Computational and experimental studies on the corrosion inhibition performance of an aerial extract of Cnicus Benedictus weed on the acidic corrosion of mild steel

Thakur A., KAYA S., Abousalem A. S., Sharma S., Ganjoo R., Assad H., ...More

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, vol.161, pp.801-818, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 161
  • Publication Date: 2022
  • Doi Number: 10.1016/j.psep.2022.03.082
  • Journal Name: PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Greenfile, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.801-818
  • Keywords: Cnicus Benedictus, Mild steel, Corrosion, Sustainable inhibitor, Adsorption, EIS, SEM, FRUIT EXTRACT, CARBON-STEEL, DERIVATIVES, ALUMINUM, COATINGS, BEHAVIOR, SURFACE, ALLOYS, COPPER, GREEN
  • Sivas Cumhuriyet University Affiliated: Yes

Abstract

The corrosion inhibition investigation of aerial extract of Cnicus Benedictus, a weed referring to the Asteraceae family has been evaluated on the mild steel corrosion in 0.5 M HCl with the employment of the weight-loss method, potentiodynamic polarization measurements (PDP) and electrochemical impedance spectroscopy (EIS) techniques. This investigation demonstrated Cnicus Benedictus extract (CBE) as a green and sustainable mild steel corrosion inhibitor in 0.5 M HCl media exhibiting an inhibition efficacy of 92.45% at 1000 ppm. With the increased concentration of CBE, the value of i(corr )and corrosion rate (C-R) decreased significantly from 7.4114 to 0.97438, revealing the protective effect of CBE on mild steel. The deposition of a highly defensive coating on the mild steel surface was demonstrated by the contact angle measurements. Additionally, the increase in the K(ads )values indicated a stronger interaction between the inhibitor molecules and metal surface. Furthermore, density functional theory (DFT) and Monte Carlo simulations have been utilized to validate the significant inhibition characteristic attained by the experimental study and to suggest an adsorption mechanism.(C) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.