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Corrosion Inhibitive Action of Euphorbia heterophylla Leaves Extract on Mild Steel in 1M H2SO4 Solution
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Volume 5, 2020
Issue 1 (January)
Pages: 1-8   |   Vol. 5, No. 1, January 2020   |   Follow on         
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Collins Chibuzor Odidika, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria.
Vincent Ishmael Egbulefu Ajiwe, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria.
Nkiruka Charity Eboagu, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria.
Chioma Irene Awuzie, Department of Science Laboratory Technology, Federal Polytechnic, Oko, Nigeria.
The corrosion inhibitive action of the ethanol extract of Euphorbia heterophylla (E.H) leaves on the corrosion of mild steel in 1M H2SO4 solution was investigated using gravimetric technique (weight loss measurement). Phytochemical analysis was carried out on the extract and the effect of extract concentration, temperature, immersion time and acid concentration on the corrosion process were determined. The corrosion inhibition efficiency of the extract increased with increase in the concentration of the extract and decreased with increase in temperature. Increase in temperature also increased the corrosion rate of mild steel in 1M H2SO4 in the absence and presence of different concentrations of the extract. The adsorption of the plant extract obeyed Langmuir and Freundlich adsorption isotherms. The process of physical adsorption was proposed for the extract from the trends of inhibition efficiency with temperature and from calculated values of Gibbs free energy, activation energy and enthalpy of adsorption. Gibbs free energy values for the reactions were less than 20kJ/mol, indicating physical adsorption process and were also found to be negative, indicating that the adsorption process was spontaneous. The corrosion inhibition efficiency (% IE) of the plant extract was attributed to the phytochemical constituents (alkaloids, flavonoids, tannins, saponins, phenolics, steroids and cardiac glycosides) present in them. The results showed that the extracts of E.H are good corrosion inhibitors of mild steel, reaching a corrosion inhibition efficiency (%IE) of 92.72% at 2.0g/L extract concentration.
Euphorbia heterophylla, Mild Steel, Corrosion Inhibitor, Gravimetric
Sorkhabi, H. A., Seifzadeh, D., Hosseini, M. G. EIS and polarization studies to evaluate the inhibition effect of 3H-phenothiazin-3-one, 7-dimethylamine on mild steel corrosion in 1M HCl solution, Corrosion Science, 2008, 50: 3363.
Christov, M. and Popova, A. Adsorption Characteristics of Corrosion Inhibitors from Corrosion Rate Measurements, Corrosion Science, 2004, 46 (7): 1613-1620.
Okafor, P. C. and Zheng, Y. Synergistic Inhibition Behavior of Methylbenzyl quartenary imidazole Derivative and Iodide Ions on Mild Steel in H2SO4 Solutions, Corrosion Science, 2009, 51 (4): 850-859.
Oguzie, E. E. Corrosion inhibitive effect and adsorption behavior of Hibiscus sabdariff extract on mild steel in acidic media, Portugaliae Electrochimica Acta, 2008, 26: 303-314.
Al-Mhyawi, S. R. Inhibition of mild steel corrosion using Juniperus plants as green inhibitors. African Journal of Pure and Applied Chemistry, 2014, 8 (1): 9-22.
Nnanna, L. A., Owate, I. O. and Oguzie, E. E. Inhibition of mild steel corrosion by Pentaclethra macrophylla Bentham extract, International Journal of Materials Engineering, 2014, 4 (5): 171-179.
Abdel-Gaber, A. M., Khamis, E., Abo-Ebahab, H. and Adeel, S. Inhibition of Aluminum Corrosion in Alkaline Solutions using Natural Compound, Journal of Material Chemistry and Physics, 2008, 109 (2-3): 297-305.
Obot, I. B., Ebenso, E. E. and Gasem, Z. M. Eco-friendly corrosion inhibitors: Adsorption and inhibitive action of ethanol extracts of Chromolaena odorata L. for the corrosion of mild steel in H2SO4 solution, International Journal of Electrochemical Science, 2012, 7: 1997-2008.
Umeh, S. O., Ajiwe, V. I. E. and Emelugo, B. N. Phytochemicasl and antimicrobial analysis of Vitex doniana (Uchakiri) leaves, Anachem Journal, 2007, 1: 75-77.
Ajiwe, V. I. E., Agupugo, C. L., Umeh, S. O., Nnabuenyi, H. O. The Preliminary study of the Pharmaceutical constituents of Pterocarpus soyauxi (Oha-ocha). Anachem Journal, 2008, 13 (2): 505–511.
El-Awady, A. A., Abd-El-Nabey, B. A. and Aziz, S. G. Kinetic-Thermodynamic and Adsorption Isotherms Analysis for the Inhibition of the Acid Corrosion of Steel by Cyclic and Open Chain Amines, Journal of Electrochemical Society, 1992, 139 (8): 2149-2154.
Ating, E. I., Umoren, S. A., Udousoro, I. I., Ebenso, E. E. and Udoh, A. P. Leaves extracts of Ananas sativum as green corrosion inhibitor for aluminum in hydrochloric acid solutions. Green chemistry Letters and Review, 2010, 3 (2): 61–68.
Vasudha V. G. and Shanmuga P. K. “Corrosion inhibition of mild steel in H2SO4 media using Polyalthialongifolia leaves, Chemical Science Revision Letters, 2014, 2 (6): 435-443.
Uddin, M. T., Islam, M. S. and Abedin, M. Z. “Adsorption of phenol from aqueous solutions by water hyacinth ash.” ARPN Journal of Engineering and Applied Sciences, 2007, 2 (2): 121-128.
Khan, A. R., Tahir, H., Uddin, F. and Uzma, H. Adsorption of methylene blue from aqueous solutions on the surface of wool fiber and cotton fiber. Journal of Applied Science and Environmental Management, 2005, 9 (2): 29-35.
Olasehinde, E. F., Olusegun, S. J., Adesina, A. S., Omogbehin, S. A., Momoh-Yahayah, H. “Inhibitory action of Nicotiana tabacum extracts on the corrosion of mild steel in HCl: Adsorption and Thermodynamics Study, Natural Science, 2013, 11 (1): 83-90.
Hassan, K. S. and Sisidoa, P. Paniala (flacourtiajangomas) Plant extract as eco-friendly inhibitor on the corrosion of mild steel in acidic media, RA SAYAN Journal of chemistry, 2011, 4 (3): 548-553.
El-Etre, A. Y. “Inhibition of acid corrosion of carbon steel using aqueous extract of olive leaves”, Journal of Colloid and Interface Science, 2007, 2 (314): 578-583.
Abiola, O. K., Otaigbe, J. O. E. and Kio, O. J. Gossipium hirsutum. L extracts as green corrosion inhibitor for aluminum in NaOH solution, Corrosion Science, 2009, 51: 1879–1881.
James, A. O., Oforka, N. C., Abiola, O. K. and Ita, B. I. Corrosion inhibition of mild steel in HCl acid by 2-Benzoylpyridine and pyridoxohydrochloride. Journal of Chemistry, 2009, 6 (2): 385-394.
Okafor, P. C., Ebenso, E. E. and Ekpe, U. J. Azadirachta indica extracts as corrosion inhibitor for mild steel in acidic medium, International Journal Electrochemical Science, 2010, 5: 978-993.
Obi-Egbedi, N. O., Obot, I. B. and Umoren, S. A. Spondias mombin L. as a green corrosion inhibitor for aluminium in sulphuric acid, Arabian Journal of Chemistry, 2012, 5: 361-373.
Awad, M. I. Ecofriendly corrosion inhibitors: inhibitive action of quinine for corrosion of low carbon steel in 1M HCl. Journal of applied Electrochemistry, 2006, 36: 1163–1168.
Martinez, S. and Stern, I. Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in the low carbon steel/mimosa tannin/sulfuric acid system. Applied surface science, 2002, 199: 83–89.
Ikpi, M. E., Udoh, I. I., Okafor, P. C., Ekpe, U. J. and Ebenso, E. E. Corrosion inhibition and Adsorption Behaviour of Extracts from Piper guineensis on mild steel corrosion in Acid media, International Journal of Electrochemical science, 2012, 7: 12193–12206.
Le Mehaute, A. and Grepy, G. “Introduction to transfer and motion in fractal media: the geometry of kinetics”, Solid State Ionics, 1983, 17 (9-10): 17–30.
Reinhard, G. and Rammet, U. In Proceedings of the Proceedings of the 6th European Symposium on Corrosion inhibitors, Ferrara, Italy, 1985, p. 831.
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