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    Co-pyrolysis of oil palm trunk and polypropylene: Pyrolysis oil composition and formation mechanism

    Access Status
    In process
    Authors
    Terry, L.M.
    Wee, M.X.J.
    Chew, J.J.
    Khaerudini, D.S.
    Timuda, G.E.
    Aqsha, A.
    Saptoro, Agus
    Sunarso, J.
    Date
    2023
    Type
    Journal Article
    
    Metadata
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    Citation
    Terry, L.M. and Wee, M.X.J. and Chew, J.J. and Khaerudini, D.S. and Timuda, G.E. and Aqsha, A. and Saptoro, A. et al. 2023. Co-pyrolysis of oil palm trunk and polypropylene: Pyrolysis oil composition and formation mechanism. South African Journal of Chemical Engineering. 43: pp. 348-358.
    Source Title
    South African Journal of Chemical Engineering
    DOI
    10.1016/j.sajce.2022.12.001
    Faculty
    Global Curtin
    School
    Global Curtin
    URI
    http://hdl.handle.net/20.500.11937/92244
    Collection
    • Curtin Research Publications
    Abstract

    Pyrolysis oil can be used as a precursor to synthesize value-added biochemicals. Co-pyrolysis of two or more feedstocks generally improves the selectivity and yield of the target compounds. In this work, oil palm trunk (OPT) was subjected to single-feed pyrolysis and co-pyrolysis with polypropylene (PP) from 500 to 700 °C. The highest pyrolysis oil yield of 26.33 wt.% was obtained from OPT at 700 °C, which mainly contributed by the lignin decomposition in OPT. Phenolics (51.77–57.78%) and oxygenates (36.31–46.99%) were the major compounds detected in the OPT-derived pyrolysis oil. The addition of PP enhanced the formation of hydrocarbons (5.19–10.22%) and decreased the contents of phenolics (34.01–41.85%) in the co-pyrolysis oil. In the case of co-pyrolysis, the intermolecular reactions between PP and OPT-derived radicals led to the formation of ketones and alcohols, which contributed to the increase of oxygenates content. The highest oil yield of 16.17 wt.% was obtained at 600 °C from co-pyrolysis, the oil of which contained mainly phenolic compounds, oxygenated compounds (i.e., ketones and furans), and hydrocarbons. These findings highlighted the potential of oil derived from the pyrolysis of OPT (single feed) and co-pyrolysis of OPT and PP (binary feed) for the production of value-added chemicals.

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