Preliminary Analysis of Bioethanol Technology from Bagasse Considering Discontinuous System Concepts and the Delay Phenomena

摘要

The process to obtaining Bioethanol from lignocellulosic wastes is a frequent topic inrnthe world due to the growing crisis of fossil fuels. In this paper was analyzed thernBioethanol technology from bagasse considering discontinuous systems’ and the delayrnphenomena. This technology have two stages that are key to succeed in obtaining thernfermentable sugars, they are the pretreatment stage and enzymatic hydrolysis forrnsubsequent fermentation. The great obstacle of the two latter stages, is that for bestrnresults, need long residence times (and this is where the delay phenomena it appears).rnFor that reason the analysis require a study on how to carry out to ensure that thernprocess global continuous. The enzymatic hydrolysis stage last an average of 24 h,rnwhile fermentation stage is accomplishes in 12 h. In this paper, the bioethanolrntechnology was studied taking into account the basic concepts of discontinuous systems.rnDifferent technological configurations were studied, obtaining the best configuration:rnthe presaccharification process, according to technical and economics criterions. Thernprocess profitability is achieved considering the total process as a biorefinery, whichrnallows the production of high added value by-products such as furfural.