Thermodynamic, Adsorption and Corrosion Inhibition Studies of Mild Steel by  Artemisia vulgaris Extract from Methanol as Green Corrosion Inhibitor in Acid Medium

Karki, Nabin; Choudhary, Yogesh Kumar; Yadav, Amar Prasad

doi:10.3126/jncs.v39i0.27041

Cited by 15 publications

(14 citation statements)

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“…And these adsorbed water molecules are then replaced by inhibitor molecules. So, the adsorption of inhibitor molecules from an aqueous solution is a quasi-substitution process [6,25,26]. Langmuir adsorption isotherm equation, (equation 2) is applied to fi nd whether the adsorption process is monolayer or multilayer.…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…It indicates that the adsorption of -solanine molecule on the MS surface is physical adsorption. The value of ΔGº is negative that implies the adsorption of -solanine on the MS surface is spontaneous [6,26,29]. Freundlich adsorption isotherms (Figure See SF2) for these three inhibitors were checked.…”

Section: Fig 2: Langmuir Adsorption Isotherm Plot For Mild Steel In 1 M H 2 So 4 As a Reference Of The Molar Concentration Of α -Solaninementioning

confidence: 99%

“…An increase in activation energy reduces the reaction rate resulting in the suppression in corrosion rate. An increase in E a with the addition of inhibitor shows the strong adsorption of inhibitor molecules on the metal surface with complete or nearly complete coverage so that acid molecules have the least or almost no chance to react with metal [6,25,26].…”

Section: Fig 9: Transition State Plot For Mild Steel In 1m H 2 So 4 With and Without Inhibitor Stmentioning

confidence: 99%

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Adsorption Isotherm and Activation Energy of Inhibition of Alkaloids on Mild Steel Surface in Acidic Medium

et al. 2021

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Alkaloids as green inhibitors were extracted from three different plants Rhynchostylis retusa, Artimesia vulgaris,and Solanum tuberosum. Weight loss measurement in mild steel has been carried out in the presence and absence of green inhibitors individually in an acidic medium. Weight loss measurements at different temperatures are used to calculate thermodynamic parameters. The weight loss measurements at different concentrations are used to find adsorption isotherm and found that it obeys Langmuir adsorption isotherm with R2 values 1, 1, 0.996 for three inhibitors. Activation energy, enthalpy, and entropy of the three inhibitors have been calculated. It is found that the value of all these parameters increased in the addition of inhibitors. The free energy of the system is calculated and found (-17.46 kJ mol-1) indicating that the adsorption process is spontaneous and there is physical adsorption at the MS-Inhibitor interface.

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Section: Adsorption Isothermmentioning

confidence: 99%

Section: Fig 2: Langmuir Adsorption Isotherm Plot For Mild Steel In 1 M H 2 So 4 As a Reference Of The Molar Concentration Of α -Solaninementioning

confidence: 99%

Section: Fig 9: Transition State Plot For Mild Steel In 1m H 2 So 4 With and Without Inhibitor Stmentioning

confidence: 99%

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Adsorption Isotherm and Activation Energy of Inhibition of Alkaloids on Mild Steel Surface in Acidic Medium

et al. 2021

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“…It inspires the use of natural products as a corrosion inhibitor, which is ecofriendly and greener. Lantana camara [17], Euphorbia royleana [18], Artemesia vulgaris [19], Pogostemon benghalensis [20], Calotropis gigantean [21] have been studied as a green corrosion inhibitor, and they have shown inhibition efficiency above 90%. The leaves, stem, and oil of Jatropha curcas have shown productive corrosion inhibition efficiency against mild steel (MS) in the acidic medium [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Study of Jatropha Curcas Extract as a Corrosion Inhibitor in Acidic Medium on Mild Steel by Weight Loss and Potentiodynamic Methods

Gupta

Kafle

Das

et al. 2020

J. Nepal Chem. Soc.

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The corrosion inhibition properties of methanol extract of Jatropha curcas (JC) were investigated for mild steel (MS) in acidic medium using weight loss and potentiodynamic methods. Corrosion inhibition of MS in 1MH2SO4 was studied in the absence and presence of various concentrations of the methanolic extract of Jatropha curcas barks. The results showed an increase in corrosion inhibition with increasing concentration of the extract. The inhibition efficiency of 1000 ppm JC extract from the weight loss and potentiodynamic polarization methods were approximately 92.0% after 24 hours immersion in the acidic solution. Open circuit potential (OCP) and potentiodynamic polarization measurements showed that the JC extract acts as a mixed-type inhibitor.

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“…The extracts of many plants have been reported as excellent inhibitors for corrosion of steel in acidic solutions [9][10][11][12]. Many extracts of common plants have been found useful in this regard -plants such as Tithonia diversifolia [13], Jatropha curcas [14], Rice husk [15], Aquilaria crassna [16], Prunus cerasus [17], Moringa oleifera [18], Murraya koenigii [19] , Aloe vera [20,21] Artemesia vulgaris [22 ] and Pogostemo benghalensis [23,24 ] have been investigated and efforts are still going on to search for more green inhibitor alternatives [25,26]. Lantana camara (Verbenaceae) is a small perennial shrubs which can grow to around 2 m tall and form dense surroundings in a variety of environment which is highly variable ornamental shrub, native of the neotropics.…”

Section: Introductionmentioning

confidence: 99%

Bark Extract of Lantana camara in 1M HCl as Green Corrosion Inhibitor for Mild Steel

Shrestha¹,

Oli²,

Thapa³

et al. 2019

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Lantana camara, an invasive species that adversely affects habitant, bioregions and environment has been studied as corrosion inhibitor. Methanolic extract of barks of Lantana camara in 1 M hydrochloric acid was tested as corrosion inhibitor on mild steel using potentiodynamic polarization technique. The corrosion inhibition efficiency of extract varied with concentration of extract and immersion of time. The inhibition was found to increase with increase in concentration of the extract. The polarization behavior of mild steel revealed that maximum inhibition efficiency is 97.33 % and 89.93 % respectively in the 1000 and 200 ppm concentration of the inhibitor respectively. The results showed that the extract of the barks of Lantana camara served as a mixed type inhibitor.

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Thermodynamic, Adsorption and Corrosion Inhibition Studies of Mild Steel by Artemisia vulgaris Extract from Methanol as Green Corrosion Inhibitor in Acid Medium

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Cited by 15 publications

References 0 publications

Adsorption Isotherm and Activation Energy of Inhibition of Alkaloids on Mild Steel Surface in Acidic Medium

Adsorption Isotherm and Activation Energy of Inhibition of Alkaloids on Mild Steel Surface in Acidic Medium

Study of Jatropha Curcas Extract as a Corrosion Inhibitor in Acidic Medium on Mild Steel by Weight Loss and Potentiodynamic Methods

Bark Extract of Lantana camara in 1M HCl as Green Corrosion Inhibitor for Mild Steel

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