Anticorrosive efficacy and adsorptive study of guar gum with mild steel in acidic medium

Peter, Anjali; Sharma, Sanjay K.; Obot, I.B.

doi:10.1186/s40543-016-0108-3

Cited by 19 publications

(16 citation statements)

References 36 publications

(27 reference statements)

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“…GG is commonly used in the food, pharmaceutical, and cosmetics industries, mostly due to its low cost and its specific properties, such as binding agent, stabiliser, and thickening agent [12]. However, as witnessed in an increasing number of publications, GG is also emerging as a promising candidate as a corrosion inhibitor of metal infrastructures [13,14,15,16,17,18]. Moreover, GG being a biodegradable, nontoxic natural compound provides more environmental benefits than the common toxic inorganic inhibitors, with great benefits for the environment.…”

Section: Introductionmentioning

confidence: 99%

“…The author believed that the presence of oxygen atoms in the repeating mannose units of the GG structure made possible its adsorption on the metal surface. After this first report, several studies have been published on the use of GG as a corrosion inhibitor in acid and neutral solutions [14,15,16,17]. All these studies reported that GG was an effective corrosion inhibitor.…”

Section: Introductionmentioning

confidence: 99%

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Guar Gum as an Eco-Friendly Corrosion Inhibitor for Pure Aluminium in 1-M HCl Solution

et al. 2019

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Guar gum (GG) was investigated as a possible eco-friendly corrosion inhibitor for pure aluminium in a 1-M HCl solution at different temperatures and immersion times using gravimetric and electrochemical techniques. The results showed that GG was a good corrosion inhibitor for pure aluminium in the studied environment. The inhibition efficiency of GG increased with increasing inhibitor concentration and immersion time but decreased with increasing temperature. Polarisation measurements revealed that GG was a mixed type inhibitor with a higher influence on the cathodic reaction. The adsorption behaviour of the investigated inhibitor was found to obey the Temkin adsorption isotherm and the calculated values of the standard free adsorption energy indicate mixed-type adsorption, with the physical adsorption being more dominant. The associated activation energy (Ea) and the heat of adsorption (Qa) supported the physical adsorption nature of the inhibitor. Fourier-transform infrared spectroscopy (FTIR) and Raman/SERS were used to explain the adsorption interaction between the inhibitor with the surface of the metal. The results suggested that most inhibition action of GG is due to its adsorption of the metal surface via H-bond formation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Guar Gum as an Eco-Friendly Corrosion Inhibitor for Pure Aluminium in 1-M HCl Solution

et al. 2019

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“…This may be because polarization studies are carried out in a quick time span. This time may not be sufficient for the inhibitor molecule to adsorb on the metal surface and hence inhibition efficiency showed a decrease when compared to weight loss method where the probability of gradual adsorption is more [59]. Electrochemical impedance spectroscopy (EIS): Impedance measurement has been carried out in order to evaluate charge transfer capacitance (R ct ) and double layer capacitance (C dl ) and inhibition efficiency (I.E.).…”

Section: Resultsmentioning

confidence: 99%

Efficiency of Alstonia schoalris Leaves on Mild Steel in Acid Medium as Pickling Inhibitor

2019

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This work aims to find the inhibition efficiency of Alstonia schoalris leaves on mild steel in 1N HCl medium. Corrosion monitoring was done using weight loss method, potentiodynamic polarization studies like Tafel and impedance studies and the results shows that the inhibitor acts well on mild steel in acidic medium. Polarization studies show that the inhibitor behaves like a mixed type. The inhibitor was characterized using FTIR which showed the presence of hetero atoms in the inhibitor molecule that get adsorbed on metal surface and provided better efficiency and that was proven by different adsorption isotherm. Zeta potential showed the stability of particle in the medium. Surface analysis of specimen was studied using FESEM, EDX and contact angle measurements. The analysis showed that the surface exposed to inhibitor is less corroded and contact angle measurement showed hydrophilic nature of the surface. Here, the inhibition is attributed to the electrostatic interaction of active sites on metal and inhibitor.

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“…La mayor parte de la goma guar que es comercializada para usos industriales proviene del endospermo, teniendo diversos grados de pureza industrial en función a su uso, ya que su aplicación es mayormente como aditivo químico, modificador de propiedades tales como hidratación, viscosidad y estabilidad, que puede añadirse para poder controlar la gelificación y el descenso de viscosidad (Thombare et al, 2016). La funcionalidad y las propiedades de esta goma determinan su alto uso y su consumo en industrias textil, alimentos, petroquímica, minería y papel para diversas aplicaciones (Peter et al, 2016).…”

Section: Usos En La Industria De Alimentosunclassified

Goma guar: un aliado en la industria alimentaria

Castañeda‐Ovando

González-Aguilar

Granados-Delgadillo

et al. 2020

ICBI

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Los polisacáridos son moléculas poliméricas de distintos sacáridos unidos por enlaces glucosídico, que llegan a tener un grado de polimerización alto, y, por ende, pesos moleculares elevados. Los polisacáridos de mayor importancia en ámbito de alimentos provienen, o son principalmente de origen vegetal, presentes en las hojas, en cortezas, exudados, frutos, semillas, etc. La goma guar es un polisacárido extraído de la planta Cyamopsis tetragonoloba y que debido a sus características es utilizada ampliamente en la industria de alimentos como mejorador de textura en productos como el pan, yogurt, pasteles, embutidos, entre otros.

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Anticorrosive efficacy and adsorptive study of guar gum with mild steel in acidic medium

Cited by 19 publications

References 36 publications

Guar Gum as an Eco-Friendly Corrosion Inhibitor for Pure Aluminium in 1-M HCl Solution

Guar Gum as an Eco-Friendly Corrosion Inhibitor for Pure Aluminium in 1-M HCl Solution

Efficiency of Alstonia schoalris Leaves on Mild Steel in Acid Medium as Pickling Inhibitor

Goma guar: un aliado en la industria alimentaria

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