Greener Journal of Physical Sciences

Open Access

Salami et al

Greener Journal of  Physical Sciences  Vol. 5 (1), pp. 001-010, January 2015.  

ISSN: 2276-7851 © 2015 Greener Journals

Research Paper

Manuscript Number: 012513410


DOI: http://doi.org/10.15580/GJPS.2015.1.012513410


Comparative Adsorption Mechanism of Musa Sapientum Peels Extracts for Green Corrosion Inhibition of Mild Steel in Sulphuric Acid

 

1*Salami L., 2Fadayini O.M. and 3Olafadehan O.A.

 

1Department of Chemical and Polymer Engineering, Lagos State University, Epe, Lagos, Nigeria.

2Department of Chemical Engineering, Lagos state Polytechnic, Ikorodu, Lagos, Nigeria.

3Department of Chemical Engineering, University of Lagos, Akoka, Yaba, Lagos, Nigeria.


Abstract


The production of green corrosion inhibitors from locally sourced organic wastes makes environmental friendly corrosion inhibitor available. The aim and objective of this is to produce corrosion inhibitor from local Musa Sapientum Peels with a perspective of establishing the kinetics of the adsorption of Musa Sapientum Peels extract on mild steel bar in 2.0M sulphuric  acid. Musa Sapientum Peels extract produced was used as a corrosion inhibitor on mild steel bar in concentrated sulphuric acid using weight loss method. The results showed that the concentration of corrosion inhibitor is directly proportional to inhibitor efficiency and surface coverage but inversely proportional to weight loss of mild steel bar. Langmuir Isotherm, Freundlich Isotherm and Kinetic – Thermodynamic model predicted the kinetics of the ethanol extract of Musa Sapientum peels used as a corrosion inhibitor of mild steel bar while Linear isotherm did not. Among the three isotherms that predicted the results, Freundlich has the best correlation than Langmuir and Kinetic – Thermodynamic model based on the value of the goodness fit.

 

Keywords: adsorption, corrosion inhibitor, musa sapientum, mild steel, sulphuric acid.

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