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Title: Catalytic subcritical and supercritical water gasification as a resource recovery approach from waste tires for hydrogen-rich syngas production
Authors: Nanda S.
Reddy, Sivamohan N.
Hunter H.N.
Vo D.-V.N.
Kozinski J.A.
Gökalp I.
Published in: Journal of Supercritical Fluids
Abstract: Massive amounts of waste tires are generated globally posing disposal and recycling challenges. Waste tires were gasified in subcritical and supercritical water to study their degradation behavior during syngas production. The process parameters including temperature (325 °C to 625 °C), reaction time (15 min to 60 min) and feed concentration (5 wt% to 20 wt%) were optimized to maximize gas yields from waste tires. The highest total gas yields (34 mmol/g), hydrogen yields (14.4 mmol/g) and carbon gasification efficiency (42.6%) were achieved at optimal temperature (625 °C), reaction time (60 min) and feed concentration (5 wt%). The application of homogeneous and heterogeneous catalysts improved hydrogen yields from waste tires in the order: Ni/SiO2-Al2O3 (19.7 mmol/g) > Ru/Al2O3 (17.9 mmol/g) > Ba(OH)2 (16.9 mmol/g) > Ca(OH)2 (16.7 mmol/g) > Mg(OH)2 (15.4 mmol/g). The results suggest waste tires as a potential resource for recovery of hydrogen-rich fuel gas through hydrothermal gasification. © 2019 Elsevier B.V.
Citation: Journal of Supercritical Fluids (2019), 154(): -
Issue Date: 2019
Publisher: Elsevier B.V.
Keywords: Gasification
Homogeneous and heterogeneous catalysts
Subcritical water
Supercritical water
Waste tires
ISSN: 8968446
Author Scopus IDs: 56350215900
Author Affiliations: Nanda, S., Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, Canada
Reddy, S.N., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
Hunter, H.N., Department of Chemistry, York University, Toronto, Ontario, Canada
Vo, D.-V.N., Center of Excellence for Green Energy and Environmental Nanomaterials, Nguy?n T?t Thành University, H? Chí Minh City, Viet Nam
Kozinski, J.A., Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
Gökalp, I., Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), Centre National de la Recherche Scientifique (CNRS), Orléans, France
Funding Details: The authors would like to thank N atural Sciences and Engineering Research Council of Canada (NSERC) for the financial support to conduct this research.
Corresponding Author: Kozinski, J.A.; Department of Chemical Engineering, University of WaterlooCanada; email:
Appears in Collections:Journal Publications [CH]

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