<abstract xmlns="http://www.w3.org/1999/xhtml">The inhibition of mild steel corrosion in 1.0 M HCl and 0.5 M H2SO4 by <italic>Cissus populnea</italic> stem extract was investigated using weight loss measurements in the temperature range of 303 – 333 K. Results from the study revealed that <italic>Cissus populnea</italic> stem extract inhibited the corrosion of mild steel in both acid media. Inhibition efficiency of the stem extract increased with increase in the extract concentration but decreased with immersion time. The kinetics of the reaction aligned with a first order type. Thermodynamics investigations showed that <italic>Cissus populnea</italic> extract is adsorbed on the steel surface through physical interactions, and the adsorption process was endothermic and spontaneous. Langmuir, Freundlich and Temkin isotherm models best described the adsorption mechanism of the stem extract on the steel surface.</abstract>

The inhibition of mild steel corrosion in 1.0 M HCl and 0.5 M H2SO4 by Cissus populnea stem extract was investigated using weight loss measurements in the temperature range of 303 – 333 K. Results from the study revealed that Cissus populnea stem extract inhibited the corrosion of mild steel in both acid media. Inhibition efficiency of the stem extract increased with increase in the extract concentration but decreased with immersion time. The kinetics of the reaction aligned with a first order type. Thermodynamics investigations showed that Cissus populnea extract is adsorbed on the steel surface through physical interactions, and the adsorption process was endothermic and spontaneous. Langmuir, Freundlich and Temkin isotherm models best described the adsorption mechanism of the stem extract on the steel surface.

Influence of <italic>Cissus populnea</italic> stem extract on kinetics and thermodynamics of mild steel corrosion in acidic medium

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Influence of  stem extract on kinetics and thermodynamics of mild steel corrosion in acidic medium

The inhibition of mild steel corrosion in 1.0 M HCl and 0.5 M H2SO4 by Cissus populnea stem extract was investigated using weight loss measurements in the...

Influence of Cissus populnea stem extract on kinetics and thermodynamics of mild steel corrosion in acidic medium

Published Online: Apr 15, 2019

Page range: 14 - 20

Received: Jan 31, 2019

Accepted: Mar 05, 2019

DOI: https://doi.org/10.2478/auoc-2019-0003

Keywords
corrosion inhibition, extract, mild steel, kinetics, temperature dependence, corrosion rate

© 2019 Habibat F. Chahul et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Influence of Cissus populnea stem extract on kinetics and thermodynamics of mild steel corrosion in acidic medium

Published Online: Apr 15, 2019

Page range: 14 - 20

Received: Jan 31, 2019

Accepted: Mar 05, 2019

DOI: https://doi.org/10.2478/auoc-2019-0003

Keywordscorrosion inhibition, extract, mild steel, kinetics, temperature dependence, corrosion rate

© 2019 Habibat F. Chahul et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
corrosion inhibition, extract, mild steel, kinetics, temperature dependence, corrosion rate