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The inhibitive action of chitosan extracted from Archachatina marginata shells on the corrosion of plain carbon steel in acid media

The inhibitive action of chitosan extracted from Archachatina marginata shells on the corrosion... Purpose – The purpose of this investigation was to study the inhibitive action and adsorption potential of chitosan extracted from Archachatina marginata snail shells on the corrosion of plain carbon (mild) steel in acid media. Design/methodology/approach – Weight loss and thermometric methods were used during this investigation. Characterization of the obtained chitosan was accomplished with Fourier transform infrared spectroscopy analysis. The effects of parameters influencing the inhibition process (concentration and temperature) were evaluated, and the sorption isotherms and thermodynamic parameters were derived. Findings – The results obtained showed that chitosan has good inhibition potential with an efficiency of 93.2 per cent. The inhibition efficiency decreased with an increase in temperature but increased with increasing concentration of chitosan. Test results best fitted the Langmuir Isotherm with a correlation coefficient ( R 2) of 0.999. The thermodynamic parameters studied reveal that the adsorption of chitosan on the surface of mild steel is spontaneous. Originality/value – The paper fulfills an identified need in finding solutions to the problems of metal corrosion using agricultural wastes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

The inhibitive action of chitosan extracted from Archachatina marginata shells on the corrosion of plain carbon steel in acid media

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References (22)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0003-5599
DOI
10.1108/ACMM-10-2013-1307
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this investigation was to study the inhibitive action and adsorption potential of chitosan extracted from Archachatina marginata snail shells on the corrosion of plain carbon (mild) steel in acid media. Design/methodology/approach – Weight loss and thermometric methods were used during this investigation. Characterization of the obtained chitosan was accomplished with Fourier transform infrared spectroscopy analysis. The effects of parameters influencing the inhibition process (concentration and temperature) were evaluated, and the sorption isotherms and thermodynamic parameters were derived. Findings – The results obtained showed that chitosan has good inhibition potential with an efficiency of 93.2 per cent. The inhibition efficiency decreased with an increase in temperature but increased with increasing concentration of chitosan. Test results best fitted the Langmuir Isotherm with a correlation coefficient ( R 2) of 0.999. The thermodynamic parameters studied reveal that the adsorption of chitosan on the surface of mild steel is spontaneous. Originality/value – The paper fulfills an identified need in finding solutions to the problems of metal corrosion using agricultural wastes.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Jan 5, 2015

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