African Journal of Pure and Applied Chemistry
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Article Number - 16816131144


Vol.7(8), pp. 302-309 , August 2013
DOI: 10.5897/AJPAC2013.0510
ISSN: 1996-0840



Full Length Research Paper

Uvaria chamea root as green corrosion inhibitor for mild steel in acidic solution


Lebe A. Nnanna1*, Onyinyechi C. Nwadiuko1, Francis O. Nwosu1, David O. Dimoji2and Kingsley I. Mejeh3




 

1Department of Physics/Electronics, Abia State Polytechnic, P. M. B. 7116, Aba, Nigeria.

2School of Industrial Technology, Abia State Polytechnic, P. M. B. 7116, Aba, Nigeria.

3Department of Welding/Fabrication, Abia State Polytechnic, P. M. B. 7116, Aba, Nigeria.


Email: lebennanna@yahoo.com






 Accepted: 20 August 2013  Published: 31 August 2013

Copyright © 2013 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


 

The corrosion inhibition of mild steel is the subject of tremendous technological importance due to the increased industrial applications of these materials. This study reports the corrosion inhibition of mild steel in acidic solution of 0.5 M HCl using root extract of Uvaria chamea by way of gravimetric measurements. It was shown that the presence of U. chamea root extract inhibited the corrosion of mild steel in the test solution and the inhibition efficiency depended on the concentration of the plant extract as well as on the time of exposure of the mild steel samples in HCl solutions containing the extract. The experimental data complied to the Langmuir and Temkin adsorption isotherms. From the results obtained authenticates that the root extracts of U. chameafavours both cathodic and anodic inhibitor. The adsorption mechanism is both chemisorptions and physisorption.

 

Key words: Corrosion inhibition, mild steel, adsorption mechanism, Uvaria chamea, Langmuir and Temkin isotherms.

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APA (2013). Uvaria chamea root as green corrosion inhibitor for mild steel in acidic solution. African Journal of Pure and Applied Chemistry, 7(8), 302-309.
Chicago Lebe A. Nnanna, Onyinyechi C. Nwadiuko, Francis O. Nwosu, David O. Dimojiand Kingsley I. Mejeh. "Uvaria chamea root as green corrosion inhibitor for mild steel in acidic solution." African Journal of Pure and Applied Chemistry 7, no. 8 (2013): 302-309.
MLA Lebe A. Nnanna, et al. "Uvaria chamea root as green corrosion inhibitor for mild steel in acidic solution." African Journal of Pure and Applied Chemistry 7.8 (2013): 302-309.
   
DOI 10.5897/AJPAC2013.0510
URL http://academicjournals.org/journal/AJPAC/article-abstract/16816131144

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