Paper details

Title:

Simulation of Barley Straw Acid Hydrolysis to Fermentable Oligosaccharides and Monosaccharides for Bioethanol Production

Author(s):

Sidiras, D.K.

Document(s):

Abstract:

The aim of this research is to study dilute sulfuric acid catalyzed hydrolysis of barley straw cellulose and hemicelluloses, employing a batch reactor. Process parameters investigated include variation in reaction ending temperature (160 ­ 220°C) and reaction time (0 50 min). A new kinetic model, incorporating a Severity Factor X or in logarithmic form logX, was developed simulating the process. Significant sugar degradation occurred at these conditions and the optimum yield was 37.7% for total fermentable sugars. Hemicelluloses acid hydrolysis gave 36.6 % w/w xylose for logX=­10.57 and 74.7% w/w oligosaccharides for logX=­11.19. Total xylose optimum was 91.1 % w/w for logX=­10.94. Cellulose acid hydrolysis gave 4.1 % w/w glucose for logX=­9.55 and 4.3% w/w oligosaccharides for logX=­9.71. Total glucose optimum was 8.3 % w/w for logX=­9.62. The produced oligosaccharides and monosaccharides, mainly glucose and xylose, are intended for bioethanol production by fermentation.

Keywords:

bioethanol, hydrolysis, model, straw

Topic:

Processes for Fuels from Biomass

Subtopic:

Production and supply of second generation biofuels

Event:

19th European Biomass Conference and Exhibition

Session:

VP3.5.6

Pages:

2160 - 2166

ISBN-13:

978-88-89407-55-4

ISBN-10:

88-89407-55-7

Paper DOI:

10.5071/19thEUBCE2011-VP3.5.6

Price:

FREE