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Title: Supercritical Water Gasification of Lactose as a Model Compound for Valorization of Dairy Industry Effluents
Authors: Nanda S.
Reddy, Sivamohan N.
Hunter H.N.
Butler I.S.
Kozinski J.A.
Published in: Industrial and Engineering Chemistry Research
Abstract: The dairy industry effluents, including whey waste and milk-based residues, are enriched in lactose and minor amounts of glucose that could potentially be converted to biofuels and biochemicals. Lactose was used in this work as a model compound of dairy effluents for gasification in supercritical water using a continuous flow tubular reactor. Four parameters impacting supercritical water gasification were studied, namely, temperature (550-700 °C), residence time (30-75 s), feed concentration (4-10 wt %), and catalyst concentration (0.2-0.8 wt %). The best total gas yields, carbon gasification efficiency, H<inf>2</inf> yields, and other major gases (CO<inf>2</inf> and CH<inf>4</inf>) were obtained at 700 °C using a feed concentration of 4 wt % lactose and a residence time of 60 s at fixed pressure of 25 MPa. Furthermore, catalytic lactose gasification involving 0.8 wt % Na<inf>2</inf>CO<inf>3</inf> resulted in maximum H<inf>2</inf> yield (22.4 mol/mol) compared to those obtained by 0.8 wt % K<inf>2</inf>CO<inf>3</inf> (21.5 mol/mol) and noncatalytic gasification (16 mol/mol). © 2015 American Chemical Society.
Citation: Industrial and Engineering Chemistry Research (2015), 54(38): 9296-9306
Issue Date: 2015
Publisher: American Chemical Society
ISSN: 8885885
Author Scopus IDs: 56350215900
Author Affiliations: Nanda, S., Department of Earth and Space Science and Engineering, York University, Toronto, ON M3J 1P3, Canada
Reddy, S.N., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
Hunter, H.N., Department of Chemistry, York University, Toronto, ON M3J 1P3, Canada
Butler, I.S., Department of Chemistry, McGill University, Montreal, QC H3A 2K6, Canada
Kozinski, J.A., Department of Earth and Space Science and Engineering, York University, Toronto, ON M3J 1P3, Canada
Corresponding Author: Kozinski, J.A.; Department of Earth and Space Science and Engineering, York UniversityCanada
Appears in Collections:Journal Publications [CH]

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