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Title: Characteristics of hydrochar and liquid fraction from hydrothermal carbonization of cassava rhizome
Authors: Kamonwat Nakason
Bunyarit Panyapinyopol
Vorapot Kanokkantapong
Nawin Viriya-empikul
Wasawat Kraithong
Prasert Pavasant
Vidyasirimedhi Institute of Science and Technology
Chulalongkorn University
Mahidol University
King Mongkut s University of Technology Thonburi
Thailand National Science and Technology Development Agency
Center of Excellence on Environmental Health and Toxicology (EHT)
Keywords: Energy;Engineering;Physics and Astronomy
Issue Date: 1-Apr-2018
Citation: Journal of the Energy Institute. Vol.91, No.2 (2018), 184-193
Abstract: © 2017 Energy Institute Hydrothermal carbonization (HTC) of cassava rhizome (CR) was performed to investigate the effect of process parameters including temperature, time, and biomass to water ratio (BTW) on characteristics of hydrochar and liquid fraction products. The effect of temperature was two-fold. First, an increase in reaction temperature from 160 to 180 °C decreased hydrochar yield from 54 to 51%, however, a further increase of temperature from 180 to 200 °C saw an increase in the hydrochar yield to 58%. This was associated to degradation, polymerization, and condensation reactions during HTC. The hydrogen/carbon and oxygen/carbon atomic ratios decreased from 1.4 and 0.6 at 160 °C to 1.2 and 0.4 at 200 °C, respectively. The liquid fraction contained various valuable chemical species including, glucose, furan compounds, (furfural, furfuryl alcohol, hydroxymethylfurfural), volatile fatty acid (succinic acid, lactic acid, formic acid, acetic acid, levulinic acid, and propionic acid) with their highest yields (wt.% dry raw material) of 4.5, 18.5, and 24.3, respectively.
ISSN: 17460220
Appears in Collections:Scopus 2018

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