Biodegradation studies of polyaromatic hydrocarbons in aqueous media

Journal of Applied Microbiology
E SepicH Leskovsek

Abstract

Sixteen bacterial strains isolated from an activated sludge and Mycobacterium ssp. PYR-1 were tested for their ability to degrade polyaromatic hydrocarbons (PAHs). The bacterial strains Pasteurella ssp. (B-2) and Mycobacterium ssp. PYR-1 (AM) showed a high biodegradation potential of three- and four-ring PAHs. Bacterial strain AM was able to degrade up to 80% of three and four-ring PAHs (phenanthrene, fluoranthene and pyrene) within the first month of incubation, while the bacterial strain B-2 achieved the same biodegradation in 2 months. The metabolic pathway of PAH degradation was studied using fluoranthene and the bacterial strain AM. Ninety per cent of fluoranthene was biodegraded within the first 9 d of incubation when applied as a single substrate. Retention factor values from thin-layer chromatography studies, gas chromatography with mass selective detection and tandem mass spectrometry identified 9-fluorenone-1-carboxylic acid as one of the stable metabolic products and from this a fluoranthene biodegradation pathway is proposed.

Citations

Jun 25, 2003·Chemosphere·Ester SepicHermina Leskovsek
Feb 2, 2010·Journal of Hazardous Materials·M R Pérez-GregorioJ Simal-Gándara
Apr 9, 2009·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·M MiragliaA Vespermann
Jan 25, 2011·Microbial Biotechnology·Robert A Kanaly, Shigeaki Harayama
Apr 17, 2016·Environmental Science and Pollution Research International·Dorra HentatiMohamed Chamkha
Jul 21, 2017·Environmental Science & Technology·Jill E SchrlauLewis Semprini
Apr 1, 2002·FEMS Microbiology Ecology·Mikael ErikssonWilliam W Mohn
May 12, 2017·Environmental Science and Pollution Research International·Małgorzata Hawrot-PawPaweł Sędłak

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