Pectin – A Green Corrosion Inhibitor For Mild Steel In Phosphoric Acid Medium

Sushmitha, Y and Padmalatha, * (2017) Pectin – A Green Corrosion Inhibitor For Mild Steel In Phosphoric Acid Medium. In: Research Poster Competitions 2017, 04/04/2017, Manipal University.

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Abstract

The anticorrosive performance of bio-polymer pectin was studied on mild steel in 1M Phosphoric acid medium. Electrochemical measurements such as potentiodynamic polarization, electrochemical impedance spectroscopy studies were adopted for the corrosion inhibition studies. The studies were carried out by varying the concentration of pectin in order to get maximum inhibition efficiency at various temperature ranging from 303 K to 318 K. The surface morphology studies and elemental mapping was done to confirm the adsorption of inhibitor. Potentiodynamic polarization studies showed that pectin acted as mixed type of inhibitor by bringing down both cathodic and anodic reactions under control. The kinetic and thermodynamic parameters revealed chemical adsorption of pectin on the mild steel surface. The suitable mechanism was proposed for the adsorption of pectin and the adsorption was reaffirmed by the surface morphology studies

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Mild steel; Pectin; Phosphoric acid; Electrochemical measurements; Surface analysis
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 13 Sep 2017 09:29
Last Modified: 13 Sep 2017 09:29
URI: http://eprints.manipal.edu/id/eprint/149678

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