Volume 56, Issue 7 pp. 432-442
RESEARCH ARTICLE

Kinetics study of total organic carbon destruction during supercritical water gasification of glucose

Muhammad Badrul Islam Chowdhury

Muhammad Badrul Islam Chowdhury

Natural Resources Canada, CanmetENERGY, Devon, Alberta, Canada

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Md Zakir Hossain

Corresponding Author

Md Zakir Hossain

Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada

Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology, Sylhet, Bangladesh

Correspondence

Paul A. Charpentier and Md Zakir Hossain, Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada.

Email: [email protected] and [email protected]

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Paul A. Charpentier

Corresponding Author

Paul A. Charpentier

Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada

Correspondence

Paul A. Charpentier and Md Zakir Hossain, Department of Chemical and Biochemical Engineering, Western University, London, Ontario N6A 5B9, Canada.

Email: [email protected] and [email protected]

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First published: 21 March 2024

Abstract

The kinetics of total organic carbon (TOC) destruction during supercritical water gasification (SCWG) of glucose were studied at 400–500°C and 25 MPa in a 600 mL batch reactor. Both TOC and water concentrations are critical for the conversion of TOC in supercritical water, especially at longer residence times. Initially, it was assumed that the TOC destruction reaction followed first-order kinetics ignoring the water concentration. However, experimental results showed that the feed-to-water ratio had a significant effect on TOC decomposition. Considering the water concentration in the reaction, the reaction orders of TOC (2.35) and water (1.45) were calculated using nonlinear regression analysis (the Runge-Kutta method). The estimated pre-exponential factor (k’) and activation energy (E) were calculated to be 8.1 ± 2/min and 90.37 ± 9.38 kJ/mol respectively.

CONFLICT OF INTEREST STATEMENT

There is no conflict of interest to disclose.

DATA AVAILABILITY STATEMENT

The data that supports the findings of this study will be made available on request.

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