Title of article
Olive mill wastewaters extract as sustainable mild steel corrosion inhibitor in 1.0 M HCl
Author/Authors
ebich, f. university ibn tofail - faculty of sciences - laboratory of agroresources and process engineering, Kénitra, Morocco , ramdan, r. ibn tofaïl university - faculty of science - laboratory of genetics and biometrics, Kenitra, Morocco , saadouni, m. ibn tofaïl university - faculty of science - laboratory of organic, organometallic and theoretical chemistry, Kenitra, Morocco , el aoufir, y. ibn tofail university - faculty of science - laboratory of separation processes, Kenitra, morocco , el aoufir, y. mohammed v university - faculty of sciences - materials, nanotechnology and environment laboratory, Rabat, Morocco , chaouiki, a. university of ibn zohr - ensa - laboratory of environmental engineering and biotechnology, Agadir, Morocco , chaouiki, a. ibn tofail university - faculty of science - laboratory of separation processes, Kenitra, Morocco , skal, s. mohammed v university - faculty of sciences - materials, nanotechnology and environment laboratory, Rabat, Morocco , zarrouk, a. université mohammed 1^ er - faculté des sciences - lcae, urac18, Oujda, Morocco , oudda, h. ibn tofail university - faculty of science - laboratory of separation processes, Kenitra, Morocco , essamri, a. university ibn tofail - faculty of sciences - laboratory of agroresources and process engineering, Kénitra, Morocco
From page
1779
To page
1786
Abstract
The polyphenol extract (PPE) from olive mill wastewaters was prepared and evaluated as corrosion inhibitor for mild steel in 1.0 M HCl solution using weight loss tests, polarization and electrochemical impedance spectroscopy measurements. By fitting the gravimetric data, some kinetic parameters were estimated. The adsorption of the inhibitor on the mild steel surface obeyed Langmuir adsorption isotherm. Polarization measurements showed that the inhibitor acts as mixed inhibitor for mild steel in the acidic media. The inhibition efficiency was found to increase with a corresponding increase in the PPE concentration, and the best inhibition of 89% occurred at a PPE concentration of 4 g/L. The results of the corrosion inhibition using three different methods showed narrow differences in the obtained values between the three methods.
Keywords
Olive mill wastewaters , Corrosion inhibition , Mild steel , HCl, Electrochemical methods
Journal title
Journal of Materials and Environmental Science
Journal title
Journal of Materials and Environmental Science
Record number
2583347
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