Adsorption of the anionic dye methyl orange on used artificial zeolites: kinetic study and modeling of experimental data.

Bensalah, Jaouad; Habsaoui, Amar; Abbou, Brahim; Kadiri, Lamya; Lebkiri, İmane; Lebkiri, Ahmed; Rifi, El Housseine

doi:10.13171/mjc941911181112jb

Cited by 26 publications

(10 citation statements)

References 22 publications

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“…The spectrum range of FTIR was within 4500–400 cm –1 . 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%

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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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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“…Numerous studies have made it possible to develop various industrial effluent treatment processes to reduce these contaminants quantity in aquatic environments. These studies include chemical precipitation processes, coagulation/flocculation, ion exchange, membrane processes, and adsorption (6)(7)(8)(9)(10)(11)(12)(13)(14).…”

Section: Increasedmentioning

confidence: 99%

“…Moreover, the research and development of new low-cost, cost-effective, and efficient adsorbents for ecosystem treatment remains a great challenge. Natural adsorbents such as agricultural solid waste, algae, soils, and clays modified or not have shown promising profitability for trapping pollutants (4,6,15,16). Recently clay minerals have received considerable attention as alternative adsorbent materials that are less expensive, abundant and have multifunctional properties depending on the type of clay (17).…”

Section: Increasedmentioning

confidence: 99%

Kinetic and thermodynamic study on adsorption of cadmium from aqueous solutions using natural clay

Abbou

Lebkiri

Ouaddari³

et al. 2021

Journal of the Turkish Chemical Society Section A: Chemistry

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Heavy metal pollution poses a great risk for the environment and the human health. Cadmium is among the most common pollutants found in wastewater, known for its great toxicity even in small doses. This work aims to study the removal of cadmium using natural Moroccan clay (MC). The clay was characterized using X-ray diffraction, X-ray fluorescence, Fourier transform infrared spectroscopy, BET, and SEM. The effects of several experimental parameters on the clay adsorption capacity towards cadmium ions, such as MC dose, initial concentration and contact time, initial pH, and temperature were studied. The kinetic models Pseudo-first order, Pseudo-second order, and Elovich are evaluated to identify the adsorption process. The adsorption mechanism was determined by the use of the adsorption isotherms: Langmuir, Freundlich, and Temkin model. The results show that the heavy metal retention obeys the Pseudo-second order (R²≥0.99). The Langmuir isotherm model provided the best fit (R²≥0.99) to the experimental data for the adsorption of Cd(II) by MC as compared to the Freundlich and Temkin model. The maximum monolayer adsorption capacity of Cd(II), using the Langmuir model equation, is equal to 5.25 mg/g. The adsorption is a spontaneous and an endothermic process characterized by a disorder of the medium.

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“…This study essentially based on the physical, chemical and mechanical tests carried out on intact and reworked samples. Swelling potential classi cation performed using indirect methods [20]. However, substructure soils mostly made up of silt and clay, which, because of their high water content and low permeability, are very sensitive to water.…”

Section: Introductionmentioning

confidence: 99%

Study of the mechanical behavior of swelling and highly compacted clays in road construction

Ouslimane,

Bensalah,

Barebita

et al. 2023

Preprint

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Clays considered “problematic” swelling clay soils in the construction of road infrastructures. They generally associated with high compression, high plasticity, and evolutionary behavior. The objective of this article is to study the mechanical behavior of swelling clays and particularly a clay from the Kenitra region. To do this, samples taken from the main clay sites in the region. They then subjected to several series of tests in the laboratory, namely identification tests and mechanical tests (shear test and odometer compressibility test). The results obtained show that the clays studied exhibit very different behaviors. Indeed, the clays of Sidi Slimane, Sidi Kacem and Ouazzane have very interesting mechanical characteristics and can offered in their natural state as road materials, at least for pavements. Ouazzane clay, on the other hand, has very swelling mechanical characteristics (Cg = 0.06), and clay from Sidi Slimane (Cg = 0.04) and Sidi Kacem (Cg = 0.05) and cannot be used in its raw state. Natural without any treatment.

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Adsorption of the anionic dye methyl orange on used artificial zeolites: kinetic study and modeling of experimental data.

Cited by 26 publications

References 22 publications

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

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

Kinetic and thermodynamic study on adsorption of cadmium from aqueous solutions using natural clay

Study of the mechanical behavior of swelling and highly compacted clays in road construction

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