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首页> 中文期刊> 《环境工程》 >餐厨垃圾直接发酵生产生物质丁醇的研究

餐厨垃圾直接发酵生产生物质丁醇的研究

         
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Feasibility of direct butanol production from kitchen wastes (without enzymatic saccharification) was investigated in this study. Preferably selected and high-efficient starch was used to produce Clostridium saccharoperbutylacetonicum N1-4, and it was discovered that the starch from different sources and configurations had an influence on fermentation, and amylose was easier to be utilized. Further, direct fermentation of kitchen wastes exhibited a higher efficiency than saccharification fermentation, and could also avoid substrate inhibition, when the solid-liquid ratio (SIR) was 1: 1, 12.1 g/L butanol was produced from direct fermentation of kitchen wastes with the butanol-carbon conversion rate being 0.402 C-mol/C-mol and the maximum butanol production rate being 0.705 g/ (L·h); when the SIR was 1: 2, the maximum butanol production rate from direct fermentation was 2.05 times that from saccharification fermentation. Thus, the butanol produced from fermentation of kitchen wastes provided cheap raw materials for butanol production while solving the environmental problems.%为考察餐厨垃圾不糖化直接进行产丁醇发酵的可行性,优选高效利用淀粉产丁醇梭菌Clostridium saccharoperbutylacetonicum N1-4,并发现不同来源和构型的淀粉对发酵有影响,且直链淀粉更易于被利用.餐厨垃圾直接发酵比糖化发酵效率高,且可避免底物抑制.在固液比1:1条件下,餐厨垃圾直接发酵丁醇产量达到12.1 g/L,丁醇碳转化率为0.402,最大生产速率为0.705 g/(L·h);固液比1:2条件下,直接发酵最大生产速率是糖化发酵的2.05倍.餐厨垃圾发酵产丁醇,可在解决环境问题的同时,为丁醇生产提供廉价原材料.

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