Microbial transformation of polycyclic aromatic hydrocarbons ((PAH)) in river sediments in the vicinity of a coal coking plant
Microbial transformation of polycyclic aromatic hydrocarbons ((PAH)) in river sediments in the vicinity of a coal coking plant were studied since coal-coking plant effluents contain components similar to those in treated wastewater from coal conversion facilities. Sediment samples were collected in a small river upstream, in the effluent channel, and 1.5 and 5 km downstream from the treated wastewater discharge of a large coking plant. Anthracene (A), benz(a)anthracene (BA), 7,12-dimethylbenz(a)anthracene (DMBA), dibenz(a,h)anthracene (DBA), or benz(a)pyrene (BP) labeled with carbon-14 were added to each sediment aliquot. Measurements of evolution of labeled carbon dioxide showed that degradation of A, Ba, and BP proceeded more rapidly than reported previously in either pristine or petroleum-contaminated streams. Production of carbon-14 from A in the effluent channel sample was about three times more rapid than in downstream samples and six times more rapid than in the upstream location. At all locations, carbon dioxide evolution was about 50 times more rapid than in previously assayed petroleum-contaminated sediments. No carbon dioxide was evolved from any sample after incubation with either DBA or DMBA. Preliminary results showed that more carbon-14 remains in sediment after extraction than is evolved as carbon dioxide. Flow diagram and chromatograms.
- Research Organization:
- Oak Ridge National Lab., TN
- OSTI ID:
- 5134200
- Journal Information:
- Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States) Vol. 18:1; ISSN ACEPC
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ANTHRACENE
AROMATICS
BENZANTHRACENE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIODEGRADATION
CARBON 14
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON ISOTOPES
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
COKING PLANTS
CONDENSED AROMATICS
DECOMPOSITION
EVEN-EVEN NUCLEI
HYDROCARBONS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
ISOTOPES
LIGHT NUCLEI
LIQUID WASTES
MICROORGANISMS
NUCLEI
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
RADIOISOTOPES
SEDIMENTS
SEPARATION PROCESSES
WASTE WATER
WASTES
WATER
WATER POLLUTION
YEARS LIVING RADIOISOTOPES