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Title: Supercritical water gasification of biomass for hydrogen production
Authors: Reddy, Sivamohan N.
Nanda S.
Dalai A.K.
Kozinski J.A.
Published in: International Journal of Hydrogen Energy
Abstract: Hydrogen from waste biomass is considered to be a clean gaseous fuel and efficient for heat and power generation due to its high energy content. Supercritical water gasification is found promising in hydrogen production by avoiding biomass drying and allowing maximum conversion. Waste biomass contains cellulose, hemicellulose and lignin; hence it is essential to understand their degradation mechanisms to engineer hydrogen production in high-pressure systems. Process conditions higher than 374 °C and 22.1 MPa are required for biomass conversion to gases. Reaction temperature, pressure, feed concentration, residence time and catalyst have prominent roles in gasification. This review focuses on the degradation routes of biomass model compounds such as cellulose and lignin at near and supercritical conditions. Some homogenous and heterogeneous catalysts leading to water-gas shift, methanation and other sub-reactions during supercritical water gasification are highlighted. The parametric impacts along with some reactor configurations for maximum hydrogen production and technical challenges encountered during hydrothermal gasification processes are also discussed. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Citation: International Journal of Hydrogen Energy (2014), 39(13): 6912-6926
Issue Date: 2014
Publisher: Elsevier Ltd
Keywords: Cellulose
Process parameters
Supercritical water gasification
ISSN: 3603199
Author Scopus IDs: 56923787200
Author Affiliations: Reddy, S.N., Lassonde School of Engineering, York University, Toronto, ON, Canada
Nanda, S., Lassonde School of Engineering, York University, Toronto, ON, Canada
Dalai, A.K., Department of Chemical and Biological Engineering, University of Saskatchewan, SK, Canada
Kozinski, J.A., Lassonde School of Engineering, York University, Toronto, ON, Canada
Funding Details: The authors thank Natural Sciences and Engineering Research Council of Canada (NSERC) for the financial support towards this research.
Corresponding Author: Kozinski, J.A.; Lassonde School of Engineering, York University, Toronto, ON, Canada; email:
Appears in Collections:Journal Publications [CH]

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