New strategy for liquefying corn stover pellets.

Autor: Dos Santos ACF; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Overton JC; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Szeto R; School of Materials Engineering, Purdue University, West Lafayette, IN 47907 United States., Patel MH; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Gutierrez DMR; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Eby C; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Martínez Moreno AM; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Departmento de Ingeniería Química y Ambiental, Universidad Nacional de Colombia, Bogotá, Colombia., Erk KA; School of Materials Engineering, Purdue University, West Lafayette, IN 47907 United States., Aston JE; Chemical Systems, Idaho National Laboratory, Idaho Falls, Idaho 83415 United States., Thompson DN; Biomass Characterization, Idaho National Laboratory, Idaho Falls, Idaho 83415 United States., Dooley JH; Forest Concepts LLC., Auburn, Washington 98001 United States., Sharma P; Discovery Park, Purdue University, West Lafayette, IN 47907 United States., Mosier NS; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Ximenes E; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States., Ladisch MR; Laboratory of Renewable Resources Engineering (LORRE), Purdue University, West Lafayette, IN 47907 United States; Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN 47907 United States; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907 United States. Electronic address: ladisch@purdue.edu.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2021 Dec; Vol. 341, pp. 125773. Date of Electronic Publication: 2021 Aug 15.
DOI: 10.1016/j.biortech.2021.125773
Abstrakt: The movement of solid material into and between unit operations within a biorefinery is a bottleneck in reaching design capacity, with formation of biomass slurries needed to introduce feedstock. Corn stover slurries have been achieved from dilute acid, pretreated materials resulting in slurry concentrations of up to about 150 g/L, above which flowability is compromised. We report a new strategy to liquefy corn stover at higher solids concentration (300 g/L) by initially cooking it with the enzyme mimetic maleic acid at 40 mM and 150 °C. This is followed by 6 h of enzymatic modification at 1 FPU (2.2 mg protein)/g solids, resulting in a yield stress of 171 Pa after 6 h and 58 Pa in 48 h compared to 6806 Pa for untreated stover. Mimetic treatment of corn stover pellets minimizes the inhibitory effect of xylo-oligomers on hydrolytic enzymes. This strategy allows for the delivery of solid lignocellulosic slurry into a pretreatment reactor by pumping, improving operability of a biorefinery.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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