Corrosion inhibiting effect of a green formulation based on Opuntia Dillenii seed oil for iron in acid rain solution
Malak Rehioui,
Said Abbout,
Bouchra Benzidia,
Hind Hammouch,
Hamid Erramli,
Naima Ait Daoud,
Narjis Badrane,
Najat Hajjaji
Affiliations
Malak Rehioui
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco; Corresponding author.
Said Abbout
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
Bouchra Benzidia
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
Hind Hammouch
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
Hamid Erramli
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
Naima Ait Daoud
Anti Poison and Pharmacovigilance Center of Morocco, Ministry of Health, Morocco
Narjis Badrane
Anti Poison and Pharmacovigilance Center of Morocco, Ministry of Health, Morocco
Najat Hajjaji
Laboratory of Materials, Electrochemistry and Environment (LMEE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
This study examines the development of a new green and eco-friendly formulation derived from Opuntia dillenii seed oil (labeled as FOD) and its application as a corrosion inhibitor to protect iron which is subject to corrosion phenomena that become important especially in acidic environments as acid rain.Physicochemical properties and fatty acid analysis of Opuntia dillenii seed oil were performed and they demonstrated that the oil is a major source of unsaturated fatty acids, in particular linoleic acid, with a percentage of 73.388%.Corrosion inhibition effect of FOD was studied by gravimetric methods, electrochemical measurements, and scanning electron microscopy coupled with elemental analysis (SEM/EDX). Obtained results confirmed that FOD behaves as a good mixed corrosion inhibitor with predominant anodic activity. Inhibition efficiency of FOD is more important when the concentration of FOD and the immersion time increase, reaching values up to 99%. FOD forms a barrier layer on the surface of the iron, and thereby minimizes the contact area between the metal surface and the corrosive solution. The adsorption behavior of FOD on iron surface obeys Langmuir adsorption isotherm with chemisorption and physisorption mechanism.
