Study of the Iron Behavior in Acid Rain Water Solution by Application of Two Green Corrosion Inhibitors

2021 ◽  
Vol 6 (1) ◽  
pp. 19
Author(s):  
Meryem Zouarhi ◽  
Said Abbout ◽  
Hind Hammouch ◽  
Mohamed Chellouli ◽  
Hamid Erramli ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Acidic Solution ◽  
Water Solution ◽  
Solution Ph ◽  
Environment Friendly ◽  
Ohmic Drop ◽  
Acidic Rain ◽  
Corrosion Of Iron ◽  
Green Corrosion Inhibitors

The corrosion of iron in an acidic medium similar to acid rainwater (pH = 3.6) at various rotation speeds was investigated. The investigation included the inhibiting effect of two new green formulations containing oils extracted from the seeds of Jatropha curcas (labeled JAC) and Aleurite moluccana (labeled ALM). The inhibition efficiency was evaluated using electrochemical measurements, after performing an automatic ohmic drop compensation (ZIR). The results obtained show that an increase in the rotation speed leads an increase in the current density (from 75.57 µA/cm2 at 0 rpm to 99.09 µA/cm2 at 1500 rpm). This increase can be explained by the increase in the amount of dissolved oxygen at the electrode surface in the acidic rain solution (pH = 3.6). Also, the two environment-friendly corrosion inhibitors both act as mixed type inhibitors that protect iron against corrosion in the acidic solution. The inhibition efficiency increases with an increase in the inhibitor concentration to attain a maximum of 97% and 96% at 250 ppm of the ALM and the JAC, respectively.

The Effect of PH on the Efficiency of Isoniazid as Corrosion Inhibitors of Brass in 3.0% NaCl Solution

2011 ◽  
Vol 311-313 ◽  
pp. 657-661
Author(s):  
Xiao Hong Huang ◽  
Sheng Tao Zhang ◽  
Lian Yue Hu
Keyword(s):  
Weight Loss ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Solution Ph ◽  
Chemical Corrosion ◽  
Corrosion Reaction

This paper investigates the Isoniazid as chemical corrosion inhibitors for brass in 3.0% NaCl solution of different pH, employing polarization curves, electrochemical impedance spectroscopy(EIS), weight loss, and SEM. It is found that the inhibition efficiency of Isoniazid enhances with the increasing of the solution pH, from about 71% at pH 6.5 to 92% at pH 10.5. This improvement is attributed to the stronger adsorption of Isoniazid in alkaline solution, to prevent the occuring of the corrosion reaction of brass.

Anticorrosion Behaviors of Quaternary Polyethyleneimine in Acidic Environment

2009 ◽  
Vol 610-613 ◽  
pp. 136-141 ◽  
Author(s):  
Xin Zhang ◽  
Xue Dong Wu ◽  
Jian Zhong Li ◽  
Hui Wang ◽  
Dan Dai ◽  
...  
Keyword(s):  
Metal Surface ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Acidic Environment ◽  
Adsorbed Films ◽  
Polymeric Compounds ◽  
Protective Polymer ◽  
Corrosion Of Iron ◽  
Protection Of Metals

Polymeric compounds are of great interest as corrosion inhibitors in acidic environment due to their inherent stability. Polymeric film is effectively used for the protection of metals partly owing to their capacity to act as a physical barrier between the metal surface and the corrosive environment. In this paper, a cation polyelectrolyte inhibitor (Quaternary Polyethyleneimine, QPEI) was prepared. The quality and inhibition efficiency of QPEI self-adsorbed films were studied by polarization curve and electrochemical impedance spectroscopy, respectively. The compositions and morphologies of the polymer film on the steel surface were examined with the aids of SEM and XPS, respectively. The results showed that QPEI could greatly retard the corrosion of iron in sulfuric acid, which was attributed mainly to the protective QPEI film formed on the surface. Meanwhile, the inhibition of QPEI could be supposed as a mixed process, in which both cathodic and anodic corrosions were simultaneously restrained. Based on the results of XPS and SEM, it could be evidenced that the QPEI can form a protective polymer layer on the metal surface by adsorption.

The Study of Composite Substituting Mercury Corrosion Inhibitors for Zinc in Zinc-Manganese Battery

2014 ◽  
Vol 881-883 ◽  
pp. 102-107 ◽  
Author(s):  
Yun Cui ◽  
Di Shun Zhao ◽  
Hai Qu ◽  
Guan Wei Qu ◽  
Jing Liu ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Orthogonal Experiment ◽  
Single Factor ◽  
Coated Paper ◽  
Environment Friendly ◽  
Tafel Polarization ◽  
Zinc Corrosion ◽  
New Type

The inhibition behavior of a new type of mercury-free composite inhibitors for zinc corrosion in zinc-manganese dry battery was studied by single factor test and orthogonal experiment. Its inhibitor mechanism was investigated by Tafel polarization curve, electrochemical impedance spectroscopy (EIS) techniques. The performances of the coated paper and self-assembled battery were detected. The results showed that: the inhibition efficiency of the composite substituting mercury corrosion inhibitors was up to 93.33%. The performances of the coated paper and battery were consistent with standards. The composite corrosion inhibitors are a green environment- friendly corrosion inhibitor, which is expected to replace mercury in zinc-manganese dry batteries.

scholarly journals Behaviour of ortho-N-Glycoside as Green Corrosion Inhibitors for Tin in 0.5 M Citric Acid

2020 ◽  
Vol 32 (9) ◽  
pp. 2237-2242
Author(s):  
MERVATE MOHAMED MOHAMED ◽  
FATIMA A. AL-QADRI ◽  
RAIEDHAH ALSAIARI ◽  
IMAN MOHAMMAD SHEDAIWA ◽  
MABKHOOT ALSAIARI ◽  
...  
Keyword(s):  
Citric Acid ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Acid Solutions ◽  
Electrochemical Reactivity ◽  
Corrosion Inhibition Efficiency ◽  
Green Corrosion Inhibitors ◽  
Electrochemical Microscopy ◽  
Scanning Electron

A bio-nondegradable functional glycoside derivative, viz. ortho-N-glycoside, was extracted from natural cabbage plants and its corrosion inhibition behavior was evaluated in relation to tin in a 0.5 M citric solution. An electrochemical study, using potentiodynamic polarization and scanning electrochemical microscopy (SEM), was conducted to determine corrosion inhibition. The results indicate that ortho-Nglycoside possesses a corrosion inhibition efficiency of 75.83% at a concentration of 0.5 mol L-1. The results of adsorption over the tin surface obeys Langmuir isotherm. The surface and the electrochemical reactivity of the tin samples in the citric acid solutions were examined using the SEM technique. This enable the corrosion type to be demonstrated. The results of the surface analysis be obtained using scanning electron microscopy (SEM).

Plant extracts as “green” corrosion inhibitors for steel in sulphuric acid

2016 ◽  
Vol 70 (9) ◽  
Author(s):  
Shi Mo ◽  
Hong-Qun Luo ◽  
Nian-Bing Li
Keyword(s):  
Natural Products ◽  
Hydrochloric Acid ◽  
Corrosion Inhibitor ◽  
Sulphuric Acid ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Low Toxicity ◽  
Corrosion Inhibition Efficiency ◽  
Green Corrosion Inhibitors

AbstractIn recent years, plant extracts have become the focus of corrosion inhibitor research due to their low toxicity, easy availability and economical preparation. This review presents most of the recent contributions made to the application of plant extracts as corrosion inhibitors for steel in sulphuric acid, as well as in both hydrochloric acid and sulphuric acid. The constituents, properties, adsorption modes and inhibition mechanisms of these natural products are discussed. Evaluation methods and the factors that influence the corrosion-inhibition efficiency of plant extracts are also summarised.

scholarly journals Amino acids as corrosion inhibitors for copper in acidic medium: Experimental and theoretical study

2013 ◽  
Vol 78 (12) ◽  
pp. 2069-2086 ◽  
Author(s):  
Ingrid Milosev ◽  
Jasminka Pavlinac ◽  
Milan Hodoscek ◽  
Antonija Lesar
Keyword(s):  
Amino Acids ◽  
Density Functional ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Theoretical Study ◽  
Theoretical Calculations ◽  
Dynamic Simulations ◽  
Protonated Forms ◽  
Dynamics Simulations ◽  
Green Corrosion Inhibitors

Experimental electrochemical methods combined with quantum chemical calculations and molecular dynamics simulations were used to investigate the possibility of use various amino acids as ?green? corrosion inhibitors for copper in 0.5 M HCl solution. Among eleven amino acids studied, cysteine achieved the highest inhibitor effectiveness reaching 52% at 10 mM concentration. Other amino acids reached achieved effectiveness less than 25%, some of them even acted as corrosion accelerators. Based on the experimental results, theoretical calculations and simulations were focused on cysteine and alanine. The electronic and reactivity parameters of their protonated forms in electrical double layer were evaluated by density functional calculations. In addition, molecular dynamic simulations were introduced to follow the adsorption behaviour of these two amino acids at the Cu(111) surface in the electrolyte solution. The results indicate that the orientation of both molecules is nearly parallel to the surface except of ammonium group which is directed away from the surface. Therefore, as the orientation of the cysteine and alanine molecules at the surface is similar, thiol functional group is responsible for superior inhibition efficiency of cysteine.

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