THERMODYNAMIC PROPERTIES AND CHARACTERIZATIONS OF CHITOSAN NANO-PARTICLES CORROSION INHIBITION ON THE SURFACE OF MILD STEELIN PEAT WATER MEDIA

The thermodynamic properties and characterizations of corrosion inhibition of chitosan nano-particles on the surface of mild steel in peat water media had been studied using weight loss method at temperatures of 30 - 50 oC. Steel surfaces were characterized by FT-IR spectra and SEM-EDS morphology photos. The research found that the value of DGo approaching -40 kJmol-1. The negative value of Gibbs free energy shows that the adsorption of inhibitor molecules on the surface of mild steel was achemisorption and it occurred spontaneously. Meanwhile, the values of DHo is also negative confirming that the adsoprtion of inhibitor molecules is an exothermic process. The value of DSo obtained is positive, it indicates hat the inhibitor molecules were adsorbed spontaneously on the mild steel surface. The analysis on mild steel surfaces hows that the nano-particle chitosan was adsorbed on the steel surface to form the complex compounds.

Download Full-text

THERMODYNAMIC PROPERTIES AND CHARACTERIZATIONS OF CHITOSAN NANO-PARTICLES CORROSION INHIBITION ON THE SURFACE OF MILD STEELIN PEAT WATER MEDIA

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.v12i1.936 ◽

2016 ◽

Vol 12 (1) ◽

pp. 27

Author(s):

Maria Erna ◽

Emriadi Emriadi ◽

Admin Alif ◽

Syukri Arief

Keyword(s):

Thermodynamic Properties ◽

Mild Steel ◽

Corrosion Inhibition ◽

Steel Surface ◽

Complex Compounds ◽

Nano Particles ◽

Water Media ◽

Weight Loss Method ◽

Steel Surfaces ◽

Loss Method

The thermodynamic properties and characterizations of corrosion inhibition of chitosan nano-particles on the surface of mild steel in peat water media had been studied using weight loss method at temperatures of 30 - 50 oC. Steel surfaces were characterized by FT-IR spectra and SEM-EDS morphology photos. The research found that the value of DGo approaching -40 kJmol-1. The negative value of Gibbs free energy shows that the adsorption of inhibitor molecules on the surface of mild steel was achemisorption and it occurred spontaneously. Meanwhile, the values of DHo is also negative confirming that the adsoprtion of inhibitor molecules is an exothermic process. The value of DSo obtained is positive, it indicates hat the inhibitor molecules were adsorbed spontaneously on the mild steel surface. The analysis on mild steel surfaces hows that the nano-particle chitosan was adsorbed on the steel surface to form the complex compounds.

Download Full-text

STUDIES ON THE INHIBITIVE EFFECT OF 3-HYDROXYFLAVONE ON THE ACID CORROSION OF MILD STEEL

Surface Review and Letters ◽

10.1142/s0218625x09013396 ◽

2009 ◽

Vol 16 (06) ◽

pp. 845-853 ◽

Cited By ~ 3

Author(s):

MUTHU NADAR LAVANYA ◽

DEVARAYAN KESAVAN ◽

NAGARAJAN PRABHAVATHI ◽

NAGARAJAN SULOCHANA

Keyword(s):

Weight Loss ◽

Hydrochloric Acid ◽

Mild Steel ◽

Corrosion Inhibition ◽

Steel Surface ◽

Mild Steel Surface ◽

Inhibition Effect ◽

Tafel Polarization ◽

Weight Loss Method ◽

Loss Method

The corrosion inhibition effect of 3-hydroxyflavone was studied on mild steel in 1 M hydrochloric acid ( HCl ). The anticorrosive effect was evaluated by weight loss and electrochemical methods which include Tafel polarization and AC impedance studies at 300 K. In weight loss method, the inhibition efficiency increased with increase in inhibitor concentration, and decreased with increase in temperature and immersion time, and acid concentration. The inhibitor showed maximum efficiency of 91% at 4 × 10-4 M concentration in 1 M hydrochloric acid. The Tafel polarization study showed that the inhibitor behaves likely as cathodic type. The corrosion inhibition effect measured by weight loss method and electrochemical studies was in good agreement with each other. The surface analysis was done by using scanning electron microscope (SEM). Several adsorption isotherms are assessed to study the adsorption behavior of the inhibitor on the mild steel surface. The negative value of ΔG ads indicates the spontaneous adsorption of the inhibitor on mild steel surface.

Download Full-text

A Comparative Study on Corrosion Inhibition of Mild Steel UsingPiper NigrumL. in Different Acid Medium

E-Journal of Chemistry ◽

10.1155/2010/828249 ◽

2010 ◽

Vol 7 (3) ◽

pp. 942-946 ◽

Cited By ~ 3

Author(s):

B. Anand ◽

V. Balasubramanian

Keyword(s):

Weight Loss ◽

Hydrochloric Acid ◽

Mild Steel ◽

Acid Medium ◽

Sulphuric Acid ◽

Corrosion Inhibition ◽

Piper Nigrum ◽

Time Interval ◽

Weight Loss Method ◽

Loss Method

The inhibition of corrosion of mild steel usingPiper nigrumL in different acid medium by weight loss method was investigated. The corrosion inhibition was studied in hydrochloric acid and sulphuric acid by weight loss method at different time interval at room temperature. The result showed that the corrosion inhibition efficiency of this compound was found to vary with different time interval and different acid concentration. Also, it was found that the corrosion inhibition behavior ofPiper nigrumL is greater in sulphuric acid than hydrochloric acid. So,Piper nigrumL can be used as a good inhibitor for preventing mild steel material.

Download Full-text

The Synergistic Impact of the Aqueous Valerian Extract and Zinc Ions for the Corrosion Protection of Mild Steel in Acidic Environment

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2019-1377 ◽

2019 ◽

Vol 233 (12) ◽

pp. 1713-1739

Author(s):

Emad E. El-Katori ◽

A.S. Fouda ◽

Rahma R. Mohamed

Keyword(s):

Mild Steel ◽

Corrosion Inhibition ◽

Electrochemical Impedance ◽

Attenuated Total Reflection ◽

Inhibition Mechanism ◽

Acidic Environment ◽

Complete Study ◽

Weight Loss Method ◽

Loss Method ◽

Inhibition Performance

AbstractHerein, the corrosion inhibition performance of mild steel (MS) in an acidic environment (1.0 M HCl) by the valerian extract has been studied via weight loss method (WL), potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The results illustrated that the inhibition efficiency, raised by the rise of the extract concentrations. The inhibitory mechanism depended on the creation of a stable plant extract-complex on the mild steel surface. Polarization studies confirmed that the extract behaved as a mixed type inhibitor. The corrosion inhibition was supposed to exist via adsorption of the main components of the valerian extract. Attenuated total reflection-infrared spectroscopy (ATR-IR), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were applied to investigate the change in the surface morphology and confirmed the corrosion inhibition mechanism. The complete study confirmed that the efficiency of the valerian extract as a safe, eco-friendly and exchange corrosion inhibition for mild steel in an acidic environment.

Download Full-text

Corrosion inhibition and adsorption studies by Pogostemonquadrifolius methanolic stem extract (PQMSE) on mild steel in 1M HCL

International Journal of Advanced Chemistry ◽

10.14419/ijac.v6i2.13702 ◽

2018 ◽

Vol 6 (2) ◽

pp. 157

Author(s):

Jisha M ◽

Zeinul Hukuman N. H ◽

Leena P

Keyword(s):

Mild Steel ◽

Corrosion Inhibition ◽

Adsorption Studies ◽

Corrosion Studies ◽

Weight Loss Method ◽

Stem Extract ◽

Ft Ir ◽

Corrosion Inhibition Efficiency ◽

Loss Method ◽

Ft Ir Spectroscopy

Pogostemon quadrifolius methanolic stem extract (PQMSE) has been investigated as non toxic green corrosion inhibitor for mild steel in 1 M HCl. Corrosion rates were evaluated at 303 K, 313 K and 323 K by weight loss method at varying inhibitor concentrations. Using electrochemical impedence spectroscopy (EIS) and polarisation techniques, corrosion studies were done at 303 K in various inhibitor concentrations. Adsorption studies were also conducted to study the mechanism of corrosion inhibition. Scanning electron microscopy (SEM) and Fourier – transform infrared (FT-IR) spectroscopy were used to study the surface morphology of mild steel. Electrochemical studies reveal that PQMSE exhibit excellent corrosion inhibition efficiency and it function as a mixed type of inhibitor at 303 K. The surface interaction of PQMSE on mild steel in 1 M HCl was obeying Langmiur adsorption isotherm at all studied temperatures.

Download Full-text

Influence of Benzotriazole on Corrosion Inhibition of Mild Steel in Citric Acid Medium

E-Journal of Chemistry ◽

10.1155/2010/598025 ◽

2010 ◽

Vol 7 (3) ◽

pp. 1090-1094 ◽

Cited By ~ 11

Author(s):

P. Matheswaran ◽

A. K. Ramasamy

Keyword(s):

Citric Acid ◽

Mild Steel ◽

Corrosion Inhibition ◽

Inhibition Efficiency ◽

First Order ◽

First Order Kinetics ◽

Weight Loss Method ◽

Corrosion Inhibition Efficiency ◽

Loss Method ◽

Kinetic Treatment

Benzotriazole an organic compounds has been studied as corrosion inhibition for mild steel in 1 N citric acid by weight loss method. The result showed that the corrosion inhibition efficiency of the compound was found to be varying with the temperature and acid concentration. Also it was found that the corrosion inhibition behaviour of benzotriazole is better when the concentration of inhibitor is increased. The kinetic treatment of the results shows first order kinetics.

Download Full-text

Novel Compounds of Imidazole Derivatives as Effective Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution

New Challenges and Industrial Applications for Corrosion Prevention and Control - Advances in Chemical and Materials Engineering ◽

10.4018/978-1-7998-2775-7.ch006 ◽

2020 ◽

pp. 132-155

Author(s):

Moussa Ouakki ◽

M. Galai ◽

Z. Aribou ◽

M. Rbaa ◽

B. Lakhrissi ◽

...

Keyword(s):

Weight Loss ◽

Acid Solution ◽

Mild Steel ◽

Steel Surface ◽

Langmuir Adsorption Isotherm ◽

Electrochemical Tests ◽

Imidazole Derivatives ◽

Weight Loss Method ◽

Loss Method ◽

Inhibition Performance

The inhibition performance of two imidazole derivatives, IM-Cl and IM-CH3, on the corrosion behavior of MS in 1M HCl acid solution was studied through weight loss method and electrochemical tests. The results obtained from the electrochemical methods show that inhibition efficiency increases with the increase of inhibitors concentration. The adsorption of inhibitors on the mild steel surface obeys Langmuir adsorption isotherm. The corrosion protection was once also investigated with the aid of UV–Vis spectrophotometry. SEM-EDX was performed and discussed for surface study of uninhibited and inhibited mild steel samples.

Download Full-text

Synergistic effect of ZnO nanoparticles with organic compound as corrosion inhibition

International Journal of Low-Carbon Technologies ◽

10.1093/ijlct/ctaa076 ◽

2020 ◽

Author(s):

Buraq T Sh AL-Mosawi ◽

Mohammed M Sabri ◽

Muhanad A Ahmed

Keyword(s):

Weight Loss ◽

Mild Steel ◽

Corrosion Inhibitors ◽

Inhibition Efficiency ◽

Corrosion Process ◽

Zno Nps ◽

Weight Loss Method ◽

Steel Surfaces ◽

Loss Method ◽

Isatin Derivative

Abstract In chemical manufactures, the corrosion inhibitors were added in order to reduce the corrosion of mild steel. Chemical molecules are often used on mild steel surfaces as portion of the latest finishing steps before painting and/or storage. Here, this work elucidated the utilization of an isatin derivative, namely, 3-((3-acetylphenyl)imino)indolin-2-one synergistic with zinc oxide nanoparticles for improving the impedance of mild steel (MS) against corrosion in 1.0 M hydrochloric acid using the weight loss method and scanning electron microscopy (SEM). Weight loss measurements demonstrated that the best 3-((3-acetylphenyl)imino)indolin-2-one concentration was 0.5 mM and the inhibition efficiency was 83% whereas the inhibition efficiency was 92% with addition of ZnO NPs. 3-((3-Acetylphenyl)imino)indolin-2-one retards the corrosion process at 300 K and demonstrates low inhibition efficiencies at 310, 320 and 330 K.

Download Full-text

Kinetics and Thermodynamics Investigations on Corrosion Inhibiting Properties of Coffee Husks Extract on Mild Steel in Acidic Medium

Rwanda Journal of Engineering Science Technology and Environment ◽

10.4314/rjeste.v3i1.10 ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Nyirimbibi Daniela Kalisa ◽

Theonestea Muhizi ◽

Jean Jacques Yvesa Niyotwizera ◽

Jean Baptistea Barutwanayo ◽

Jean Boscoa Nkuranga

Keyword(s):

Phenolic Compounds ◽

Mild Steel ◽

Acidic Medium ◽

Steel Surface ◽

Inhibition Efficiency ◽

Physical Adsorption ◽

Mild Steel Surface ◽

Ionic Dissociation ◽

Weight Loss Method ◽

Loss Method

In this study, the use of green corrosion inhibitors extracted from coffee husks was investigated on mild steel materials in acidic medium. Phenolic compounds from coffee husks were extracted using acetone solvent, characterised and investigated for their corrosion inhibiting properties. The FTIR and 1H-NMR technique were carried out to characterise the present phenolic compounds extracted from purified coffee husks. The corrosion inhibition efficiency of phenolic compounds from coffee husks extract on mild steel in 1.0 M HCl was evaluated by using weight loss method. The obtained results showed that corrosion rates decreased with the increase of inhibitor concentration, temperature and immersion time. The optimum inhibition efficiency of 86.5% at 25 ºC was obtained with a concentration of 400 mg/L (400 ppm) of coffee husks extract in two hours of experiment. The observed inhibition efficiency was attributed to the physical adsorption mechanism of phenolic compounds on mild steel surface through charged ion formation from protonation of lone pairs of oxygen in phenol or ionic dissociation of carboxylic acid functional group that formed a charged layer over mild steel surface. Furthermore, it was pointed out that the adsorption process obeyed the Langmuir adsorption isotherm model at all investigated temperatures between 25 and 40 ºC. Keywords: Corrosion inhibitor, phenolic compounds, coffee husks extract, mild steel, adsorption

Download Full-text