Mitigation of Mild Steel Corrosion in Acid by Green Inhibitors : Yeast, Pepper, Garlic, and Coffee
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-02
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Synthesized organic chemicals, used as inhibitors in mitigating the corrosion of huge quantities of steel articles, pose a major threat to the global environmental problems and health hazards.
Naturally occurring products which had been used for natural medication purposes, since the human civilization, are found to inhibit corrosion of steel.
Electrochemical studies of the effects of black pepper, garlic, yeast, and coffee on acid corrosion of steel have shown that the corrosion current decreases by manyfold with increase in concentration of the inhibitors.
These green inhibitors have been found to get adsorbed maximum up to 70–90%.
The polarizing effect is more on cathodic reactions than on anodic reactions, acting as cathodic inhibitor, while a few behaves as anodic to mixed inhibitor.
Mechanisms of adsorption are investigated by Frumkin, Temkin, and Langmuir isotherms.
The free energy of adsorption is found to be between −15 and −40 kJ/m for most inhibitors, indicating the phenomena of physical adsorption.
American Psychological Association (APA)
Paul, Subir& Kar, Bikash. 2012. Mitigation of Mild Steel Corrosion in Acid by Green Inhibitors : Yeast, Pepper, Garlic, and Coffee. ISRN Corrosion،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-487509
Modern Language Association (MLA)
Paul, Subir& Kar, Bikash. Mitigation of Mild Steel Corrosion in Acid by Green Inhibitors : Yeast, Pepper, Garlic, and Coffee. ISRN Corrosion No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-487509
American Medical Association (AMA)
Paul, Subir& Kar, Bikash. Mitigation of Mild Steel Corrosion in Acid by Green Inhibitors : Yeast, Pepper, Garlic, and Coffee. ISRN Corrosion. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-487509
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-487509