Inhibition of mild steel corrosion in sulphuric acid using ceiba pentandra seed extract

The inhibitive effect of Ceiba Pentandra (CP) seed extract on the corrosion of mild steel in Sulphuric acid was investigated using gravimetric, potentiodynamic and electrochemical impedance spectroscopy (EIS) techniques. The results showed that CP seed extract could serve as effective inhibitor for corrosion of mild steel in Sulphuric acid. The percentage inhibition increased with increasing concentration of the extract at room temperature. Maximum inhibition efficiency of 90% was obtained with 0.5% v/v concentration. The inhibition efficiencies obtained from impedance and polarization measurements were in good agreement. Poteniodynamic polarization studies clearly revealed the mixed behaviour of the CP seed extract. The studies showed that the inhibition efficiency was significantly affected by the temperature of the medium.