The use of morinda citrifolia as a green corrosion inhibitor for low carbon steel in 3.5% NaCl solution

Rahayu Kusumastuti, Rakhmad Indra Pramana, Johny W. Soedarsono

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

18 Citations (Scopus)

Abstract

The effect and mechanism of green corrosion inhibitor of Morinda Citrifolia (Noni) toward low carbon steel material has been researched. The general background is to develop the cheap and eco-friendly corrosion inhibitor based on components taken from tropical plants that grow +in Indonesia. This research aims to determine the effectiveness of the use of the extracts of noni as green corrosion inhibitor of carbon steel material in aggressive environment. The medium applied for this experiment is 3.5% natrium chloride solution. The variation of the concentration and immersion time duration has been applied as the experimental parameters. All the work was done at room temperature. The corrosion rate was measured by electrochemical polarization method with CMS 600-Gamry instruments and weight loss. The adsorption of inhibitor into the metal surface, which induced bonding formation after immersion was observed by using FTIR method. Inhibition mechanism was observed by polarization curves and fitted by the Langmuir adsorption models. The experimental results show that the higher concentration of inhibitor increasing the inhibition effect. The optimum inhibition is obtained at 3 ppm noni fruit extract, after immersion for about 288 hours. The corrosion rates obtained was 1.385 mpy, with the inhibitor efficiency of 76.92%. The monolayer film is formed coating the surface material as a result of mixed type corrosion inhibitor behavior of Noni. It can be concluded that this green inhibitor is effective to be used for low carbon steel material.

Original languageEnglish
Title of host publicationInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017
EditorsIs Fatimah, Gani Purwiandono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414914
DOIs
Publication statusPublished - 17 Mar 2017
EventInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017 - Yogyakarta, Indonesia
Duration: 15 Nov 201616 Nov 2016

Publication series

NameAIP Conference Proceedings
Volume1823
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017
Country/TerritoryIndonesia
CityYogyakarta
Period15/11/1616/11/16

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