RESEARCH ARTICLE


A Binary Mixture of Sesame And Castor Oil as an Ecofriendly Corrosion Inhibitor of Mild Steel In Crude Oil



Tomiwa I. Oguntade1
iD
, Christiana S. Ita1, Olabode Sanmi1, Daniel T. Oyekunle2, *
iD

1 Department of Petroleum Engineering, College of Engineering, Covenant University, Ota, Nigeria
2 Department of Chemical Engineering, College of Engineering, Covenant University, Ota, Nigeria


© 2020 Oguntade et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Chemical Engineering, College of Engineering, Covenant University, Ota, Nigeria; Email: daniel.oyekunle@covenantuniversity.edu.ng


Abstract

Background:

A binary mixture of sesame and castor oil was used for reducing the corrosion rate of mild steel in crude oil environments. This study investigated the corrosion behavior of a binary mixture of sesame and castor oil as a corrosion inhibitor for mild steel in crude oil. Different parameters such as immersion time, the concentration of inhibitor and pH were investigated for corrosion of mild steel.

Methods:

Experimental analysis indicates that a passive layer of the inhibitor formed over the surface of mild steel thereby reducing the corrosion rate. This was demonstrated by varying different process parameters such as the concentration of binary inhibitor, pH and time using two different statistical models; the Response Surface Methodology (RSM) and the Artificial Neural Network (ANN).

Results:

From the results, it was observed that ANN was a better predictive tool to determine the corrosion rate of mild steel than the RSM.

Conclusion:

Overall, both the models prove that relative to the process parameters used, the importance level of the parameters was Time < Concentration of binary inhibitor < pH.

Keywords: ANN, Binary inhibitor, Corrosion rate, Crude oil, Mild steel, RSM.