Conversion of Cassava Rhizome to Biocrude Oil via Hydrothermal Liquefaction

Parinvadee Chukaew, Kamonwat Nakason, Sanchai Kuboon, Wasawat Kraithong, Bunyarit Panyapinyopol, Vorapot Kanokkantapong

Abstract


Hydrothermal liquefaction (HTL) was applied to investigate the feasibility in converting cassava rhizome (CR) to biocrude oil (BO) as an alternative biofuel. HTL was performed at various process temperatures (250 – 300°C) and retention times (15 – 60 min). Process temperature is a vital key parameter on fuel properties of BO. Yield and HHV of BO were in the range of 22.90 – 31.00%, and 19.80 – 23.08 MJ/kg, respectively. The BO with maximum energy recovery efficiency (ERE) was derived at 275°C for 30 min. BO contains ketones and aldehydes, phenols, hydrocarbons, and alcohols which are in good agreement with chemical functional groups of FTIR spectra. The chemical reactions during BO formation were also proposed in this study.

Keywords


Agricultural waste; Biocrude oil; Biomass utilization; Hydrothermal liquefaction; Renewable energy

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