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    Solvothermal Liquefaction of Corn Stalk: Physico-Chemical Properties of Bio-oil and Biochar

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    Fulltext not available
    Authors
    Nizamuddin, S.
    Baloch, H.
    Mujawar, Mubarak
    Riaz, S.
    Siddiqui, M.
    Takkalkar, P.
    Tunio, M.
    Mazari, S.
    Bhutto, A.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Nizamuddin, S. and Baloch, H. and Mujawar, M. and Riaz, S. and Siddiqui, M. and Takkalkar, P. and Tunio, M. et al. 2018. Solvothermal Liquefaction of Corn Stalk: Physico-Chemical Properties of Bio-oil and Biochar. Waste and Biomass Valorization. 10 (7): pp. 1957-1968.
    Source Title
    Waste and Biomass Valorization
    DOI
    10.1007/s12649-018-0206-0
    ISSN
    1877-2641
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/67578
    Collection
    • Curtin Research Publications
    Abstract

    This study investigated the conversion of corn stalk to bio-oil by solvothermal liquefaction using ethanol as a solvent. Effect of reaction temperature, time and solvent to biomass ratio on the yield and the properties of bio-oil and biochar was studied. Analysis of corn stalk and bio-oil were done to determine the surface functional groups, existing bonds and molecular structure of specified compounds. Investigations were done to identify different compounds in bio-oil, the thermal stability, and weight loss kinetics of biochar. Study shows that percentage yield of bio-oil increases with increase in temperature and time, up to a specific level, and then starts declining. Further, the heating value, carbon content, and fixed carbon content of both bio-oil and biochar increased to 30.52, 22.8 MJ/kg, and 66.42 and 61.25%, 26.10 and 27.97% respectively from those (19.55 MJ/kg, 51.12 and 6.36%) of the corn stalk. This study suggests that the bio-oil contained mostly phenolic compounds and its derivatives. Two major DTG peaks were observed at 380 and 620 °C indicating the improvement in thermal stability of the biochar after solvolysis liquefaction process. Investigation results can be very useful in optimizing process parameters for solvothermal liquefaction.

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