Kinetics of the pyrolytic and hydrothermal decomposition of water hyacinth

Luo, Guang’en, Strong, P. James, Wang, Hailong, Ni, Wuzhong and Shi, Weiyong (2011) Kinetics of the pyrolytic and hydrothermal decomposition of water hyacinth. Bioresource Technology, 102 13: 6990-6994. doi:10.1016/j.biortech.2011.04.048


Author Luo, Guang’en
Strong, P. James
Wang, Hailong
Ni, Wuzhong
Shi, Weiyong
Title Kinetics of the pyrolytic and hydrothermal decomposition of water hyacinth
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.1016/j.biortech.2011.04.048
Open Access Status Not Open Access
Volume 102
Issue 13
Start page 6990
End page 6994
Total pages 5
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract The kinetics of water hyacinth decomposition using pyrolysis and hydrothermal treatment was compared. With pyrolysis, initial vaporization occurred at 453. K as determined by thermogravimetric analysis, while initial solubilisation occurred at 433. K with subcritical hydrothermal treatment. The "kinetic triplet" was determined for the ranges of 423-483. K (range I) and 473-553. K (range II) using the Coats-Redfern method for both treatments. The calculated activation energies for ranges I and II were 110 and 116 kJ/mol for conventional pyrolysis and 145 and 90 kJ/mol for hydrothermal treatment. The similar activation energies for the two temperature ranges observed for pyrolysis implied that only hemicellulose decomposition occurred. For hydrothermal treatment, both hemicellulose and cellulose decomposition occurred in temperature range II, in which a notable lower activation energy was observed. This implied hydrothermal treatment was more suitable for conversion lignocellulosic biomass under these conditions.
Keyword Coats-Redfern method
Hydrothermal
Kinetic
Water hyacinth
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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