Alternative corrosion inhibitor formulation for carbon steel in CO2-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines

Ime Bassey Obot; Ikenna B. Onyeachu; Saviour A. Umoren

doi:10.1016/j.corsci.2019.108140

Alternative corrosion inhibitor formulation for carbon steel in CO₂-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines

Ime Bassey Obot^*
, Ikenna B. Onyeachu
, Saviour A. Umoren

^*Corresponding author for this work

Interdisciplinary Research Center for Advanced Materials

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

97 Scopus citations

Abstract

A benzimidazole derivative (BPMB) was tested as inhibitor for carbon steel in CO₂-saturated brine, singly (under static and turbulent conditions) and formulated with mercaptoalcohol (ME) (under turbulence). Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), ATR-IR, SEM, XRD and AFM were employed for the study. Turbulence at short immersion time (1 h) decreased BPMB corrosion inhibition efficiency. However, prolonged immersion time (12 h) and the addition of mercaptoethanol improved its performance to 99.0%. Theoretical calculations indicate that BPMB and ME can interact strongly with the steel surface using the benzimidazole and -SH group, respectively. The ME addition enhances denser film formation on the steel surface.

Original language	English
Article number	108140
Journal	Corrosion Science
Volume	159
DOIs	https://doi.org/10.1016/j.corsci.2019.108140
State	Published - Oct 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

API X60 steel
Benzimidazole
EIS
RCE
Sweet corrosion
Synergism

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

Access to Document

10.1016/j.corsci.2019.108140

Cite this

@article{24d0e2b8582647eebaa83dcfaf922028,

title = "Alternative corrosion inhibitor formulation for carbon steel in CO2-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines",

abstract = "A benzimidazole derivative (BPMB) was tested as inhibitor for carbon steel in CO2-saturated brine, singly (under static and turbulent conditions) and formulated with mercaptoalcohol (ME) (under turbulence). Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), ATR-IR, SEM, XRD and AFM were employed for the study. Turbulence at short immersion time (1 h) decreased BPMB corrosion inhibition efficiency. However, prolonged immersion time (12 h) and the addition of mercaptoethanol improved its performance to 99.0\%. Theoretical calculations indicate that BPMB and ME can interact strongly with the steel surface using the benzimidazole and -SH group, respectively. The ME addition enhances denser film formation on the steel surface.",

keywords = "API X60 steel, Benzimidazole, EIS, RCE, Sweet corrosion, Synergism",

author = "Obot, \{Ime Bassey\} and Onyeachu, \{Ikenna B.\} and Umoren, \{Saviour A.\}",

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doi = "10.1016/j.corsci.2019.108140",

language = "English",

volume = "159",

journal = "Corrosion Science",

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T1 - Alternative corrosion inhibitor formulation for carbon steel in CO2-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines

AU - Obot, Ime Bassey

AU - Onyeachu, Ikenna B.

AU - Umoren, Saviour A.

PY - 2019/10

Y1 - 2019/10

N2 - A benzimidazole derivative (BPMB) was tested as inhibitor for carbon steel in CO2-saturated brine, singly (under static and turbulent conditions) and formulated with mercaptoalcohol (ME) (under turbulence). Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), ATR-IR, SEM, XRD and AFM were employed for the study. Turbulence at short immersion time (1 h) decreased BPMB corrosion inhibition efficiency. However, prolonged immersion time (12 h) and the addition of mercaptoethanol improved its performance to 99.0%. Theoretical calculations indicate that BPMB and ME can interact strongly with the steel surface using the benzimidazole and -SH group, respectively. The ME addition enhances denser film formation on the steel surface.

AB - A benzimidazole derivative (BPMB) was tested as inhibitor for carbon steel in CO2-saturated brine, singly (under static and turbulent conditions) and formulated with mercaptoalcohol (ME) (under turbulence). Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), ATR-IR, SEM, XRD and AFM were employed for the study. Turbulence at short immersion time (1 h) decreased BPMB corrosion inhibition efficiency. However, prolonged immersion time (12 h) and the addition of mercaptoethanol improved its performance to 99.0%. Theoretical calculations indicate that BPMB and ME can interact strongly with the steel surface using the benzimidazole and -SH group, respectively. The ME addition enhances denser film formation on the steel surface.

KW - API X60 steel

KW - Benzimidazole

KW - EIS

KW - RCE

KW - Sweet corrosion

KW - Synergism

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