Author/Authors :
el mostaphi, a. university ibn tofail - faculty of sciences - laboratory of agro-physiology, biotechnologies, environment and quality, department of biology, Kénitra, Morocco , larouj, m. university ibn tofail - faculty of sciences - laboratory of separation processes, Kenitra, Morocco , hartiti, h. university ibn tofail - faculty of sciences - laboratory of agro-physiology, biotechnologies, environment and quality, department of biology, Kénitra, Morocco , barrahi, m. university ibn tofail - faculty of sciences - laboratory of agro-physiology, biotechnologies, environment and quality, department of biology, Kénitra, Morocco , galai, m. university ibn tofail - laboratory of electrochemistry, the corrosion and of environment, Kenitra, Morocco , ebntouhami, m. university ibn tofail - laboratory of electrochemistry, the corrosion and of environment, Kenitra, Morocco , oudda, h. university ibn tofail - faculty of sciences - laboratory of separation processes, Kenitra, Morocco , ouhssine, m. university ibn tofail - faculty of sciences - laboratory of agro-physiology, biotechnologies, environment and quality, department of biology, Kénitra, Morocco
Abstract :
Natural substances have been the subject of numerous researches in biology and chemistry to determine their potential biological and chemical activities. Their application as corrosion inhibitors is increasingly being seen as an important strategy. In the present work, we studied the effect of essential oil of Apium graveolensL. (Celery), which is recognized in the medical field by its analgesic, anti-inflammatory, and antibacterial among others; on corrosion of carbon steel C35 (CS) in a 1.0 M HCl environment using electrochemical and quantum chemical calculations techniques. With the objective of determining the most active component of its constituents and, which of them contributes most to the inhibition of corrosion, we conducted the extract from the oil of celery grains. The results obtained showed a very good improvement in the resistance of the CS in hydrochloric medium. We investigated the effect of certain parameters (concentration, temperature and immersion time) on celery inhibition efficiency. The results obtained show that the addition of celery to the aggressive solution slows down the corrosion process and that the inhibitory efficiency is increasing with the inhibitor concentration.
Keywords :
Apium graveolens L , Celery , Corrosion inhibition , HCl , Carbon steel , Density Functional Theory
