Titilayo Ige Jesusina & Khadijah Tolulope Dauda

Using gravimetric analysis, potentio-dynamic, and adsorption isotherm techniques we researched how mild steel corrodes in 1M hydrochloric acid, in the presence of varying amounts of ethanol extract of Launaea taraxacifolia (wild lettuce). Effect of inhibitor concentrations (0.1, 0.3, 0.5 and 0.7g/l), temperatures (303K, 323K) at various immersion times were evaluated on the inhibition efficiency (%IE) of the extract on mild steel submerged in IM HCl solution. The weight loss increased with increasing temperature and exposure time, according to the findings. According to the gravimetric measurements, the weight loss was lowest on mild steel at 303 K and 0.7 g/l. The inhibitor's effectiveness improved as the inhibitor concentration grew. The results show that Launaea taraxacifolia worked well as a corrosion inhibitor. According to the electrochemical data, the examined molecule functions as a mixed-type inhibitor. The inhibitory efficiency values derived using these techniques accord rather well. The inhibitory compound's adsorption was discovered to follow Langmuir isotherms. Launaea taraxacifolia leaf extract exhibited outstanding inhibitory properties due to the presence of phytochemicals. Launaea taraxacifolia leaves extract demonstrated its ability to inhibit corrosion in green environments. Keyword: Adsorption isotherm; corrosion; inhibitors; gravimetric; potentiodynamic0150