Chemical, Electrochemical and Computer Simulated Concept Of 2-Heptanone and 2 Tridecene As Corrosion Control for Mild Steel in Acidic Media.

Abstract

Gravimetric and electrochemical methods were utilized to examine the performance of dacryodes edulis seed extract (DESE) as anti corrosion agents for mild steel in HCL and H2SO4 solutions .The results generated from gravimetric technique show that inhibition efficiencies (IE) raised as the concentration of the extract increases. Potentiodynamic Polarization Parameters show that DESE acts as a mixed type inhibitor. The values obtained from active capacitance by using electrochemical impedance parameters in the two acidic media are within the thresh hold of double layer capacitance. The anti corrosion efficiency was evidenced by the adsorption of the DESE components on the surface of mild steel which was approximated by Langmuir adsorption isotherm model. The mechanism of the corrosion inhibition was evaluated from the temperature and concentration reliance of the inhibition efficiencies, in addition to the spectroscopic results. RSM results established an optimal IE of 97.5 % and 93.20 % at ideal concentrations of 1.2 gl-1,temperature of 303k and time of 12h for both media. The theoretical modeling shows that 2-heptanone and 2-tridecene were the major bioactive constituents of dacryodes edulis seed extract accounting for the inhibition hindrance process. Furthermore, scanning electron microscope analysis confirmed adsorption of the extract molecules on the surface of the mild steel.

Keywords

• Nze S.M.
  Department Of Chemical Engineering, Nekede Polytechnic, Nekede, Imo,State
• Adinnu E.C.
  Department Of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu Universtiy,Anambra State,Nigeria
• Ezeugo J.O.
  Department Of Chemical Engineering,Nnamdi Azikwe University Awka, Anambra State,Nigeria
• Onukwuli O. D.

Affiliations: Department Of Chemical Engineering, Nekede Polytechnic, Nekede, Imo,State; Department Of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu Universtiy,Anambra State,Nigeria; Department Of Chemical Engineering,Nnamdi Azikwe University Awka, Anambra State,Nigeria

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