Human activity is changing the composition of the atmosphere. The generation of greenhouse gases (GHGs) is a major environmental concern. The public and the governments at different levels are seeking solutions to this problem. There is an increasing consensus to promote the use of renewable and sustainable energy sources. Canada has targeted transportation, which contributes currently to 25% of CHGs, as a key sector. There is an impetus to increase the proportion of biofuels such as bio-ethanol and bio-butanol used either by itself or blended with gasoline. Bio-ethanol and bio-butanol have the advantage of being produced from cellulosic biomass (feedstocks that have cellulose as a primary constituent) that uses nearly the same amount of CO2 to grow as the CO2 generated by their production and combustion.

 

Therefore, the net production of CO2 is nearly zero when their overall cycle is considered.  They are renewable resources and do not contribute to the production of GHGs. This is the main motivation for the keen interest in the production of alcohol-based fuels. Biomass can potentially be produced from dedicated energy crops and agricultural materials or can be available as a by-product of many industrial processes. The main objective of this study is the use of an adsorption system for improved production during fermentation.