生物燃料丁醇的研究与前景

Research of biofuel butanol and its future

丁醇是一种新型的生物能源,在替代汽油作为燃料方面具有高热值、易混溶性、高辛烷值和低挥发性等优良特性。由于原料的价格和产物的抑制作用导致丁醇发酵成本偏高以及产物浓度过低。为降低发酵成本,减少产物的抑制作用,需要从原料选取、菌种的改良、发酵工艺和丁醇提取工艺等方面做深入的研究。

Butanol,a kind of new bioenergy resource,has some strong points as an alternative fuel：it has high energetic content, good miscibility, octane improving power, and low volatility. The key problems associated with the bioproduction of butanol are high cost of substrate, and the low concentration of butanol in the fermentation which result from the butanol toxicity/ inhibition to the fermenting microorganisms. It＇s pointed out that, to reduce the cost of fermentation and the butanol inhibition, the research must be focused on the use of economical fermentation substrates, strain improvement, and developing an energyefficient technology for the fermentation process and butanol recovery.