Browsing by Author "Ayinde, I. V."
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Item Corrosion inhibition efficacy of hybrid organic extracts from prosopisafricana and citrulluslanatus on mild steel in acidic medium(Faculty of Engineering, “Dunarea De Jos” University of Galati Romania, 2023-03-15) SHUAIB-BABATA, Yusuf Lanre; Ayinde, I. V.; Busari, Y. O.; Ameen, M. O.; Yahya, R. A; Ambali, I. O.; Aremu, N. I.; Abdulraman, S. O; Ajao, K. S; Garuba, A. A.Each of Prosopis Africana pod extract (PAPE) and Citrulluslanatus (WMPE) performed quite well as green inhibitors in the electrochemical corrosion in acidic solution at ambient temperature in previous research. However, the hybridization of these compounds was varied with the concentration ratio in this study to optimize the efficiency of the green inhibitor in a hydrochloric acid medium using mild steel. The extraction process of the inhibitor samples was carried out with the Soxhlet apparatus using n-hexane as the solvent. Furthermore, the potential inhibition efficiency was monitored using various corrosion measurement techniques at room temperature. The inhibitive response of the extracts could be attributed to the adsorption of the extracts’ components on mild steel surface by physisorption mechanism according to the Langmuir adsorption isotherm model. The results revealed that inhibition efficiency (IE%) depends on the concentration of the extracts. The peak IE% values were obtained with a hybrid ratio of 3:1 (PAPE: WMPE) for gravimetric technique. The Tafel polarization and gasometrical measurement technique is 96.7%, 98.5% and 83.1% respectively at the concentration of 1.0 g/L, which are above the peak IE% for PAPE (93.7%, 80.96% and 77.8%) and WMPE (92.7%, 80.5% and 75.6%)Item Performance and Corrosion Inhibitive Mechanism of Prosopis Africana Pod Extracts on Mild Steel in Acidic Medium(Faculty of Engineering, University of Port Harcourt, Nigeria, 2022) Ayinde, I. V.; Ameen, M. O.; Busari, Y. O.; Ambali, I. O.; Abdulraman, S. O.; Ajao, K. S.This study investigates the influence of Prosopis Africana pod extract (PAPE) on corrosion behavior of mild steel in 1.0 M HCl. The Prosopis African Seed Extract (PASE) was previously characterized as a green corrosion inhibitor without considering its pod, which often constitutes environmental pollution. The PAPE solution was administered in varying concentrations of 0.0 g/ml to 10.0 g/ml as a green inhibitor of mild steel in 1M Hydrochloric (HCl) medium at room temperature using gravimetric, gasometric and electrochemical (Tafel Polarization) techniques. The volume of hydrogen evolution determined with gasometric process decreases as the concentration of the extract increases. The gravimetric technique recorded the highest inhibition efficiency (IE%) of 97.14% with a 1.0g/l concentration of PAPE. The electrochemical measurements of the corrosion current density (ICorr) decreased as the concentration of PAPE increased, with a maximum IE% of 80.59% (PAPE) at 1.0g/l recorded. Generally, IE% increases with the concentration of the extract. The decrease in the corrosion rate is caused by the intensified obstructive mechanism in the coupon surfaces instigated by the pod extract's adsorption. Hence, the extract from Prosopis Africana Pod is equally suitable as a green inhibitor for corrosion.