Evaluation of the Inhibitory Properties of Guiere Senegale on the Corrosion of Mild Steel in 0.1M Hydrochloric Acid

Adams A. D., Magaji Y. I., Hassan S., Uwaiya E., Obasi O. Q., Pascalina L., Okeh A.

Abstract


This study was aimed at evaluating some properties exhibited by Guiere senegale when used as green inhibitors on corrosion of mild steel in an acidic medium. The effect of various parameters which include: exposure time, inhibitor concentration and temperature; on the inhibition efficiency of Guiere senegale was studied. Mild steel samples were immersed in 100 ml solution containing 0.1 M HCl solution in the absence and presence of varying inhibitor concentrations (0.2 g/dm3, 0.4 g/dm3 0.6 g/dm3, 0.8 g/dm3, 1.0 g/dm3 and 1.2 g/dm3) of plant inhibitor (Guiere senegale leaves extract. A weight loss technique was adopted and recorded at a time range of 6 to 24 hours and a temperature range of 313 K to 343 K. The best inhibition efficiency for the plant extract was 96.653 % at 1.2 g/dm3 and 313 K. The least inhibition efficiency for the plant extract was 45.293% obtained at 0.2 g/dm3 and 343 K. From the result of the study, Guiere senegale has proven to be a very good green alternative to inorganic corrosion inhibitors because it is highly efficient, readily available, cheap and biodegradable.


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