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 journalArticle

30 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)38-45
Number of pages8
JournalDesalination
Volume383
DOIs
Publication statusPublished - 1 Apr 2016

Fingerprint

Phosphites
Saline water
Corrosion inhibitors
Carbon steel
corrosion
Oils
steel
adsorption
well
oil
carbon
Corrosion
Adsorption
Corrosion rate
Electrochemical impedance spectroscopy
Adsorption isotherms
water
Surface morphology
Energy dispersive spectroscopy
inhibitor

Keywords

  • Carbon steel
  • Corrosion inhibitors
  • Phosphite
  • Saline water

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Experimental evaluation of new inorganic phosphites as corrosion inhibitors for carbon steel in saline water from oil source wells. / Deyab, M. A.; Eddahaoui, Khadija; Essehli, Rachid; Rhadfi, Tarik; Benmokhtar, Said; Mele, Giuseppe.

In: Desalination, Vol. 383, 01.04.2016, p. 38-45.

Research output: Contribution to journalArticle

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