| 离子液体［omim］［PF6］的生物降解性研究 |
| 摘要点击 2528 全文点击 1350 投稿时间：2008-02-15 修订日期：2008-05-21 |
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| 中文关键词 omim］［PF6］ 生物降解性；［omim］+；降解途径 |
| 英文关键词 ［omim］［PF6］ biodegradation ［omim］+ pathways |
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| 中文摘要 |
| 以［omim］［PF6］为C、N、P营养源驯化活性污泥，考察驯化前后不同活性污泥接种微生物时离子液体的生物降解性，以及在支链上添加酯基对离子液体生物降解性的影响；同时，探讨经过驯化的活性污泥对1-甲基-3-辛基咪唑阳离子基团（［omim］+）生物降解的途径.结果表明，通过在支链上添加酯基，可以改善离子液体的生物降解性；以普通的活性污泥为接种微生物的密闭瓶实验表明，［omim］［PF6］的生物降解率<20%，属于难生物降解的物质，进入环境后可能产生较长时间的积累；以经过驯化的活性污泥为接种微生物时，可以提高［omim］［PF6］的生物降解率到60%左右；在［omim］+的生物降解过程中，会产生1-甲基咪唑阳离子的积累；对［omim］+的生物降解产物的HPLC-MS/MS分析，初步推测［omim］+的生物降解途径. |
| 英文摘要 |
| 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. |
