Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 3, Issue 1, Pages 286-296Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2014.10.014
Keywords
Watermelon; Waste products; Mild steel; Corrosion inhibition; Acid corrosion
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Funding
- Center of Research Excellence in Corrosion (Core-c), Research Institute, King Fahd University of Petroleum and Minerals
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Three agro-waste products namely; watermelon rind extract (WMRE), watermelon seed extract (WMSE) and watermelon peel extract (WMPE) were investigated for their corrosion inhibition potentials for mild steel in HCl solution using electrochemical techniques at 25 degrees C. All the extracts inhibited acid-induced corrosion of mild steel in the order WMSE>WMRE>WMPE. Corrosion inhibition effect was found to be dependent on extracts' concentrations. Inhibitive action of the extracts could be attributed to adsorption of the extracts' components on mild steel surface by physisorption mechanism according to Langmuir adsorption isotherm model and functions as mixed-typed inhibitors as revealed by potentiodynamic polarization studies. (C) 2014 Elsevier Ltd. All rights reserved.
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