Enhanced enzymatic digestibility of poplar wood by quick hydrothermal treatment. (April 2020)

• Record Type: Journal Article
• Authors: Tan, Liping; Liu, Zhongyang; Zhang, Tongtong; Wang, Zhaojiang; Liu, Tongjun
• Is Part Of: Bioresource technology. Volume 302(2020)
• Publication Date: 2020-04
• Subjects: Quick hydrothermal treatment -- Poplar wood -- Enzymatic hydrolysis -- Physical structure -- Specific surface area; 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.2020.122795
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: QHT achieved 82% cellulose conversion from a low cellulase dosage of poplar. QHT removed >85% hemicelluloses and ~30% lignin in poplar in 5–25 min. QHT increased crystallinity and special surface area of poplar. Abstract: To elevate the glucose yield from the enzymatic hydrolysis of poplar wood for bio-ethanol production, quick hydrothermal treatment (QHT) was conducted at 200 °C for a short period of time from 5 min to 25 min. It was found that the QHT could remove >85% of the hemicelluloses and ~30% of the lignin in the poplar wood, and achieve 82% cellulose conversion at a low cellulase dosage of 10 FPU/g substrate. The enhancement digestibility of poplar wood was ascribed to the higher accessibility of cellulose, as the specific surface area of the substrate increased from 3.0 m 2 /g to 7.1 m 2 /g from the of untreated wood to the QHT-treated wood. The results demonstrate the improvements in digestibility and hydrolysis rates after QHT.