Corrosion Inhibition of Mild Steel in 1M H2SO4 Solution by Microdesmis puberula Leaf Extract
Okon U. Abakedi, James E. Asuquo
Chemical Science International Journal · pp. 1–8 · Published 13 Aug 2016
10.9734/ACSJ/2016/28419Abstract
The inhibition of mild steel corrosion in 1M H2SO4 solution by Microdesmis puberula leaf extract was studied by weight loss and hydrogen evolution methods. Results obtained show that Microdesmis puberula leaf extract was a good inhibitor of mild steel corrosion in sulphuric acid solution. The inhibition efficiency increased with increase in Microdesmis puberula leaf extract concentration and temperature. The inhibition efficiencies by both weight loss and hydrogen evolution methods were in good agreement. The calculated thermodynamic parameters revealed that the corrosion inhibition process was both endothermic and spontaneous. Microdesmis puberula leaf extract adsorbed chemically onto mild steel surface in conformity with the Langmuir adsorption isotherm.
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