Corrosion Inhibitor by Leaves Extract of Launaea taraxacifolia (Wild Lettuce) for Mild Steel in 1M Hydrochloric Acid (HCl) Solution

Titilayo Jesusina & Iyabode Adejumobi, Volume 5 Issue 1, July 2024 Pages 49-55, Published: 2024-04-24

Abstract

Corrosion is the destructive attack on metals or alloys in our environment. The corrosion inhibition potentials of Launaea taraxacifolia Leaves Extract (LTLE) were assessed using weight loss techniques. The influence of extract concentrations (0.2, 0.4, 0.6, 0.8 & 1.0g/l) and temperatures (303, 313, 323, and 333 K) on corrosion and corrosion inhibition was analyzed. The inhibitory effect of ethanol extract of Launaea taraxacifolia Leaves (LTL) on the corrosion of mild steel in an acidic medium was investigated by gravimetric and electrochemical techniques. Investigation carried out on inhibition efficiency on mild steel shows that 94.6% was achieved at 303K. The findings demonstrated that the corrosion rate decreases as LTLE concentration rises and inhibitory efficacy was explained in terms of adsorption and the creation of protective films. With longer exposure times and higher inhibitor concentrations, the inhibition process interacts with the mild steel surface and reduces the rate of corrosion. The procedures employed yielded consistent findings, indicating the extract's potential to suppress mild steel corrosion in 1M HCl. Because of the phytochemicals—saponin, flavonoids, glycosides, and tannins—found in the leaf extract, the LTE effectively inhibits mild steel corrosion. L. taraxacifolia is a renewable and biodegradable source of material that is environmentally benign and does not harm the environment. The inhibitor may find use in surfaces of metals or alloys