Journal of Urban Environmental Management

Eucalyptus leaf essential oil as Green inhibitor of steel corrosion

Authors

Mohammad Ghasemi 1
Hanie Abbaslou 2
Bahador Abolpour 3

1 MSc. Student, Department of Civil Engineering, Sirjan University of Technology

2 Department of Civil Engineering, Sirjan University of Technology

3 Department of Chemical Engineering, Sirjan University of Technology

https://doi.org/10.48306/jumee.2023.424688.1023
Abstract
Corrosion inhibitor is an suitable and economical method to control the corrosion of metals in acidic environments. In this regard, green corrosion inhibitors based on plant essential oils have received a lot of attention as a usable alternative to common synthetic corrosion inhibitors, which are mostly not environmentally friendly. The presence of active compounds in eucalyptus essential oil has made it a source of green inhibitors in steel corrosion control. In this study, the inhibitory performance of eucalyptus essential oil has been investigated by extracting essential oils using steam method, electrochemical tests and surface analysis methods. Therefore, eucalyptus leaf essential oil has been used as a green inhibitor in the corrosive environment of sulfuric acid and hydrochloric acid to check the reduction of metal corrosion in this environment GC-Mass device was used to investigate the compounds present in the eucalyptus plant. The effect of steel corrosion inhibition by essential oils was investigated using weight measurement methods, electrochemical impedance spectroscopy and absorption isotherms and the results of metal immersed in acid solution with different concentrations were compared in the absence of inhibitor. The results of the tests showed that this substance has a good performance as an inhibitor and the percentage of inhibition on steel corrosion will increase with increasing concentration. The absorption of eucalyptus essential oil on steel follows the absorption isotherm and the amount of free energy of absorption indicates the spontaneous absorption of this substance with the predominance of chemical absorption on the surface.

Keywords

Eucalyptus Essential Oil
Essential Oil Extraction Method
Corrosion
Steel
Electrochemical Impedance Spectroscopy
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  • Receive Date 10 November 2023
  • Revise Date 09 December 2023
  • Accept Date 16 December 2023
  • First Publish Date 22 December 2023
  • Publish Date 22 December 2023

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