Evaluation of the Inhibitory Effectiveness of Cyperus articulatus Essential Oils on the Corrosion of Structural Steelwork in Hydrochloric Acid Solution

Comparative Study of S235 Steel Corrosion Inhibition by <i>Eucalyptus camaldulensis</i> and <i>Cyperus rotundus</i> Essential Oils in Hydrochloric Acid Solution

“…Similar results have frequently been reported for essential oils inhibitors for steel in HCl solution [18,19,23]. In a previous work, we showed that a physicochemical adsorption was more probable in the case of Cyperus articulatus essential oils in hydrochloric acid solution [29]. It was however revealed by Sathiyanarayanan et al [66] that adsorption of inhibitors to anodic sites follows chemical adsorption and adsorption to anodic sites is due to electrostatic attraction.…”

“…The chromatograph was equipped with an Optima 5-accent type, 5% phenylmethylsiloxane capillary column: 30 mL, 0.25 mm ID, 0.25 µm film thickness (Macherey-Nagel, Düren-Germany). The detailed procedure for the GC-MS analysis (operating conditions, temperature adjustment and identification procedure) is described elsewhere [29].…”

“…In the same vein, in recent years a major importance was given to the use of essential oils as corrosion inhibitors. According to the literature, many studies have mentioned the good inhibitory effectiveness of essential oils on the corrosion of steel in acidic environment (hydrochloric and sulfuric) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Evaluation of the inhibitory action of essential oil from Eucalyptus globulus leaves on the corrosion of mild carbon steel in 1M HCl medium

“…These studies resulted in inhibitory efficiencies of up to 70% for volcanic clay tuffs and up to 62% for montmorillonite. Various studies have also been carried out on the evaluation of the inhibitory efficiencies of natural compounds such as natural oils and essential oils extracted from various parts of plants, we can give the example of the work carried out by K. Cissé et al [12], on the evaluation of the inhibitory effectiveness of the essential oil of Cyperus articulatus on the corrosion of S235 steel in HCl medium and their studies resulted in an optimal inhibitory efficacy of 92%. Although other inhibitor types essential oils have been developed in recent years, such as Eucalyptus camaldulensis and Cyperus rotundus essential oils [13], but also chamomile essential oil [14], Mentha pulegium essential oil [15], prickly pear seed oil [16], essential oil extracted from Carum carvi L species [17], etc.…”

Evaluation of Corrosion Inhibition of Essential Oil-Based Inhibitors on Aluminum Alloys

“…Phytochemicals with different heteroatoms for instance sulfur, nitrogen, and oxygen in the form of heterocyclic rings and polar groups have been extensively examined for corrosion inhibition. − Essential oils are more promising owing to their low toxicity, from the environmental viewpoint. In recent years, numerous authors − reported that essential oils can displace chloride ions from the solution–metal interface because of the competitive adsorption, and these adsorbed layers act as defensive barriers. Dahmani et al reported the importance of cinnamon essential oil in suppressing the cathodic activity of copper in acidified sodium chloride (NaCl) solution.…”