Document Type : Original Research Article

Authors

1 Department of Chemistry, The Federal University of Technology, Akure, Nigeria

2 Department of Industrial Chemistry, Ekiti State University, PMB 5363, Ado-Ekiti, Nigeria

3 Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Dalian 116023, China

4 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

5 School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China

6 University of Science and Technology of China, Baohe District, Hefei, Anhui 230026, China

Abstract

The usage of synthetic-based inhibitors for protection of metals against corrosion is always accompanied by environmental and economic challenges, including a threat to human health. Therefore, the corrosion inhibition efficiency of sweet prayer (Thaumatococcus danielli) leaf extract on mild steel in alkaline medium (NaOH) was investigated. The effects of temperature and concentration of the inhibitor on corrosion inhibitive potential of the leaf extract were evaluated. The equilibrium data were subjected to isotherm analysis (Langmuir, Freundlich and Temkin models). Langmuir model was the best model that provided information on the adsorption of the corrosion systems. The values of Langmuir equilibrium constant (KL) increased from 0.1581 g/L to 0.6523 g/L as the temperature increased from 298 K to 333 K. The findings revealed that sweet prayer leaf extract at different concentrations had inhibitive effects of mild steel on alkaline medium. The values of activation energy of the inhibited corrosion systems were greater than that of obtained for uninhibited system. Thermodynamic study revealed a feasible and spontaneous adsorption of sweet prayer leaf extract on mild steel. The trends of inhibition efficiencies and the results obtained from the thermodynamic parameters suggested a physical adsorption mechanism. The study proved that the sweet prayer leaf extract could serve as a low-cost corrosion inhibitor of mild steel in alkaline medium.

Graphical Abstract

Equilibrium and Thermodynamic Characteristics of the Corrosion Inhibition of Mild Steel Using Sweet Prayer Leaf Extract in Alkaline Medium

Keywords

Main Subjects

References

[1] M. Yadav, L. Gope, N. Kumari, P. Yadav, Corrosion inhibition performance of pyranopyrazole derivatives for mild steel in HCl solution: gravimetric, electrochemical and DFT studies. Journal of Molecular Liquids, 216 (2016) 78–86.

[2] M.E. Mashuga, L.O. Olasunkanmi, E.E. Ebenso, Experimental and theoretical investigation of the inhibitory effect of new pyridazine derivatives for the corrosion of mild steel in 1 M HCl. Journal of Molecular Structure, 1136 (2017) 127–139.

[3] W.D. Callister, Materials Science and Engineering, 4th Ed. (1997): John–Wiley, New York.

[4] M. Gopiraman, N. Selvakumaran, D. Kesavan, R. Karvembu, Adsorption and corrosion inhibition behaviour of N-(phenylcarbamothioyl)benzamide on mild steel in acidic medium. Progress in Organic Coating, 73 (2012) 104–111.

[5] E.E. Oguzie, Corrosion inhibition of aluminium in acidic and alkaline media by Sansevieria trifasciata extract. Corrosion Science, 49 (2007) 1527–1539.

[6] M. Muralisankar, R. Sreedharan, S. Sujith, N. S. Bhuvanesh, A. Sreekanth, N (1)-pentylisatin-N (4)-methyl-N (4)-phenylthiosemicarbazone (PITSc) as a corrosion inhibitor on mild steel in HCl. Journal of Alloys and Compounds, 695 (2017) 171–182.

[7] B. Amabogha, Corrosion in thermal energy generating plant. International Journal of Engineering and Applied Sciences, 4 (2013) 29–35.

[8] A.K. Satapathy, G. Gunasekaran, S.C. Sahoo, A. Kumar, P.V. Rodrigues, Corrosion inhibition by Justicia gendarussa plant extract in hydrochloric acid solution. Corrosion Science, 51 (2009) 2848–2856.

[9] N.O. Eddy, Inhibitive adsorption properties of ethanol extract of Colocasia esculenta leaves for corrosion of mild steel in H2SO4. International Journal of Physical Sciences, 4 (2009) 165–171. 

[10] S.A. Umoren, U.M. Eduok, A.U. Israel, I.B. Obot, M.M. Solomon, Coconut coir dust extract: A novel eco-friendly corrosion inhibitor for Al in HCl solutions. Green Chemistry Letters and Reviews, 5 (2012) 303–313.

[11] M.A. Arenas, A. Conde, J.J. de Damborenea, Cerium: a suitable green corrosion inhibitor for tinplate. Corrosion Science, 44 (2002) 511–520.

[12] S.K. Saha, A. Dutta, P. Ghosh, D. Sukul, P. Banerjee, Novel schiff-base molecules as efficient corrosion inhibitors for mild steel surface in 1 M HCl medium: experimental and theoretical approach. Physical Chemistry Chemical Physics, 18 (2016) 17898–17911.

[13] A. Ostovari, S.M. Hoseinieh, M. Peikari, S.R. Shadizadeh, S.J. Hashemi, Corrosion inhibition of mild steel in 1 M HCl solution by henna extract: A comparative study of the inhibition of henna and its constituents (lawsone, gallic acid, α-d-Glucose and tannic acid), Corrosion Science, 51 (2009) 1935–1949.

[14] B. Anand, V. Balasubramanian, A comparative study on corrosion inhibition of mild steel using Piper nigrum L. in different acid media. E-journal of Chemistry, 7 (2010) 942–946.

[15] W. Mai, S. Soghrati, R.G. Buchheit, A phase field model for simulating the pitting corrosion. Corrosion Science, 110 (2016) 157–166.

[16] O.K. Abiola, N.C. Oforka, Inhibition of the corrosion of mild steel in hydrochloric acid by (4–amino–2–methyl–5–pyrimidinyl methylthio) acetic acid and its precursor. Journal of Corrosion Science and Engineering, 3 (2002) 1–8.

[17] S. Kumar, S. Arora, M. Sharma, P. Arora, S.P. Mathur, Synergistic effect of calotropis plant in controlling corrosion of mild steel in basic solution. Journal of the Chilean Chemical Society, 54 (2009)83–88.

[18] V.O. Njoku, E.E. Oguzie, C. Obi, A.A. Ayuk Baphia nitida leaves extract as a green corrosion inhibitor for the corrosion of mild steel in acidic media. Advances in Chemistry, (2014) 808456. https://doi.org/10.1155/2014/808456

[19]A.I. Caroline, A.S. Abdulrahaman, I.H. Kobe, K.A. Ganiyu, S.M. Adams, Inhibitive performance of bitter leaf root extract on mild steel corrosion in sulphuric acid solution. American Journal of Materials Engineering and Technology, 3 (2015) 35–45.

[20] P.E. Alvarez, M.V. Fiori-Bimbi, A. Neske, S.A. Brandánd, C.A. Gervasie, Rollinia occidentalis extract as green corrosion inhibitor for carbon steel in HCl solution. Journal of Industrial and Engineering Chemistry 58 (2018) 92–99.

[21] A.A. Khadom, A.N. Abd, N.A. Ahmed, Xanthium strumarium leaves extracts as a friendly corrosion inhibitor of low carbon steel in hydrochloric acid: Kinetics and mathematical studies. South African Journal of Chemical Engineering, 25 (2018) 13–21.

[22] E. Alibakhshi, M. Ramezanzadeh, G. Bahlakeh, B. Ramezanzadeh, M. Mahdavian, M. Motamedi, Glycyrrhiza glabra leaves extract as a green corrosion inhibitor for mild steel in 1 M hydrochloric acid solution: Experimental, molecular dynamics, Monte Carlo and quantum mechanics study, Journal of Molecular Liquids 255 (2018) 185–198.

[23] J.K. Odusote, D.O. Owalude, S.J. Olusegun, R.A. Yahyad, Inhibition Efficiency of Moringa oleifera leaf extracts on the corrosion of reinforced steel bar in HCl Solution. The West India Journal of Engineering, 38 (2016) 64–70.

[24] J.C. Fry, Natural low-calorie sweetener, in: D. Baines, R. Seal, Natural Food Additives, Ingredients and Flavourings, Woodhead Publishing, Oxford (2012) 41–75. 

[25] K.S. Amoo, J.S. Jatau, M. Abdulwahab, Corrosion inhibitive effect of Psidium guajava leaves on mild steel in an induced alkaline solution. Journal of Scientific and Engineering Research, 6 (2019) 116–127.

[26]R.E. Smallman, R.J. Bishop, Modern Physical Metallurgy and Materials Engineering, 6th Ed., Butterworth Heinemann, Oxford (1999).

[27] H. Zarrok, A. Zarrouk, B. Hammouti, R. Salghi, C. Jama, F. Bentiss, Corrosion control of carbon steel in phosphoric acid by purpald – Weight loss, electrochemical and XPS studies. Corrosion Science, 64 (2012) 243–252

[28] R.T. Loto, Corrosion inhibition of mild steel in acidic medium by butyl alcohol. Research on Chemical Intermediates, (2013). DOI: 10.1007/s11164-013-1088-1

[29] S.S. Abd El Rehim, S.M. Sayyah, M.M. El-Deeb, S.M. Kamal, R.E. Azooz, Adsorption and corrosion inhibitive properties of P(2-aminobenzothiazole) on mild steel in hydrochloric acid media. International Journal of Industrial Chemistry, 7 (2016) 39–52.

[30] S.A.M. Refaey, F. Taha, A.M. Abd. El-Malak, Inhibition of stainless steel pitting corrosion in acidic medium by 2-mercaptobenzoxazole. Applied Surface Science, 236 (2004) 175–185.

[31]A. Fouda, M.A. Azeem, S. Mohamed, A. El-Desouky, Corrosion inhibition and adsorption behavior of Nerium oleander extract on carbon steel in hydrochloric acid solution. International Journal of Electrochemical Science, 14 (2019) 3932–3948.

[32] A.A. Khadom, A.S. Yaro, A.H. Kadum, A.S. AlTaie, A.Y. Musa, The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media. American Journal of Applied Sciences, 6 (2009) 1403–1409.

[33] S. Garai, S. Garai, P. Jaisankar, J.K. Singh, A. Elango, A comprehensive study on crude methanolic extract of Artemisia pallens (Asteraceae) and its active component as effective corrosion inhibitors of mild steel in acid solution. Corrosion Science, 60 (2012) 193–204.  

[34] D.S. Sheatty, P. Shetty, H.V.S. Nayak, Inhibition of mild steel corrosion in acid media by N-(2-thiophenyl)-N-phenyl thiourea. Journal of Chilean Chemical Society, 51 (2006) 849–853.

[35] M. Abdallah, E.A. Helal, A.S. Fouda, Aminopyrimidine derivatives as inhibitors for corrosion of 1018 carbon steel in nitric acid solution, Corrosion Science, 48 (2006) 1639–1654.

[36] L.M. Harwood, T.D.W. Claridge, Introduction to Organic Spectroscopy, University Press, Oxford (1996).

[37] P. Van Hien, N.S.H. Vu, L.X. Bach, T.N. Quyen, D.V. Ai, T.Q. Thang, N.D. Nam, Capability of Aganonerion polymorphum leaf–water extract in protecting hydrochloric acid induced steel corrosion, New Journal of Chemistry, 43 (2019) 15646–15658. https://doi.org/10.1039/C9NJ04079J

[38] F.E. Heakal, M.A. Deyab, M.M. Osman, A.E. Elkholy, Performance of Centaurea cyanus aqueous extract towards corrosion mitigation of carbon steel in saline formation water, Desalination, 425 (2018) 111–122.  http://dx.doi.org/10.1016/j.desal.2017.10.019