Catalysed Hydrothermal Carbonization of Woody Biomass and Recycling of Process Liquid

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Creator: 

Ghaziaskar, Amin

Date: 

2019

Abstract: 

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.

Subject: 

Engineering - Mechanical
Engineering - Environmental
Chemistry

Language: 

English

Publisher: 

Carleton University

Contributor: 

co-author, supervisor: 
Glenn McRae
co-author, co-supervisor: 
Onita Basu
co-author, co-supervisor: 
Edward Lai
co-author: 
Alexis Mackintosh

Thesis Degree Name: 

Master of Applied Science: 
M.App.Sc.

Thesis Degree Level: 

Master's

Thesis Degree Discipline: 

Engineering, Mechanical

Parent Collection: 

Theses and Dissertations

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