Chitosan polymer as a green corrosion inhibitor for copper in sulfide-containing synthetic seawater

Khadija El Mouaden; Brahim El Ibrahimi; Rachid Oukhrib; Lahcen Bazzi; Belkheir Hammouti; Omar Jbara; Ahmed Tara; Dheeraj Singh Chauhan; Mumtaz Ahmad Quraishi

doi:10.1016/j.ijbiomac.2018.07.182

Chitosan polymer as a green corrosion inhibitor for copper in sulfide-containing synthetic seawater

Int J Biol Macromol. 2018 Nov:119:1311-1323. doi: 10.1016/j.ijbiomac.2018.07.182. Epub 2018 Aug 1.

Authors

Khadija El Mouaden¹, Brahim El Ibrahimi², Rachid Oukhrib², Lahcen Bazzi², Belkheir Hammouti³, Omar Jbara⁴, Ahmed Tara⁴, Dheeraj Singh Chauhan⁵, Mumtaz Ahmad Quraishi⁶

Affiliations

¹ Team of Applied Chemistry-Physic, Faculty of Sciences, University of IBN ZOHR, B.P.8106 Cité Dakhla, Agadir, Morocco. Electronic address: khadija.elmouaden@gmail.com.
² Team of Applied Chemistry-Physic, Faculty of Sciences, University of IBN ZOHR, B.P.8106 Cité Dakhla, Agadir, Morocco.
³ Laboratory of Applied Chemistry & Environment, Faculty of Science, Mohammed Premier University, B.P. 4808, 60046 Oujda, Morocco.
⁴ Laboratory of Engineering and Materials Science, University Reims, France.
⁵ Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
⁶ Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India. Electronic address: maquraishi.apc@itbhu.ac.in.

PMID: 30075214
DOI: 10.1016/j.ijbiomac.2018.07.182

Abstract

The influence of chitosan on the copper corrosion in sulfide polluted synthetic seawater (SSW) containing 20 ppm of sulfide has been investigated for the first time. Potentiodynamic polarization measurements, electrochemical impedance spectroscopy at the open circuit potential and weight loss measurements were employed to assess the corrosion inhibition ability of chitosan. The impedance studies revealed that in the presence of chitosan at various concentrations, the charge transfer resistance increases. At a concentration of 800 ppm, chitosan exhibited a corrosion inhibition efficiency of 89% following physical adsorption. The influence of temperature and immersion time was studied in sulfide-contaminated synthetic seawater and significant inhibition was observed even after 90 days. SEM-EDS studies confirm the absence of the deterioration products on copper surface.

Keywords: Chitosan; Copper corrosion; Synthetic seawater.

MeSH terms

Chitosan / chemistry*
Copper / chemistry*
Corrosion
Seawater / chemistry*
Sulfides / chemistry*
Surface Properties
Temperature

Substances

Sulfides
Copper
Chitosan