Abstract
Aiming to add knowledge to the search for new possibilities of alternative biomass to the biomasses that are already adopted by the sugar-energy industries, this work sought to analyze the possibility of using cassava husks that are residues from the production of starch to obtain fuel ethanol. Treatments to optimize the acid hydrolysis process were carried out, having as variants the concentration of sulfuric acid with 1%, 3% and 5% (m/v), the sieve granulometry varying in 16, 24 and 32 mesh, also having different autoclaving times varying from 10, 35 and 60 minutes with cassava husks (Manihot esculenta Crantz), in order to obtain a broth with a high content of fermentable sugars. Therefore, it was possible to verify that the use of cassava husks (cassava plant residues) as sources for obtaining ethanol have promising properties using a concentration of 5% sulfuric acid, a 32 mesh sieve and autoclaving the samples for a period of 22.5 minutes.
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