Corrosion Inhibition and Adsorption Characteristics of Myrianthus arboreus Leaves Extract on Copper in Sulphuric Acid Solution

Main Article Content

G. I. Udom
G. A. Cookey
A. A. Abia

Abstract

The inhibiting action of Myrianthus arboreus leaves extract on the corrosion of copper in sulphuric acid solution was assessed using weight loss method at various temperatures. It was observed that the extract inhibited the acid-induced corrosion of copper and the corrosion rate decreased in the presence of the inhibitor as compared to the blank. Inhibition efficiency was found to increase with increasing concentration of the extract and temperature. Kinetic study of the data followed a first-order reaction. Thermodynamics study revealed that the corrosion inhibition might be due to spontaneous adsorption of the leaves constituents on the metal surface. The adsorption of the extract on copper surface was found to obey Freundlich and Temkin adsorption isotherms.

Keywords:
Copper, corrosion inhibition, Myrianthus arboreus, weight loss, adsorption, thermodynamic, kinetics

Article Details

How to Cite
Udom, G. I., A. Cookey, G., & A. Abia, A. (2018). Corrosion Inhibition and Adsorption Characteristics of Myrianthus arboreus Leaves Extract on Copper in Sulphuric Acid Solution. Chemical Science International Journal, 23(3), 1-13. https://doi.org/10.9734/CSJI/2018/41304
Section
Original Research Article