Avaliação do potencial de etanol segunda geração a partir de lodo proveniente de indústria de MDF utilizando diferentes pré-tratamentos

Abstract

Second Generation Ethanol (2G) is a biofuel obtained from lignocellulosic biomass and has in its process a stage called pretreatment, whose purpose is to provide sugars that are in their most complex form. Pretreatment is of paramount importance for the later stages of obtaining 2G ethanol. Howevwer, there is no perfect condition for different biomasses so it is necessary to search for different biomasses and consequently pre-treatments aimed at them. The biomasses studied for this purpose are of vegetable origin, such as saccharin sorghum, elephant grass and residues such as sugarcane bagasses and rice husks. Sludge, waste from domestic or industrial sewage treatment plants (ETA) and⁄or sewage (ETE), has in its compositions different constituents that refer them to their origin. The experimental analyzes were performed at then Environmental Chemistry and Biofuel Research Laboratory(LAPEQ), and the Soil Laboratory of the Federal University of Tocantins, Campus Palmas. For statistical analysis, triplicates were performed with mean standard deviation for biomass characterization and a completely randomized design with 3 treatments and 5 replications to obtain glucose and reading by Liquid Chromatograph. The material analyzed presented cellulosic content equal to 12,89% and, despite low wnzymatic yield was the different treatments, the one that presented better glucose concentration ws the physic chemical. It is concluded that the studied lignocellulosic material has potential to obtain ethanol, since it presented passive conversion cellulose in glucose and consequently in ethanol. Besides being a waste material that can be reused for energy purposes, it is an alternative for final disposal and minimization of the environmental impacts caused by its disposal.