Butanol is also superior to ethanol in several ways .

丁醇也比乙醇有很多优点。

Like ethanol , butanol is an alcohol .

同乙醇一样，丁醇也是一种乙醇。

The aim is to turn out an annual 2 billion litres of butanol by 2014 .

它的目标是在2014年前实现年产丁醇20亿升。

Engineered e. coli convert sugar to butanol 10 times faster than other microbes .

基因修饰的大肠杆菌把糖转化为丁醇的能力比其他微生物快10倍

Butanol , which is typically made by fermenting sugar , packs more energy per gallon than ethanol and can be shipped via existing oil pipelines .

丁醇本来是从糖发酵生产的，每加仑丁醇燃烧比乙醇释放更多能量，它还可以通过现有的输油管运输。