Electrochemical Behaviour of Environmentally Friendly Inhibitor of Aloe Secundiflora Extract in Corrosion Control of Carbon Steel in Soft Water Media

J Mutasingwa; J  Buchweishaija; JEG Mdoe

Electrochemical Behaviour of Environmentally Friendly Inhibitor of Aloe Secundiflora Extract in Corrosion Control of Carbon Steel in Soft Water Media

Authors

J Mutasingwa Chemistry Department, University of Dar es Salaam, P. O. Box 35061 Dar es Salaam, Tanzania
J Buchweishaija Chemistry Department, University of Dar es Salaam, P. O. Box 35061 Dar es Salaam, Tanzania
JEG Mdoe Chemistry Department, University of Dar es Salaam, P. O. Box 35061 Dar es Salaam, Tanzania

Keywords:

Corrosion, Corrosion inhibitor, Carbon steel, Aloe secundiflora

Abstract

Electrochemical behaviour of Aloe secundiflora on carbon steel corrosion control in neutral and aerated soft water solutions have been investigated using electrochemical impedance spectroscopy and Tafel polarization techniques. The investigation was performed at different inhibitor concentrations under static and dynamic conditions using a Rotating Disk Electrode (RDE). The impedance and polarization results revealed that A. Secundiflora could be a potential corrosion inhibitor for carbon steel undergoing corrosion in fresh water medium. It was found that Aloe secundiflora reduces the electrochemical processes taking place on carbon steel undergoing corrosion. The inhibitor efficiency increases with increase in A. Secundiflora concentration and gradually decreases with increase in rotation speed. Optimum inhibitor efficiency of 98% was registered when 200 ppm of A.Secundiflora was employed.

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Published

17-04-2021

How to Cite

Mutasingwa, J., Buchweishaija, J. ., & Mdoe, J. (2021). Electrochemical Behaviour of Environmentally Friendly Inhibitor of Aloe Secundiflora Extract in Corrosion Control of Carbon Steel in Soft Water Media. Tanzania Journal of Science, 38(3), 157–165. Retrieved from https://tjs.udsm.ac.tz/index.php/tjs/article/view/453