EFFECT OF ALOE VERA EXTRACT AS A GREEN CORROSION INHIBITOR ON IRON METAL IN HYDROCHLORIC ACID (HCl) ENVIRONMENT

Corrosion is a chemical curse that poses a serious problem to both industry and daily life. Iron is widely consumed by various industries due it's attractive mechanical properties and low-cost availability. The Research paper focuses on the anticorrosive behavior of aloe vera extract as an eco-friendly green corrosion inhibitor for iron metal in aggressive acidic environment for a 3-day corrosion test. 2M Hydrochloric acid (HCl) is used to prepare a bit aggressive acidic environment. Inhibiting property of Aloe vera is due to presence of various bioactive compounds such as Polysaccharides, Anthraquinones, Saponins, Amino acids and Phenolic compounds. By gravimetric analysis (weight loss method), the inhibition efficiency of aloe vera extract was determined over a duration of 3 days. Iron strips were immersed in acidic environment at various volumetric concentrations of inhibitor i.e. 20%, 40%, 60%, and 80% respectively. The results shows that the maximum inhibition efficiency of approximately 56.72% is achieved at 80% v/v inhibitor concentration for 24 hrs exposure time.