Abstract
The effect of pretreating biomass( bagasse /eucalyptus) with ionic liquids( ILs) EmimAc and AmimCl has been explored by assessing the saccharification yield. Factors including temperature,time and solid-to-liquid ratio have been investigated. The results indicate that two ILs produce the best results for the two kinds of biomass at 140 ℃ when the solid-to-liquid ratio is 1∶ 15. For EmimAc,the optimum pretreatment time is 12 h for eucalyptus,and 4 h for bagasse,respectively. For AmimCl,the optimum pretreatment time is 14 h for eucalyptus,and 8 h for bagasse,respectively. The saccharification yields of EminAc pretreated eucalyptus and bagasse are 13. 931 and 3. 886 times those of traditional methods,respectively. For AmimCl, the saccharification yields ars imoroved to 4. 665 and 2. 835 times,respectively. The results show that EmimAc exhibits a better pretreatment effect than AmimCl.
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