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Portugaliae Electrochimica Acta
Print version ISSN 0872-1904
Port. Electrochim. Acta vol.29 no.1 Coimbra 2011
Corrosion Inhibition of Aqueous Extract of Cocos nucifera - Coconut Palm - Petiole Extract from Destructive Distillation for the Corrosion of Mild Steel in Acidic Medium
P.R. Vijayalakshmi,1,* R. Rajalakshmi2 and S. Subhashini2
1 Department of Chemistry, Dr. G.R. Damodaran College of Science, Coimbatore - 641 014, Tamil Nadu, India
2 Department of Chemistry, Avinashilingam University For Women, Coimbatore - 641 043, Tamil Nadu, India
DOI: 10.4152/pea.201101009
Abstract
The inhibitive effect and adsorption properties of petiole extract obtained from destructive distillation of cocos nucifera for the corrosion of mild steel in 0.5 M H2SO4 and 1 M HCl were investigated using mass loss, polarization and electrochemical impedance techniques of monitoring corrosion. The results obtained indicate that petiole extract of cocos nucifera behaves as good inhibitor for the corrosion of mild steel in 0.5 M H2SO4 and 1 M HCl. Activation energy of thermodynamic parameter was evaluated from temperature studies result. The adsorption of the inhibitor on mild steel surface was found to be spontaneous, endothermic and consistent with the assumptions of Langmuir adsorption isotherm. The electrochemical measurements reveal that the petiole extract behaved like mixed type inhibitor. Efforts are made to analyze the effectiveness of petiole extract of coconut palm in industrial processes.
Keywords: corrosion inhibition, mild steel, adsorption, cocos nucifera petiole, GC-MS.
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Texto completo disponível apenas em PDF.
References
1. N.O. Eddy, S.A. Odoemelam, Pigment Resin Tech. 38 (2009) 111. 10.1108/03699420910940617
2. A. Bouyanzer, B. Hammouti, Pigment Resin Tech. 33 (2004) 287. 10.1108/03699420410560489
3. N.O. Eddy, E.E. Ebenso, Afri. J. Pure Appl. Chem. 2 (2008) 46.
4. E.E. Ebenso, N.O. Eddy, A.O. Odiongenyi. Port. Electrochim. Acta 27 (2009) 13. 10.4152/pea.200901013 [ Links ]
5. D. Maheswari, R. Rajalakshmi, S. Subhashini, M. Viswanathan, S. Sivakamasundari, Proceedings of Enviro., Coimbatore, India (2001) 534.
6. C.A. Loto, A.I. Mohammed, R.O. Loto, Corrosion Prevention Control 50 (2003) 107.
7. A.Y. El-Etre, Appl. Surf. Sci. 252 (2006) 8521. 10.1016/j.apsusc.2005.11.066
8. S. Subhashini, S. Sathyanarayana, C. Marikkannu, S. Sivakamasundari, ISAEST VII (2002) 146.
9. R. Rajalakshmi, S. Sathyanarayana, C. Marikkannu, S. Sivakamasundari, ISAEST VII (2002) 142.
10. G. Manohari, R. Rajalakshmi, Ninth Seminar Proceedings, Tamil Nadu State Council for Science and Technology, India (2001) 318.
11. A. Prithiba, S. Sathiyanarayana, R. Rajalakshmi, S. Sivakamasundari, Proceedings of 11th NCCI, Baroda, India (2003) 3.
12. M.D.J. Kawser, A.Farid Nash, J. Oil Palm Research 12 (2000) 86.
13. N. Al-Andis, E. Khamis, A. Al-Mayouf, H. Aboul-Enein, Corros. Prev. Cont. 42 (1995) 13.
14. I.N. Putilova, S.A. Balezin, V.P. Barannik, Met. Corros. Inhibitors, Pergamm Press, NewYork, 1960. p.31.
15. N.S. Rawat, A.K. Singh, Bull. Electrochem. 3 (1987) 7.
16. B.B. Damaskin, O.A. Petrii, B. Batraktov, Adsorption of organic compounds on electrodes, Plenum Press, New York, (1971).
17. M. Benabdellah, A. Aouniti, A. Dafali, B. Hammouti, M. Benkaddour, A. Yahyi, A. Ettouhami, Appl. Surf. Sci. 252 (2006) 8341. 10.1016/j.apsusc.2005.11.037
18. O.K. Abiiola, N.C. Oforka, Corros. Sci. Eng. 3 (2002) 21.
19. E.E. Ebenso, P.C. Okafor, U.J. Ekpe, Anti-Corrosion Methods Materials 50 (2003) 414. 10.1108/00035590310501576
20. E.E. Ebenso, Mater. Chem. Phys. 79 (2003) 58. 10.1016/S0254-0584(02)00446-7
21. S.A. Umoren, I.B. Obot, E.E. Ebenso, P.C. Okafor, O. Ogbobe, E.E. Oguzie, Anti-Corrosion Methods Materials 53 (2006) 277. 10.1108/00035590610692554
22. A.Y. El-Etre, J. Colloid Interface Sci. 314 (2007) 578. 10.1016/j.jcis.2007.05.077
23. S.A. Umoren, I.B. Obot, E.E. Ebenso, N.O. Obi-Egbedi, Desalination 247 (2009) 561. 10.1016/j.desal.2008.09.005
24. G. Quartarone, G. Moretti, A. Tassan, A. Zingales, Werkst Korrosion 45 (1994) 641.
25. M. Abdallah, E.A. Helal, A.S. Fouda, Corros. Sci. 48 (2006) 1639. 10.1016/j.corsci.2005.06.020
26. J.OM. Bockris, O.A.J. Swinkell, J. Electrochem. Science 111 (1964) 736. 10.1149/1.2426222
27. Graeme Wright, "Corrosion Protection of Metals", Chemical Processes in New Zealand, 2nd Ed., NZIC (1998) p. 8J 1-10.
28. E. McCafferty, N. Hackerman, J. Electrochem. Soc. 119 (1972) 146. 10.1149/1.2404150
29. M. Stern, A.L. Geary, J. Electrochem. Soc. 104 (1957) 56. 10.1149/1.2428496
30. N.O. Eddy, E.E. Ebenso, Afri. J. Pure Appl. Chem. 2 (2008) 046.
* Corresponding author. E-mail address: kamramvijib128@gmail.com
Received 6 December 2009; accepted 2 February 2011