Rice Husk Extracts Ability to Reduce the Corrosion Rate of Mild Steel

Pramudita, Marta; Sukirno, Sukirno; Nasikin, Mohammad

doi:10.18178/ijcea.2018.9.4.715

Cited by 7 publications

(12 citation statements)

References 6 publications

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“…The inhibition efficiency obtained experimentally and theoretically showed the same value, which was 90.8% in the study of thiamide-pyrazolindol derivatives [17]. Inhibition efficiency or inhibition efficiency (EI) is the level of decrease in corrosion activity due to the inhibitor's performance in protecting metal [18]. The inhibition efficiency can be determined based on the corrosion current using the potentiodynamic polarization method.…”

Section: Extracts Of Natural Products As Green Corrosion Inhibitors O...mentioning

confidence: 71%

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

Akrom¹

2022

J. Teori Apl. Fis.

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Steel is a material that has low resistance to corrosion when interacting with a corrosive environment. The application of natural extracts as green inhibitors is able to provide good performance in inhibiting corrosion of steel with high inhibition efficiency. Natural extracts that are effective and efficient as corrosion inhibitors on steel are those which in their compound structure contain heteroatom groups (such as O, N, S, P) and aromatic rings. This work provides an important comparative overview for the development of green inhibitor natural extracts in steel. The results of theoretical studies based on quantum mechanics with the DFT method at the atomic level based on molecular orbitals, chemical quantum parameters, and adsorption characteristics show results that are in accordance with experimental studies. The frontier molecular orbital (FMO) plot shows the distribution of electron density in the HOMO-LUMO region as a predictor of the active site of the inhibitor molecule interacting with the steel surface. Quantum chemical parameters such as ionization potential (I), electron affinity (A), absolute electronegativity (χ), hardness (η), softness (σ), fraction of electrons transferred (ΔN), electrophilicity (ɷ), and electron backdonation (ΔEback-donation) was calculated to obtain a correlation between the electronic properties of the inhibitor molecule and the corrosion inhibition potential. The results of the calculation of the quantum chemical parameters show the reactivity of the inhibitor molecule which has a very good potential to interactand bind strongly to the steel surface. This has the potential to make the inhibitor molecule have a high inhibition efficiency. Chemical adsorption and/or physical adsorption by forming complex compounds between inhibitor molecules and the steel surface are corrosion inhibition mechanisms to protect steel from a corrosive environment.The development of future studies should be able to display the mechanism of interaction and inhibition of inhibitor molecules in more detail and systematically at the atomic level on several metal surfaces such as Fe, Al, Cu, and others.

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Section: Extracts Of Natural Products As Green Corrosion Inhibitors O...mentioning

confidence: 71%

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

Akrom¹

2022

J. Teori Apl. Fis.

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“…the highest inhibition efficiency was at 1 hour immersion time with a concentration of 1250 ppm. The longer the immersion time causes the passivation layer that is formed to start to break down so that the corrosion process takes place [14]. The shorter the contact time between the metal and the corrosive media and the inhibitor, the work of the inhibitor will be maximized because the value of the inhibition efficiency will increase.…”

Section: Effect Of Immersion Time and Inhibitor Concentration On Inhi...mentioning

confidence: 99%

“…The use of plant extracts as corrosion inhibitors has recently been growing because of their abundance, renewability, and easy production. Based on phytochemical research, plant extracts contain alkaloids, flavonoids, polyphenols, glycosides and saponins [14]. These compounds have many heteroatom compounds and polar functional groups, which can improve the performance of mild steel in a corrosive environment [15].…”

Section: Introductionmentioning

confidence: 99%

The effect of mild steel immersion time on synergistic corrosion inhibitor ability of terminalia catappa leaves extract

Rafik

Agustina

Pramudita

2022

tjst

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Inhibitors from natural materials are safe for the environment to replace chemical inhibitors in inhibiting corrosion. The tannin compounds contained in the Terminalia Catappa leaves extract have the ability to inhibit the corrosion rate. This study aims to determine the ability of Terminalia Catappa leaves extract and its synergism with KI in inhibiting the corrosion rate of mild steel metal. Mild steel that has been sanded and cleaned is then immersed in demineralized water. The immersion time was carried out in 3 variations which were 1, 3, and 5 hours. The weight-loss method is used to calculate the corrosion rate.The lowest corrosion rate was obtained at 0.0018 mmpy at immersion for an hour, and the concentration of inhibitor was 1250 ppm. The highest inhibition efficiency was obtained at 90% in immersion for an hour with a 1250 ppm inhibitor concentration.

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“…The weight-loss method was used to obtain the degree of surface coverage (θ). The Langmuir adsorption isotherm equation [16] is as follows: (5) where C is the concentration of the inhibitor (ppm), θ is the surface coverage and Kads is the adsorption equilibrium constant. The Langmuir isotherm assumes that a solid surface has a fixed number of adsorption sites and that each site has one adsorbed species.…”

Section: Concentration Ppmmentioning

confidence: 99%

“…It has a high silica content, which is a good advantage, especially for bio-corrosion inhibitors [3]. Rice husk extract (RHE) has the potential to be developed into a bio-corrosion inhibitor [4,5] and contains amorphous silica, which is safe and environmentally friendly.Recently, researchers have been paying more attention to mixed inhibitors because of their synergistic effects. The effect of the inhibitor mixture is better than the single inhibitor effect.…”

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confidence: 99%

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

Pramudita

Sukirno

Nasikin

2019

Bull. Chem. React. Eng. Catal.

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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.because it has the advantage of being biodegradable and does not contain heavy metals or other toxic compounds.Rice husk is considered one of the most important agricultural wastes, and a great amount of research has been conducted on its use in various fields. It has a high silica content, which is a good advantage, especially for bio-corrosion inhibitors [3]. Rice husk extract (RHE) has the potential to be developed into a bio-corrosion inhibitor [4,5] and contains amorphous silica, which is safe and environmentally friendly.Recently, researchers have been paying more attention to mixed inhibitors because of their synergistic effects. The effect of the inhibitor mixture is better than the single inhibitor effect. Further, several authors have reported that halide (Iˉ) ions, which are known to stimulate and inhibit corrosion in acid solutions, can provide their own effective protection or can be com-

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Rice Husk Extracts Ability to Reduce the Corrosion Rate of Mild Steel

Cited by 7 publications

References 6 publications

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

The effect of mild steel immersion time on synergistic corrosion inhibitor ability of terminalia catappa leaves extract

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

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