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  1. Nur Athirah Adam, Alawi Sulaima, Azhari Samsu Baharuddin, Mohd Noriznan Mokhtar, Zainuri Busu, Tengku Elida Tengku Zainal Mulok
    MyJurnal
    Palm Oil Fuel Ash (POFA) is a biomass produced from palm oil industries. POFA is known to contain
    a high amount of silica and has been proven by XRF spectroscopy, in which the silicon dioxide content
    is 72.63%. In this study, silica was synthesised from POFA. To extract the silica, POFA was fused
    with alkaline agent (Na2CO3) before mixing with Cethyltrimetyl Ammonium Bromide (CTAB) and
    Sulphuric Acid (H2SO4). Sodium silicate solution from the fusion was used as silica precursor replacing
    conventionally used silica source, Tetraethoxilane (TEOS). XRD pattern showed that raw POFA
    dominantly consists of silica. Meanwhile, FTIR analysis of the synthesised silica exhibited spectra
    bands at 3393 cm-1, 1635 cm-1, 1028 cm-1 and 787 cm-1 that corresponded to the functional groups of
    Si-O and O-H. Thus, it could be concluded that silica was successfully extracted from POFA by the
    alkaline fusion method.
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