Application of Seeds from Psidium Guajava as Organic Inhibitor

Abstract:

Corrosion is the process of natural changes in the nature of a material due to the influence or reaction with the surrounding environment. One way to control it is by adding inhibitors. In this study, seeds from guava (Psidium Guajava) were used as organic inhibitors. The test material used is API 5L grade B steel. For corrosive media, a solution of 1 M H₂SO₄ is used. In experiments used variations in the concentration of extracts 0, 2, 3, 4, 5 and 6 ml. The results of the experiments showed a decrease in the corrosion rate of API 5L grade B when there were additional inhibitors. This is supported by the experimental results of Potentiodynamic Polarization. The rate of corrosion without the presence of an inhibitor shows 75,018 mmpy whereas in the presence of 2,8845 mmpy inhibitors. Based on the calculation, the inhibition efficiency is 96.155%. This is also indicated by the results of the testing of weight loss that has been done. The efficiency shown is 90.130%.

• Periodical: Key Engineering Materials (Volume 867)
• Pages: 103-108
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.867.103
• Online since: October 2020
• Authors: Atria Pradityana*, Subowo Subowo, Hari Subiyanto, Eddy Widiyono, Dwi Winarto Gathot
• Keywords: API 5L Grade B, Inhibitors, Potentiodynamic Polarization, Psidium Guajava

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