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Bioremediation of coal tar PAH in soils using biodiesel

Lookup NU author(s): Dr Martin Jones


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The addition of biodiesel together with nitrate and phosphate to soil containing coal tar, in laboratory and field experiments, resulted in degradation of coal tar polycyclic aromatic hydrocarbons (PAH) that was not apparent when the nutrients alone were added. The addition of motor diesel fuel instead of biodiesel was also tested. Over the 55 days of the field and laboratory experiments, the biodiesel resulted in an increased degradation of naphthalene in the coal tar by 52% and 85%, respectively, and motor diesel resulted in increased depletions of 85% and 96%, respectively. Other PAH containing up to four rings were depleted to lesser extents. The increases in PAH biodegradation by the diesel treatments were ascribed to tar solubilisation and dispersion thereby increasing the PAH bioavailability. The ready biodegradability and low phytotoxicity of biodiesel suggest that it may be suitable as a novel treatment for the bioremediation of coal tar contaminated soils. © 2001 Elsevier Science Ltd. All rights reserved.

Publication metadata

Author(s): Taylor LT, Jones DM

Publication type: Article

Publication status: Published

Journal: Chemosphere

Year: 2001

Volume: 44

Issue: 5

Pages: 1131-1136

ISSN (print): 0045-6535

ISSN (electronic): 1879-1298

Publisher: Pergamon


DOI: 10.1016/S0045-6535(00)00344-1

PubMed id: 11513400


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