Corrosion Inhibition of Pulverized Jatropha Curcas Leaves on Medium Carbon Steel in 0.5 M H2SO4 and NaCl Environments

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Author(s) Omotoyinbo, J.A. | Oloruntoba, D.T. | Olusegun, S. J.
Pages 510-514
Volume 2
Issue 7
Date July, 2013
Keywords Jatropha curcas, corrosion rate, inhibition efficiency, carbon steel

The inhibitive effect of pulverized Jatropha curcas leaves on the corrosion of medium carbon steel in 0.5M NaCl and 0.5M H2SO4 solutions was investigated using gravimetric technique of monitoring corrosion rate. The leaves were dried and ground to powder. The concentration of the extract used ranges from 0.5 – 2.5 g in 300 ml of 0.5 M NaCl and 0.5M H2SO4 solutions. The inhibition efficiency of 92.1 % was obtained from the 1.5 g of the pulverized Jatropha curcas leaves in NaCl solution, while 55.5 % efficiency was obtained from 2.5 g extract in H2SO4 solution. The overall results obtained indicated that Jatropha curcas leaves extract could be used as inhibitor against the corrosion of medium carbon steel in both the alkaline and acid solutions.

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