scholarly journals Inhibition and adsorption potentials of mild steel corrosion using methanol extract of Gongronema latifoliuim

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Chiedozie C. Aralu ◽  
Helen O. Chukwuemeka-Okorie ◽  
Kovo G. Akpomie
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Methanol Extract ◽  
Low Cost ◽  
Steel Corrosion ◽  
Green Inhibitor ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method ◽  
Gongronema Latifolium

AbstractGongronema latifolium was used as a low-cost green inhibitor for mild steel by applying the weight loss method at 303–323 K. There was a decrease in percentage inhibition with temperature increase and a rise in inhibition efficiency with an increase in the concentration of inhibitor. The obtained results showed that Gongronema latifolium extract of methanol had percentage inhibition efficiencies in the range of 59.06–81.69%. Corrosion inhibition of mild steel showed a good fit to the Langmuir model compared to the Freundlich and El-Awardy adsorption models. Thermodynamics parameters, such as $$ E_{\text{a}} $$ E a , $$ Q_{\text{ads}} $$ Q ads and $$ \Delta G_{\text{ads}} $$ Δ G ads were evaluated and showed that the mechanism of corrosion inhibition of mild steel by methanol extract of Gongronema latifolium was physisorption. The results of this work indicated efficient potentials of the methanol extract of Gongronema latifolium as a low-cost corrosion inhibitor in acidic media for mild steel, which could be applied to reduce corrosion of metals in industries.

scholarly journals The inhibition of mild steel corrosion in 0.5 M H2SO4 solution by radish leaf extract

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40997-41009 ◽  
Author(s):  
Dongyi Li ◽  
Panpan Zhang ◽  
Xinyu Guo ◽  
Xiaowei Zhao ◽  
Ying Xu
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Electrochemical Method ◽  
Leaf Extract ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
H2so4 Solution ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of radish leaf extract (RLE) on mild steel corrosion in 0.5 M H2SO4 was studied by the weight loss method and the electrochemical method.

scholarly journals Efektifitas Kitosan sebagai Inhibitor Korosi pada Baja Lunak dalam Air Gambut

2012 ◽  
Vol 13 (2) ◽  
pp. 118
Author(s):  
Maria Erna ◽  
Emriadi Emriadi ◽  
Admin Alif ◽  
Syukri Arief
Keyword(s):  
Mild Steel ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Mild Steel Corrosion ◽  
Water Ph ◽  
Weight Loss Method ◽  
Ft Ir ◽  
Loss Method ◽  
Chitin And Chitosan ◽  
Inhibition Technique

This research is intended to learn inhibition efficiency of mild steel corrosion in peat water using two type ofchitosan. First chitosan is without treatment and the second one is synthesized by ionotropic gelation method andthen is characterized by Fourier transform Infrared spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM).Diameter of chitosan porous is about 500 nm which is measured based on morphological photo using SEM withinhomogeneous porous shape and porous distribution is unsmooth . Effect of chitin and chitosan on the corrosionof mild steel in peat water is studied using weight loss method. It is found that corrosion inhibition efficiencydepends on peat water pH, inhibition technique and interaction time. The results show that inhibition efficiency ofchitosan without treatment and with treatment are 88.73% and 93.32% respectively. The inhibition is assumed tooccur via physicsorption of the chitin and chitosan molecules on the metal surface. The Langmuir adsorptionisotherm is tested for their fit to the experimental data.

scholarly journals Inhibition of Mild Steel Corrosion in Acidic Medium by Aqueous Extract ofTridax procumbensL.

2011 ◽  
Vol 8 (2) ◽  
pp. 685-688 ◽  
Author(s):  
G. Ilayaraja ◽  
A. R. Sasieekhumar ◽  
P. Dhanakodi
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Aqueous Extract ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Time Interval ◽  
Mild Steel Corrosion ◽  
Steel Material ◽  
Tridax Procumbens ◽  
Weight Loss Method

The inhibition efficiency (IE) of an aqueous extract ofTridax procumbensL. in controlling corrosion of mild steel has been investigated by weight loss method in the absence and presence of corrosion inhibitor at different time interval at room temperature. The result showed that the corrosion inhibition efficiency of these compounds was found to vary with different time interval and different acid concentration. Also, it was found that the corrosion inhibition behavior ofTridax procumbensL. is greater in sulphuric acid than hydrochloric acid medium. SoTridax procumbensL. can be used as a good inhibitor for preventing mild steel material.

scholarly journals Sucrose fatty esters from underutilized seed oil of Terminalia catappa as potential steel corrosion inhibitor in acidic medium

2016 ◽  
Vol 6 (4) ◽  
pp. 287
Author(s):  
Adewale Adewuyi ◽  
Omolade Rahman Bello ◽  
Rotimi A. Oderinde
Keyword(s):  
Mild Steel ◽  
Acidic Medium ◽  
Inhibition Efficiency ◽  
Fatty Ester ◽  
Steel Corrosion ◽  
Fatty Esters ◽  
Terminalia Catappa ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

<p class="PaperAbstract"><span lang="EN-US">Corrosion of metals is a common problem which requires definite attention. In response to this, the oil was extracted from the seed of </span><span lang="EN-US">Terminalia catappa</span><span lang="EN-US"> and used to synthesize sucrose fatty esters via simple reaction mechanism which was considered eco-friendly and sustainable. The corrosion inhibition capacity of sucrose fatty esters for mild steel in 1 M HCl was studied using the weight loss method. It was shown that sucrose fatty ester inhibited corrosion process of mild steel and obeyed Langmuir isotherm. Corrosion rate and inhibition efficiency of sucrose fatty esters were found to reduce with increase of immersion time. The study presented sucrose fatty ester as a promising inhibitor of mild steel corrosion in acidic medium.</span></p>

scholarly journals Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4499-4511 ◽  
Author(s):  
Ifzan Arshad ◽  
Aamer Saeed ◽  
Pervaiz Ali Channar ◽  
Syeda Aaliya Shehzadi ◽  
Muhammad Naeem Ahmed ◽  
...  
Keyword(s):  
Mild Steel ◽  
Schiff Bases ◽  
Acidic Medium ◽  
Electrochemical Method ◽  
Corrosion Inhibitors ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of three new bis-Schiff bases on mild steel corrosion in 0.5 M HCl was studied by the weight loss method and the electrochemical method.

scholarly journals Corrosion Inhibition of Mild Steel in 0.5 M H2SO4 Solution by Plant Extract of Annona squamosa

2021 ◽  
Vol 33 (9) ◽  
pp. 2219-2228
Author(s):  
S. Karthikeyan ◽  
S.S. Syed Abuthahir ◽  
A. Samsath Begum ◽  
K. Vijaya
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Inhibition Mechanism ◽  
H2so4 Solution ◽  
Annona Squamosa ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

In aqueous solution of 0.5M H2SO4, the Annona Squamosa extract was systematically analyzed to ensure its inhibition mechanism by using potentiodynamics polarization, the weight loss method, and electrochemical impedance spectroscopy (EIS) and its inhibitory effect on mild steel corrosion. For mild steel corrosion in 0.5 M H2SO4 solution, its inhibition efficiency increases and decreases with an increase in its concentration and temperature, respectively. Potentiodynamic polarization analyses revealed that the Annona Squamosa behaves as a cathodic inhibitor. In presence of Annona Squamosa extract in 0.5 M H2SO4 solution, an increase in the activation energy of corrosion leads to a decrease in the rate of mild steel corrosion. On mild steel surfaces, the adsorption behaviour of the extract conformed to the Temkin isotherm, Langmuir isotherm and Arrhenius equation. The EIS results were correlated with the polarization findings. According to atomic force microscopy (AFM) and scanning electron microscopy (SEM), the inhibition of mild steel corrosion proceeds through the adsorption of the extract on the mild steel surface.

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

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 <sup>o</sup>C. Steel surfaces were characterized by FT-IR spectra and SEM-EDS morphology photos. The research found that the value of DG<sup>o </sup>approaching -40 kJmol<sup>-</sup><sup>1</sup>. 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 DH<sup>o </sup>is also negative confirming that the adsoprtion of inhibitor molecules is an exothermic process. The value of DS<sup>o </sup>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.

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