Inhibition of mild steel corrosion in HCl solution using chitosan

Saviour A. Umoren; Mauro J. Banera; Teodoro Alonso-Garcia; Claudio A. Gervasi; Maria V. Mirífico

doi:10.1007/s10570-013-0021-5

Inhibition of mild steel corrosion in HCl solution using chitosan

Saviour A. Umoren, Mauro J. Banera, Teodoro Alonso-Garcia, Claudio A. Gervasi, Maria V. Mirífico

Research output: Contribution to journal › Article › peer-review

193 Scopus citations

Abstract

The efficiency of chitosan (a naturally occurring polymer) as a corrosion inhibitor for mild steel in 0.1 M HCl was investigated by gravimetric, potentiodynamic polarization, electrochemical impedance spectroscopy measurements, scanning electron microscopy, and UV-visible analysis. The polymer was found to inhibit corrosion even at a very low concentration. Inhibition efficiency increases with a rise in temperature up to 96 % at 60 °C and then drops to 93 % at 70 °C, while it slightly increases with an increase in chitosan concentration. Polarization curves indicate that chitosan functions as a mixed inhibitor, affecting both cathodic and anodic partial reactions. Impedance results indicate that chitosan was adsorbed on the metal/solution interface. Adsorption of chitosan at the mild steel surface is found to be in agreement with Langmuir adsorption isotherm model. Chemical adsorption is the proposed mechanism for corrosion inhibition considering the trend of protection efficiency with temperature. Calculated kinetic and thermodynamic parameters corroborate the proposed mechanism.

Original language	English
Pages (from-to)	2529-2545
Number of pages	17
Journal	Cellulose
Volume	20
Issue number	5
DOIs	https://doi.org/10.1007/s10570-013-0021-5
State	Published - Oct 2013
Externally published	Yes

Bibliographical note

Funding Information:
Acknowledgments S. A. Umoren acknowledges the Academy of Sciences for the Developing World (TWAS) for the TWAS-UNESCO Associateship appointment at INIFTA, CONICET Argentina and the Vice Chancellor, University of Uyo, Nigeria for granting Special Leave to visit INIFTA, Argentina, C.A. Gervasi gratefully acknowledges the Comisión de Investigaciones Científicas y Técnicas Buenos Aires (CICBA) for his position as a member of the Carrera del Investigador Científico. This work was partially financed with a grant from Agencia Nacional de Promoción Científica y Tecnológica (PICT N° 2008-1902), and M.V.Mirífico gratefully acknowledges the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET-CCT LP) (PIP 0847), Universidad Nacional de La Plata (UNLP), and Facultad de Ingeniería UNLP, Área Departamental de Ingeniería Química (11-I133).

Keywords

Acid corrosion
Chitosan
Corrosion inhibition
Mild steel
Natural polymer

ASJC Scopus subject areas

Polymers and Plastics

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10.1007/s10570-013-0021-5

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title = "Inhibition of mild steel corrosion in HCl solution using chitosan",

abstract = "The efficiency of chitosan (a naturally occurring polymer) as a corrosion inhibitor for mild steel in 0.1 M HCl was investigated by gravimetric, potentiodynamic polarization, electrochemical impedance spectroscopy measurements, scanning electron microscopy, and UV-visible analysis. The polymer was found to inhibit corrosion even at a very low concentration. Inhibition efficiency increases with a rise in temperature up to 96 \% at 60 °C and then drops to 93 \% at 70 °C, while it slightly increases with an increase in chitosan concentration. Polarization curves indicate that chitosan functions as a mixed inhibitor, affecting both cathodic and anodic partial reactions. Impedance results indicate that chitosan was adsorbed on the metal/solution interface. Adsorption of chitosan at the mild steel surface is found to be in agreement with Langmuir adsorption isotherm model. Chemical adsorption is the proposed mechanism for corrosion inhibition considering the trend of protection efficiency with temperature. Calculated kinetic and thermodynamic parameters corroborate the proposed mechanism.",

keywords = "Acid corrosion, Chitosan, Corrosion inhibition, Mild steel, Natural polymer",

author = "Umoren, \{Saviour A.\} and Banera, \{Mauro J.\} and Teodoro Alonso-Garcia and Gervasi, \{Claudio A.\} and Mir{\'i}fico, \{Maria V.\}",

note = "Funding Information: Acknowledgments S. A. Umoren acknowledges the Academy of Sciences for the Developing World (TWAS) for the TWAS-UNESCO Associateship appointment at INIFTA, CONICET Argentina and the Vice Chancellor, University of Uyo, Nigeria for granting Special Leave to visit INIFTA, Argentina, C.A. Gervasi gratefully acknowledges the Comisi{\'o}n de Investigaciones Cient{\'i}ficas y T{\'e}cnicas Buenos Aires (CICBA) for his position as a member of the Carrera del Investigador Cient{\'i}fico. This work was partially financed with a grant from Agencia Nacional de Promoci{\'o}n Cient{\'i}fica y Tecnol{\'o}gica (PICT N° 2008-1902), and M.V.Mir{\'i}fico gratefully acknowledges the Consejo Nacional de Investigaciones Cient{\'i}ficas y T{\'e}cnicas (CONICET-CCT LP) (PIP 0847), Universidad Nacional de La Plata (UNLP), and Facultad de Ingenier{\'i}a UNLP, {\'A}rea Departamental de Ingenier{\'i}a Qu{\'i}mica (11-I133).",

year = "2013",

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doi = "10.1007/s10570-013-0021-5",

language = "English",

volume = "20",

pages = "2529--2545",

journal = "Cellulose",

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AU - Banera, Mauro J.

AU - Alonso-Garcia, Teodoro

AU - Gervasi, Claudio A.

AU - Mirífico, Maria V.

N1 - Funding Information: Acknowledgments S. A. Umoren acknowledges the Academy of Sciences for the Developing World (TWAS) for the TWAS-UNESCO Associateship appointment at INIFTA, CONICET Argentina and the Vice Chancellor, University of Uyo, Nigeria for granting Special Leave to visit INIFTA, Argentina, C.A. Gervasi gratefully acknowledges the Comisión de Investigaciones Científicas y Técnicas Buenos Aires (CICBA) for his position as a member of the Carrera del Investigador Científico. This work was partially financed with a grant from Agencia Nacional de Promoción Científica y Tecnológica (PICT N° 2008-1902), and M.V.Mirífico gratefully acknowledges the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET-CCT LP) (PIP 0847), Universidad Nacional de La Plata (UNLP), and Facultad de Ingeniería UNLP, Área Departamental de Ingeniería Química (11-I133).

PY - 2013/10

Y1 - 2013/10

N2 - The efficiency of chitosan (a naturally occurring polymer) as a corrosion inhibitor for mild steel in 0.1 M HCl was investigated by gravimetric, potentiodynamic polarization, electrochemical impedance spectroscopy measurements, scanning electron microscopy, and UV-visible analysis. The polymer was found to inhibit corrosion even at a very low concentration. Inhibition efficiency increases with a rise in temperature up to 96 % at 60 °C and then drops to 93 % at 70 °C, while it slightly increases with an increase in chitosan concentration. Polarization curves indicate that chitosan functions as a mixed inhibitor, affecting both cathodic and anodic partial reactions. Impedance results indicate that chitosan was adsorbed on the metal/solution interface. Adsorption of chitosan at the mild steel surface is found to be in agreement with Langmuir adsorption isotherm model. Chemical adsorption is the proposed mechanism for corrosion inhibition considering the trend of protection efficiency with temperature. Calculated kinetic and thermodynamic parameters corroborate the proposed mechanism.

AB - The efficiency of chitosan (a naturally occurring polymer) as a corrosion inhibitor for mild steel in 0.1 M HCl was investigated by gravimetric, potentiodynamic polarization, electrochemical impedance spectroscopy measurements, scanning electron microscopy, and UV-visible analysis. The polymer was found to inhibit corrosion even at a very low concentration. Inhibition efficiency increases with a rise in temperature up to 96 % at 60 °C and then drops to 93 % at 70 °C, while it slightly increases with an increase in chitosan concentration. Polarization curves indicate that chitosan functions as a mixed inhibitor, affecting both cathodic and anodic partial reactions. Impedance results indicate that chitosan was adsorbed on the metal/solution interface. Adsorption of chitosan at the mild steel surface is found to be in agreement with Langmuir adsorption isotherm model. Chemical adsorption is the proposed mechanism for corrosion inhibition considering the trend of protection efficiency with temperature. Calculated kinetic and thermodynamic parameters corroborate the proposed mechanism.

KW - Acid corrosion

KW - Chitosan

KW - Corrosion inhibition

KW - Mild steel

KW - Natural polymer

UR - https://www.scopus.com/pages/publications/84884412706

U2 - 10.1007/s10570-013-0021-5

DO - 10.1007/s10570-013-0021-5

M3 - Article

AN - SCOPUS:84884412706

SN - 0969-0239

VL - 20

SP - 2529

EP - 2545

JO - Cellulose

JF - Cellulose

IS - 5

ER -

Inhibition of mild steel corrosion in HCl solution using chitosan

Abstract

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Keywords

ASJC Scopus subject areas

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