The Effect of Acanthus montanus Leaves Extract on Corrosion of Aluminium in Hydrochloric Acid Medium

Udom, G. I.; Cookey, G.A.; Abia, A. A.

doi:10.9734/cjast/2017/37723

Cited by 6 publications

(4 citation statements)

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“…However, the inhibition efficiency apparently decreased over time. These were in line with the findings of Udom et al, 2017;Karthiga et al, (2018); Ali and Suleiman (2018). It was observed that 5.0g/L of the extract at 6hours in both 1.0 M and 5.0 M gave the best corrosion inhibition with an inhibition efficiency of 88.7% and 71.76% respectively.…”

Section: Resultssupporting

confidence: 91%

Mild steel deterioration inhibition in 1.0M and 5.0M tetraoxosulphate (VI) acid using leaf extract of <i>Pterocarpus santaliniodes</i>

Ofoma¹,

Ekemezie²,

Emeruwa³

2018

Journal of Applied Sciences and Environmental Management

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The prevention of deterioration of mild steel in 1.0M and 5.0M H2SO4 solution by leaf extracts of Pterocarpus santaliniodes was investigated in this study using gravimetric and gasometric methods. Data obtained from the study revealed that leaf extracts had a maximum inhibition efficiency of 88.70% and 96% for weight loss and gasometric analysis, respectively for 1.0M H2SO4, and an inhibition efficiency of 71.76% and 79.66% for weight loss and gasometric analysis respectively for 5.0M H2SO4. It was observed that the gasometric method gave the optimum protection. The average activation energy was 73.71KJ/mol in 1.0M H2SO4, and 74.41KJ/mol in 5.0M H2SO4. The adsorption of the phytochemicals on the surface of the mild steel were further assessed by the Langmuir and Freundlich isotherms. The extract was found to be good inhibitor for mild steel corrosion in the H2SO4 solutions. The amount of material loss decreased in the in the presence of the extract when compared to the blank acid solution.

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Section: Resultssupporting

confidence: 91%

Mild steel deterioration inhibition in 1.0M and 5.0M tetraoxosulphate (VI) acid using leaf extract of <i>Pterocarpus santaliniodes</i>

Ofoma¹,

Ekemezie²,

Emeruwa³

2018

Journal of Applied Sciences and Environmental Management

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“…Table 1 indicates increase in half-life and decrease in rate constant as the concentration of the extract increased. Decreasing values of rate constant of corrosion with increase in extract concentration has been reported elsewhere [13,14,15,16]. Decreasing rate constant of corrosion with extract concentration suggests that Napoleonae imperialis Leaves extract had positive impact in inhibiting the corrosion of mild steel in 0.5 MHCl solution.…”

Section: Kinetics Of Corrosion Inhibitionsupporting

confidence: 60%

THERMODYNAMIC AND KINETIC STUDIES OF THE CORROSION INHIBITION OF MILD STEEL IN 0.5 M HCl USING NAPOLEONAE IMPERIALIS LEAVES EXTRACT.

Cookey¹,

Vopnu²,

Maduelosi³

2021

JCSN

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Thermodynamics and kinetics of the inhibitory behaviour of Napoleonae imperialis leaves extract on the corrosion of mild steel in 0.5MHCl solution were examined using gravimetric technique at different concentrations of the extract and temperatures (303, 313 and 323 K). Results show that increase in extract concentration and temperature increased the inhibition efficiency of the extract. However, inhibition efficiency decreased with time of immersion of the mild steel coupons. Activation energy of adsorption values obtained at different extract concentrations were positive at all concentrations but higher than that of the blank. Thermodynamic and kinetic data obtained conform to Langmuir adsorption isotherm. The adsorption mechanism suggests physisorptive adsorption process and aligned with the first order kinetics. The highest extract concentration (2.5g/l) showed maximum inhibition efficiency of 84.15% at 323K. The overall results suggest that the leaves extract of Napoleonae imperialis acts as a good inhibitor for the corrosion of mild steel in 0.5MHCl solutions.

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“…The plant extraction may become corrosion inhibitors due to the advantages of wide sources and biodegradation. It was previously reported that the extracts of Napoleonaeaimperalis [4], Cardiospermumhalicacabum leaf [5,6], Tiliacordata [7], Morindacitrifolia [8], Acanthus montanus [9] and Calotropisprocera [10] showed corrosion inhibition. Heteroatoms such as nitrogen (N), oxygen (O), sulfur (S) and phosphorus (P) can be used as adsorption centers of inhibitor molecules and these atoms also have become important features of efficient corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of corrosion of mild steel in simulated oil well waterby aqueous extract of Hibiscus rosa-sinensis flower

Latha,

Kavitha,

Susai

2024

Zas Mat

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controlling the corrosion of mild steel in simulated oil well water (SOWW). Weight loss method reveals that 10 % v/v of the extract offers 82 % inhibition efficiency (IE) to mild steel (MS) immersed SOWW. The mechanistic aspects of corrosion inhibitive effect have been investigated by polarization study and AC impedance spectra. Polarization study reveals that the mixed type of inhibitor in the presence of inhibitor system. The corrosion inhibition effect is confirmed by the increase in the linear polarization resistance value and decrease in the corrosion current value. The protective layer is formed on the metal surface is confirmed by the AC impedance spectra. This is confirmed by the fact that there is increase in charge transfer resistance value and decrease in the double layer capacitance value. The adsorption of inhibitor molecule obey Langmuir adsorption isotherm. The protective coating is characterized by FTIR spectroscopy. It confirms that the inhibitor has coordinated with ferrous ion the metal surface through the active principle component of β-sitosterol, quercetin and kaempferol-3-xylosylglucoside. The surface morphology has been investigated by scanning electron microscopy (SEM). Hence, aqueous extract of Hibiscus rosa-sinensis flower with simulated oil well water good corrosive inhibitive effect on pipeline made of mild steel.

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The Effect of Acanthus montanus Leaves Extract on Corrosion of Aluminium in Hydrochloric Acid Medium

Cited by 6 publications

References 0 publications

Mild steel deterioration inhibition in 1.0M and 5.0M tetraoxosulphate (VI) acid using leaf extract of <i>Pterocarpus santaliniodes</i>

Mild steel deterioration inhibition in 1.0M and 5.0M tetraoxosulphate (VI) acid using leaf extract of <i>Pterocarpus santaliniodes</i>

THERMODYNAMIC AND KINETIC STUDIES OF THE CORROSION INHIBITION OF MILD STEEL IN 0.5 M HCl USING NAPOLEONAE IMPERIALIS LEAVES EXTRACT.

Inhibition of corrosion of mild steel in simulated oil well waterby aqueous extract of Hibiscus rosa-sinensis flower

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