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Original scientific paper
https://doi.org/10.5599/jese.2014.0046

Inhibition of mild steel corrosion using Jatropha Curcas leaf extract

Olorunfemi Michael Ajayi ; Department of Mechanical Engineering, University of Ilorin, Ilorin, Nigeria
Jamiu Kolawole Odusote ; Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, Nigeria
Raheem Abolore Yahya ; Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, Nigeria

Fulltext: english, pdf (822 KB) pages 67-74 downloads: 681* cite
APA 6th Edition
Ajayi, O.M., Odusote, J.K. & Yahya, R.A. (2014). Inhibition of mild steel corrosion using Jatropha Curcas leaf extract. Journal of Electrochemical Science and Engineering, 4 (2), 67-74. https://doi.org/10.5599/jese.2014.0046
MLA 8th Edition
Ajayi, Olorunfemi Michael, et al. "Inhibition of mild steel corrosion using Jatropha Curcas leaf extract." Journal of Electrochemical Science and Engineering, vol. 4, no. 2, 2014, pp. 67-74. https://doi.org/10.5599/jese.2014.0046. Accessed 23 Sep. 2021.
Chicago 17th Edition
Ajayi, Olorunfemi Michael, Jamiu Kolawole Odusote and Raheem Abolore Yahya. "Inhibition of mild steel corrosion using Jatropha Curcas leaf extract." Journal of Electrochemical Science and Engineering 4, no. 2 (2014): 67-74. https://doi.org/10.5599/jese.2014.0046
Harvard
Ajayi, O.M., Odusote, J.K., and Yahya, R.A. (2014). 'Inhibition of mild steel corrosion using Jatropha Curcas leaf extract', Journal of Electrochemical Science and Engineering, 4(2), pp. 67-74. https://doi.org/10.5599/jese.2014.0046
Vancouver
Ajayi OM, Odusote JK, Yahya RA. Inhibition of mild steel corrosion using Jatropha Curcas leaf extract. Journal of Electrochemical Science and Engineering [Internet]. 2014 [cited 2021 September 23];4(2):67-74. https://doi.org/10.5599/jese.2014.0046
IEEE
O.M. Ajayi, J.K. Odusote and R.A. Yahya, "Inhibition of mild steel corrosion using Jatropha Curcas leaf extract", Journal of Electrochemical Science and Engineering, vol.4, no. 2, pp. 67-74, 2014. [Online]. https://doi.org/10.5599/jese.2014.0046

Abstracts
Jatropha Curcas leaf was investigated as a green inhibitor on the degradation of mild steel in 4 M HCl and 4 M H2SO4 aqueous solutions using gasometric technique. Mild steel coupons of dimension 2 × 1.5 cm were immersed in test solutions of uninhibited acid and also those with extract concentrations of 4 ml, 6 ml, 8 ml and 10 ml at 30 oC, for up to 30 minutes. The results showed that as the concentration of the extract increases, there was reduction in the corrosion rate. As the extract concentration increased from 4 ml to 10 ml at 30 minutes exposure, the volume of hydrogen gas evolved decreased from 19.1 cm3 to 11.2 cm3 in H2SO4 medium, while it reduced to 5 cm3 from 9 cm3 in HCl medium. Also, the metal surface-phytoconstituent interaction mechanism showed that 6 minutes is the best exposure time for the adsorption of the extract in both acidic media. The Jatropha Curcas leaf extract was adsorbed on the mild steel surface to inhibit corrosion, while the experimental data obtained at 30 minutes exposure in both acidic media were well fitted with the Langmuir adsorption isotherm. Hence, Jatropha Curcas leaf extract is a good and safe inhibitor in both acidic solutions.

Keywords
Gasometric; Inhibitor; adsorption; mild steel; Langmuir isotherm

Hrčak ID: 125181

URI
https://hrcak.srce.hr/125181

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