Biogeochemistry of acid mine drainage and a method to control acid formation
Journal Article
·
· Min. Eng. (N.Y.); (United States)
OSTI ID:6306683
A bacterium, Thiobacillus ferrooxidans, is of prime importance in the formation of acid drainage from pyritic material. Above pH 4.5, T. ferrooxidans increases initial acidification; below pH 4.5, it allows acidification to continue by oxidizing Fe/sup 2 +/. Below a pH of approximately 2.5, the activity of Fe/sup 3 +/ is significant and results in steady-state cycling between oxidation of pyrite by Fe/sup 3 +/ and bacterial oxidation of Fe/sup 2 +/. Laboratory and field tests demonstrate that inhibition of T. ferrooxidans by controlled release of anionic detergents can inexpensively reduce pyrite oxidation and acid formation.
- OSTI ID:
- 6306683
- Journal Information:
- Min. Eng. (N.Y.); (United States), Journal Name: Min. Eng. (N.Y.); (United States) Vol. 33:3; ISSN MIENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID MINE DRAINAGE
BACILLUS
BACTERIA
BIOGEOCHEMISTRY
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
GEOCHEMISTRY
IRON COMPOUNDS
IRON SULFIDES
MICROORGANISMS
MINERALS
ORES
OXIDATION
PYRITE
PYRITES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
THIOBACILLUS FERROXIDANS
TRANSITION ELEMENT COMPOUNDS
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID MINE DRAINAGE
BACILLUS
BACTERIA
BIOGEOCHEMISTRY
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
GEOCHEMISTRY
IRON COMPOUNDS
IRON SULFIDES
MICROORGANISMS
MINERALS
ORES
OXIDATION
PYRITE
PYRITES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
THIOBACILLUS FERROXIDANS
TRANSITION ELEMENT COMPOUNDS