title: [Biodegradation of [omim][PF6]].
abstract: Acclimatized the activated sludge with [omim][PF6] which was used as the C, N, P resources for microbe, the biodegradation ratio of [omim][PF6] with different inoculants which were acclimatized or not was investigated. And the influence of appending an ester in the side chain of the imidazolium cation on the biodegradation of [omim][PF6] was discussed in the same conditions. The biodegradation pathways of [omim]+ were analyzed. The results showed that the biodegradation of ionic liquids was improved by appending an ester in the side chain; the biodegradation rate of [omim][PF6] was less than 20% when the inoculant was original activated sludge, which was not referred as "readily biodegradable"; [omim][PF6] would stay in environment for a long time; the biodegradation ratio reached 60% when the inoculant was acclimatized activated sludge; 1-methyl-imidazolium was residual in the course of biodegradation of [omim]+, the semifinished products of biodegradation of [omim]+ was analyzed by HPLC-MS/MS and the pathways were presumed.
authors.affiliation: College of Environment and Resources, Jilin University, Changchun 130026, China. daining@email.jlu.edu.cn
authors.forename: Ning
authors.initials: N
authors.lastname: Dai
authors.forename: Feng-Jun
authors.initials: FJ
authors.lastname: Zhang
authors.forename: Ji
authors.initials: J
authors.lastname: Chen
authors.forename: Gang
authors.initials: G
authors.lastname: Li
authors.forename: Yue-Feng
authors.initials: YF
authors.lastname: Deng
authors.forename: Sui
authors.initials: S
authors.lastname: Li
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D007093:Imidazoles / Q000378:metabolism*; D052578:Ionic Liquids / Q000378:metabolism*; D010084:Oxidation-Reduction; D012722:Sewage / Q000382:microbiology*; D053719:Tandem Mass Spectrometry / Q000379:methods
chemical_list: C446740:1-octyl-3-methylimidazolium hexafluorophosphate; D007093:Imidazoles; D052578:Ionic Liquids; D012722:Sewage