Evaluation of the Methanolic Extract of Petroselinum Crispum (Parsley) as Antioxidant and Green Corrosion Inhibitor for Carbon Steel Alloy in Acidic Medium
Keywords:
Parsley, Hydrochloric acid, Green corrosion inhibitorAbstract
In this study, Petroselinum Crispum (Parsley) leaves were extracted by methanol 70% solvent using the maceration extraction method. The extract was examined as a green corrosion inhibitor for carbon steel alloy (C1010) in 0.1 M Hydrochloric acid at different concentrations and temperatures. The extract showed the highest inhibition efficiency of 97.12% at 25. The inhibitor’s efficiency was reduced when the temperature increased. Kinetic parameters (Ea, ΔH*, and ΔS*) were calculated. The corrosion reaction was repressed by the extract, because the energy barrier of the corrosion reaction was increased, and it became an endothermic process. On the other hand, antioxidant activity was also studied by in vitro DPPH assay through different concentrations. Thus, the methanol extract of Petroselinum Crispum (Parsley) can be used as a green corrosion inhibitor because it doesn’t contain toxic compounds
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