Jump to main content
Jump to site search

Issue 3, 2011
Previous Article Next Article

Efficient biodegradation of common ionic liquids by Sphingomonas paucimobilis bacterium

Author affiliations

Abstract

The biodegradation of ionic liquids (ILs) was evaluated by an indirect impedance technique, through which carbon dioxide production was measured during bioassay time. The biodegradation study was focused on finding a microorganism able to efficiently degrade common IL compounds. For the first time, a bacteria strain of Sphingomonas paucimobilis was employed in biodegradability tests of ILs, carried out for 37 commercial imidazolium-, pyridinium-, pyrrolidinium-, ammonium- and phosphonium-based ILs, including in the sample 12 different anions and 14 different cations. Remarkably, more than half of ILs studied (54% of the sample) exhibited a biodegradation percentage ≥60% after a 28-day incubation period with S. paucimobilis at 45 °C; therefore, they behave as easily biodegradable compounds from the indirect impedance test. In summary, current results suggested the possibility of biotreatment for the rapid and ultimate mineralisation of widely used ILs, such as BmimNTf2, BmimPF6, etc., which were noted as recalcitrant to biodegradation in previous standard tests with other microorganisms.

Graphical abstract: Efficient biodegradation of common ionic liquids by Sphingomonas paucimobilis bacterium

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Nov 2010, accepted on 16 Dec 2010 and first published on 25 Jan 2011


Article type: Paper
DOI: 10.1039/C0GC00766H
Green Chem., 2011,13, 709-717

  •   Request permissions

    Efficient biodegradation of common ionic liquids by Sphingomonas paucimobilis bacterium

    C. Abrusci, J. Palomar, J. L. Pablos, F. Rodriguez and F. Catalina, Green Chem., 2011, 13, 709
    DOI: 10.1039/C0GC00766H

Search articles by author

Spotlight

Advertisements