Determination of Adsorption Isotherm model best fit for methanol leaf extract of Securinega virosa as corrosion inhibitor for corrosion of mild steel in HCl

Authors

  • S. O. Adejo Benue State University, Makurdi
  • M. M. Ekwenchi University of Jos
  • J. A. Gbertyo Benue State University, Makurdi
  • T. Menengea Benue State University, Makurdi
  • J. O. Ogbodo Benue State Polytechnic, Ugbokolo, Benue State

DOI:

https://doi.org/10.24297/jac.v10i5.891

Keywords:

Adsorption isotherm, Mild steel, Securinega virosa, Adejo-Ekwenchi isotherm, Chemisorption

Abstract

The adsorption isotherm model best fit of the methanol leaf extract of Securinega virosa as corrosion inhibitor for the corrosion of mild steel in 2 M HCl medium was determined with the assistance of the Adejo-Ekwenchi adsorption isotherm. The corrosion inhibition study was carried out using the weight loss method at the temperature range of 301 K to 313 K.  The inhibition efficiency, %IE, of the extract was found to increase with increase in both concentration and temperature. On the account of, R2 this adsorption process well fitted into Langmuir, Freundlich, Temkin isotherm, Flory-Huggins and Adejo-Ekwenchi models. However, through the parameter b of the Adejo-Ekwenchi isotherm, which clearly shows the adsorption process to be chemisorption, the best isotherm fit for the extract has been resolved to be the Langmuir isotherm and Temkin isotherm models. 

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Author Biographies

S. O. Adejo, Benue State University, Makurdi

Department of Chemistry

M. M. Ekwenchi, University of Jos

Department of Pure and Industrial Chemistry

J. A. Gbertyo, Benue State University, Makurdi

Department of Chemistry

T. Menengea, Benue State University, Makurdi

Department of Chemistry

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Published

2014-06-03

How to Cite

Adejo, S. O., Ekwenchi, M. M., Gbertyo, J. A., Menengea, T., & Ogbodo, J. O. (2014). Determination of Adsorption Isotherm model best fit for methanol leaf extract of Securinega virosa as corrosion inhibitor for corrosion of mild steel in HCl. JOURNAL OF ADVANCES IN CHEMISTRY, 10(5), 2737–2742. https://doi.org/10.24297/jac.v10i5.891

Issue

Vol. 10 No. 5 (2014)

Section

Articles

License

Creative Commons License All articles published in Journal of Advances in Linguistics are licensed under a Creative Commons Attribution 4.0 International License.