Investigation of Inhibition Potential Effect of Organic Compound for the Corrosivity of Phosphoric Acid on Aluminium

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Musa Husaini 1 Muhammad Bashir Ibrahim 1

1. Bayero University Kano (BUK), P.M.B. 3011, Kano, Nigeria

* Corresponding author.


Received: 24 Sep. 2019 / Revised: 1 Oct. 2019 / Accepted: 15 Oct. 2019 / Published: 8 Feb. 2020

Index Terms

Adsorption, aluminium, benzaldehyde, corrosion, FT-IR, Kinetic parameters and Thermodynamic parameters.


The organic compound used as corrosion inhibitor was benzaldehyde. The use of organic compounds as corrosion inhibitors is of potential interest due to their abundant availability, cost effectiveness, and environmental acceptability. However, this study investigates the inhibition effect of this organic compound (benzaldehyde) on the corrosion of aluminium in phosphoric acid solution. Experiments were performed by varying the temperature and concentration of the compound under study. The results obtained from the study shows that the organic compound (benzaldehyde) is a potential inhibitor for the corrosion of aluminium in phosphoric acid solution. The inhibition efficiency was found to increases progressively as the concentration of the inhibitor increases but decreases when the temperature rises. Activation energy values for the corrosion process was found to be 32.61 kJ/mol in uninhibited phosphoric acid solution which increased to 49.53 kJ/mol in the presence 0.1 M concentration of the inhibitor. The values of the rate constant and half live were 9.12 × 10-3 hr-1 and 75.94 hr in uninhibited phosphoric acid solution which changed to 4.56× 10-3 and 151.80 hr in the presence of 0.1 M inhibitor concentration. Kinetics of the reaction in uninhibited and in the presence of the inhibitor revealed that the process follows a first order reaction. The evaluated enthalpy (ΔH) gave positive values which indicate that the heat of adsorption process on the surface of aluminum was endothermic. The negative values of entropy (ΔS) signified that the activated complex at the rate determining step is an association, not dissociation. Evaluated values of free energy of adsorption (ΔGads) were all negative, implying spontaneity of the process and were around and less than -20 kJ/mol, indicative of physisorption of the adsorption process.

Cite This Paper

Musa Husaini, Muhammad Bashir Ibrahim. “Investigation of Inhibition Potential Effect of Organic Compound for the Corrosivity of Phosphoric Acid on Aluminium ", International Journal of Engineering and Manufacturing(IJEM), Vol.10, No.1, pp.41-53, 2020. DOI: 10.5815/ijem.2020.01.04


[1] Paulina, A. L., Octavio, O. X., Diego, G. L., Natalya, V. L., Marco, A. D., Irina, V. L. (2014). The Inhibition of Aluminum Corrosion in Sulphuric Acid by Poly (1-Vinyl-3-alkyl- Imidazlium Hexafluoro-Phosphate). Journal of Materials. 7: 5711- 5734.

[2] Amin, M.A., Mohsen, Q. and Hazzai. O.A. (2009). Synergistic effect of I- ions on the corrosion inhibition of Al in 1.0 M phosphoric acid solution by purine. Mater. Chem. Phys. 114: 908-914.

[3] Benabdellah, M. Benkaddour, M. Hammouti, B. Bendahhou, M. Aouniti, A. (2006). Inhibition of steel corrosion in 2M H3PO4 by Artemisia oil. Appl. Surf. Sci. 252 (18): 6212-6217.

[4] Noor, E. (2005). The inhibition effect of mild steel corrosion in phosphoric acid solutions by some N-heterocyclic compounds in the salt form. Corros. Sci. 47(1): 33

[5] Wang, (2006). Inhibition of mild steel corrosion in phosphoric acid solution by triazolederivatives. Corros. Sci. 48: 608-616

[6] Upadhyay, R.K and Mathur, S.P. (2007). Effects of Schiff’s bases as corrosion inhibitors on mild steel in sulphuric acid. E-Journal of chemistry. 4(3):408-414.

[7] Ashish, K. S. and Quraishi, M. A. (2012). Study of Some Bidentate Schiff Bases of Isatin as Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution. Internotional Journal of Electrochemical Science. 7: 3222-3241.

[8] Hachelef, H., Benmoussat, A,. Khelifa, A., Athmani, D. and Bouchareb, D. (2016): Study of corrosion inhibition by Electrochemical Impedance Spectroscopy method of 5083 aluminum alloy in 1 M HCl solution containing propolis extract. J. Mater. Environ. Sci. 7: 1751–1758

[9] Zhang, Q. B. and Hua, Y. X. (2010). Corrosion inhibition of aluminum in hydrochloric acid solution by alkylimidazolium ionic liquids. Mater. Chem. Phys. 119: 57–64.

[10] Megalai, M.S., Ramesh, R. and Maniula, P. (2013). Inhibition of Corrosion Mild Steel in Acid Media by Trazodone Drug. Research Desk. 2(4): 326-333.

[11] Yadav, M., Kumar, S., Sharma, U. and Yadav, P.N. (2013). Substituted amines as corrosion inhibitors for N80 steel in 15%HCl. Journal of Material and Environmental Science. 4(5): 691-700.

[12] Desai, P. S. (2015). Aniline as Corrosion Inhibitor for Aluminum in Trichloroacetic Acid. European Journal of Pharmaceutical and Medical Research. 2(2): 527-537.

[13] Arvnabh, M., Godhani, D.R. And Anil S. (2011). Diamines as corrosion inhibitors for aluminium alloy in organic acid. Asian Journal of Experimental Chemistry. 6(1): 38-41

[14] Athareh, D. and Fatemeh, B. (2011). A New Synthesized Corrosion Inhibitor for Mild Steel in 0.5 M H2SO4. Gazi University Journal of Science. 24(2): 219-226.

[15] Husaini, M., Usman, B. and Ibrahim, M. B. (2018). Evaluation of corrosion behavior of aluminum in different environment. Bayero Journal of Pure and Applied Sciences. 11(1): 88-92.

[16] Husaini, M., Usman, B. and Ibrahim, M. B. (2019). Study of corrosion inhibition of aluminium in nitric acid solution using Anisaldehyde (4 – methoxy benzaldehyde) as inhibitor. Algerian Journal of Engineering and Technology.

[17] Husaini, M and Ibrahim, M.B (2019). Thermodynamic and Kinetic study on the corrosion of aluminium in hydrochloric acid using benzaldehyde as corrosion inhibitor. International Journal of Engineering and Manufacturing. 9(6): 53-64

[18] Husaini, M., Usman, B., Ibrahim, M. B. (2020). Effect of Aniline as Corrosion Inhibitor on the Corrosion of Aluminium in Hydrochloric Acid Solution. Research Journal of Chemistry and Environment. 24(2): 1-8.

[19] Patel, A. S., Panchal, V. A., and Shah, N. K. (2012). Electrochemical Impedance Study on the Corrosion of Al-Pure in Hydrochloric Acid Solution Using Schiff bases. Indian Academy of Sciences. 35(2): 283–290.

[20] Husaini, M., Usman, B., Ibrahim, M. B. (2019). Inhibitive Effect of Glutaraldehyde on the Corrosion of Aluminium in Hydrochloric Acid Solution. Journal of Science and Technology. 11(2): 8-16