Musa Paradisiaca (Plantain) Stem Sap Extract as a Potential Corrosion Inhibitor on Mild Steel in Acid Medium


Authors : Ekeke, I. C; Umosah, S. O; Nkwocha, A. C.

Volume/Issue : Volume 6 - 2021, Issue 12 - December

Google Scholar : http://bitly.ws/gu88

Scribd : https://bit.ly/3JESbuR

This project compared both mechanically/manually extracted Musa paradisiaca stem sap sample and Soxhlet extracted sample. The result of the project shows that the average weight loss of the mild steel generally increased with a corresponding increase in time for both inhibited and uninhibited samples. Very low corrosion rate values were observed with the samples containing the inhibitor as compared to those without any inhibitor for both methods of extraction. Inhibition efficiency increased generally with increase in inhibitor concentration with optimum efficiencies of 76.43% for the manually extracted sap and 87.07% for the Soxhlet extracted sap. It was also established that Langmuir adsorption model best fit the experimental results with the manually extracted sample giving an RSquared value of 0.9933 and the Soxhlet extracted sample giving an R-Squared value of 0.7331 after comparison of four different adsorption isotherms (Langmuir, Temkin, Freudlich and Florry-Huggins) at room temperature (27°C). The results obtained showed that the Soxhlet extracted sap was more efficient than the mechanically extracted sap.

Keywords : Musa paradisiaca; stem sap; corrosion inhibitor; mild steel.

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