Biodegradation of dibromoneopentyl glycol by a bacterial consortium

Osnat Segev, Aharon Abeliovich, Ariel Kushmaro

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Dibromoneopentyl glycol (DBNPG) is a brominated flame retardant that is used as an additive during the manufacture of plastic polymers and as a chemical intermediate for other flame retardants. It is classified as not readily biodegradable and based on experimental studies in animals is believed to be a carcinogen. We have demonstrated, to the best of our knowledge for the first time, the complete biodegradation of DBNPG under aerobic conditions. Total organic carbon (TOC) analysis indicates the complete mineralization of DBNPG. DBNPG biodegradation was accompanied by the release of bromide into the medium, probably due to a biological debromination reaction by bacterial consortia. A denaturing gradient gel electrophoresis (DGGE) analysis of PCR amplified 16S rRNA gene was used, to characterize the bacterial consortia involved in DBNPG biodegradation. At least seven bacterial species were found to be involved in this process, among them species with similarity to strains that are known for their dehalogenating ability.

Original languageEnglish
Pages (from-to)958-964
Number of pages7
JournalChemosphere
Volume68
Issue number5
DOIs
StatePublished - 1 Jan 2007

Keywords

  • Bacterial consortium
  • Biodegradation
  • Brominated flame retardants
  • Debromination
  • Dibromoneopentyl glycol

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry (all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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