A microwave-assisted aqueous ionic liquid pretreatment to enhance enzymatic hydrolysis of Eucalyptus and its mechanism. (January 2019)

• Record Type: Journal Article
• Authors: Hou, Xianfeng; Wang, Zhinan; Sun, Jin; Li, Meng; Wang, Shujie; Chen, Kai; Gao, Zhenzhong
• Is Part Of: Bioresource technology. Volume 272(2019)
• Page Start: 99
• Page End: 104
• Publication Date: 2019-01
• Subjects: Microwave -- Ionic liquid -- Work mechanism -- Enzymatic saccharification -- Combined effect; 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.2018.10.003
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Microwave-assisted [TBA][OH] pretreatment is green, inexpensive and efficient. A sugar yield at 410.67 mg/g was obtained by optimized pretreatment conditions. The work mechanism was investigated in depth. The combined effect of microwave and [TBA][OH] leads to positive changes. Abstract: A novel pretreatment strategy based on combination of microwave and ionic liquid [TBA][OH] was developed for enhancing enzymatic hydrolysis of Eucalyptus sawdust. The sugar yield of pretreated sample achieved 410.67 mg/g in 48 h, which suffered from optimized microwave-assisted [TBA][OH] pretreatment. The work mechanism was illuminated by chemical composition, Fourier transform infrared spectroscopy (FTIR), 13 C cross polarization/magic-angle spinning solid state NMR ( 13 C solid NMR), X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses. The combined effect of microwave and [TBA][OH] leads to the violent deconstruction of lignin, removal of hemicelluloses, destruction of crystalline region and an eroded, pored and irregular micro-morphology. As a green, relatively inexpensive and high efficient pretreatment, microwave-assisted [TBA][OH] pretreatment has great potential in the field of bio-refinery.