BioChem - DOS

Restructuring the processes for furfural and xylose production from sugarcane bagasse in a biorefinery concept for ethanol production

Chemical engineering and processing = Génie des procédés = Verfahrenstechnik

Mesa, L.; Morales, M.; Gonzalez, E.; Cara, C.; Romero, I.; Castro, E.; Mussatto, S.I.

This study consisted in restructuring the processes for furfural and xylose production from sugarcane bagasse in a biorefinery concept for the residues utilization on ethanol production. The dilute acid hydrolysis conditions for furfural or xylose production were firstly established on laboratory scale and then reproduced on a 10-L bench reactor fed with direct steam. The furfural production was maximum when using a 1.25% (w/w on dry fiber) H<SUB>2</SUB>SO<SUB>4</SUB> solution at 175<SUP>o</SUP>C during 40min; whereas the xylose production attained the best results when using a 1% (w/v) H<SUB>2</SUB>SO<SUB>4</SUB> solution in a solid/liquid ratio of &frac14; (g/mL), and the sugarcane bagasse impregnated with the acid solution during 24h prior to the hydrolysis reaction. Enzymatic hydrolysis of the residual solid material obtained from furfural or xylose production was performed with yields of 17.4 and 9.3g glucose/100g initial raw material, respectively. Subsequently, ethanol was produced from the residual solid materials obtained from furfural and xylose production with yields of 87.4% and 89.3% respectively, based on the maximum theoretical value (0.51g ethanol per g glucose in hydrolysate). Such results demonstrated the possibility of restructuring the processes for furfural or xylose production to obtain solid residues able to be used as substrate for ethanol production by fermentation.

2014

Elsevier Sequoia

0255-2701

85

pp.196-202

10.1016/j.cep.2014.07.012

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART70667909

Sugarcane bagasse; Xylose; Furfural; Acid hydrolysis; Enzymatic hydrolysis