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Title: Subcritical and supercritical water gasification of lignocellulosic biomass impregnated with nickel nanocatalyst for hydrogen production
Authors: Nanda S.
Reddy, Sivamohan N.
Dalai A.K.
Kozinski J.A.
Published in: International Journal of Hydrogen Energy
Abstract: Advanced concepts in thermochemical biomass conversion are indispensable today for efficient generation of high-quality energy products. One of such strategies used in this study is the impregnation of nickel catalyst into lignocellulosic biomasses (pinewood and wheat straw) for hydrothermal water gasification. The nickel-impregnated feedstocks were gasified in subcritical and supercritical water to study the impacts of temperature (300, 400 and 500 °C), biomass-to-water ratio (1:5 and 1:10) and residence time (15, 30 and 45 min) at 23-25 MPa. The gasification of nickel-impregnated biomasses showed considerably higher total gas yields (9.5-16.2 mmol/g) and hydrogen yields (2.8-5.8 mmol/g) with greater carbon gasification efficiency (19.6-32.6%) when compared to non-catalytic gasification. Furthermore, hydrogen yields from nickel-impregnated biomasses were favored at an optimal temperature of 500 °C, biomass-to-water ratio of 1:10 and residence time of 45 min at 23-25 MPa. The nickel particles doped into the lignocellulosic matrix acted as nanocatalysts by providing active sites for enhancing hydrogen production in supercritical water. Copyright © 2016 Hydrogen Energy Publications, LLC.
Citation: International Journal of Hydrogen Energy (2016), 41(9): 4907-4921
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: Gasification
Subcritical water
Supercritical water
Wheat straw
ISSN: 3603199
Author Scopus IDs: 56350215900
Author Affiliations: Nanda, S., Department of Earth and Space Science and Engineering, York UniversityON, Canada
Reddy, S.N., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
Dalai, A.K., Department of Chemical and Biological Engineering, University of SaskatchewanSK, Canada
Kozinski, J.A., Department of Earth and Space Science and Engineering, York UniversityON, Canada
Funding Details: The authors thank Natural Sciences and Engineering Research Council of Canada (NSERC) and Canada Research Chair (CRC) program for funding this biomass conversion research. The assistance by Ms. Karen Rethoret (Manager of Microscopy and Imaging Facility) at York University in SEM-EDS and TEM imaging is acknowledged.
Corresponding Author: Kozinski, J.A.; Lassonde School of Engineering, York UniversityCanada; email:
Appears in Collections:Journal Publications [CH]

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