Biodegradation of petroleum hydrocarbons by Neosartorya sp. BL4

Taewoo Yi, Eun Hee Lee, Hyerim Park, Kyung Suk Cho

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A new petroleum hydrocarbon-degrading fungus, isolated from an oil contaminant soil, was identified as Neosartorya (teleomorph of Aspergillus) sp. This isolate was able to degrade total petroleum hydrocarbons (TPHs) without a lag phase, but degradation rates decreased with increasing initial TPH concentrations (5,000-20,000 mg L?1). The TPH degradation by the isolate showed a substrate inhibition behavior with an inhibition constant (Ki) of 1,860 mg L?1. Dual lag phase of TPH degradation indicated the ability to adapt its metabolic activity to utilize different types of hydrocarbons as an electron donor. Initially n-alkanes were rapidly removed without lag phase in the whole range of substrate and heavy molecular weight alkanes (HMWAs; C23-C24) and low molecular weight alkanes (LMWAs C9-C15) out of n-alkane hydrocarbons were degraded rapidly, whereas the removal of mid molecular weight alkanes (MMWAs; C16-C22) was relatively slower. Relatively slow degradation ofMMWAs is probably caused by biotransformation of HMWAs or non-alkane hydrocarbons to MMWAs.

Original languageEnglish
Pages (from-to)1763-1768
Number of pages6
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume46
Issue number14
DOIs
StatePublished - 2011

Bibliographical note

Funding Information:
This study was supported by RP-Grant 2009 of Ewha Womans University.

Keywords

  • Alkane
  • Biodegradation
  • Fungus
  • Neosartorya sp.
  • Petroleum hydrocarbons

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