Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells

M. A. Deyab; Khadija Eddahaoui; Rachid Essehli; Tarik Rhadfi; Said Benmokhtar; Giuseppe Mele

doi:10.1016/j.desal.2016.01.019

Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells

M. A. Deyab, Khadija Eddahaoui, Rachid Essehli, Tarik Rhadfi, Said Benmokhtar, Giuseppe Mele

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

83 Scopus citations

Abstract

Corrosion inhibition potentials of three phosphites namely, M(HPO₃) (where M=Mn, Co and Cu), for carbon steel in saline water from oil source wells were evaluated using weight loss and electrochemical impedance spectroscopy (EIS) methods. Characterization of the surface morphology was performed by SEM/EDX investigations. The corrosion rate of carbon steel in saline water decreased with increasing M(HPO₃) concentration and increased with increasing temperature. M(HPO₃) inhibits the corrosion of carbon steel by an adsorption mechanism, which follows Langmuir isotherm adsorption. The order of the inhibition efficiency of inhibitors is as follows: Mn(HPO₃)<Co(HPO₃)<Cu(HPO₃). The thermodynamic functions of dissolution and adsorption processes were calculated and discussed.

Original language	English
Pages (from-to)	38-45
Number of pages	8
Journal	Desalination
Volume	383
DOIs	https://doi.org/10.1016/j.desal.2016.01.019
State	Published - Apr 1 2016
Externally published	Yes

Keywords

Carbon steel
Corrosion inhibitors
Phosphite
Saline water

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10.1016/j.desal.2016.01.019

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title = "Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells",

abstract = "Corrosion inhibition potentials of three phosphites namely, M(HPO3) (where M=Mn, Co and Cu), for carbon steel in saline water from oil source wells were evaluated using weight loss and electrochemical impedance spectroscopy (EIS) methods. Characterization of the surface morphology was performed by SEM/EDX investigations. The corrosion rate of carbon steel in saline water decreased with increasing M(HPO3) concentration and increased with increasing temperature. M(HPO3) inhibits the corrosion of carbon steel by an adsorption mechanism, which follows Langmuir isotherm adsorption. The order of the inhibition efficiency of inhibitors is as follows: Mn(HPO3)3)3). The thermodynamic functions of dissolution and adsorption processes were calculated and discussed.",

keywords = "Carbon steel, Corrosion inhibitors, Phosphite, Saline water",

author = "Deyab, {M. A.} and Khadija Eddahaoui and Rachid Essehli and Tarik Rhadfi and Said Benmokhtar and Giuseppe Mele",

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TY - JOUR

T1 - Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells

AU - Deyab, M. A.

AU - Eddahaoui, Khadija

AU - Essehli, Rachid

AU - Rhadfi, Tarik

AU - Benmokhtar, Said

AU - Mele, Giuseppe

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Corrosion inhibition potentials of three phosphites namely, M(HPO3) (where M=Mn, Co and Cu), for carbon steel in saline water from oil source wells were evaluated using weight loss and electrochemical impedance spectroscopy (EIS) methods. Characterization of the surface morphology was performed by SEM/EDX investigations. The corrosion rate of carbon steel in saline water decreased with increasing M(HPO3) concentration and increased with increasing temperature. M(HPO3) inhibits the corrosion of carbon steel by an adsorption mechanism, which follows Langmuir isotherm adsorption. The order of the inhibition efficiency of inhibitors is as follows: Mn(HPO3)3)3). The thermodynamic functions of dissolution and adsorption processes were calculated and discussed.

AB - Corrosion inhibition potentials of three phosphites namely, M(HPO3) (where M=Mn, Co and Cu), for carbon steel in saline water from oil source wells were evaluated using weight loss and electrochemical impedance spectroscopy (EIS) methods. Characterization of the surface morphology was performed by SEM/EDX investigations. The corrosion rate of carbon steel in saline water decreased with increasing M(HPO3) concentration and increased with increasing temperature. M(HPO3) inhibits the corrosion of carbon steel by an adsorption mechanism, which follows Langmuir isotherm adsorption. The order of the inhibition efficiency of inhibitors is as follows: Mn(HPO3)3)3). The thermodynamic functions of dissolution and adsorption processes were calculated and discussed.

KW - Carbon steel

KW - Corrosion inhibitors

KW - Phosphite

KW - Saline water

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U2 - 10.1016/j.desal.2016.01.019

DO - 10.1016/j.desal.2016.01.019

M3 - Article

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SN - 0011-9164

VL - 383

SP - 38

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JO - Desalination

JF - Desalination

ER -

Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells

Abstract

Keywords

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