REUSE OF WOOD WASTES FOR SECOND GENERATION ETHANOL PRODUCTION REUTILIZAÇÃO DE RESÍDUOS DE MADEIRA PARA PRODUÇÃO DE ETANOL DE SEGUNDA GERAÇÃO

This paper reports a production of ethanol by using wood residues using a method for identification of compounds dis- persed in fermented nitric cellulosic hydro- lysate liquor. It was used twelve different species collected in south regions of Brazil as biomass. High performance liquid chro- matography (HPLC) employing analytical proton-exchange technique was used. The fermentation ability plus ethanol yields by using Saccharomyces cerevisiae were in- vestigated. Standard compounds identified in analysis were: fructose, lactic acid, ace- tic acid, glycerol, glucose and ethanol. The yeast showed good ethanol productivities in ranges between: 3.00 g/L Cedrelinga cate- naeformis and 0.76 g/L using Ocotea poro- sa, respectively; after 8 h of fermentation es- say. All residues demonstrated possibility of second generation ethanol production, from cellulose, 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.