Chemical Science & Engineering Research
Title
Inhibition of Pipeline Steel Corrosion in 0.5 M HCL using Ethanolic Extract of Citrus Sinensis Seeds
Authors
Nnaemeka Chinedu Ngobiria and Temple Nwoburuigwe Chikwe*b
Department of Pure and Industrial Chemistry, University of Port Harcourt, Port Harcourt, Nigeria
*Corresponding author E-mail address: templechikwe@yahoo.co.uk (Temple Chikwe)
Article History
Publication Details: Received: 23rd January 2020, Revised: 10th February 2020, Accepted: 10th February 2020, Published: 17th February 2020
Cite this article
Nnaemeka C. N.; Temple N. C. Inhibition of Pipeline Steel Corrosion in 0.5 M HCL using Ethanolic Extract of Citrus Sinensis Seeds. Chem. Sci. Eng. Res., 2020, 2(3), 1-6.
Abstract
Inhibitive action of ethanolic extract of Citrus sinensis seeds on the corrosion of pipeline steel in monobasic acid medium (0.5 M HCl) was studied using gravimetric method. Adsorption isotherm models were mainly used to elucidate the inhibition mechanism of ethanolic extract of Citrus sinensis seeds in 0.5 M HCl. Surface morphology of pipeline steel before and after inhibition were studied by scanning electron microscope (SEM). Results obtained showed that Citrus sinensis seed extract inhibited pipeline steel corrosion in 0.5 M HCl environment. The corrosion inhibition efficiency increased with increased concentration of the Citrus sinensis seed extract and decreased with raise in environmental temperature in the acidic medium. The corrosion inhibition data fitted better into Freundlich adsorption model, while the presence of the extract gave a smoother corrosion surface morphology.
Keywords
Corrosion inhibition; Plant extract; Citrus sinensis; Adsorption; Surface morphology
