Corrosion Inhibition of Mild Steel using Bee Pollen as inhibitor in acidic medium

Abstract

The inhibitive action of bee pollen on corrosion of mild steel in two different acid media (HCl and H₂SO₄) was investigated using weight  loss gravimetric method. By obtaining the mild steel, which were cut and sized into 2-2 cm² coupons, the coupons were grouped into  three groups A, B and C. The weight of the coupons was measured before and after immersion into acid solutions. Effect of inhibitor, time  and temperature on different acid concentration was also investigated. Scanning electron microscope (SEM) and Fourier-transform  infrared spectroscopy (FTIR) were employed to analyse the inhibition of bee pollen on mild steel. The study reveals that the percentage  inhibition efficiency (%IE) is enhanced with decreased in corrosion rate as well as increase in volume of bee pollen. High inhibition   efficiency of 90.9% was attained.