Catalysed Hydrothermal Carbonization of Woody Biomass and Recycling of Process Liquid

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  • The research introduces catalysed hydrothermal carbonization (CHTC) as a treatment method for woody biomass to produce solid hydrochar as well as value-added compounds (VACs). The hydrochar had higher heating values (HHV) of 28.3 MJ/kg and H/C and O/C ratios similar to coal, when using the liquid:biomass (L:B) ratio of 12:1 for the process. Densified CHTC hydrochar pellets were 97% durable, and hydrophobic when compared with wood pellets and torrefied wood pellets. CHTC has the potential to produce VACs such as glycolic acid, formic acid, acetic acid, levulinic acid, 5-hydroxymethylfurfural, and furfural, from the process liquid effluent. Recycling the process liquid at L:B of 5:1 increased the concentration of the VACs and energy yield of the hydrochar. The production yields of the VACs were dependent upon the L:B ratios, they increased parallel with L:B ratios.

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  • Copyright © 2019 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
Date Created
  • 2019


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