Share This Article:

Adsorption and Thermodynamics Study of the Inhibition of Corrosion of Mild Steel In H2SO4 Medium Using Vernonia Amygdalina

Abstract Full-Text HTML Download Download as PDF (Size:422KB) PP. 885-890
DOI: 10.4236/jmmce.2012.119083    5,379 Downloads   7,792 Views   Citations

ABSTRACT

In this work, adsorption and thermodynamics study of the inhibition of corrosion of mild steel in H2SO4 medium using Vernonia amygdalina was carried out. The inhibitive and adsorptive properties of ethanol extract of Vernonia amygdalina for the corrosion of mild steel in 0.2 M H2SO4 solutions was investigated using weight loss technique. The result has proved that that the extract is a good inhibitor of corrosion of mild steel in H2SO4. The inhibition efficiencies ranged from 23.37 to 38.59% and from 22.45 to 35.78% at 303 and 323K respectively. The inhibition efficiency of the extract decreased as temperature and time of immersion increased but increased with increase in concentration of extract. The adsorption of the inhibitor on surface of mild steel was found to be exothermic, spontaneous and consistent with the mechanism of physical adsorption as the value for heat of adsorption ranged from -2.12 to -4.87KJ mol–1. The adsorption data fitted well to Langmuir, Temkin, Frumkin and Flory-Huggins adsorption isotherms.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

J. Nwabanne and V. Okafor, "Adsorption and Thermodynamics Study of the Inhibition of Corrosion of Mild Steel In H2SO4 Medium Using Vernonia Amygdalina," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 9, 2012, pp. 885-890. doi: 10.4236/jmmce.2012.119083.

References

[1] R. K. Sinnot, “Coulson and Richardson’s Chemical Engineering,” Vol. 6, 3rd Edition, Elsevier, India, 2004, p. 294.
[2] S. A. Umoren, I. B. Obot, E. E. Ebenso and P. C. Okafor, “Eco-Friendly Inhibitors from Naturally Occurring Exudategums for Aluminium Corrosion Inhibition in Acidic Medium,” Portugaliae Electrochimica Acta, Vol. 26, 2008, pp. 267-282.
[3] E. E. Ebenso, “Effect of Halide Ions on the Corrosion Inhibition of Mild Steel in H2SO4 using Methyl Red, Part 1,” Bulletin of Electrochemistry, Vol. 19, No, 5, 2003, pp. 209-216.
[4] N. O. Eddy, P. Ekwumemgbo and S. A. Odoemelam, “Inhibition of the Corrosion of Mild Steel in H2SO4 by 5-Amino-1-cyclopropyl-7-[3R,5S] 3,5-dimethylpipera- zin-1-yl]-6,8-difluoro-4-oxo-quinoline-3-carboxylicacid,” International Journal of Physical Sciences, Vol. 3, No. 11, 2008, pp. 1-6.
[5] H. E. El Ashry, A. El Nemr, S. A. Esawy and S. Ragab, “Corrosion Inhibitors. Part II: Quantum Chemical Studies on the Corrosion Inhibitions of Steel In Acidicmedium by Some Triazole Oxadiazole and Thiadiazole Derivatives,” Electrochemica Acta, Vol. 51, 2006, pp. 3957-3968.
[6] B. I. Ita, “A Study of Corrosion Inhibition of Mild Steel in 0.1 M Hydrochloric Acid by O-vanillin Hydrazone,” Bulletin of Electrochemistry, Vol. 20, No. 8, 2004, pp. 363-370.
[7] S. A. Odoemelam and N. O. Eddy, “Effect of Pyridoxalhydro-chloride-2,4-dinitrophenyl Hydrazone on the Corrosion of Mild Steel in HCl,” Journal of Surface Science And Technology, Vol. 24, No. 12, 2008, pp. 1-14.
[8] H. Wang, X. Wang, H. Wang, L. Wang and A. Liu, “DFT Study of New Bipyrazole Derivatives and Their Potential Activity as Corrosion Inhibitors,” Journal of Molecular Modeling, Vol. 13, No. 1, 2007, pp. 147-153. doi:10.1007/s00894-006-0135-x
[9] E. E. Ebenso, U. J. Ibok, U. J. Ekpe, S. Umoren, O. K. Abiola, N. C. Oforka and S. Martinez, “Corrosion Inhibition Studies of Some Plant Extracts on Aluminiumin Acidic Medium,” Transactions on SAEST, Vol. 39, No. 4, 2004, pp. 117-123.
[10] F. Zucchi and I. H. Omar, “Plant Extracts as Corrosion Inhibitors of Mild Steel in HCl Solution,” Surface Technology, Vol. 24, No. 4, 1985, pp. 391-399. doi:10.1016/0376-4583(85)90057-3
[11] N. O. Eddy and E. E. Ebenso, “Adsorption and Inhibitive Properties of Ethanol Extracts of Musa sapientum Peels as a Green Corrosion Inhibitor for Mild Steel in H2SO4,” African Journal of Pure and Applied Chemistry, Vol. 2, No. 6, 2008, pp. 046-054.
[12] N. O. Eddy and S. A. Odoemelam, “Inhibition of the Corrosion of Mild Steel in H2SO4 by Ethanol Extract of Aloe Vera,” Resin & Pigment Technology, Vol. 38, No. 2, 2009, pp. 111-115. doi:10.1108/03699420910940617
[13] O. K. Abiola, N. C. Oforka, E. E. Ebenso, N. M. Nwinuka, “Eco-Friendly Corrosion Inhibitors: Inhibitive Action of Delonix Regia Extract for the Corrosion of Aluminium in Acidic Medium,” Anti-Corrosion Methods and Materials, Vol. 54, No. 4, 2007, pp. 219-224.
[14] E. E. Oguzie, “Adsorption and Corrosion Inhibitive Properties of Azadirachta Indica in Acid Solutions,” Pigment & Resin Technology, Vol. 35, No. 6, 2006, pp. 334-340. doi:10.1108/03699420610711335
[15] M. M. Opata, E. B. Izevbigie and V. Aqueous, “Amygdalina Extracts after MCF-7 Cell Membrane Permeability and Efflux,” International Journal of Environmental Research and Public Health, Vol. 3, No. 2, 2006, pp. 174- 179. doi:10.3390/ijerph2006030019
[16] E. U. Onyeka and I. O. Nwabekwe, “Phytochemical Profile of Some Green Leafy Vegetable in S.E. Nigeria,” Nigerian Food Journal, Vol. 25, No. 1, 2007, pp. 67-76.
[17] A. O. Odiongenyi, S. A. Odoemelam and N. O. Eddy, “Corrosion Inhibition and Adsorption Properties of Ethanol Extract of Vernonia amygdalina for the Corrosion of Mild Steel in H2SO4,” Portugalia Electrochimica Acta, Vol. 27, No. 1, 2009, pp. 33-45. doi:10.4152/pea.200901033
[18] E. E. Ebenso, “Synergistic Effect of Halides Ions on the Corrosion Inhibition of Aluminium in H2SO4 Using 2-Acetylphenothiazine,” Materials Chemistry and Physics, Vol. 79, No. 1, 2003, pp. 58-70. doi:10.1016/S0254-0584(02)00446-7
[19] E. E. Ebenso, “Effect of Methyl Red and Halide Ions on the Corrosion of Aluminium in H2SO4. Part 2,” Bulletin of Electrochemistry, Vol. 12, 2004, pp. 551-559.
[20] M. Abdallah, “Antibacterial Drugs as Corrosion Inhibitors for Corrosion of Aluminium in HCl Solution,” Corrosion Science, Vol. 46, No. 8, 2004, pp. 1981-1996. doi:10.1016/j.corsci.2003.09.031
[21] N. O. Eddy, U. J. Ibok, E. E. Ebenso, A. El Nemr and S. H. ElAshry, “Quantum Chemical Study of the Inhibition of the Corrosion of Mild Steel in H2SO4 by Some Antibiotics,” Journal of Molecular Modeling, Vol. 15, No. 9, 2009, pp. 1085-1092. doi:10.1007/s00894-009-0472-7
[22] S. A. Umoren, O. Ogbobe, E. E. Ebenso and U. J. Ekpe, “Effect of Halideson the Corrosion Inhibition of Mild Steel in Acidic Medium Using Polyvinyl Alcohol,” Pigment & Resin Technology, Vol. 35, No. 5, 2006, pp. 284- 292. doi:10.1108/03699420610692896
[23] S. A. Umoren, E. E. Ebenso, P. C. Okafor, U. J. Ekpe, and O. Ogbobe, “Effect of Halides Ions on the Corrosion Inhibition of Aluminium Inalkaline Medium Using Polyvinyl Alcohol,” Journal of Applied Polymer Science, Vol. 103, 2006, pp. 2810-2816.
[24] N. O. Eddy and S. A. Odoemelam, “Effect of Pyridoxal Hydro-chloride-2,4-dinitrophenyl Hydrazone on the Corrosion of Mild Steel in HCl,” Journal of Surface Science and Technology, Vol. 24, No. 1-2, 2008, pp. 1-14.
[25] N. O. Eddy, S. A. Odoemelam and N. W. Akpanudoh, “Synergistic Effect of Amoxicillin and Halides on the Inhibition of the Corrosion of Mild Steel in H2SO4,” Journal of Chemical Technology, Vol. 4, 2008, pp. 1-10.
[26] H. M. Bhajiwala and R. T. Vashi, “Ethanolamine, Diethanolamine Andtriethanolmine as Corrosion Inhibitors for Zinc in Binary Acid Mixture (HNO3 + H3PO4),” Bulletin of Electrochemistry, Vol. 17, 2001, pp. 441-448.
[27] S. Bilgic and N. Caliskan, “An Investigation of Some Schiff Bases Ascorrosion Inhibitors for Austenite Chromium-Nickel Steel in H2SO4,” Journal of Applied Electrochemistry, Vol. 31, No. 1, 2001, pp. 79-83. doi:10.1023/A:1004182329826
[28] H. Shockry, M. Yuasa, I. Sekine, R. M. Issa, H. Y. El-baradie and G. K. Gomma, “Corrosion Inhibition of Mild Steel by Schiff Base Compounds in Various Aqueous Solutions. Part I,” Corrosion Science, Vol. 40, No. 12, 1998, pp. 2173-2186. doi:10.1016/S0010-938X(98)00102-4
[29] S. Acharya and S. N. Upadhyay, “The Inhibition of Corrosion of Mild Steel by Some Flouroquinolones in Sodiumchloride Solution,” Transactions of the Indian Institute of Metals, Vol. 57, No. 3, 2004, pp. 297-306.
[30] H. Ashassi-Sorkhabi, M. R. Majidi and K. Seyyedi, “Investigation of Inhibitive Action of Amino Acids against Steel Corrosion in HCl Solution,” Applied Surface Science, Vol. 225, No. 1-4, 2004, pp. 176-185. doi:10.1016/j.apsusc.2003.10.007
[31] A. Bouyanzer and B. Hammouti, “A Study of Anticorrosion Effects of Artemisia Oil on Steel,” Pigment & Resin Technology, Vol. 33, No. 5, 2004, pp. 287-292. doi:10.1108/03699420410560489
[32] E. E. Ebenso, N. O. Eddy and A. O. Odiongenyi, “Inhibition of the Corrosion of Mild Steel by Methocarbamol,” Portugaliae Electrochimica Acta, Vol. 27, No. 1, 2009, pp. 13-22. doi:10.4152/pea.200901013
[33] N. O. Eddy and P. A. P. Mamza, “Inhibitive and Adsorption Properties of Ethanol Extract of Seeds and Leaves of Azardirachta Indica on the Corrosion of Mild Steel in H2SO4,” Portugaliae Electrochimica Acta, Vol. 27, No. 4, 2009, pp. 443-456. doi:10.4152/pea.200904443
[34] H. Ashassi-sorkhabi, B. Shaabani, B. Aligholipour and D. Seifzadeh, “The Effect of Some Schiff Bases on the Corrosion of Aluminium in HCl Solution,” Applied Surface Science, Vol. 252, No. 12, 2006, pp. 4039-4047. doi:10.1016/j.apsusc.2005.02.148
[35] E. E. Oguzie, “Inhibition of Acid Corrosion of Mild Steel by Telfariaoccidentalis Extract,” Pigment and Resin Technology, Vol. 34, No. 6, 2005, pp. 321-326. doi:10.1108/03699420510630336
[36] S. T. Arab and A. M. Turkustuni, “Inhibition of the Corrosion of Steel in Phosphoric Acid by Phenacyl-dime- thylsulfonium Bromide and Some of Its Para-Substituted Derivatives,” Portugalia Electrochimica Acta, Vol. 24, 2006, 2006, pp. 53-69.
[37] S. Rajendran, M. R. Joany, B. V. Apparao and N. Palaniswamy, “Synergistic Effect of Calcium Gluconate and Zn2 on the Inhibition of Corrosion of Mild Steel Inneutral Aqueous Environment,” Transactions on SAEST, Vol. 35, No. 3-4, 2000, pp. 113-117.
[38] S. Bilgic and M. Sahin, “The Corrosion Inhibition of Austenitic Chromium-Nickel Steel in H2SO4 by 2-Butyn-l -ol,” Materials Chemistry and Physics, Vol. 70, 2001, pp. 290-295.
[39] N. O. Eddy and A. S. Ekop, “Inhibition of Corrosion of Zinc in 0.1 M H2SO4 by 5-Amino-1-cyclopropyl-7- [(3r,5s)dimethylpiperazin-1-yl]-6,8-difluoro-4-oxo-quinoline-2-carboxylic Acid,” Journal of Materials Science, Vol. 4, No. 1, 2008, pp. 10-16.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.