Degradation Evaluation of Zinc m 2 M Hydrochloric Acid m the Presence of Bambusa bambos

Omotosho, O. A. and Ajayi, O. O. and Fayomi, O. S. I and Yussuff, O.O. (2012) Degradation Evaluation of Zinc m 2 M Hydrochloric Acid m the Presence of Bambusa bambos. Singapore Journal of Scientific Research, 2 (1). pp. 14-24. ISSN 2010-006x

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Abstract

Failure evaluation of zinc sample in 2 M hydrochloric acid solution in the presence of Bambusa bambos extract was conducted using the gasometric method. Zinc coupons, each measuring 2.5 by 1.5 em were completely immersed in uninhibited and inhibited test solutions containing extract quantities of 60, 100 140 and 180 mL at a temperature of 298 K for 20 minutes. The volumes of hydrogen gas data obtained during the experiment were documented and analyzed. Results showed that maximum inhibitor efficiency and lowest corrosion rate were obtained at extract quantities of 140 and 100 mL, respectively while corrosion rate reduction did not follow any particular trend. Frumkin isotherm best explained the extract-metal surface interaction adsorption mechanism. Once quantity of the extract is known, an expression for estimating corrosion rate values was also obtained. In addition, the surface analysis indicated that the rate of deterioration of the metal reduced as extract quantity increased to some extent and changed thereafter.

Item Type:	Article
Uncontrolled Keywords:	Gasometric, hydrogen evolution, corrosion, HCl, metal-phytochemical interaction mechanism
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	05 Oct 2017 10:39
Last Modified:	05 Oct 2017 10:39
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/9464

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