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    Elaeis guineensis leaves extracts as eco-friendly corrosion inhibitor for mild steel in hydrochloric acid

    Access Status
    Open access via publisher
    Authors
    Asaad, M.
    Ismail, Mohamed
    Khalid, N.
    Huseien, G.
    Raja, P.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Asaad, M. and Ismail, M. and Khalid, N. and Huseien, G. and Raja, P. 2018. Elaeis guineensis leaves extracts as eco-friendly corrosion inhibitor for mild steel in hydrochloric acid. Jurnal Teknologi (Sciences and Engineering). 80 (6): pp. 53-59.
    Source Title
    Jurnal Teknologi (Sciences and Engineering)
    DOI
    10.11113/jt.v80.11191
    ISSN
    0127-9696
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/71383
    Collection
    • Curtin Research Publications
    Abstract

    This manuscript presents a study on a green corrosion inhibitor extracted from Elaeis guineensis (EG) leaves for mild steel (MS) exposed to acidic condition. Weight loss measurement was conducted at various temperatures to investigate the corrosion inhibitive behaviour of the aqueous extract in 1 M HCl solution. Results demonstrated that both inhibition efficiency (η%) and surface coverage (θ) had increased with increasing inhibitor concentration, but decreased with increasing temperature. After immersion for 72 h, the inhibition efficiency were between 60.48% at 319 K and 73.81% at 298 K. Adsorption of extract onto the MS surface was shown to obey Langmuir’s adsorption isotherm while the free energy value (𝝙Gads) indicated that the adsorption was characteristic of physisorption. Formation of a protective film onto the metal surface was substantiated by SEM and EDX analyses. The study demonstrated that EG leaves is a potential metal corrosion inhibitor in acidic condition.

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