Pretreatment of Eucalyptus in biphasic system for furfural production and accelerated enzymatic hydrolysis. (August 2017)

• Record Type: Journal Article
• Authors: Zhang, Xiudong; Bai, Yuanyuan; Cao, Xuefei; Sun, Runcang
• Is Part Of: Bioresource technology. Volume 238(2017)
• Page Start: 1
• Page End: 6
• Publication Date: 2017-08
• Subjects: Eucalyptus -- Biphasic system -- Furfural -- Enzymatic hydrolysis; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.04.011
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A maximum furfural (FF) yield of 82.0% was obtained directly from Eucalyptus . The recovered solid residues showed a much higher digestibility (26.2–70.7%). Co-production of FF and glucose from Eucalyptus was achieved by biphasic pretreatment. Biphasic pretreatment is a promising route for FF and bio-ethanol industry. Abstract: Herein, an efficient biphasic pretreatment process was developed to improve the production of furfural (FF) and glucose from Eucalyptus . The influence of formic acid and NaCl on FF production from xylose in water and various biphasic systems was investigated. Results showed that the addition of formic acid and NaCl significantly promoted the FF yield, and the biphasic system of MIBK (methyl isobutyl ketone)/water exhibited the best performance for FF production. Then the Eucalyptus was pretreated in the MIBK/water system, and a maximum FF yield of 82.0% was achieved at 180 °C for 60 min. Surface of the pretreated Eucalyptus became relatively rough and loose, and its crystallinity index increased obviously due to the removal of hemicelluloses and lignin. The pretreated Eucalyptus samples showed much higher enzymatic hydrolysis rates (26.2–70.7%) than the raw Eucalyptus (14.5%).