Corrosion Inhibition of Mild Steel in a H2SO4 Solution by Piper Guineense Squeezed Extract

Anuchi, S O; Ngobiri, N. C.

doi:10.4152/pea.201804285

Cited by 11 publications

(8 citation statements)

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“…For evaluation of corrosion inhibition efficiencies of the extracts, methods such as weight loss methods [21,22,28,31,33,35,41,42,90] have been employed.…”

Section: Methodsmentioning

confidence: 99%

“…The corrosion of various metals such as mild steel [2,21,22,25,26,27,28,31,32,35,36,40,41,42,47,53,90,92], stainless steel [24,28,29,81], aluminium [3,38,44,87], copper [33,59], zinc [37], steel-copper [33], pipeline steel API 5L X52 [34], AM60 magnesium alloy [100] has been controlled by the extracts of leaves.…”

Section: Metalsmentioning

confidence: 99%

“…The inhibition efficiencies of metals in various media such as acidic [2,3,21,22,26,27,29,31,32,34,35,36,37,38,39,42,44,47,53,81,87,90,92], basic [88], neutral [25,40,41,59,100] and sea water [103] have been investigated.…”

Section: Mediamentioning

confidence: 99%

“…Leaves such as Urtica dioica leaves extract [2], almond (Prunus amygdalus) fruit leaves [3], Xanthium strumarium leaves [21], Piper guineense (uziza leaf) [22], Olive leaves [24], Glycyrrhiza glabra [26], extract of ginkgo biloba [28], extract of Prunus persica (P. persica) [29], Murraya koenigii (curry) leaves [32], Ziziyphus leaves [33], Aloe vera L. [35,81], Gongronema latifolium [36], Areca palm leaves [38], Chaenomeles sinensis (C. sinensis) leaves [39], Ficus carica (Fig tree) leaves [40], Mangrove (Rhizophora apiculata) bark and leaf [42], Urtica Dioica leaves [43], Murraya koenigii leaves [44], Bauhinia tomentosa leaves extract [47], Schreabera swietenioids leaves [53], camellia sinensis [87], leaves of Pistacia lentiscus from Saidia Morocco [90], leaves of Hibiscus sabdariffa [92], have been used as corrosion inhibitors.…”

Section: Leavesmentioning

confidence: 99%

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Green solution to corrosion problems – at a glance

2019

Int. J. Corros. Scale Inhib.

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Extracts of natural products are used as corrosion inhibitors since they are non toxic and environmentally friendly. Especially the extracts of leaves have attracted the attention of many researchers. Usually weight loss methods are adopted to measure the corrosion inhibition efficiencies. The mechanistic aspects have been investigated by electrochemical studies such as polarization study and AC impedance spectra. Sometimes noise measurement has also been used. The protective films formed on the metal surface have been analysed by surface analysis techniques such as SEM, EDAX, FTIR and AFM. Experiments have been carried out at various temperatures also. Various adsorption isotherms have been proposed. Of all the metals and alloys used, mild steel has been extensively used. The experiments have been carried out in acid medium and neutral medium (sodium chloride). The extracts of the leaves contain many ingredients which have polar groups such as N, O, S and P atoms. The lone pair of electrons present on these atoms are pumped on to the metal surface. This controls the corrosion process.

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“…For evaluation of corrosion inhibition efficiencies of the extracts, methods such as weight loss methods [21,22,28,31,33,35,41,42,90] have been employed.…”

Section: Methodsmentioning

confidence: 99%

Section: Metalsmentioning

confidence: 99%

Section: Mediamentioning

confidence: 99%

Section: Leavesmentioning

confidence: 99%

See 2 more Smart Citations

Green solution to corrosion problems – at a glance

2019

Int. J. Corros. Scale Inhib.

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“…Coupons weighed before and after the immersion in 0.5N HCl with and without inhibitor.The difference between the weight of coupon after immersion time and initial weight of the coupon was considered as the mass loss. Using the parameter of mass loss we calculated the rate of corrosion.The rate of corrosion, percentage inhibition efficiency (IE, %) and degree of surface coverage (θ) were calculated from the following 1-3 equations [19][20][21] .…”

Section: Weight Loss Experimentsmentioning

confidence: 99%

4-Ethylcyclohexanonethiosemicarbazone as Corrosion Inhibitor for Iron Metal in 0.5N Hydrochloric Acid Solutions

Meena¹,

Choudhary²,

Varshney³

et al. 2018

IJCTR

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:The corrosion inhibition of iron (Fe) metal in acidic medium (0.5N HCl) in the presence of synthesized4-ethylcyclohexanonethiosemicarbazone (ECHTSC) has been investigated by the weight loss method. The protective layer of thiosemicarbazone on Fe surface was confirmed by scanning electron microscopy (SEM). Inhibition efficiency, corrosion rate and surface coverage were evaluated at different concentrations of thiosemicarbazone in 0.5N HCl. The adsorption equilibrium constant (K ads ) and standard free energy of adsorption (ΔG ads ) were calculated. The values of free energy of adsorption (ΔG ads ) revealed that the inhibitor was adsorbed on the Fe surface via both physical and chemical adsorption nmechanisms.

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Novel use of kitchen waste: protection of boiler quality steel from corrosion in acidic media using onion waste

Pal

Das

2022

Chem. Pap.

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An eco-friendly approach to inhibit the corrosion of boiler quality (BQ) steel by onion waste in acidic media was investigated. The extract from onion peel was characterized using the conventional extraction method and was characterized using HPLC. The efficacy of the onion peel extract (OPE) as a green corrosion inhibitor was studied using the weight loss method and a variety of electrochemical techniques, including open-circuit potential (OCP), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS). The Tafel polarization revealed that at 200 mg L −1 of onion peel extract (OPE), corrosion current density was reduced maximum in both 1 (M) HCl and 0.5 (M) H 2 SO 4 media. From the electrochemical impedance spectroscopy studies, the maximum inhibition efficiencies of 91.30% and 90.71% were found at 200 mg L −1 in 1 (M) HCl and 0.5 (M) H 2 SO 4 , respectively. The Langmuir isotherm was determined to be the best-fitting model, and the thermodynamic parameter, such as free energy , was computed, which indicated the physisorption of OPE onto the BQ surface. In theoretical investigations, density functional theory DFT was used to determine the adsorption efficiency and reactive sites of the OPE molecule by exploring various quantum chemical parameters. Supplementary Information The online version contains supplementary material available at 10.1007/s11696-022-02549-7.

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Corrosion Inhibition of Mild Steel in a H2SO4 Solution by Piper Guineense Squeezed Extract

Cited by 11 publications

References 4 publications

Green solution to corrosion problems – at a glance

Green solution to corrosion problems – at a glance

4-Ethylcyclohexanonethiosemicarbazone as Corrosion Inhibitor for Iron Metal in 0.5N Hydrochloric Acid Solutions

Novel use of kitchen waste: protection of boiler quality steel from corrosion in acidic media using onion waste

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