UAE Rhazya Stricta Decne extract as a corrosion inhibitor for mild steel in HCl solution

UAE Rhazya Stricta Decne extract as a corrosion inhibitor for mild steel in HCl solution Purpose – This study aims to study electrochemically and by weight‐loss experiments the effect of UAE Rhazya Stricta Decne extract on the corrosion inhibition of mild steel in 1.0 M HCl solution, which will serve researchers in the field of corrosion. Design/methodology/approach – Weight loss measurements were carried out on mild steel specimens in 1.0 M HCl and in 1.0 M HCl containing various concentrations (ranging from 2.0 to 0.002 g/L.) of the UAE Rhazya Stricta Decne extract at temperatures ranging from 303 to 343 K. Findings – The aqueous Rhazya Stricta Decne leaves extract was found to be a highly efficient inhibitor for mild steel in 1.0 M HCl solution, reaching about 90 per cent at 2.0 g/L and 303 K, a concentration considered to be very moderate. Even with one‐tenth of that concentration, 0.2 g/L, an inhibition of about 82 per cent was obtained at 303 K. The rate of corrosion of the mild steel in 1.0 M HCl is a function of the concentration of the Rhazya Stricta Decne extract. This rate increases as the concentration of the Rhazya Stricta Decne extract is increased. The percentage of inhibition in the presence of this inhibitor was decreased with temperature which indicates that physical adsorption was the predominant inhibition mechanism because the quantity of adsorbed inhibitor decreases with increasing temperature. Practical implications – This inhibitor could have application in industries, where HCl solutions at elevated temperatures are used to remove scale and salts from steel surfaces, such as acid cleaning of tankage and pipeline, and may render dismantling unnecessary. Originality/value – This paper is intended to be added to the family of green corrosion inhibitors which are highly efficient and can be used in the area of corrosion prevention and control. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

UAE Rhazya Stricta Decne extract as a corrosion inhibitor for mild steel in HCl solution

Anti-Corrosion Methods and Materials, Volume 61 (4): 6 – May 27, 2014

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Publisher
Emerald Publishing
Copyright
Copyright © 2014 Emerald Group Publishing Limited. All rights reserved.
ISSN
0003-5599
DOI
10.1108/ACMM-04-2013-1252
Publisher site
See Article on Publisher Site

Abstract

Purpose – This study aims to study electrochemically and by weight‐loss experiments the effect of UAE Rhazya Stricta Decne extract on the corrosion inhibition of mild steel in 1.0 M HCl solution, which will serve researchers in the field of corrosion. Design/methodology/approach – Weight loss measurements were carried out on mild steel specimens in 1.0 M HCl and in 1.0 M HCl containing various concentrations (ranging from 2.0 to 0.002 g/L.) of the UAE Rhazya Stricta Decne extract at temperatures ranging from 303 to 343 K. Findings – The aqueous Rhazya Stricta Decne leaves extract was found to be a highly efficient inhibitor for mild steel in 1.0 M HCl solution, reaching about 90 per cent at 2.0 g/L and 303 K, a concentration considered to be very moderate. Even with one‐tenth of that concentration, 0.2 g/L, an inhibition of about 82 per cent was obtained at 303 K. The rate of corrosion of the mild steel in 1.0 M HCl is a function of the concentration of the Rhazya Stricta Decne extract. This rate increases as the concentration of the Rhazya Stricta Decne extract is increased. The percentage of inhibition in the presence of this inhibitor was decreased with temperature which indicates that physical adsorption was the predominant inhibition mechanism because the quantity of adsorbed inhibitor decreases with increasing temperature. Practical implications – This inhibitor could have application in industries, where HCl solutions at elevated temperatures are used to remove scale and salts from steel surfaces, such as acid cleaning of tankage and pipeline, and may render dismantling unnecessary. Originality/value – This paper is intended to be added to the family of green corrosion inhibitors which are highly efficient and can be used in the area of corrosion prevention and control.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: May 27, 2014

Keywords: Corrosion; Inhibitors; “Mild” steel; Rhazya Stricta Decne ; Azadirachta indica ; Inhibitor; Weight loss; Corrosion; Temkin adsorption isotherm

References

  • Study of low cost eco‐friendly compounds as corrosion inhibitors for cooling systems
    Farooqi, I.H.; Hussain, A.; Quraishi, M.A.; Saini, P.A.
  • The effect of some phthalimide derivatives on the corrosion behaviour of copper in nitric acid
    Fouda, A.S.; Abd El‐Aal, A.; Kandil, A.B.
  • Inhibitive action of Carica papaya extracts on the corrosion of mild steel in acidic media and their adsorption characteristics
    Okafor, P.C.; Ebenso, E.E.
  • Corrosion control by water‐soluble extracts from leaves of economic plants
    Rehan, H.H.

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