Application of seeds from psidium guajava as organic inhibitor

Atria Pradityana*, Subowo, Hari Subiyanto, Eddy Widiyono, W. Gathot Dwi

*Corresponding author for this work

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

1 Citation (Scopus)


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 best concentration when achieving the highest inhibitor efficiency is when adding 5 ml. For polarization method, the corrosion rate when absence inhibitors show 75,018 mmpy and when presence inhibitor 2,8845 mmpy. Based on the calculation, the inhibition efficiency is 96.155%. This is also indicated by the results of weight loss measurement, the efficiency shown is 90.130%.

Original languageEnglish
Title of host publicationMechanical Engineering
Subtitle of host publicationAdvanced Materials Processing Technology
Editors Suwarno, Vivien Djanali, Fahmi Mubarok, Bambang Pramujati
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)9783035716870
Publication statusPublished - 2020
Event4th International Conference on Mechanical Engineering, ICOME 2019 - Yogyakarta, Indonesia
Duration: 28 Aug 201929 Aug 2019

Publication series

NameKey Engineering Materials
Volume867 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


Conference4th International Conference on Mechanical Engineering, ICOME 2019


  • API 5L grade B
  • Inhibitors
  • Potentiodynamic Polarization
  • Psidium Guajava


Dive into the research topics of 'Application of seeds from psidium guajava as organic inhibitor'. Together they form a unique fingerprint.

Cite this