Biodegradation of pyridinium-based ionic liquids by an axenic culture of soil Corynebacteria

C. Zhang, H. Wang, S. V. Malhotra, C. J. Dodge, A. J. Francis

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

We investigated the biodegradation of ionic liquids N-ethylpyridinium tetrafluoroborate [EtPy]+[BF4], N-ethylpyridinium trifluoroacetate [EtPy]+[CF3COO], and 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM]+[PF6] by a soil bacterium isolated by an enrichment-culture technique. The bacterium identified as Corynebacterium sp. degraded the N-ethylpyridinium cation in the first two compounds when present as its sole carbon and nitrogen source without any obvious effects of the anion; however, [BMIM]+[PF6] was not metabolized. We observed cleavage of the pyridinium ring and identified the resulting metabolites by ESI/MS/MS. We propose a degradation pathway.

Original languageEnglish (US)
Pages (from-to)851-885
Number of pages35
JournalGreen Chemistry
Volume12
Issue number5
DOIs
StatePublished - May 11 2010
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

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