid mine drainage generation in abandoned mines. These bacteria thrive in acidic, iron-rich environments and significantly increase the rate of AMD production.
Plain English
Bacteria that convert dissolved iron in mine water to solid rust, speeding up acid production.
Etymology & History
Usage
"Iron-oxidizing bacteria populations in the mine's drainage increased acidity and metal concentrations, necessitating biological treatment approaches."
Style guide notes: Use species names (Acidithiobacillus ferrooxidans) for technical precision; italicize genus and species.
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Frequently Asked Questions
Which bacteria species commonly cause AMD acceleration?
Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans are primary iron-oxidizers in acidic mine drainage.
Can iron-oxidizing bacteria be controlled in mines?
Yes, through pH adjustment, oxygen deprivation, or antimicrobial treatment in passive and active systems.
Why Test Candidates on This?
Understanding iron-oxidizing bacteria mechanisms is essential for predicting AMD severity and designing biological controls.
Required skill level: Mid