Conversion of cassava rhizome to alternative biofuels via catalytic hydrothermal liquefaction
9
Issued Date
2022-02-07
Resource Type
eISSN
25396293
Scopus ID
2-s2.0-85126598702
Journal Title
Asia-Pacific Journal of Science and Technology
Volume
27
Issue
2
Rights Holder(s)
SCOPUS
Bibliographic Citation
Asia-Pacific Journal of Science and Technology Vol.27 No.2 (2022)
Suggested Citation
Chukaew P. Conversion of cassava rhizome to alternative biofuels via catalytic hydrothermal liquefaction. Asia-Pacific Journal of Science and Technology Vol.27 No.2 (2022). Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/83321
Title
Conversion of cassava rhizome to alternative biofuels via catalytic hydrothermal liquefaction
Author(s)
Other Contributor(s)
Abstract
In this study, cassava rhizome was converted to alternative biofuels including biocrude oil (BO) and hydrochar (HC) using catalytic hydrothermal liquefaction (C-HTL) at 250 and 300℃ for 15 min using 4.0 wt.% of K2CO3 as a catalyst. BO and HC properties were investigated regarding the parameters of elemental composition, chemical functional groups, chemical compositions, and surface morphology. The maximum energy recovery efficiency (ERE) of sum product (83.98 wt.%) was derived at 300℃. Therefore, 300℃ was suggested as a promising C-HTL temperature. This condition derived a yield of BO and HC at 33.70 and 33.29 wt.%, with their Higher heating value (HHV) at 26.45 and 18.81 MJ/kg, respectively. Gas chromatography-mass spectroscopy (GC-MS) analysis results indicated that BO principally contains phenols, aldehydes and ketones, hydrocarbons and alcohols which can be fractionated and upgraded into the biofuels and various valuable chemicals. The hydrogen/carbon (H/C) and oxygen/carbon (O/C) atomic ratios of BO and HC were similar to those of fossil fuel, indicating their high potential as fossil fuel substituting materials.