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Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures

E. U. Godwin- Nwakwasi, E. E. Elachi, M. A. Ezeokonkwo and C. Robert.

Abstract
One of the most effective ways of mitigating the corrosion of metals in various media is by using of corrosion inhibitors. Due to the harmful effects of chemical-based corrosion inhibitors, attention is now shifting to plant materials which are environmentally friendly. Therefore, this paper investigates the corrosion inhibition potentials of Ficus exasperata and Costus afer leaves extracts on the corrosion of mild steel in 0.5 M hydrochloric acid medium at different temperatures (303 – 343 K). Secondly, to determine the effect of temperature on the corrosion inhibition performance of Ficus exasperata and Costus afer. The weight loss method of corrosion measurement was used to evaluate the corrosion inhibition potentials of the plant extracts. The results showed that Ficus exasperata and Costus afer inhibited the corrosion of mild steel in hydrochloric acid medium at all temperatures. Corrosion rates decreased with increase in concentration of the extracts. Concentration of the extracts used (0.125 g/L, 0.25 g/L, 0.5 g/L, 1.25 g/L and 2.5 g/L) did not significantly (p > 0.05) affect the corrosion rate of mild steel in the acidic media. Corrosion rates increased with increase in temperature. Inhibition efficiencies of the extracts increased with increase in concentration of the extracts and decreased with increasing temperatures. The adsorption of the extracts on the metal surface occurred by physical adsorption. Ficus exasperata and Costus afer could serve as effective inhibitors for mild steel in acidic media and their efficiencies are affected by high temperatures

Key words: Corrosion rate, Inhibition efficiency, Temperature, Ficus exasperata, Costus afer


 
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How to Cite this Article
Pubmed Style

Nwakwasi EUG, Elachi EE, . Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nig. J. Basic Appl. Sci.. 2022; 30(2): 5-14. doi:10.4314/njbas.v30i2.2


Web Style

Nwakwasi EUG, Elachi EE, . Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. https://www.njbas-udus.com/?mno=121890 [Access: September 15, 2023]. doi:10.4314/njbas.v30i2.2


AMA (American Medical Association) Style

Nwakwasi EUG, Elachi EE, . Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nig. J. Basic Appl. Sci.. 2022; 30(2): 5-14. doi:10.4314/njbas.v30i2.2



Vancouver/ICMJE Style

Nwakwasi EUG, Elachi EE, . Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nig. J. Basic Appl. Sci.. (2022), [cited September 15, 2023]; 30(2): 5-14. doi:10.4314/njbas.v30i2.2



Harvard Style

Nwakwasi, E. U. G., Elachi, . E. E. & (2022) Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nig. J. Basic Appl. Sci., 30 (2), 5-14. doi:10.4314/njbas.v30i2.2



Turabian Style

Nwakwasi, E. U. Godwin-, E. E. Elachi, and M. A. Ezeokonkwo and C. Robert. 2022. Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nigerian Journal of Basic and Applied Sciences, 30 (2), 5-14. doi:10.4314/njbas.v30i2.2



Chicago Style

Nwakwasi, E. U. Godwin-, E. E. Elachi, and M. A. Ezeokonkwo and C. Robert. "Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures." Nigerian Journal of Basic and Applied Sciences 30 (2022), 5-14. doi:10.4314/njbas.v30i2.2



MLA (The Modern Language Association) Style

Nwakwasi, E. U. Godwin-, E. E. Elachi, and M. A. Ezeokonkwo and C. Robert. "Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures." Nigerian Journal of Basic and Applied Sciences 30.2 (2022), 5-14. Print. doi:10.4314/njbas.v30i2.2



APA (American Psychological Association) Style

Nwakwasi, E. U. G., Elachi, . E. E. & (2022) Corrosion Inhibition Effects of Ficus exasperatae and Costus afer in Acidic Medium at Different Temperatures. Nigerian Journal of Basic and Applied Sciences, 30 (2), 5-14. doi:10.4314/njbas.v30i2.2





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