Butanol is particularly suited as a transport fuel because it is not water soluble and has higher energy content than ethanol.
Most commonly used raw materials in butanol production have so far been starch and cane sugar. In contrast to this, the starting point in the Aalto University study was to use only lignocellulose, otherwise known as wood biomass, which does not compete with food production.
Another new breakthrough in the study is to successfully combine modern pulp -- and biotechnology. Finland's advanced forest industry provides particularly good opportunities to develop this type of bioprocesses.Wood biomass is made up of three primary substances: