Synergistic Corrosion Inhibition Effect of Rice Husk Extract and KI For Mild Steel In H2SO4 Solution

Marta Pramudita Marta Pramudita -  Department of Chemical Engineering, Universitas Indonesia , Jl. Fuad Hasan, Kampus UI Depok, 16424, Indonesia
Sukirno Sukirno -  Department of Chemical Engineering, Universitas Indonesia , Jl. Fuad Hasan, Kampus UI Depok, 16424, Indonesia
*Mohammad Nasikin -  Department of Chemical Engineering, Universitas Indonesia , Jl. Fuad Hasan, Kampus UI Depok, 16424, Indonesia
Received: 25 Jan 2019; Revised: 17 Jun 2019; Accepted: 20 Jun 2019; Published: 1 Dec 2019; Available online: 1 Jul 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
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Abstract
Corrosion inhibition effect of rice husk extract as bio corrosion for mild steel in 1M H2SO4 solution and the impact of the addition of potassium iodide were investigated by using weight loss method with the variable of solution temperature and bio inhibitor concentration. It was found that the addition of potassium iodide can significantly increase the efficiency value of rice husk extract. The highest efficiency is 95.89% at 1250 ppm inhibitor concentration and 313K temperature. The inhibition efficiency of rice husk extract synergistically increased addition of potassium iodide. The characteristic of adsorption inhibitors was approached by Langmuir isotherm adsorption at all concentrations and temperatures studied. The synergistic of rice husk extract and potassium iodide were examined by thermodynamic and kinetic parameters.
Keywords
corrosion inhibitor; rice husk extract; synergistic; plant extract; mild steel

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