Microbial transformations of natural organic compounds and radionuclides in subsurface environments
Conference
·
OSTI ID:6343497
A major national concern in the subsurface disposal of energy wastes is the contamination of ground and surface waters by waste leachates containing radionuclides, toxic metals, and organic compounds. Microorganisms play an important role in the transformation of organic compounds, radionuclides, and toxic metals present in the waste and affect their mobility in subsurface environments. Microbial processes involved in dissolution, mobilization, and immobilization of toxic metals under aerobic and anaerobic conditions are briefly reviewed. Metal complexing agents and several organic acids produced by microbial action affect mobilization of radionuclides and toxic metals in subsurface environments. Information on the persistence of and biodegradation rates of synthetic as well as microbiologically produced complexing agents is scarce but important in determining the mobility of metal organic complexes in subsoils. Several gaps in knowledge in the area of microbial transformation of naturally occurring organics, radionuclides, and toxic metals have been identified, and further basic research has been suggested. 31 refs., 1 fig., 3 tabs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6343497
- Report Number(s):
- BNL-37206; CONF-8506191-2; ON: DE86003631
- Country of Publication:
- United States
- Language:
- English
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Sat Dec 31 23:00:00 EST 1983
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Fri Sep 29 00:00:00 EDT 2006
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OSTI ID:894608
Interactions between subsurface microbial assemblages and mixed organic and inorganic contaminant systems
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Mon Oct 31 23:00:00 EST 1994
· Bulletin of Environmental Contamination and Toxicology; (United States)
·
OSTI ID:6611325
Related Subjects
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
510302 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
520302* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
BIODEGRADATION
CHEMICAL REACTIONS
COMPLEXES
DECOMPOSITION
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ISOTOPES
LEACHATES
MATERIALS
METALS
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
RADIOISOTOPES
REVIEWS
SOLUTIONS
SUBSURFACE ENVIRONMENTS
TOXIC MATERIALS
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
510302 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
520302* -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Aquatic Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
BIODEGRADATION
CHEMICAL REACTIONS
COMPLEXES
DECOMPOSITION
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ISOTOPES
LEACHATES
MATERIALS
METALS
MICROORGANISMS
MIXTURES
ORGANIC COMPOUNDS
RADIOISOTOPES
REVIEWS
SOLUTIONS
SUBSURFACE ENVIRONMENTS
TOXIC MATERIALS