Experimental Study on Carbon Steel Corrosion and its Inhibition Using Sodium Benzoate Under Different Operating Conditions
DOI:
https://doi.org/10.31699/IJCPE.2011.3.2Keywords:
corrosion rate, polarization curve, sodium benzoate, carbon steel, Inhibition efficiency.Abstract
Corrosion experiments were carried out to investigate the effect of several operating parameters on the corrosion rate and corrosion potential of carbon steel in turbulent flow conditions in the absence and presence of sodium benzoate inhibitor using electrochemical polarization technique. These parameters were rotational velocity (0 - 1.57 m/s), temperature (30oC – 50oC), and time. The effect of these parameters on the corrosion rate and inhibition efficiency were investigated and discussed. It was found that the corrosion rate represented by limiting current increases considerably with increasing velocity and temperature and that it decreased with time due to the formation of corrosion product layer. The corrosion potential shifted to more positive with increasing temperature and velocity while it shifted to more negative with time. Sodium benzoate gave good inhibition efficiency for the whole investigated range of temperature and velocity. Its efficiency was high on clean surfaces and decreased with time in stationary and flow conditions. No noticeable effect of temperature on the inhibition efficiency was noticed.
References
Fontana M.G., Greene N.D., (1984), “Corrosion Engineering”, London , 2nd edition.
Kruger J., M.Sc (2001), "Electrochemistry of corrosion", the Johns Hopkins university, Baltimore, MD 21218, USA.
Yen M.S., I.J.Wang, Daysand, Pigments, (2005), 67, 183.
Shreir L.L., (2000), “Corrosion Handbook”, part 1, Newnes Butter, London, 2nd edition .
Uhlig, R., Herbert H. Winston Revie, (2008), "Corrosion and Corrosion Control, An Introduction to Corrosion Science and Engineering", John Wiley &Sons, 4rd edition.
Kraka E, D. Cremer, (222), "Computer design of anticancer drugs", J. Am. Chem. Soc., 122, 8245.
Farr, M. Saremi, (1983), “Surface Technology”, 19, 137.
Zhuk N.P, (1976), course on corrosion and metal protection, Metallurgy, Moscow.
Jones L. W., (1988), “Corrosion and Water Technology for Petroleum Producers”.
Mahato B.K., Stewrd F.R., and Shimlit L. W., (1986), “Corrosion Sciences”, No. I, Vol.8, 737.
Mahato K., Cha C. Y. and Shemilt U W., (1980), “Corrosion Sciences”, Vol. 20, P. 421 to 441.
Slaiman and Hasan, (December 2010), "Study on Corrosion Rate of Carbon Steel Pipe under Turbulent Flow Conditions", The Candian J. of Chem. Eng., Vol. 88.
Marangozis J., (1986),“corrosion”, No. 8, Vol.24, P. 255.
Smith S. W., McCabe K. M., and Black D.W., (1988), “CorrosionNACE”, No. 1, Vol. 45, P. 790.
Wormwell F, Mercer A.D, (May 2007),"sodium benzoate and other metal benzoates as corrosioninhibitors in water and in aqueous solutions", Journal of chemical technology and Biotechnology.
Pickett D.J. and K.L. Ong, (1974), Electrochmical Acta, Vol. 19, p. 875.
Gabe D.R. and P.A. Makanjoula, (1986), EFCF Publication Series No. 15, Electrochemical Eng., AICHE Symposium Series, No. 98, P.309.
Cifuentes, (November1987),“ANTI-Corrosion”, P.4 to 6.
Poulson, (1983), Corrosion Science, No. 1, Vol. 23, P. 391.
Foroulis Z. A., (1979), Corrosion, Vol. 35. P.340.
Evans, Ulick. R., (1960), "The Corrosion and Oxidation of Metals", Arnold, London.
Silverman D.C., (1984), “Corrosion NACE”, No. 5, Vol. 40, P. 220.
Hasan, B.O., (2003), "Heat, Mass and Momentum Analogies to Estimate Corrosion Rates under Turbulent Flow Conditions", Ph. D. Thesis. Chem. Eng. Dep., Al-Nahrain University, Baghdad.
Olen, L. and Riggs, J. (1974), “Theoretical Aspects of Corrosion Inhibitors and Inhibition” ,NACE, Houston, Texas.
Francis Moran, Nathalie Ochoa, Nadine Pebere and Bernard Tribollet, (2005),"Influence of Flow on the Corrosion Inhibition of Carbon Steel by Fatty Amines in Association with Phosphonocarboxylic Acid Salts", Corrosion Science, 47, PP. 593-604.
Musa,A.Y, A.H.Kadhum, A.B. Mohamad, A.R. Daud, (2009), "Stability of layer forming for corrosion inhibitor on mild steel surface under hydrodynamic conditions", Int. J. Electrochem. Sci.,4, 707-716.
Toledo, D.M., J.G. Rodrigues, M.Casales, A.Caceres, L. Matinez, (2011), "hydrodynamic effects on the Co2 corrosion inhibition of X-120 pipline steel by carboxyethlimidazoline", Int. J. Electrochem. Sci.,6, 778- 792.
Qasim J. M. Slaiman, Basim O. Hasan and Hussein A. Mahmood, (April 2008), “ Corrosion Inhibition of Carbon Steel Under Two-Phase Flow (Water–Petroleum) Simulated by Turbulently Agitated System" Canadian J. of Chemical Engineering, Vol. 86, 240-248.
Noreen Anthony, H.Benita Sherine, and Susai Rajendran, (2009), "Investigation of Inhibiting Effect of Carboxymethyicellulose – Zn+2 System on Chloride Solution", The Arabian J for Science and Engineering, vol.35, 2A.
Audin A., and L.John, (1972), J. Chem. Eng. Data, No.3, Vol. 17, p.789.
Sense F., (2001), “Oxygen Solubility”, North California State.
Welty J. R., C. E. Wicks, and G. Rorrer, (2001), "Fundamental of Momentum, Heat and Mass Transfer”, John Wiley and Sons, United State of America, 4th edition.
Nesic N., B. F. M. Pots, J. Postelthwaaite, and N. Trevenot, (1995), J.Corrosion Science and Eng., Ph.D. Study, Vol. 1, Paper 3.
Coulson M. and Richardson J. F., (1998), “Chemical engineering”, Vol.1, Butter Worth Heinemann, Britain, 5th Edition.
Brodkey R. S. and Hershey H. C., (1989), “Transport Phenomena”, Mc Graw Hill, New York, 2nd Printing.
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