Sugar production by dilute acid hydrolysis of oat bagasse with three different acids: kinetics and thermodynamics

Abstract

Acid hydrolysis is used as a treatment method to hydrolyze the polysaccharides present in biomass to fermentable sugars. In this research the hydrolysis(Biodegradationof oat bagassemodelingwas studiedof sludgeemployingbioreactorsdifferentof totalinorganicpetroleumacidshydrocarbons(HCl, H weathering in soil2SO4 and H3 PO4 ) at low temperatures (90-110 °C)andinsediments) a long-term process. Sulfuric acid showed a high potential to produce reducing sugars reaching the maximum productionS.A.yieldsMedina-Moreno,at 110°C, whileS. Huerta-Ochoa,hydrochloricC.A.acidLucho-Constantino,at 110°C was theL.mostAguilera-Vázquez,catabolic acidA.promotingJiménez-sugars transformation into furfural.GonzálezFTIR andy M.relativeGutiérrez-Rojastransmittance analyses suggested that major impact on lignin polymer was made by phosphoric acid hydrolysis at Combined Severity Factors (CSF) higher than 1.5. Kinetic constants calculated from conventional 259 Crecimiento, sobrevivencia y adaptación de Bifidobacterium infantis a condiciones ácidas Saeman model allowed to determine thermodynamic parameters for each inorganic acid. Decomposition of sugars occurred most frequently when the(Growth,ActivationsurvivalEnergiesand adaptation(Ae) wereoflowBifidobacteriumthan calculatedinfantisfortosugaracidicproduction,conditions) being aldehydes, the most stable products obtained duringL. Mayorga-Reyes,hydrolysis. ThermodynamicP. Bustamante-Camilo,parametersA. Gutiérrez-Nava,show an endothermicE. Barranco-Floridoand non-spontaneousy A. Azaola-oat bagasse hydrolysis reaction for different inorganic acids.