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Using One Of Organic Extracts As A Corrosion Inhibitor For Carbon Steel In Acidic Environment

Author

Listed:
  • A. Ngatin

    (Department of Chemical Engineering, Politeknik Negeri Bandung, Bandung, Indonesia)

  • R.P. Sihombing

    (Department of Chemical Engineering, Politeknik Negeri Bandung, Bandung, Indonesia)

Abstract

Utilization of mangosteen rind extract as carbon steel inhibitors in the environment of hydrochloric acid (HCl) 0.1M, 0.5M, and 1.0M. Extracts were carried out by extraction using ethanol solvent at a temperature of 600C with a time of 80 minutes. The variation of extract concentration (100 ppm to 1000 ppm in 3 days and the effect of time of corroding the carbon steel with the addition of 1000 ppm extract. Corrosion rate is calculated based on the difference in weight and corrosion products shown by microscope optics. The objective was investigated corrosion inhibition efficiency that could be prevented by mangosteen peel extract as inhibitor. The results showed inhibitory properties of mangosteen peel extract for three (3) days increased with increasing extract concentrations up to 76.53% in 0.1M HCl solution and 28.83% in 1.0M HCl solutions. For the addition of 1000 ppm mangosteen peel extract showed inhibitor efficiency reached about 90% at 3 days of corrosive time in HCl 0, 5 M, 87% in 1.0 M HCl solution, and 81% in 0.1 M HCl solution. The experiment showed that the process of diffusion of compounds in extracts on the surface of carbon steel and react with ferro ions (Fe2 +) to form chemical covalent coordination coordinate with a thickness of 76 µm was successfully done.

Suggested Citation

  • A. Ngatin & R.P. Sihombing, 2020. "Using One Of Organic Extracts As A Corrosion Inhibitor For Carbon Steel In Acidic Environment," Materials & Corrosion Engineering Management (MACEM), Zibeline International Publishing, vol. 1(1), pages 39-42, July.
    • Handle: RePEc:zib:zmacem:v:1:y:2020:i:2:p:39-42
    DOI: 10.26480/macem.02.2020.39.42
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