A combined experimental and thermodynamics study of mild steel corrosion inhibition in 1.0 M hydrochloric solution by the cationic polymer Amberlite®IRC-50 resin extract

Bensalah, Jaouad; Galai, Mouhsine; Ouakki, M.; Amri, Abdelhay El; Hanane, Boussfiha; Habsaoui, Amar; Khattabi, Omar El; Lebkiri, Ahmed; Zarrouk, A.; Rifi, El Housseine

doi:10.1016/j.cdc.2022.100976

Cited by 8 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, at higher pH values, A negative charge exists at the surface, while the surface is positively charged at pH levels between 7.97 and 8.98. The increased adsorption of methylene blue (MB) in basic media is thus explained by the electrostatic attraction between the surface of the negatively charged adsorbent and the positively charged MB molecules. − …”

Section: Results and Discussionmentioning

confidence: 99%

Adsorption of Methylene Blue Dye and Analysis of Two Clays: A Study of Kinetics, Thermodynamics, and Modeling with DFT, MD, and MC Simulations

Sellak,

Bensalah,

Ouaddari

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

The purpose of this research was to learn more about the primary and secondary properties of Moroccan natural clay in an effort to better investigate innovative adsorbents and gain access to an ideal adsorption system. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy analysis (SEM-EDX) and X-ray fluorescence were employed for identification. SEM revealed clay grains, including tiny particles and unevenly shaped sticks. First-and second-order rate laws, representing two distinct kinetic models, were applied in the kinetic approach. Adsorption of dye MB onto natural clay was studied, and the results agreed with the 2 s order model. The significant correlation coefficients support the inference that the adsorption process was governed by the Langmuir model. Subsequent DFT analyses demonstrated that the methylene blue dye's HOMO and LUMO surfaces are dispersed across most of the dye's components, pointing to a strong interaction with the clay. To determine how the dye might be adsorbed onto the clay, we employed quantum descriptors to locate its most nucleophilic and electrophilic centers. Endothermic reactions are evident during the MB adsorption process on clay, as indicated by the positive values of ΔH 0 and ΔS 0 (70.49 kJ mol −1 of RC and 84.19 kJ mol −1 of OC and 10.45 J mol −1 K −1 of RC and 12.68 mol −1 K −1 of OC, respectively). Additionally dye molecules on the adsorbent exhibit a higher order of distribution than in the solution, indicating that the adsorption process is spontaneous.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Adsorption of Methylene Blue Dye and Analysis of Two Clays: A Study of Kinetics, Thermodynamics, and Modeling with DFT, MD, and MC Simulations

Sellak,

Bensalah,

Ouaddari

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…The IR spectra (Figure ) showed a band located at 3430.06 cm-1 wich refers to the vibrations elongation of Si–OH group, the wide band at 1700.00 cm –1 is attributed to CO deformation. The absorption bands at 3430 and 1700 cm-1 are ascribed to – OH stretching vibration in physisorbed water …”

Section: Resultsmentioning

confidence: 99%

“…The absorption bands at 3430 and 1700 cm-1 are ascribed to – OH stretching vibration in physisorbed water. 27 …”

Section: Resultsmentioning

confidence: 99%

“…The absorption bands at 3430 and 1700 cm-1 are ascribed to − OH stretching vibration in physisorbed water. 27 A band at 1004.99 788.00 and 696.00 cm −1 , was assigned to elongation vibrations of Si−O. 20 Two different bands at 867.29 and 713.25 cm −1 , indicate respectively the presence of Si−O− Al and Ca−C�O.…”

Section: Characterization 311 Scanning Electron Microscopy/energymentioning

confidence: 99%

See 1 more Smart Citation

Physicochemical Characterization of Clay and Study of Cationic Methylene Blue Dye Adsorption

El Kerdoudi,

Bensalah,

Ferraa

et al. 2023

ACS Omega

Self Cite

View full text Add to dashboard Cite

In an attempt to examine novel adsorbents in accessing an ideal adsorption system, this study aimed to help understand the main and secondary characteristics of a Moroccan natural clay. X-ray fluorescence, infrared, and scanning electron microscopy with energy-dispersive X-ray spectroscopy analysis (SEM-EDX) were used for the identification. The findings demonstrate that this Clay is composed of a mixture of quartz, calcite, magnetite, and Rutile in very high proportions. SEM revealed the presence of clay grains in the presence of fine particles and irregularly contoured sticks. The results of semiquantitative detection by EDX also reveal the presence of certain mineral species (Si, Al, Mg, Fe, K, Cl, S, Ca, and Na). The exploited kinetic technique was achieved using two different kinetic models: first- and second-order rate laws. Commensurate to the obtained results, the 2-sec order model better described the adsorption of dye MB onto the natural clay. The results confirmed that the adsorption process followed the Langmuir model with the high coefficient correlation obtained which are very close to 1. In the sequel, DFT results revealed that the HOMO and LUMO surfaces of the methylene blue dye are mostly distributed on all dye parts, reflecting possible strong interactions with the clay. The quantum descriptors investigated in this study identify the most nucleophilic and electrophilic centers that can be used to suggest a suitable mechanism for the adsorption of the dye by the clay. The values of enthalpy ΔH 0 and entropy ΔS 0 of activation were −15.88 kJ mol–1 and −0.021 J mol–1 K–1, respectively, show that the nature of the adsorption process of MB on clay is exothermic and the order of distribution of the dye molecules on the adsorbent increases with respect to that of the solution so the negative values of ΔG 0 (from −9. 62 to −8.99 kJ mol–1) indicate that the adsorption process is spontaneous.

show abstract

Hindering Corrosion of Carbon Steel in the Hydrochloric Medium by a Newly Synthesized Quinolines: Experimental and Computational Approaches

Fakhry,

El Faydy,

Benhiba

et al. 2024

J Bio Tribo Corros

View full text Add to dashboard Cite

A combined experimental and thermodynamics study of mild steel corrosion inhibition in 1.0 M hydrochloric solution by the cationic polymer Amberlite®IRC-50 resin extract

Cited by 8 publications

References 25 publications

Adsorption of Methylene Blue Dye and Analysis of Two Clays: A Study of Kinetics, Thermodynamics, and Modeling with DFT, MD, and MC Simulations

Adsorption of Methylene Blue Dye and Analysis of Two Clays: A Study of Kinetics, Thermodynamics, and Modeling with DFT, MD, and MC Simulations

Physicochemical Characterization of Clay and Study of Cationic Methylene Blue Dye Adsorption

Hindering Corrosion of Carbon Steel in the Hydrochloric Medium by a Newly Synthesized Quinolines: Experimental and Computational Approaches

Contact Info

Product

Resources

About