Title:
Intensification of Wheat Straw Pretreatment by Thermomechanical Process for Enhancement of Sugar Recovery
Author(s):
Maache-Rezzoug, Z., Maugard, T., Nouviaire, A., Rezzoug, S.A.
Document(s):
Paper
Abstract:
Wheat straw is an interesting source for ethanol production; this abundant raw material has high cellulose content. Wheat straw was pretreated with a thermomechanical process developed in our laboratory to increase the enzymatic hydrolysis extent of potentially fermentable sugars. This process involves subjecting the lignocellulosic biomass for a short time to saturated steam pressure, followed by a flash decompression to vacuum at 50 mbar. Increasing of the heat induced by the saturated steam result in intensive vapour formation in the capillary porous structure of the plant material and the subsequent release of the pressure to vacuum allows fixing the structure. The process parameters tested in this study were the moisture content of wheat straw, processing steam pressure and the number of flash release pressure. Enzymatic hydrolysis was performed on the pretreated solids by celluclast (1.5L). The results showed that the moisture content is not a critical parameter. Although processing pressure has a strong effect on hydrolysis yield, its effect on acidity is very low.
Keywords:
enzymatic hydrolysis, pretreatment, steam explosion, wheat straw, yield
Topic:
Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Biochemical conversion
Event:
19th European Biomass Conference and Exhibition
Session:
VP2.6.27
Pages:
1759 - 1763
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP2.6.27
Price:
FREE
