Publication: Characteristics of hydrochar and liquid fraction from hydrothermal carbonization of cassava rhizome
Issued Date
2018-04-01
Resource Type
ISSN
17460220
17439671
17439671
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2-s2.0-85010929498
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of the Energy Institute. Vol.91, No.2 (2018), 184-193
Suggested Citation
Kamonwat Nakason, Bunyarit Panyapinyopol, Vorapot Kanokkantapong, Nawin Viriya-empikul, Wasawat Kraithong, Prasert Pavasant Characteristics of hydrochar and liquid fraction from hydrothermal carbonization of cassava rhizome. Journal of the Energy Institute. Vol.91, No.2 (2018), 184-193. doi:10.1016/j.joei.2017.01.002 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/45773
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Title
Characteristics of hydrochar and liquid fraction from hydrothermal carbonization of cassava rhizome
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.