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Title: Factors affecting the microbial degradation of phenanthrene in soil. (Reannouncement with new availability information)

Because phenanthrene was mineralized more slowly in soils than in liquid media, a study was conducted to determine the environmental factors that may account for the slow biodegradation in soil. Mineralization was enhanced by additions of phosphate but not potassium, and it was reduced by additions of nitrate. Aeration or amending the soil with glucose affected the rate of mineralization, although not markedly. Phenanthrene was sorbed to soil constituents, the extent of sorption being directly related to the percentage of organic matter in the soil. Soluble phenanthrene was not detected after addition of the compound to a muck soil. The rate of mineralization was slow in the organic soil and higher in mineral soils with lower percentages of organic matter. We suggest that sorption by soil organic matter slows the biodegradation of polycyclic aromatic hydrocarbons that are otherwise readily metabolized.
Authors:
;
Publication Date:
OSTI Identifier:
91429
Report Number(s):
AD-A-239757/8/XAB
CNN: Contract DAAL03-89-K-0176; TRN: 52260534
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1991
Research Org:
Cornell Univ., Ithaca, NY (United States). Lab. of Soil Microbiology
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 54 ENVIRONMENTAL SCIENCES; POLYCYCLIC AROMATIC HYDROCARBONS; BIODEGRADATION; MINERALIZATION; PHENANTHRENE