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Microwave-assisted hydrothermal carbonization of rapeseed husk: A strategy for improving its solid fuel properties

Elaigwu, Sunday E.; Greenway, Gillian M.

Authors

Sunday E. Elaigwu

Gillian M. Greenway



Abstract

Hydrothermal carbonization of a waste biomass material is a green and promising technique for improving its solid fuel properties, which does not require pretreatment procedure such as drying of the biomass. In this study, hydrothermal carbonization of rapeseed husk, a waste plant material was carried out under microwave heating and the effect of process parameters, such as reaction temperature and residence time on the mass yields and energy properties of the hydrochars was studied. The procedure involved the heating of the feedstock in deionized water in a microwave oven at temperatures of 150 to 200 °C for a specified period of time. The results indicated that the mass yields decreased, as the reaction temperature and residence time were increased, which led to improvement in the energy properties of the prepared hydrochars. The reaction was rapid within the first 20 min, and stabilized afterwards. The energy properties of the prepared hydrochars are consistent with previous studies, showing that the hydrochars have the potential of being used as solid fuel. The structural and morphological analysis carried out revealed that the feedstock was transformed during the process.

Citation

Elaigwu, S. E., & Greenway, G. M. (2016). Microwave-assisted hydrothermal carbonization of rapeseed husk: A strategy for improving its solid fuel properties. Fuel Processing Technology, 149, 305-312. https://doi.org/10.1016/j.fuproc.2016.04.030

Acceptance Date Apr 23, 2016
Online Publication Date May 10, 2016
Publication Date Aug 1, 2016
Deposit Date Jul 5, 2016
Publicly Available Date Jul 5, 2016
Journal Fuel processing technology
Print ISSN 0378-3820
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 149
Pages 305-312
DOI https://doi.org/10.1016/j.fuproc.2016.04.030
Keywords Microwave-assisted, Hydrothermal carbonization, Hydrochar, Rapeseed husk, Mass yields, Energy properties
Public URL https://hull-repository.worktribe.com/output/440628
Publisher URL http://www.sciencedirect.com/science/article/pii/S0378382016301771
Additional Information Authors' accepted manuscript of article published in: Fuel processing technology, 2016, v.149.
Contract Date Jul 5, 2016

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