Optimization of Katemfe Seed Extract as A Corrosion Inhibitor for Mild-Steel in 0.5M Hcl

Olawale, O. and OGUNSEMI, B.T. and Abayomi, S. J. and Uguru-Okorie, D.C and Okunola, Abiodun A. and Oni, S. O. and Kolawole, O. D. and Ikpotokin, I. (2018) Optimization of Katemfe Seed Extract as A Corrosion Inhibitor for Mild-Steel in 0.5M Hcl. International Journal of Civil Engineering and Technology, 9 (13). pp. 1394-1402.

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Abstract

Optimization of the inhibiting effect of the Katemfe Seed extract on the mild steel in 0.5M HCl was investigated using gravimetric method. Phytochemical analysis was done to determine the qualitative tests of the extract. The factor variables used for the Central Composite design were Temperature 30-60, Time: 1-5 h and Concentration: 0.2-1.0 g/L respectively. The analysis showed that a linear effect of the process variables was highly significant. The optimum conditions predicted were Temp: 54.65oC, Time: 2.54 h and Concentration: 0.33 g/l; and the optimum corrosion rate condition was predicted 1.0 (mg/〖cm〗^2 h). The experimental value of 1.5 (mg/〖cm〗^2 h) agreed closely with that obtained from the regression model. This study revealed that Katemfe seed extract is a good inhibitor for the corrosion of Mild steel in 0.5M HCl and the performance can be improved by moderating the process variables.

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