Eco-friendly Bladder wrack extract as a corrosion inhibitor for thermal desalination units during acid cleaning process

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mohamed A. Deyab ◽  
Mohsen Mohammed Al-Qhatani
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Steel Part ◽  
Electrochemical Reactions ◽  
Cleaning Process ◽  
Acid Cleaning ◽  
Thermal Desalination ◽  
Ft Ir ◽  
Ir Analysis ◽  
Loss Method

Abstract To strengthen the thermal desalination units and sustainability of their performance and reduce their corrosion during acid cleaning processes to remove the scale layers, economy and nontoxic strategies are needed. Here we clarify how Bladder wrack extract (BWE) can reduce the corrosion mitigations for thermal units (carbon steel part) during the acid cleaning (1.0 M HCl). We find that the performance of BWE extract reached an excellent value (94.2%) at 500 ppm. The rate of electrochemical reactions is very low in the presence of BWE extract, and is consistent with the mass loss method. The activity of BWE extract as a corrosion inhibitor is due to the presence of mixture of organic compounds inside the extract. These compounds were identified by HPLC, SEM and FT-IR analysis.

scholarly journals Plantago Major Extract as an Environmentally Friendly Inhibitor for the Corrosion of L-80 Carbon Steel in 0.5 M H2SO4 Media

2021 ◽  
Vol 11 (4) ◽  
pp. 12186-12201
Keyword(s):  
Carbon Steel ◽  
Electrochemical Impedance ◽  
Plantago Major ◽  
Force Microscopy ◽  
Atomic Force ◽  
Good Accord ◽  
Ft Ir ◽  
Ir Analysis ◽  
Loss Method ◽  
Increasing Temperature

The inhibition impact of Plantago major leaves extract on carbon steel (CS) which immersed in 0.5 M H2SO4 media was ‎investigated by several methods such as mass loss method (ML), electrochemical impedance spectroscopy (EIS), potentiodynamic ‎polarization (PDP), and electrochemical frequency modulation‎ (EFM). Data obtained from different measurements was showed that %IE enhanced with added the Plantago major extract doses also increased with increasing temperature degree. Thermodynamic adsorption and kinetic parameters of the system were also measured and studied. The ‎adsorption of the Plantago major extract on CS is, according to Temkin isotherm. The ‎ curves from PDP explained that the Plantago major extract is considered as a mixed-type inhibitor. The EIS technique's acquired data verified that the studied extract produced a thin layer that covers and protects the CS surface. Atomic ‎Force Microscopy (AFM) and Fourier Transform Infrared (FT-IR) analysis conformed that Plantago major extract was adsorbed on CS surface. The data obtained from unlike measurements were in good accord.

scholarly journals Opuntia ficus-indicaExtract as Green Corrosion Inhibitor for Carbon Steel in 1 M HCl Solution

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
J. P. Flores-De los Ríos ◽  
M. Sánchez-Carrillo ◽  
C. G. Nava-Dino ◽  
J. G. Chacón-Nava ◽  
J. G. González-Rodríguez ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Oh Groups ◽  
Green Corrosion Inhibitor ◽  
Monolayer Adsorption ◽  
Ft Ir ◽  
Ir Analysis ◽  
Hcl Solution

The effect ofOpuntia ficus-indica(Nopal) as green corrosion inhibitor for carbon steel in 1 M HCl solution has been investigated by using weight loss tests, potentiodynamic polarization curves, and electrochemical impedance spectroscopy measurements. Also, scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) analysis were performed. The inhibitor concentrations used ranged from 0 to 300 ppm at 25, 40, and 60°C. Results indicated the inhibition efficiency increases with increasing extract concentration and decreases with the temperature, and the inhibitor acted as a cathodic-type inhibitor which is physically absorbed onto the steel surface. In fact, the adsorption of the inhibitor on the steel surface follows the Langmuir adsorption isotherm, indicating monolayer adsorption. The presence of heteroatoms such as C, N, and O and OH groups were responsible for the corrosion inhibition.

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.

Study on Corrosion Inhibition of Compound Corrosion Inhibitor of Molybdate in Seawater

2012 ◽  
Vol 581-582 ◽  
pp. 755-758
Author(s):  
Ying Li Wei ◽  
Ya Qiang Tian ◽  
Yue Hua Wang ◽  
Xiao Hong Yang
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Electrochemical Polarization ◽  
Quaternary Compound ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

The corrosion inhibition performance of molybdate and molybdate compound corrosion inhibitor of carbon steel in seawater were tested using weight loss method, electrochemical polarization curve, and the quaternary compound molybdate corrosion inhibitor were made sure through the experiments. The experiment results show that the compound corrosion inhibitors have obvious synergistic corrosion inhibition effects in the proportion of 40 mg/L molybdate, 10mg/L HEDP, 4mg/L Zn2+ and 50 mg/L glucose acid salts.

Polarized microbeam FT-IR analysis of single fibers

1996 ◽  
Vol 54 ◽  
pp. 206-207
Author(s):  
Liling Cho ◽  
David L. Wetzel
Keyword(s):  
Molecular Orientation ◽  
Transition Point ◽  
Polymer Fibers ◽  
Single Fiber ◽  
Wire Grid ◽  
Polyester Fibers ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Relationship ◽  
Wire Grid Polarizer

Polarized infrared microscopy has been used for forensic purposes to differentiate among polymer fibers. Dichroism can be used to compare and discriminate between different polyester fibers, including those composed of polyethylene terephthalate that are frequently encountered during criminal casework. In the fiber manufacturering process, fibers are drawn to develop molecular orientation and crystallinity. Macromolecular chains are oriented with respect to the long axis of the fiber. It is desirable to determine the relationship between the molecular orientation and stretching properties. This is particularly useful on a single fiber basis. Polarized spectroscopic differences observed from a single fiber are proposed to reveal the extent of molecular orientation within that single fiber. In the work presented, we compared the dichroic ratio between unstretched and stretched polyester fibers, and the transition point between the two forms of the same fiber. These techniques were applied to different polyester fibers. A fiber stretching device was fabricated for use on the instrument (IRμs, Spectra-Tech) stage. Tension was applied with a micrometer screw until a “neck” was produced in the stretched fiber. Spectra were obtained from an area of 24×48 μm. A wire-grid polarizer was used between the source and the sample.

Synthesis and Evaluation of Levulinic Ester as Biodiesel Additives

2020 ◽  
Vol 71 (8) ◽  
pp. 21-26
Author(s):  
Elena-Emilia Oprescu ◽  
Cristina-Emanuela Enascuta ◽  
Elena Radu ◽  
Vasile Lavric
Keyword(s):  
Maximum Yield ◽  
Strength Distribution ◽  
Point Of View ◽  
Reaction Parameters ◽  
X Ray ◽  
Ethyl Levulinate ◽  
Ft Ir ◽  
Ir Analysis ◽  
Biodiesel Blend ◽  
Acid Strength Distribution

In this study, the SO42-/TiO2-La2O3-Fe2O3 catalyst was prepared and tested in the conversion of fructose to ethyl levulinate . The catalyst was characterized from the point of view of the textural analysis, FT-IR analysis, acid strength distribution, X-ray powder diffraction and pyridine adsorption IR spectra. The influence of the reaction parameters on the ethyl levulinate yield was study. The maximum yield of 37.95% in levulinate esters was obtained at 180 �C, 2 g catalyst and 4 h reaction time. The effect of ethyl levulinate addition to diesel-biodiesel blend in different rates, i.e, 0.5, 1, 2.5, 5 (w.t %) on density, kinematic viscosity and flash point was evaluated and compared with the European specification.

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