Langmuir adsorption isotherm analysis on the addition of Myrmecodia Pendans extract as a corrosion inhibitor with a variety of corrosive media

Atria Pradityana*, Sulistijono, Subowo, Suhariyanto, Hari Subiyanto, Liza Rusdiyana

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

In this study, the corrosion process was done by potentiodynamic polarization method on API 5L Grade B. Variations corrosion media used were NaCl 3,5%, HCl 1 M and H2SO4 1 M. Organic Inhibitors used are plant Myrmecodia Pendans, while the concentration of the extract used were 100-500 mg / L (multiples of 100 mg / L). In this study, the mechanism of adsorption equation model used is Langmuir. This study aims to determine appropriate corrosive media followed the Langmuir adsorption isotherm when added to extracts of Myrmecodia Pendans as a corrosion inhibitor. The value of free energy of the system have obtained from the adsorption isotherm models. With the known value of free energy, it can be seen whether the adsorption occurs in physics or chemistry. This relates to the surface protective layer formed on the surface adsorption extract. The results showed that the corrosion in 3.5% NaCl solution that follows the Langmuir method.

Original languageEnglish
Title of host publicationInternational Seminar on Fundamental and Application of Chemical Engineering 2016, ISFAChE 2016
Subtitle of host publicationProceedings of the 3rd International Seminar on Fundamental and Application of Chemical Engineering 2016
Editors Widiyastuti, Fadlilatul Taufany, Siti Nurkhamidah
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415102
DOIs
Publication statusPublished - 24 May 2017
Event3rd International Seminar on Fundamental and Application of Chemical Engineering 2016, ISFAChE 2016 - East Java, Indonesia
Duration: 1 Nov 20162 Nov 2016

Publication series

NameAIP Conference Proceedings
Volume1840
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Seminar on Fundamental and Application of Chemical Engineering 2016, ISFAChE 2016
Country/TerritoryIndonesia
CityEast Java
Period1/11/162/11/16

Keywords

  • Corrosion media
  • Langmuir
  • Myrmecodia Pendans
  • adsorption
  • inhibitor

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