摘要
许多生物质原料(如秸秆和木材)不易被微生物直接降解并转化为生物燃料。而将它们气化为合成气就可解决这一问题,因为有些微生物是能够利用CO和H2(合成气的基本组成部分)合成多碳化合物的。而氢气又可以由一氧化碳自养氢气生成菌在利用CO和H2O进行生长的过程中提供。但是,目前只有少数的嗜热菌能良好地利用合成气生长,而能够被用来进行有机化合物生产。新菌株的分离鉴定和代谢工程将扩大合成气发酵的产品范围。另外,尽管基因手段目前无法用于此生产过程,合成气发酵在生物燃料生产方面仍然有优势并具有潜力。
biomass sources like straw and wood are hardly degradable and cannot be converted to biofuels by microor- ganisms. While gasification of this material to produce synthesis gas could offer a solution to this problem, as microorganisms can convert CO and H2 （ essential components of synthesis gas ） to multicarbon compounds, and hydrogen can be also produced by carboxydotrophic hydrogenogenic bacteria that convert CO and H2O to H2 and CO2. However, few thermophiles can grow well on synthesis gas and produce organic compounds. The identification of new isolates and metabohc engineering could broaden the product range of synthesis gas fermentation. Although genetic tools for such engineering are currently unavailable synthesis gas fermentation possess advantage for biofuel production and hold potential future engineering efforts.
出处
《化工科技市场》
CAS
2009年第11期16-19,共4页
Chemical Technology Market
关键词
合成气
发酵
生物燃料
synthesis gas
fermentations
biofuel
