Abstract
This paper reports a production of ethanol by using wood residues using a method for identification of compounds dispersed in fermented nitric cellulosic hydrolysate liquor. It was used twelve different species collected in south regions of Brazil as biomass. High performance liquid chromatography (HPLC) employing analytical proton-exchange technique was used. The fermentation ability plus ethanol yields by using Saccharomyces cerevisiae were investigated. Standard compounds identified in analysis were: fructose, lactic acid, acetic acid, glycerol, glucose and ethanol. The yeast showed good ethanol productivities in ranges between: 3.00 g/L/h Cedrelinga catenaeformis and 0.76 g/L/h using Ocotea porosa, respectively; after 8 h of fermentation essay. All residues demonstrated similar efficiency in second generation of cellulosic ethanol production, emerging this discards feasible when used as biomasses. Finally, this paper contributes to the sustainable production of biofuels through the process monitoring and optimization, contributing to the renewable energies generations research area.
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