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KMID : 1059520140580040359
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Journal of the Korean Chemical Society
2014 Volume.58 No. 4 p.359 ~ p.365
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Cinnamon Plant Extract as Corrosion Inhibitor for Steel Used in Waste Water Treatment Plants and Its Biological Effect on Escherichia coli
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Fouda Abd El-Aziz S.
Nazeer Ahmed Abdel
El-Khateeb Ayman Y.
Fakih Mohamed
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Abstract
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The inhibition effect of cinnamon plant extract as a green corrosion inhibitor for steel in sulfide polluted salt water was studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM). The results showed that cinnamon plant extract in sulfide polluted salt water is a good corrosion inhibitor with inhibition efficiency reached to 80% at 250 ppm of the plant extract. The adsorption of cinnamon obeys Temkin adsorption isotherm, and acts as a mixed-type of inhibitor but dominantly as a cathodic inhibitor in sulfide polluted salt water.
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KEYWORD
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Steel corrosion, Cinnamon plant extract, Polluted salt water
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