Investigation of the cationic resin Am®IRC-50 as a potential adsorbent of Co (II): Equilibrium isotherms and thermodynamic studies

Bensalah, Jaouad; Amri, Abdelhay El; Ouass, Abdelkarim; Hammani, Othmane; Kadiri, Lamya; Ouaddari, Hanae; Mustapha, Saaoudi El; Zarrouk, A.; Lebkiri, Ahmed; Srhir, Bousalham; Rifi, El Housseine

doi:10.1016/j.cdc.2022.100879

Cited by 21 publications

(11 citation statements)

References 45 publications

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“…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

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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.

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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

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“…One very significant factor to consider in an adsorption study is the initial pH of the solution. This parameter’s effect on the variation of adsorption capacity has been examined in a pH interval ranging from 2 to 12 (Figure ), including around the normal pH (pH = 6.5) . The effect of pH was assessed by preparing the adsorption curves.…”

Section: Resultsmentioning

confidence: 99%

“…The tests showed that the pH of all MB solutions increased toward basic values. The MB solutions all change to basic after the inclusion of raw clay, so the effect of this parameter was neglected in this study . The standard pH of the aqueous solution with no correction (pH 6.5) was assumed for the phenomenal adsorption tests in this study.…”

Section: Resultsmentioning

confidence: 99%

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

El Kerdoudi,

Bensalah,

Ferraa

et al. 2023

ACS Omega

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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.

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“…The outcomes demonstrated that an optimal environment for the chelation process is created by the metal–soap phase through the generation of electrostatic bonds between the fatty acids and the metal ions. Bensalah et al tested the AmIRC-50 cationic exchange resins for the eradication of cobalt metal ions. In this study, it was demonstrated that 100% removal effectiveness was at the optimum conditions of pH 5, a time of 120 min and a temperature 30 °C.…”

Section: Chemical Methodsmentioning

confidence: 99%

A Critical Review on the Sustainable Approaches for the Removal of Toxic Heavy Metals from Water Systems

Carolin

Kamalesh

Kumar³

et al. 2023

Ind. Eng. Chem. Res.

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Heavy metal pollution results in enormous environmental impacts and significant human health problems. Because of their extreme toxicity and lack of biodegradability, heavy metal ions in water are considered problematic. Although the removal of various heavy metal ions from wastewater has been widely investigated, heavy metal contamination still requires effective and suitable remediation. With special attention on heavy metal removal, this study reviews recent advances, breakthroughs, and potential applications of various physical, chemical, and biological methods. Each treatment method has specific mechanisms of interaction with metal ions, which are described in this review. The discussion in this review leads to the conclusion that adsorption has the best potential which leads to the sustainable remediation of heavy metals. In summary, the review provides a new perspective on heavy metal reduction and encourages the development of innovative strategies for heavy metal removal. The main current problems and prospects in this field are highlighted in this review.

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Investigation of the cationic resin Am®IRC-50 as a potential adsorbent of Co (II): Equilibrium isotherms and thermodynamic studies

Cited by 21 publications

References 45 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

A Critical Review on the Sustainable Approaches for the Removal of Toxic Heavy Metals from Water Systems

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