Synergistic Corrosion Inhibition Effect of Rice Husk Extract and KI for Mild Steel in H2SO4 Solution

Marta Pramudita  -  Department of Chemical Engineering, Universitas Indonesia, Indonesia
Sukirno Sukirno  -  Department of Chemical Engineering, Universitas Indonesia, Indonesia
*Mohammad Nasikin  -  Department of Chemical Engineering, Universitas Indonesia, Indonesia
Received: 25 Jan 2019; Revised: 17 Jun 2019; Accepted: 20 Jun 2019; Published: 1 Dec 2019; Available online: 30 Sep 2019.
Open Access Copyright (c) 2019 Bulletin of Chemical Reaction Engineering & Catalysis
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Section: The 3rd International Conference on Chemical and Material Engineering 2018 (ICCME 2018)
Language: EN
Statistics: 620 348

The corrosion inhibition of rice husk extract for bio-corrosion in mild steel in 1 M of H2SO4 solution and the effect of adding potassium iodide were investigated using the weight-loss method with a variable solution temperature and various bio-inhibitor concentrations. The addition of potassium iodide can significantly increase the efficiency of rice husk extract. The highest efficiency is 95.89% at 1,250 ppm of inhibitor concentration at a temperature of 313 K. The inhibition efficiency of rice husk extract is synergistically increased with the addition of potassium iodide. The characteristics of the adsorption inhibitors were assessed using the Langmuir isotherm adsorption approach at all studied concentrations and temperatures. The synergy of rice husk extract and potassium iodide was examined using thermodynamic and kinetic parameters. Copyright © 2019 BCREC Group. All rights reserved


Keywords: corrosion inhibitor; rice husk extract; synergistic; plant extract; mild steel

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