Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4

Vincent Ishmael Egbulefu Ajiwe; Chinedu Emmanuel Ejike

doi:doi:10.11648/j.css.20200501.12

| Peer-Reviewed

Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H₂SO₄

Vincent Ishmael Egbulefu Ajiwe, Chinedu Emmanuel Ejike

Published in Colloid and Surface Science (Volume 5, Issue 1)

Received: 28 November 2019 Accepted: 20 December 2019 Published: 8 January 2020

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

The inhibition effects of methanol leaf extract of Talinum triangulare on the corrosion of mild steel in 0.4, 0.5, 0.6 and 2.5M H₂SO₄ solution were determined in this study. The inhibition efficiency was evaluated and the mechanism of inhibition determined, with a view to determining the inhibitive potentials of the inhibitor with regard to corrosivity of acid solutions used in oil pipelines, water treatment systems and descaling of equipment. Weight loss and gasometric techniques were used for the corrosion study of the metal. The weight loss method of corrosion tests was carried out at 2, 4, 6, 8 and 10 hours of exposure using various concentrations of extract (0.2, 0.4 and 0.6) g/L at different temperatures (303K, 313K and 323K) in varying acid concentration (0.4M, 0.5M and 0.6M). The gasometric measurements were carried out at 5, 10, 15, 20, 25 and 30 minutes exposure time using various concentrations of extract (0.2, 0.4 and 0.6) g/L in 2.5M H₂SO₄ solution. Weight loss measurements were also carried out concurrently with gasometric measurements to compare methodological variation in data between them. The phytochemical screening results revealed the presence of tannins, saponnins, flavonoids, terpenes, steroids and alkaloids. From the results, the corrosion rates decreased with increase in inhibitor concentration. The maximum inhibition efficiency of the extract for the weight loss measurements are 70.77% for 0.6g/L in 0.4M H₂SO₄ at 303K, 54.86% for 0.6g/L in 0.5M H₂SO₄ at 303K and 61.66% for 0.6g/L in 0.6M at 303K. In 2.5M H₂SO₄, the maximum inhibition efficiency was observed to be 59.31% for 0.6g/L inhibitor concentration at 308K for the gasometric method and 53.38% for 0.6g/L at 308K for the weight loss method. The kinetic and thermodynamic studies showed that the activation energy (E_a) in the presence of inhibitor is greater than in the absence of inhibitor at all the temperatures studied. The reaction was proposed to be first order having shown good correlation (R²≈1) with the first order rate law, and the half-life (t_1/2) values were obtained from the graphs of the rate law. The mechanism of physical adsorption was proposed for the extract, as within the temperature range investigated the E_a and ∆G^o_ads values are less than 80kJ/mol and -20kJ/mol respectively.

Published in	Colloid and Surface Science (Volume 5, Issue 1)
DOI	10.11648/j.css.20200501.12
Page(s)	6-12
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Methanol Leaf Extract, Talinum triangulare, Corrosion Inhibition

References

[1]	Olorunfemi, M. A., Jamiu, K. O., Raheem, A. Y. (2014). Inhibition of mild steel corrosion using Jatropha Curcas leaf extract. Journal of Electrochemical Science and Engineering. 4 (2): 67-74.
[2]	Alaneme, K. K. (2011). Corrosion Behaviour of Heat Treated Al-6063/ SiCp Composites Immersed in 5 wt% NaCl Solution. Leonardo Journal of Science, 18 (5): 55-64.
[3]	Jano, A., Lame, A., Kokalari, E. (2012). Use of Extracted Green Inhibitors as a Friendly Choice in Corrosion Protection. Kemija u Industriji. 61 (11-12) 497–503.
[4]	Aisha, M. A., Nabeeh, M. A. (2012). Inhibition of Mild Steel Corrosion Using Plectranthus tenuifloros (Sahara) Plant as Safe and Green Inhibitor in Acidic solutions. Global Journal of Science and Frontier Research Chemistry 12 (1): 73-84.
[5]	Al-Sehaibani, A. (2000). Evaluation of Extracts of Henna Leaves as Environmentally Friendly Corrosion Inhibitors for Metals. Material Wissenchaft and Werkstofftechnik. 12 (31): 1060-1063.
[6]	Eddy, N. O., Ebenso, E. E. (2008). Adsorption and inhibitive properties of ethanol extracts of Musa sapientum peels as a green corrosion inhibitor for mild steel in H₂SO₄. African Journal of Pure and Applied Chemistry. 2 (6): 046-054.
[7]	Eddy, N. O., Ekwumemgbo, P. A. and Mamza, P. A. P. (2009). Ethanol extract of Terminalia catappa as a green inhibitor for the corrosion of mild steel in H₂SO₄. Green Chemistry Letters and Reviews. 2 (4): 223-231.
[8]	Makanjuola, O., Ebitei, C., Collins, A., Tambari, K. O. (2011). Corrosion Inhibition of Mild Steel in Hydrochloric Acid by Tannins from Rhizophora Racemosa. Materials Sciences and Applications. 2: 592-595.
[9]	Ajiwe, V. I. E., Ejike, C. E. (2019). Corrosion inhibition of mild steel in sulphuric acid by methanol leaf extracts of Milicia Excelsa. Open Science Journal of Analytical Chemistry. 4 (2): 13-19.
[10]	Ajiwe, V. I. E., Agupugo, C. I., Umeh, S. O., Nnabuenyi, H. O. (2008). The preliminary study of the Pharmaceutical constituents of Pterocarpus soyauxi (Oha-ocha). Anachem Journal. 13 (2): 505-511.
[11]	Sofowora, A. (2008). Medicinal plants and Traditional Medicine in Africa. 3rd edition. Spectrum Books, Ibadan, Nigeria. Pp-228.
[12]	Obianime, A. W., Uche, F. I. (2008). The phytochemical screening and effects of methanolic extract of Phyllanthus amarus leaf on the biochemical parameters of male guinea pigs. Journal of Applied Sciences and Environmental Management. 12 (4): 73-77.
[13]	Olasehinde, E. F., Olusegun, S. J., Adesina, A. S., Omogbehin, S. A., Momoh-Yahayah, H. (2013). Inhibitory action of Nicotiana tabacum extracts on the corrosion of mild steel in HCl: Adsorption and Thermodynamics Study. Nature and Science. 11 (1): 83-90.
[14]	Raja, P. B., Rahim, A. A., Osman, H. and Awang, K. (2010). Inhibitory effect of Kopsia singapurensis extract on the corrosion behavior of mild steel in acid media. Acta Physico-Chimica Sinica. 26 (8): 2171-2176.
[15]	Nnanna, L. A., Onwuagba, B. N., Mejeha, I. M. and Okeoma, K. B. (2010). Inhibition effects of some plant extracts on the acid corrosion of aluminium alloy. African Journal of Pure and Applied Chemistry. 4 (1): 011-016.
[16]	Helen, L. Y. S., Rahim, A. A., Saad, B., Saleh, M. I., Bothi, R. P. (2014). Aquilaria Crassna Leaves Extracts a Green Corrosion Inhibitor for Mild Steel in 1M HCl Medium. International Journal of electrochemical Science. 9: 830-846.
[17]	Subir, P., Bikash K. (2012). Mitigation of Mild Steel Corrosion in Acid by Green Inhibitors: Yeast, Pepper, Garlic, and Coffee. ISRN Corrosion. 2012: ID 641386.
[18]	Murugavel S. C., Gunavathy N. (2012). Corrosion Inhibition Studies of Mild Steel in Acid Medium Using Musa Acuminata Fruit Peel Extract. E-Journal of Chemistry. 9 (1): 487-495.
[19]	Umoren, S. A., Ebenso, E. E. (2008). Studies of anti-corrosion effect of Raphia hookeri exudates gum-halide mixtures for aluminium corrosion in acidic medium. Pigment and Resin Technology. 37 (3): 173-182.
[20]	Ebenso, E. E., Eddy, N. O., Odiongenyi, A. O. (2008). Corrosion inhibitive properties and adsorption behavior of ethanol extract of Piper guinensis as a green corrosion inhibitor for mild steel in H₂SO₄. African Journal of Pure and Applied Chemistry. 2 (11): 107-115.
[21]	Umoren, S. A., Ogbobe, O., and Ebenso, E. E. (2006). Synergistic inhibition of aluminium corrosion in acidic medium by gum Arabic and halide ions. Transactions of the SAEST. 41: 74-81.
[22]	Mourya P., Banerjee S., Singh M. M. (2014). Corrosion inhibition of mild steel in acidic solution by Tagetes erecta (Marigold flower) extract as a green inhibitor. Corrosion Science. 85: 352–363.
[23]	Umoren, S. A., Obot, I. B., Obi-Egbedi, N. O. (2009). Raphia hookeri gum as a potential eco-friendly inhibitor for mild steel in sulfuric acid. Journal of Material Science. 44: 274-279.
[24]	Ebenso, E. E., Okafor, P. C., Offiong, O. E., Ita, B. I., Ibok, U. J., Ekpe, U. J. (2001). Comparative investigation into the kinetics of corrosion inhibition of aluminium alloy AA1060 in acidic medium. Bulletin of Electrochemistry. 17: 459-464.
[25]	Ebenso, E. E. (2003). Synergistic effect of halide ions on the corrosion inhibition of aluminium in H₂SO₄ using 2-acetylphenothiazine. Materials Chemistry and Physics. 79 (1): 58-70.
[26]	Larouj, M., Ourrak, K., El M’Rabet, M., Zarrok, H., Serrar, H., Boudalia, M., Boukhriss, S., Warad, I., Oudda, H., Touir, R. (2017). Thermodynamic study of corrosion inhibition of carbon steel in acidic solution by new pyrimidothiazine derivative. Journal of Materials and Environmental Sciences. 8 (11): 3921-3931.
[27]	Oza, B. N., Singha, R. S. (1982). Thermometric study of corrosion behaviour of high strength Al-Mg alloy in phosphoric acid in presence of halides. Transactions of the SAEST. 17 (4): 281- 285.
[28]	Nwosu, O. F., Osarolube, E., Nnanna, L. A., Akoma, C. S., Chigbu, T. (2014). Acidic Corrosion Inhibition of Piper guineense Seed Extract on Al Alloy. American Journal of Materials Science. 4 (4): 178-183.

Cite This Article

Plain Text BibTeX RIS

APA Style

Vincent Ishmael Egbulefu Ajiwe, Chinedu Emmanuel Ejike. (2020). Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid and Surface Science, 5(1), 6-12. https://doi.org/10.11648/j.css.20200501.12

Copy | Download

ACS Style

Vincent Ishmael Egbulefu Ajiwe; Chinedu Emmanuel Ejike. Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid Surf. Sci. 2020, 5(1), 6-12. doi: 10.11648/j.css.20200501.12

Copy | Download

AMA Style

Vincent Ishmael Egbulefu Ajiwe, Chinedu Emmanuel Ejike. Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid Surf Sci. 2020;5(1):6-12. doi: 10.11648/j.css.20200501.12

Copy | Download

@article{10.11648/j.css.20200501.12,
  author = {Vincent Ishmael Egbulefu Ajiwe and Chinedu Emmanuel Ejike},
  title = {Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4},
  journal = {Colloid and Surface Science},
  volume = {5},
  number = {1},
  pages = {6-12},
  doi = {10.11648/j.css.20200501.12},
  url = {https://doi.org/10.11648/j.css.20200501.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.css.20200501.12},
  abstract = {The inhibition effects of methanol leaf extract of Talinum triangulare on the corrosion of mild steel in 0.4, 0.5, 0.6 and 2.5M H2SO4 solution were determined in this study. The inhibition efficiency was evaluated and the mechanism of inhibition determined, with a view to determining the inhibitive potentials of the inhibitor with regard to corrosivity of acid solutions used in oil pipelines, water treatment systems and descaling of equipment. Weight loss and gasometric techniques were used for the corrosion study of the metal. The weight loss method of corrosion tests was carried out at 2, 4, 6, 8 and 10 hours of exposure using various concentrations of extract (0.2, 0.4 and 0.6) g/L at different temperatures (303K, 313K and 323K) in varying acid concentration (0.4M, 0.5M and 0.6M). The gasometric measurements were carried out at 5, 10, 15, 20, 25 and 30 minutes exposure time using various concentrations of extract (0.2, 0.4 and 0.6) g/L in 2.5M H2SO4 solution. Weight loss measurements were also carried out concurrently with gasometric measurements to compare methodological variation in data between them. The phytochemical screening results revealed the presence of tannins, saponnins, flavonoids, terpenes, steroids and alkaloids. From the results, the corrosion rates decreased with increase in inhibitor concentration. The maximum inhibition efficiency of the extract for the weight loss measurements are 70.77% for 0.6g/L in 0.4M H2SO4 at 303K, 54.86% for 0.6g/L in 0.5M H2SO4 at 303K and 61.66% for 0.6g/L in 0.6M at 303K. In 2.5M H2SO4, the maximum inhibition efficiency was observed to be 59.31% for 0.6g/L inhibitor concentration at 308K for the gasometric method and 53.38% for 0.6g/L at 308K for the weight loss method. The kinetic and thermodynamic studies showed that the activation energy (Ea) in the presence of inhibitor is greater than in the absence of inhibitor at all the temperatures studied. The reaction was proposed to be first order having shown good correlation (R2≈1) with the first order rate law, and the half-life (t1/2) values were obtained from the graphs of the rate law. The mechanism of physical adsorption was proposed for the extract, as within the temperature range investigated the Ea and ∆Goads values are less than 80kJ/mol and -20kJ/mol respectively.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4
AU  - Vincent Ishmael Egbulefu Ajiwe
AU  - Chinedu Emmanuel Ejike
Y1  - 2020/01/08
PY  - 2020
N1  - https://doi.org/10.11648/j.css.20200501.12
DO  - 10.11648/j.css.20200501.12
T2  - Colloid and Surface Science
JF  - Colloid and Surface Science
JO  - Colloid and Surface Science
SP  - 6
EP  - 12
PB  - Science Publishing Group
SN  - 2578-9236
UR  - https://doi.org/10.11648/j.css.20200501.12
AB  - The inhibition effects of methanol leaf extract of Talinum triangulare on the corrosion of mild steel in 0.4, 0.5, 0.6 and 2.5M H2SO4 solution were determined in this study. The inhibition efficiency was evaluated and the mechanism of inhibition determined, with a view to determining the inhibitive potentials of the inhibitor with regard to corrosivity of acid solutions used in oil pipelines, water treatment systems and descaling of equipment. Weight loss and gasometric techniques were used for the corrosion study of the metal. The weight loss method of corrosion tests was carried out at 2, 4, 6, 8 and 10 hours of exposure using various concentrations of extract (0.2, 0.4 and 0.6) g/L at different temperatures (303K, 313K and 323K) in varying acid concentration (0.4M, 0.5M and 0.6M). The gasometric measurements were carried out at 5, 10, 15, 20, 25 and 30 minutes exposure time using various concentrations of extract (0.2, 0.4 and 0.6) g/L in 2.5M H2SO4 solution. Weight loss measurements were also carried out concurrently with gasometric measurements to compare methodological variation in data between them. The phytochemical screening results revealed the presence of tannins, saponnins, flavonoids, terpenes, steroids and alkaloids. From the results, the corrosion rates decreased with increase in inhibitor concentration. The maximum inhibition efficiency of the extract for the weight loss measurements are 70.77% for 0.6g/L in 0.4M H2SO4 at 303K, 54.86% for 0.6g/L in 0.5M H2SO4 at 303K and 61.66% for 0.6g/L in 0.6M at 303K. In 2.5M H2SO4, the maximum inhibition efficiency was observed to be 59.31% for 0.6g/L inhibitor concentration at 308K for the gasometric method and 53.38% for 0.6g/L at 308K for the weight loss method. The kinetic and thermodynamic studies showed that the activation energy (Ea) in the presence of inhibitor is greater than in the absence of inhibitor at all the temperatures studied. The reaction was proposed to be first order having shown good correlation (R2≈1) with the first order rate law, and the half-life (t1/2) values were obtained from the graphs of the rate law. The mechanism of physical adsorption was proposed for the extract, as within the temperature range investigated the Ea and ∆Goads values are less than 80kJ/mol and -20kJ/mol respectively.
VL  - 5
IS  - 1
ER  -

Copy | Download

Author Information

Vincent Ishmael Egbulefu Ajiwe

Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
Chinedu Emmanuel Ejike

Department of Environmental Biotechnology, National Biotechnology Development Agency, Abuja, Nigeria

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Vincent Ishmael Egbulefu Ajiwe, Chinedu Emmanuel Ejike. (2020). Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid and Surface Science, 5(1), 6-12. https://doi.org/10.11648/j.css.20200501.12

Copy | Download

ACS Style

Vincent Ishmael Egbulefu Ajiwe; Chinedu Emmanuel Ejike. Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid Surf. Sci. 2020, 5(1), 6-12. doi: 10.11648/j.css.20200501.12

Copy | Download

AMA Style

Vincent Ishmael Egbulefu Ajiwe, Chinedu Emmanuel Ejike. Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4. Colloid Surf Sci. 2020;5(1):6-12. doi: 10.11648/j.css.20200501.12

Copy | Download

@article{10.11648/j.css.20200501.12,
  author = {Vincent Ishmael Egbulefu Ajiwe and Chinedu Emmanuel Ejike},
  title = {Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4},
  journal = {Colloid and Surface Science},
  volume = {5},
  number = {1},
  pages = {6-12},
  doi = {10.11648/j.css.20200501.12},
  url = {https://doi.org/10.11648/j.css.20200501.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.css.20200501.12},
  abstract = {The inhibition effects of methanol leaf extract of Talinum triangulare on the corrosion of mild steel in 0.4, 0.5, 0.6 and 2.5M H2SO4 solution were determined in this study. The inhibition efficiency was evaluated and the mechanism of inhibition determined, with a view to determining the inhibitive potentials of the inhibitor with regard to corrosivity of acid solutions used in oil pipelines, water treatment systems and descaling of equipment. Weight loss and gasometric techniques were used for the corrosion study of the metal. The weight loss method of corrosion tests was carried out at 2, 4, 6, 8 and 10 hours of exposure using various concentrations of extract (0.2, 0.4 and 0.6) g/L at different temperatures (303K, 313K and 323K) in varying acid concentration (0.4M, 0.5M and 0.6M). The gasometric measurements were carried out at 5, 10, 15, 20, 25 and 30 minutes exposure time using various concentrations of extract (0.2, 0.4 and 0.6) g/L in 2.5M H2SO4 solution. Weight loss measurements were also carried out concurrently with gasometric measurements to compare methodological variation in data between them. The phytochemical screening results revealed the presence of tannins, saponnins, flavonoids, terpenes, steroids and alkaloids. From the results, the corrosion rates decreased with increase in inhibitor concentration. The maximum inhibition efficiency of the extract for the weight loss measurements are 70.77% for 0.6g/L in 0.4M H2SO4 at 303K, 54.86% for 0.6g/L in 0.5M H2SO4 at 303K and 61.66% for 0.6g/L in 0.6M at 303K. In 2.5M H2SO4, the maximum inhibition efficiency was observed to be 59.31% for 0.6g/L inhibitor concentration at 308K for the gasometric method and 53.38% for 0.6g/L at 308K for the weight loss method. The kinetic and thermodynamic studies showed that the activation energy (Ea) in the presence of inhibitor is greater than in the absence of inhibitor at all the temperatures studied. The reaction was proposed to be first order having shown good correlation (R2≈1) with the first order rate law, and the half-life (t1/2) values were obtained from the graphs of the rate law. The mechanism of physical adsorption was proposed for the extract, as within the temperature range investigated the Ea and ∆Goads values are less than 80kJ/mol and -20kJ/mol respectively.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Talinum triangulare (Waterleaf) Methanol Leaf Extract as Corrosion Inhibitor on Mild Steel Surface in H2SO4
AU  - Vincent Ishmael Egbulefu Ajiwe
AU  - Chinedu Emmanuel Ejike
Y1  - 2020/01/08
PY  - 2020
N1  - https://doi.org/10.11648/j.css.20200501.12
DO  - 10.11648/j.css.20200501.12
T2  - Colloid and Surface Science
JF  - Colloid and Surface Science
JO  - Colloid and Surface Science
SP  - 6
EP  - 12
PB  - Science Publishing Group
SN  - 2578-9236
UR  - https://doi.org/10.11648/j.css.20200501.12
AB  - The inhibition effects of methanol leaf extract of Talinum triangulare on the corrosion of mild steel in 0.4, 0.5, 0.6 and 2.5M H2SO4 solution were determined in this study. The inhibition efficiency was evaluated and the mechanism of inhibition determined, with a view to determining the inhibitive potentials of the inhibitor with regard to corrosivity of acid solutions used in oil pipelines, water treatment systems and descaling of equipment. Weight loss and gasometric techniques were used for the corrosion study of the metal. The weight loss method of corrosion tests was carried out at 2, 4, 6, 8 and 10 hours of exposure using various concentrations of extract (0.2, 0.4 and 0.6) g/L at different temperatures (303K, 313K and 323K) in varying acid concentration (0.4M, 0.5M and 0.6M). The gasometric measurements were carried out at 5, 10, 15, 20, 25 and 30 minutes exposure time using various concentrations of extract (0.2, 0.4 and 0.6) g/L in 2.5M H2SO4 solution. Weight loss measurements were also carried out concurrently with gasometric measurements to compare methodological variation in data between them. The phytochemical screening results revealed the presence of tannins, saponnins, flavonoids, terpenes, steroids and alkaloids. From the results, the corrosion rates decreased with increase in inhibitor concentration. The maximum inhibition efficiency of the extract for the weight loss measurements are 70.77% for 0.6g/L in 0.4M H2SO4 at 303K, 54.86% for 0.6g/L in 0.5M H2SO4 at 303K and 61.66% for 0.6g/L in 0.6M at 303K. In 2.5M H2SO4, the maximum inhibition efficiency was observed to be 59.31% for 0.6g/L inhibitor concentration at 308K for the gasometric method and 53.38% for 0.6g/L at 308K for the weight loss method. The kinetic and thermodynamic studies showed that the activation energy (Ea) in the presence of inhibitor is greater than in the absence of inhibitor at all the temperatures studied. The reaction was proposed to be first order having shown good correlation (R2≈1) with the first order rate law, and the half-life (t1/2) values were obtained from the graphs of the rate law. The mechanism of physical adsorption was proposed for the extract, as within the temperature range investigated the Ea and ∆Goads values are less than 80kJ/mol and -20kJ/mol respectively.
VL  - 5
IS  - 1
ER  -

Copy | Download