BioChem - DOS

Effect of ozonolysis parameters on the inhibitory compound generation and on the production of ethanol by Pichia stipitis and acetone-butanol-ethanol by Clostridium from ozonated and water washed sugarcane bagasse

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Travaini, R.; Barrado, E.; Bolado-Rodriguez, S.

Sugarcane bagasse (SCB) was ozone pretreated and detoxified by water washing, applying a L<SUB>9</SUB>(3)<SUP>4</SUP> orthogonal array (OA) design of experiments to study the effect of pretreatment parameters (moisture content, ozone concentration, ozone/oxygen flow and particle size) on the generation of inhibitory compounds and on the composition of hydrolysates of ozonated-washed samples. Ozone concentration resulted the highest influence process parameter on delignification and sugar release after washing; while, for inhibitory compound formation, moisture content also had an important role. Ozone expended in pretreatment related directly with sugar release and inhibitory compound formation. Washing detoxification was effective, providing non-inhibitory hydrolysates. Maximum glucose and xylose release yields obtained were 84% and 67%, respectively, for ozonated-washed SCB. Sugar concentration resulted in the decisive factor for biofuels yields. Ethanol production achieved an 88% yield by Pichia stipitis, whereas Clostridium acetobutylicum produced 0.072g<SUB>BUTANOL</SUB>/g<SUB>SUGAR</SUB> and 0.188g<SUB>ABE</SUB>/g<SUB>SUGAR</SUB>, and, Clostridium beijerinckii 0.165g<SUB>BUTANOL</SUB>/g<SUB>SUGAR</SUB> and 0.257g<SUB>ABE</SUB>/g<SUB>SUGAR</SUB>.

2016

Elsevier Applied Science

0960-8524

218

pp.850-858

10.1016/j.biortech.2016.07.028

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART76146996

Ozonolysis pretreatment; Sugarcane bagasse; Hydrolysates detoxification; Ethanol; Butanol