EVALUATION OF INHIBITORY EFFECT OF PLANTS EXTRACT ON ZINC IMMERSED IN 0.1M HCl

Ezeugo, J. N. O.; Onukwuli, O. D.; Nwanekezie, M. N.; Umeonyiagu, I. E.

Authors & affiliations

Ezeugo, J. N. O.

Chemical Engineering Department, Chukwuemea Odumegwu Ojukwu University, Uli, Anambra State

Onukwuli, O. D.

Chemical Engineering Department, Nnamdi Azikwe University Awka, Anambra State

Nwanekezie, M. N.

Chemical Engineering Department, Chukwuemea Odumegwu Ojukwu University, Uli, Anambra State

Umeonyiagu, I. E.

Civil Engineering Department, Chukwuemea Odumegwu Ojukwu University, Uli, Anambra State

Abstract

Summary

The inhibitive action of the ethanol extract of oil from Picralima nitida seeds, towards acid
corrosion of zinc, is tested using weight loss, and thermometry methods. It was found that the
extract acts as a good corrosion inhibitor for zinc corrosion in 0.1M HCl solution. The
inhibitory action of the extract was discussed in view of Langmuir adsorption isotherm. It was
revealed that the adsorption of the extract on zinc surface is governed by spontaneous process.
The inhibition efficiency (IE) increases in line with corresponding increase in extract
concentration. The temperature effect of the corrosion inhibition on the IE was studied.
Revelation from the studies indicated that the presence of extract increases the activation energy
of the corrosion reaction. Furthermore, from the calculated thermodynamic parameters, it was
observed that Picralima nitida extract provides good protection to zinc against pitting corrosion
in chloride ion containing solutions.

Keywords

Index Terms

Zinc Corrosion Picralima Nitida Seed Inhibitor

Citation & details

How to cite this article

Authors: Ezeugo, J. N. O., Onukwuli, O. D., Nwanekezie, M. N., Umeonyiagu, I. E.

Volume/Issue: Volume 2, Issue 1

Pages: 1-11

Published: February 28, 2018

Affiliations: Chemical Engineering Department, Chukwuemea Odumegwu Ojukwu University, Uli, Anambra State, Chemical Engineering Department, Nnamdi Azikwe University Awka, Anambra State, Civil Engineering Department, Chukwuemea Odumegwu Ojukwu University, Uli, Anambra State

Ezeugo, J. N. O., Onukwuli, O. D., Nwanekezie, M. N., Umeonyiagu, I. E. (2018). EVALUATION OF INHIBITORY EFFECT OF PLANTS EXTRACT ON ZINC IMMERSED IN 0.1M HCl. International Journal of Innovative Engineering, Technology & Science (IJIETS), Volume 2, Issue 1, 1-11.

Ezeugo, J. N. O., Onukwuli, O. D., Nwanekezie, M. N., Umeonyiagu, I. E.. "EVALUATION OF INHIBITORY EFFECT OF PLANTS EXTRACT ON ZINC IMMERSED IN 0.1M HCl." International Journal of Innovative Engineering, Technology & Science (IJIETS), vol. Volume 2, Issue 1, 2018, pp. 1-11.

Ezeugo, J. N. O., Onukwuli, O. D., Nwanekezie, M. N., Umeonyiagu, I. E.. "EVALUATION OF INHIBITORY EFFECT OF PLANTS EXTRACT ON ZINC IMMERSED IN 0.1M HCl." International Journal of Innovative Engineering, Technology & Science (IJIETS) Volume 2, Issue 1 (2018): 1-11.

@article{evaluationofinhibitoryeffectofplantsextractonzincimmersedin01mhcl2018, author = {Ezeugo, J. N. O. and Onukwuli, O. D. and Nwanekezie, M. N. and Umeonyiagu, I. E.}, title = {EVALUATION OF INHIBITORY EFFECT OF PLANTS EXTRACT ON ZINC IMMERSED IN 0.1M HCl}, journal = {International Journal of Innovative Engineering, Technology & Science (IJIETS)}, year = {2018}, volume = {Volume 2, Issue 1}, pages = {1-11} }

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