Inhibitory action of aqueous coffee ground extracts on the corrosion of carbon steel in HCl solution

Torres, Vanessa Vasconcelos; Amado, Roberto Salgado; Sá, Camila Faia de; Fernandez, Tatiana L.; Riehl, Carlos Alberto da Silva; Torres, Alexandre Guedes; D’Elia, Eliane

doi:10.1016/j.corsci.2011.03.021

Cited by 242 publications

(103 citation statements)

References 29 publications

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“…Still, in this study, it was shown that the isolated chlorogenic acid (5-caffeoylquinic acid) does not explain the corrosion inhibition observed for the coffee extracts 1 .…”

Section: Introductionmentioning

confidence: 95%

“…Melanoidins are commonly present in foods such as barley malts, bread crust, bakery products and roasted coffee 20 . The chemical structure of melanoidins is complex and still unknown but could be responsible for the inhibitory action of the spent coffee ground extracts observed in our previous studies 1,19 . Therefore, in the present work, we isolated the high molecular weight fraction from roasted coffee grains and studied its behavior as corrosion inhibitor.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work, two aqueous spent coffee grounds extracts (from infusion and decoction process) acted as an effective corrosion inhibitor for carbon steel in 1 mol L -1 HCl, which was explained through an adsorption process by a chemisorption mechanism 1 . Still, in this study, it was shown that the isolated chlorogenic acid (5-caffeoylquinic acid) does not explain the corrosion inhibition observed for the coffee extracts 1 .…”

Section: Introductionmentioning

confidence: 99%

“…Plant extracts are generally inexpensive and can be obtained through simple extraction processes. In our previous works, the effect of aqueous extracts of spent coffee grounds, garlic peels and fruit peels (mango, orange, passion fruit and cashew), grape pomace and green Yerba mate on the corrosion of carbon steel in 1 mol L −1 HCl was studied 1,[14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, interest has increased in the development and use of low-cost and eco-friendly compounds as corrosion inhibitors for mild steel [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . Plant extracts are generally inexpensive and can be obtained through simple extraction processes.…”

Section: Introductionmentioning

confidence: 99%

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Roasted Coffee Extracts as Corrosion Inhibitors for Mild Steel in HCL Solution

et al. 2016

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The behavior of roasted coffee extract and its isolated high molecular weight fraction have been investigated as carbon steel corrosion inhibitors in HCl solution by weight loss measurements, potentiodynamic polarization curves, electrochemical impedance and scanning electron microscopy analysis. All results showed that the high molecular weight fraction, rich in melanoidins, present an important role in the inhibitory action of the roasted coffee extract in the acid corrosion of carbon steel.

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“…Still, in this study, it was shown that the isolated chlorogenic acid (5-caffeoylquinic acid) does not explain the corrosion inhibition observed for the coffee extracts 1 .…”

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Roasted Coffee Extracts as Corrosion Inhibitors for Mild Steel in HCL Solution

et al. 2016

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Effectiveness of Croton cajucara Benth on corrosion inhibition of carbon steel in saline medium

Felipe

Silva

Martínez‐Huitle

et al. 2012

Materials & Corrosion

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Application of corrosion inhibitors is one of the most common practices for the protection of steel structures and their alloys in industry. Since metallic corrosion is a major cause of economic losses in the oil industry, the use of natural inhibitors is an alternative for sustainable technological development. In the present study the effectiveness of the hydroalcoholic extract of the plant species Croton cajucara Benth (CC) dissolved in a microemulsion system (MES‐CC) as well as in dimethyl sulfoxide (DMSO‐CC) was evaluated as corrosion inhibitor on carbon steel AISI 1020 in saline medium. Surface tension measurements of the MES‐CC confirmed micelle formation, and rheological data showed that viscosity varies with temperature. According to potentiodynamic technique and Tafel extrapolation, maximum inhibition efficiencies were effective (93.84% for MES‐CC and 64.73% for DMSO‐CC) with predominant control of cathodic reaction. The adsorption of MES‐CC on carbon steel surface obeys Langmuir adsorption isotherm, while DMSO‐CC was found to follow the Frumkin isotherm.

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Evaluation of Eulychnia acida and Echinopsis chiloensis (Cactaceae) extracts in inhibiting corrosion of carbon steel in HCl solution

Figueredo

Vera

Molinari

2019

Materials & Corrosion

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In the present study, the activity of extracts obtained from the stems of two endemic species of the central–northern region of Chile (Eulychnia acida [Copao] and Echinopsis chiloensis [Quisco]), was evaluated as potential corrosion inhibitors for carbon steel in 0.1 M HCl. The total content of phenols and flavonoids in the extracts was determined, and the main components were identified by high‐performance liquid chromatography–mass spectrometry, being similar in both species. The inhibition efficiency of extracts was evaluated by mass loss measures, Tafel polarization curves, and electrochemical impedance spectroscopy. The assay results showed similar values in inhibition percentages, around 88% at extract concentrations of 1,500 ppm. The adsorption on the steel surface followed the Langmuir model adsorption isotherm, whose thermodynamic parameters (ΔG°ads for Copao and Quisco, −17.81 and −17.70 kJ/mol, respectively) suggest a physisorption mechanism. The scanning electron microscopy analyses showed that in the presence of the extracts, the surface of the steel is covered by a thin film that allows the sanding marks to be visualized; while without the extracts the surface is rough due to the HCl corrosion effect.

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Inhibitory action of aqueous coffee ground extracts on the corrosion of carbon steel in HCl solution

Cited by 242 publications

References 29 publications

Roasted Coffee Extracts as Corrosion Inhibitors for Mild Steel in HCL Solution

Roasted Coffee Extracts as Corrosion Inhibitors for Mild Steel in HCL Solution

Effectiveness of Croton cajucara Benth on corrosion inhibition of carbon steel in saline medium

Evaluation of Eulychnia acida and Echinopsis chiloensis (Cactaceae) extracts in inhibiting corrosion of carbon steel in HCl solution

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