scholarly journals Optimization of Blended Guava and Fluted Pumpkin Leaves extract as corrosion inhibitor of mild steel in 0.5 m hydrochloric acid

2021 ◽  
Vol 40 (3) ◽  
pp. 393-403
Author(s):  
C.F Nwachukwu ◽  
I.M. Dagwa ◽  
B.I. Ugheoke
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Oil And Gas ◽  
Phytochemical Analysis ◽  
Fluted Pumpkin ◽  
Weight Loss Method ◽  
Loss Method ◽  
Weight Loss Result ◽  
Good Substitute

There are many plant extracts that have been studied for possible use as corrosion inhibitors in the oil and gas industries. Hence, this work is focused on optimization of blended Guava and Fluted Pumpkin Leaves extract as corrosion inhibitor of mild steel in HCI using Weight loss method. Response Surface Methodology of Design Expert trial version 12 StatEase was used to design and analyze the result of the 35-run experiments. Three factor-three level was adopted in the design. Time, Temperature and Inhibitor Quantity were the independent variables, while the acid concentration of 0.5M was constant throughout the experiments and Inhibition Efficiencies were measured using IE formula. Intervals of 1 hr, 0.2g, and 10°C were chosen for the immersion time, inhibitor quantity and temperature, respectively. Phytochemical analysis carried out on the Guava and Fluted Pumpkin Leaves shows that each leaf extract contains phytochemicals which are responsible for inhibiting corrosion. Weight loss result shows that the Blended extract reduces the corrosion rate of mild steel in 0.5M HCl. Additionally, 4 experiments for Blended Extract, Fluted Pumpkin, Guava Extract and Industrial Inhibitor were carried out at optimal conditions as predicted by the software at time 4.036 hr, temperature 49.5°C, inhibitor quantity 0.487g and ratio of 59.21GE:FP40.79 Inhibition Efficiencies of the Blended, Fluted Pumpkin, Guava Extracts and Industrial Inhibitor were 93.70%, 78.14%, 63.7% and 95.18%, respectively. The results show that the blended and Industrial Inhibitor compared well with the software predicted IE of 96.085%. Therefore, the blended extract could serve as good substitute to the industrial inhibitor.

scholarly journals New Corrosion Inhibitor Derived from Coumarin

2017 ◽  
Author(s):  
Ahmed Al-Amiery
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Weight Loss ◽  
Fourier Transform ◽  
Magnetic Resonance ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Damage Reduction ◽  
Weight Loss Method ◽  
Loss Method ◽  
Hcl Solution

New corrosion inhibitor derived from coumarin-3-amine namely 3-((2-chlorobenzylidene)amino)coumarin was synthesized and characterized by CHN elemental analysis in addition to Fourier transform infrared and nuclear magnetic resonance techniques. The anti-corrosion ability of 3-((2-chlorobenzylidene)amino)coumarin to inhibit the impacts of corrosion has been demonstrated and damage reduction of the mild steel also. 3-((2-chlorobenzylidene)amino)coumarin, has been employed as a good corrosion inhibitor for mild steel in HCL solution. The efficiency of the inhibition was figured according to weight loss method and it was 74.6%.

scholarly journals Corrosion Inhibition of Bark Extract of Euphorbia royleana on Mild Steel in 1M HCl

2019 ◽  
Vol 40 ◽  
pp. 25-29
Author(s):  
Bishal Thapa ◽  
Dipak Kumar Gupta ◽  
Amar Prasad Yadav
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Inhibition Efficiency ◽  
Bark Extract ◽  
Potential Measurement ◽  
Maximum Inhibition ◽  
Weight Loss Method ◽  
Loss Method ◽  
Loss Experiment

The bark extract of Euphorbia royleana as a green corrosion inhibitor was studied in 1M HCl using weight-loss method and potential measurement. The results show that the bark extract of Euphorbia royleana is an effective anti-corrosion inhibitor of mild steel in acidic media. The corrosion rate decreases with the time of immersion. Weight loss experiment shows that the loss in weight decreases with the time of immersion and inhibition efficiency increases with the concentration of extract. It was observed that maximum inhibition efficiency is 99.60% in 100% concentration of extract. Potential measurement study shows that bark extracts act as a mixed type of inhibitor i.e. inhibits both anodically as well as cathodically. 

scholarly journals Effect of N-(6-aminobenzo[d]thiazol-2-yl)benzamide and 2,6-diamino-benzothiazole as Corrosion Inhibitor in acid medium

2016 ◽  
Vol 12 (12) ◽  
pp. 4593-4613
Author(s):  
Rekha. S ◽  
Kannan. K ◽  
Gnanavel. S
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Medium ◽  
Potentiodynamic Polarization ◽  
Inhibition Efficiency ◽  
Free Energy Of Adsorption ◽  
Weight Loss Method ◽  
Ft Ir ◽  
Loss Method

2-amino-6-nitrobenzothiazole(ANBT) was used as an inhibitor for the corrosion of mild steel in acid medium since the inhibition efficiency was low for that compound, 2,6-diaminobenzothiazole (DABT) and N-(6-aminobenzo [d] thiazol-2-y1) benzamide(ABTB) was synthesized,  and characterized by FT-IR, H1NMR, and C13NMR.The synthesized compound was tested as a corrosion inhibitor for mild steel in 1N HCl solution using weight loss, Potentiodynamic polarization, and AC impedance techniques. The inhibition efficiency was studied at the different time, temperature and acid concentration by weight loss method. The values of activation energy and free energy of adsorption of these compounds were also calculated, which reveals that the inhibitor was adsorbed on the mild steel by physisorption mechanism. Adsorption obeys Langmuir and Temkin adsorption isotherms. The results obtained by weight loss method revealed that the compound performed as a better inhibitor for mild steel in 1N HCl. Potentiodynamic polarization studies showed that the inhibitor acts as a mixed type inhibitor.AC impedance studies revealed that the corrosion process was controlled by charge transfer process. Surface analysis was studied using SEM and FT-IR.

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.

Neem Leaf Extract as a Corrosion Inhibitor on Mild Steel in Acidic Solution

2018 ◽  
Vol 35 ◽  
pp. 208-220 ◽  
Author(s):  
Akindele Okewale ◽  
Felix Omoruwuo
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Leaf Extract ◽  
Steel Surface ◽  
Adsorption Mechanism ◽  
Mild Steel Surface ◽  
Freundlich Isotherms ◽  
Weight Loss Method ◽  
Neem Leaf Extract

The influence of neem leaf extract on corrosion inhibition of mild steel in 0.1 M HCl solution was studied using the weight loss method. Neem leaf extract which contains the double bond, carbonyl groups, and aromatic rings functional group as shown by the GCMS, phytochemical test, and FTIR analyses is one of the good natural plant extract that can be used as corrosion inhibitor. The weight loss on surface of mild steel at various inhibitor concentrations was determined. The highest inhibition efficiency of 93.24% was achieved using the neem leaf extract as corrosion inhibitor. Adsorption mechanism was investigated using Langmuir, Temkin, and Freundlich isotherms. Inhibitor adherence on the mild steel surface was spontaneous with the negative Gibb’s free energy value obtained. The mixed type adsorption mechanism (physisorption and chemisorption) is proposed for the inhibitor adsorption on mild steel surface. The inhibitor was adsorbed on the mild steel surface through adsorption of the phytochemical components on the surface of mild steel which protects the metal surface from corroding. The corrosion rate decreases from 0.001 to 0.0002MPY with increase in inhibitor concentrations and exposure time.

Research on Synthesis and Corrosion Inhibitory Performance of Diisopropylamine Methyl Urea

2015 ◽  
Vol 713-715 ◽  
pp. 2839-2842
Author(s):  
Fu Rong Zhou ◽  
Hu Zhang
Keyword(s):  
Weight Loss ◽  
Hydrochloric Acid ◽  
Corrosion Inhibitor ◽  
Polarization Curve ◽  
Reaction Temperature ◽  
Product Yield ◽  
Tafel Polarization ◽  
Weight Loss Method ◽  
Curve Method ◽  
Loss Method

Diisopropylamine methyl urea (DMU) was synthesized by raw materials of diisopropylamine, paraformaldehyde and urea in acid media, the effect of synthesis conditions including the dosage of hydrochloric acid, the mole ratio of the materials and the reaction temperature on the product yield were studied. A corrosion inhibitor formula that contained DMU, cyclohexylamine, ethanolamine and propiolic alcohol were designed, and static weight-loss method, Tafel polarization curve method were used to evaluate the corrosion inhibitory performance. The results showed that the best synthetic conditions for DMU were the mole ratio of diisopropylamine, paraformaldehyde and urea, 1:1.2:1; reaction temperature, 80°C; the mole ratio of hydrochloric acid and diisopropylamine 1.2:1. The product yield in this condition was 90.23%, the melting point was 230°C. The results of static weight-loss method revealed that DMU, cyclohexylamine, ethanolamine and propiolic alcohol had great synergy effect, the inhibition efficiency of gas phase static weight-loss method reached to 97.61%, and attained 85.20% in liquid phase static weight-loss method. The results of Tafel polarization curve method indicated that the corrosion inhibitor formula contained DMU had a good inhibitory effect to the cathode electrochemical corrosion process of A3 carbon steel.

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

2010 ◽  
Vol 7 (3) ◽  
pp. 942-946 ◽  
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.

scholarly journals Natural Polymer of Iraqi Apricot Tree Gum as a Novel Corrosion Inhibitor for Mild Steel in 1 M HCl Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
I. M. Alwaan ◽  
Fouad Kadhim Mahdi
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Polymer Concentration ◽  
Natural Polymer ◽  
Free Energy Of Adsorption ◽  
Adsorption Enthalpy ◽  
Enthalpy Of Adsorption ◽  
Weight Loss Method ◽  
Loss Method ◽  
Apricot Tree

Corrosion inhibition of mild steel in 1 M hydrochloric acid using Iraqi apricot tree gum Arabic as natural polymer was studied. The weight loss method was used to predict the efficiency of the inhibitor on corrosion of mild steel in a temperature range of 17–40°C. The FTIR result of natural polymer revealed that the C=O and O-H groups were found in the structure of the natural polymer. The results of weight loss method showed that the inhibition efficiency (I%) increased with the increase in both the natural polymer concentration and the temperature; therefore, chemical adsorption mechanism was suggested in this system. The different mathematical models of the adsorption isotherms were studied and the results revealed that natural polymer was found to obey Temkin, Langmuir, and Freundlich adsorption isotherm. The activation energy of adsorption, enthalpy of adsorption, and entropy of adsorption were obtained for different concentrations of natural polymer (0, 0.1, 0.2, and 0.3 g/L) and the results showed that the thermodynamic properties decreased with the loading of a natural polymer. Gibbs free energy of adsorption results was a minus value that led to the conclusion of the spontaneous adsorption of the natural polymer in this system.

Study on Corrosion Scale Inhibitor for Blast Furnace Gas TRT System

2013 ◽  
Vol 864-867 ◽  
pp. 1342-1345
Author(s):  
Fu Rong Zhou ◽  
Hu Zhang ◽  
Guang Wu Du ◽  
Wen Hua Wang
Keyword(s):  
Weight Loss ◽  
Blast Furnace ◽  
Corrosion Inhibitor ◽  
Inhibition Efficiency ◽  
Acid Anhydride ◽  
Scale Inhibitor ◽  
Corrosion Scale ◽  
Blast Furnace Gas ◽  
Weight Loss Method ◽  
Loss Method

Cyclohexylamine, morphine, ethanolamine, propiolic alcohol, seventeen alkenyl amide ethyl imidazoline, water depolymerization malaya acid anhydride, etc were chosen as the raw material of corrosion scale inhibitor in view of corrosion scaling reason and characteristic of blast furnace top gas pressure recovery turbine unit. The optimized formula of corrosion inhibitor have been obtained through orthogonal experiment. Corrosion and scale inhibitor performance were evaluated respectively by static weight-loss method, dynamic weight-loss method and calcium carbonate deposition. The results show that when these components are reasonable distributed, the corrosion effect is satisfied. When water depolymerization malaya acid anhydride is combined with the corrosion inhibitor, the corrosion and scale inhibition efficiency of composite inhibitor are more than 90%. Simulation blast furnace gas is adopted in dynamic simulation experiment, the corrosion inhibition efficiency is over 92%.

scholarly journals New 3,3'-((4-Aryl) methylene)bis(4-hydroxy-2H chromen 2- one) (MHO) derivatives as Corrosion Inhibitor

2020 ◽  
Vol 10 (4) ◽  
pp. 137-146
Author(s):  
Yasameen K. Al-Majedy ◽  
Hiba H. Ibraheem ◽  
Ali Jasem ◽  
Ahmed A. Al-Amiery
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Weight Loss ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Corrosion Inhibitor ◽  
Weight Loss Method ◽  
Loss Method ◽  
Scanning Electron ◽  
Surface Technique

New green natural particles as corrosion inhibitor namely, macromolecules were incorporated beginning from 4-hydroxycoumarin with 4-nitrobenzaldehyde in the presence of glacial acid (1) then synthesis with methyl bromoacetate after that this compound (2) used to synthesis of 2,2'-(3,3'-((4-nitrophenyl)methylene)bis(2-oxo-2H-chromene-4,3 diyl))bis(oxy)diacetohydrazide (3) when was refluxed with hydrazine hydrate when compound(2) refluxed with HCl to obtain compound (4)  and tested all the synthesis compounds on mild steel (MS) in 1 M HCl, 1M H2SO4 media by a weight loss method and identification of the surface technique employee scanning/electron/microscope (SEM) studies. The weight loss investigation demonstrated that inhibition performances have been improved via concentration raising of inhibitor. To support our results scanning electron microscopy was employed to clarify the surface of the MS with and without synthesis compounds in 1.0 M HCl and1.0M H2SO4 media.

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