Adsorption and Inhibition Analysis of Aconitine and Tubocurarine Alkaloids as Eco-friendly Inhibitors of Pitting Corrosion in ASTM – A47 Low Carbon Steel in HCl Acid Environment

Benedict Ushaka Ugi(1*), Mbang Eze Obeten(2), Victoria Mfon Bassey(3), Louis Hitler(4), Stephen Adie Adalikwu(5), Chijioke Everistus Omaliko(6), Desmond Obi Nandi(7), Ikama Edet Uwah(8)

(1) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(2) Department of Chemistry, Cross River State University of Technology, Calabar, Nigeria
(3) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(4) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(5) Department of Chemistry, College of Education Akamkpa, Nigeria
(6) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(7) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(8) Department of Pure & Applied Chemistry, University of Calabar, Calabar, Nigeria
(*) Corresponding Author


Corrosion is an enormous challenge in all sectors of the economy, especially to those working with metals. The research on the adsorption and inhibition analysis of aconitine alkaloid (ACA) and tubocurarine alkaloid (TBA) as eco-friendly inhibitors of pitting corrosion in ASTM – A47 low carbon steel in HCl acid was carried out under the following experimental methods: gravimetric method, gasometric method, electrochemical impedance spectroscopy, potentiodynamic polarization, and scanning electron microscopy. Results revealed good inhibitors as inhibition efficiencies were recorded at 98.8% and 91.2% at a maximum inhibitor concentration of 1500 ppm for tubocurarine and aconitine alkaloids, respectively. The inhibition efficiency was found to increase with increasing inhibitor concentrations indicating a strong binding between inhibitor molecules and ASTM – A47 low carbon steel in HCl acid. Electrochemical data strongly supported the efficacy of both inhibitors as earlier presented by the chemical methods as a trend in values of charge transfer resistance, double layer capacitance, corrosion potential, and corrosion current density were in accordance with standards for a good inhibitor. The inhibitors were seen to be spontaneous, stabled, endothermic and physically adsorbed. Adsorption of the inhibitors on metal surface obeyed Langmuir, El-Awady, Freundlich, and Temkin adsorption isotherm as regression values were approximately unity.


tubocurarine; aconitine; alkaloids; corrosion; polarization; adsorption; micrographs; Tafel; Nyquist; impedance

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[1] Bardal, E., 2004, Corrosion and Protection, Springer-Verlag, London.

[2] Davis, J.R., 2000, Corrosion: Understanding the Basics, ASM International, USA.

[3] Gergely, A., 2019, Phenomenal and Theories in Corrosion Science: Methods of Prevention, Nova Science Publishers Inc., USA.

[4] McCafferty, E., 2010, Introduction to Corrosion Science, Springer-Verlag, New York.

[5] Ohtsuka, T., Nishikata, A., Sakari, M., and Fushimi, K., 2018, Electrochemistry for Corrosion Fundamentals, Springer, Singapore.

[6] Perez, N., 2016, Electrochemistry and Corrosion Science, 2nd Ed., Springer, Cham, Switzerland.

[7] Rajendran, S., Nguyen, T.A., Kakooei, S., Li, Y., and Yeganeh, M., 2020, Corrosion Protection of the Nanoscale, 1st Ed., Elsevier UK.

[8] Roberge, P.R., 2008, Corrosion Engineering: Principle and Practices, McGraw Hill Professional, Canada.

[9] Talbot, D.E.J., and Talbot, J.D.R., 2018, Corrosion Science and Technology, 3rd Ed., CRC Press, Boca Raton, US.

[10] Tang, W.T., Wong, S.K., Law, T.Y., Pang, K.C., Sin, D., and Tam, Y.K., 2006, Method for the determination of Aconitum alkaloids in dietary supplements and raw materials by reversed phased liquid chromatography with ultraviolet detection and conformation by tandem mass spectrometry: Single-laboratory validation, J. AOAC Int., 89 (6) 1496–1514

[11] Paech, K., and Tracey, M.K., 1955, Modern Methods of Plant Analysis, Springer-Verlag, Berlin Heidelberg.

[12] Akalezi, C.O., and Oguzie, E.E., 2018, Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media, Int. J. Ind. Chem., 7 (1), 81–92.

[13] Ali, I.H., and Suleiman, M.H.A., 2018, Effects of acid extract of leaves of Juniperus procera on corrosion inhibition of carbon steel in HCl solution, Int. J. Electrochem. Sci., 13, 3910–3922.

[14] Al-Shehri, D.A., 2019, Oil and gas wells: Enhanced wellbore casing integrity management through corrosion rate prediction using an augmented intelligent approach, Sustainability, 11 (3), 818.

[15] Al-Sodani, K.A.A., Al-Amoudi, O.S.B., Maslehuddin, M., and Shameem, M., 2018, Efficiency of corrosion inhibitors in mitigating corrosion of steel under elevated temperature and chloride concentration, Constr. Build. Mater., 163, 97–112.

[16] Ameh, P.O., and Eddy, N.O., 2018, Experimental and computational chemistry studies on the inhibition efficiency of phthalic acid (PHA) for the corrosion of aluminum in hydrochloric and tetraoxosulphate(VI) acids, Prot. Met. Phys. Chem. Surf., 54 (6), 1169–1181.

[17] Ammal, P.R., Prajila, M., and Joseph, A., 2018, Effective inhibition of mild steel corrosion in hydrochloric acid using EBIMOT, a 1, 3, 4-oxadiazole derivative bearing a 2-ethylbenzimidazole moiety: Electro analytical, computational and kinetic studies, Egypt. J. Pet., 27 (4), 823–833.

[18] Bharatiya, U., Gal, P., Agrawal, A., Shah, M., and Sircar, A., 2019, Effect of corrosion on crude oil and natural gas pipeline with emphasis on prevention by ecofriendly corrosion inhibitors: A comprehensive review, J. Bio- Tribo-Corros., 5 (2), 35.

[19] Boumhara, K., Harhar, H., Tabyaoui, M., Bellaouchou, A., Guenbour, A., and Zarrouk, A., 2019, Corrosion inhibition of mild steel in 0.5 M H2SO4 solution by Artemisia herba-alba oil, J. Bio- Tribo-Corros., 5 (1), 8.

[20] Zaher, A., Chaouiki, A., Salghi, R., Boukhraz, A., Bourkhiss, B., and Ouhssine, M., 2020, Inhibition of mild steel corrosion in 1M hydrochloric medium by the methanolic extract of Ammi visnaga L. Lam seeds, Int. J. Corros., 2020, 9764206.

[21] Chaubey, N., Savita, Singh, V.K., and Quraishi, M.A., 2017, Corrosion inhibition performance of different bark extracts on aluminium in alkaline solution, J. Assoc. Arab Univ. Basic Appl. Sci., 22, 38–44.

[22] Cookey, G.A., Tambari, B.L., and Iboroma, D.S., 2018, Evaluation of corrosion inhibition potentials of green tip forest lily (Clivia nobilis) leaves extract on mild steel in acid media, J. Appl. Sci. Environ. Manage., 22 (1), 90–94.

[23] Dagdag, O., El Harfi, A., Cherkaoui, O., Safi, Z., Wazzan, N., Guo, L., Akpan, E.D., Verma, C., Ebenso, E.E., and Jalgham, R.T.T., 2019, Rheological, electrochemical, surface, DFT and molecular dynamics simulation studies on the anticorrosive properties of new epoxy monomer compound for steel in 1 M HCl solution, RSC Adv., 9 (8), 4454–4462.

[24] Lavanya, D.K., Priya, F.V., and Vijaya, D.P., 2020, Green approach to corrosion inhibition of mild steel in hydrochloric acid by 1-[morpholin-4-yl(thiophen-2-yl)methyl]thiourea, J. Fail. Anal. Prev., 20 (2), 494–502.

[25] Es’haghi, M., Amjad, A., Asghari, S., and Lotfi, A., 2018, Studying effect of plantain extract behavior as an eco-friendly corrosion inhibitor on the mild steel in 1 M HCl solution, Anti-Corros. Methods Mater., 65 (3), 310–316

[26] Essien, E.A., Kavaz, D., Ituen, E.B., and Umoren, S.A., 2018, Synthesis, characterization and anticorrosion property of olive leaves extract-titanium nanoparticles composite, J. Adhes. Sci. Technol., 32 (16), 1773–1794.

[27] Faiza, M., Zahari, A., Awang, K., and Hussin, H., 2020, Corrosion inhibition on mild steel in 1 M HCl solution by Cryptocarya nigra extracts and three of its constituents (alkaloids), RSC Adv., 10 (11), 6547–6562.

[28] Feng, L., Yang, H., Cui, X., Chen, D., and Li, G., 2018, Experimental and theoretical investigation on corrosion inhibitive properties of steel rebar by a newly designed environmentally friendly inhibitor formula, RSC Adv., 8 (12), 6507–6518.

[29] Fouda, A.S., El-Abbasy, H.M., and El-Sherbini, A.A., 2018, Inhibitive effect of Artemisia judaica herbs extract on the corrosion of carbon steel in hydrochloric acid solutions, Int. J. Corros. Scale Inhib., 7 (2), 213–235.

[30] Go, L.C., Depan, D., Holmes, W.E., Gallo, A., Knierim, K., Bertrand, T., and Hernandez, R., 2020, Kinetic and thermodynamic analyses of the corrosion inhibition of synthetic extracellular polymeric substances, PeerJ Mater. Sci., 2, e4.

[31] Go, L.C., Holmes, W., and Hernandez, R., 2019, Sweet corrosion inhibition on carbon steel using waste activated sludge extract, 2019 IEEE Green Technologies Conference (GreenTech), 3-6 April 2019, Lafayette, LA, USA.

[32] He, T., Emori, W., Zhang, R.H., Okafor, P.C., Yang, M., and Cheng, C.R., 2019, Detailed characterization of Phellodendron chinense Schneid and its application in the corrosion inhibition of carbon steel in acidic media, Bioelectrochemistry, 130, 107332.

[33] Idouhli, R., Koumya, Y., Khadiri, M., Aityoub, A., Abouelfida, A., and Benyaich, A., 2019, Inhibitory effect of Senecio anteuphorbium as green corrosion inhibitor for S300 steel, Int. J. Ind. Chem., 10 (2), 133–143.

[34] Wang, Q., Tan, B., Bao, H., Xie, Y., Mou, Y., Li, P., Chen, D., Shi, Y., Li, X., and Yang, W., 2019, Evaluation of Ficus tikoua leaves extract as an eco-friendly corrosion inhibitor for carbon steel in HCl media, Biochemistry, 128, 49–55.

[35] Loto, R.T., and Loto, C.A., 2018, Anti-corrosion properties of the symbiotic effect of Rosmarinus officinalis and trypsin complex on medium carbon steel, Results Phys., 10, 99–106.

[36] Majd, M.T., Ramezanzadeh, M., Ramezanzadeh, B., and Bahlakeh, G., 2020, Production of an environmentally stable anti-corrosion film based on Esfand seed extract molecules-metal cations: Integrated experimental and computer modeling approaches, J. Hazard. Mater., 382, 121029.

[37] Ngobiri, N.C., Oguzie, E.E., Oforka, N.C., and Akaranta, O., 2019, Comparative study on the inhibitive effect of Sulfadoxine–Pyrimethamine and an industrial inhibitor on the corrosion of pipeline steel in petroleum pipeline water, Arabian J. Chem., 12 (7), 1024–1034.

[38] Ngobiri, N.C., and Okorosaye-Orubite, K., 2018, Corrosion pattern of pipeline steel in petroleum pipeline water in the presence of bio-mass derived extracts of Brassica oleracea and Citrus paradise mesocarp, Mater. Sci. Appl., 9 (1), 216–141.

[39] Obot, I.B., Umoren, S.A., and Ankah, N.K., 2019, Pyrazine derivatives as green oil field corrosion inhibitors for steel, J. Mol. Liq., 277, 749–761.

[40] Ogunleye, O.O., Arinkoola, A.O., Eletta, O.A., Agbede, O.O., Osho, Y.A., Morakinyo, A.F., and Hamed, J.O., 2020, Green corrosion inhibition and adsorption characteristics of Luffa cylindrica leaf extract on mild steel in hydrochloric acid environment, Heliyon, 6 (1), e03205.

[41] Ahmed, M.H.O., Al-Amiery, A.A., Al-Majedy, Y.K., Kadhum, A.A.H., Mohamad, A.B., and Gaaz, T.S., 2018, Synthesis and characterization of a novel organic corrosion inhibitor for mild steel in 1 M hydrochloric acid, Results Phys., 8, 728–733.

[42] Othman, N.K., Yahya, S., and Ismail, M.C., 2019, Corrosion inhibition of steel in 3.5% NaCl by rice straw extract, J. Ind. Eng. Chem., 70, 299–310.

[43] Qiang, Y., Zhang, S., Tan, B., and Chen, S., 2018, Evaluation of Ginkgo leaf extract as an eco-friendly corrosion inhibitor of X70 steel in HCl solution, Corros. Sci., 133, 6–16.

[44] Radwan, A.B., Sliem, M.H., Yusuf, N.S., Alnuaimi, N.A., and Abdullah, A.M., 2019, Enhancing the corrosion resistance of reinforcing steel under aggressive operational conditions using behentrimonium chloride, Sci. Rep., 9 (1), 18115.

[45] Rodič, P., and Milošev, I., 2019, The influence of additional salts on corrosion inhibition by cerium(III) acetate in the protection of AA 7075-T6 in chloride solution, Corros. Sci., 149, 108–122.

[46] Sangeetha, C., Chinnakani, C., Selvaraj, S., 2020, Jatropha gossyfolia – A green inhibitor act as anticorrosive agent on carbon steel, J. Adv. Sci. Res., 11 (1), 180–186.

[47] Sanni, O., Popoola, A.P.I., and Fayomi, O.S.I., 2018, Enhanced corrosion resistance of stainless steel type 316 in sulphuric acid solution using eco-friendly waste product, Results Phys., 9, 225–230.

[48] Shahzad, K., Sliem, M., Shakoor, R.A., Radwan, A.B., Kahraman, R., Umer, M.A., Manzoor, U., Abdullah, A.M., 2020, Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution, Sci. Rep., 10 (1), 4314.

[49] Singh, D.K., Ebenso, E.E., Singh, M.K., Behera, D., Udayabhanu, G., and John, R.P., 2018, Non-toxic Schiff bases as efficient corrosion inhibitors for mild steel in 1 M HCl: Electrochemical, AFM, FE-SEM and theoretical studies, J. Mol. Liq., 250, 88–99.

[50] Ikeuba, A.I., Ita, B.I., Okafor, P.C., Ugi, B.U., and Kporokpo, E.B., 2015, Green corrosion inhibitors for mild steel in H2SO4 solution: Comparative study of flavonoids extracted from Gongronema latifolium with crude extract, Prot. Met. Phys. Chem, 51 (6), 1043–1049.

[51] Solomon, M.M., Umoren, S.A., Quraishi, M.A., Tripathi, D.B., and Abai, E.J., 2020, Effect of akyl chain length, flow, and temperature on the corrosion inhibition of carbon steel in a simulated acidizing environment by an imidazoline-based inhibitor, J. Pet. Sci. Eng., 187, 106801.

[52] Tamalmani, K., and Husin, H., 2020, Review on corrosion inhibitors for oil and gas corrosion issues, Appl. Sci., 10 (10), 3389.

[53] Tian, H., Li, W., Liu, A., Gao, X., Han, P., Ding, R., Yang, C., and Wang, D., 2018, Controlled delivery of multi-substituted triazole by metal-organic framework for efficient inhibition of mild steel corrosion in neutral chloride solution, Corros. Sci., 131, 1–16.

[54] Khayyun, T.S., and Mseer, A.H., 2019, Comparison of the experimental results with the Langmuir and Freundlich models for copper removal on limestone adsorbent, Appl. Water Sci., 9 (8), 170.

[55] Umoren, S.A., Ebenso, E.E., 2008, Studies of the anti-corrosive effect of Raphia hookeri exudate gum-halide mixtures for aluminium corrosion in acidic medium, Pigm. Resin Technol., 37 (3), 173–182.

[56] Tian, Y., and Zheng, M., 2019, Inhibition effect of silicate and molybdate on the corrosion of SS 316 in neutral corrosive solution at high temperature, Mater. Res. Express, 6, 096569.

[57] Wang, C., Chen, J., Han, J., Wang, C., and Hu, B., 2019, Enhanced corrosion inhibition performance of novel modified polyaspartic acid on carbon steel in HCl solution, J. Alloys Compd., 771, 736–746.

[58] Wang, X., Jiang, H., Zhang, D., Hou, L., and Zhou, W., 2019, Solanum lasiocarpum extract as green corrosion inhibitor for A3 steel in 1 M HCl solution, Int. J. Electrochem. Sci., 14, 1178–1196.

[59] Zeino, A., Abdulazeez, I., Khaled, M., Jawich, M.W., and Obot, I.B., 2018, Mechanistic study of polyaspartic acid (PASP) as eco-friendly corrosion inhibitor on mild steel in 3% NaCl aerated solution, J. Mol. Liq., 250, 50–62.

[60] Ugi, B.U., Bassey, V.M., Obeten, M.E., Adalikwu, S.A., and Nandi, D.O., 2020, Secondary plant metabolites of natural product origin-Strongylodon macrobotrys as pitting corrosion inhibitors of steel around heavy salt deposits in Gabu, Nigeria, J. Mater. Sci. Chem. Eng., 8 (5), 38–60.


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