SpringerProtocols: Abstract: Liquid Hot Water Pretreatment of Cellulosic Biomass

7. Liquid Hot Water Pretreatment of Cellulosic Biomass

By: Youngmi Kim¹, Rick Hendrickson², Nathan S. Mosier¹, Michael R. Ladisch¹

Abstract

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Lignocellulosic biomass is an abundant and renewable resource for fuel ethanol production. However, the lignocellulose is recalcitrant to enzymatic hydrolysis because of its structural complexity. Controlled-pH liquid hot water (LHW) pretreatment of cellulosic feedstock improves its enzymatic digestibility by removing hemicellulose and making the cellulose more accessible to cellulase enzymes. The removed hemicellulose is solubilized in the liquid phase of the pretreated feedstock as oligosaccharides. Formation of monomeric sugars during the LHW pretreatment is minimal. The LHW pretreatment is carried out by cooking the feedstock in process water at temperatures between 160 and 190°C and at a pH of 4–7. No additional chemicals are needed. This chapter presents the detailed procedure of the LHW pretreatment of lignocellulosic biomass.

Affiliation(s): (1) Department of Agricultural and Biological Engineering, and Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN, USA
(2) Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, IN, USA

Book Title: Biofuels: Methods and Protocols

Series: Methods in Molecular Biology | Volume: 581 | Pub. Date: Oct-05-2009 | Page Range: 93-102 | DOI: 10.1007/978-1-60761-214-8_7

Subject: Biotechnology

Key Words: Cellulosic biomass - Pretreatment - Liquid hot water - Ethanol

References

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