Removal of Some Heavy Metals from Wastewater Using Hydrothermally Synthesized Zirconium Phosphate As Ion Exchange Material

El-Aryan, Y. F.; Alqahtany, Faleh Z.

doi:10.1134/s0036024421150085

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The adsorbate requires a longer time to diffuse through cracks or pores in the alginate-based adsorbent before reaching the active sites. Whereas the subsequent slow step may be due to the competition between metal ions for the remaining available surface sites and the diffusion of metal ions into the inner surface of adsorbent beads [25].…”

Section: Resultsmentioning

confidence: 99%

Kinetics, isotherms, and thermodynamic modeling of light lanthanides(III): La(III) and Gd(III) using Mn–Ni nanoparticles

F. El-Aryan

2023

Bull. Chem. Soc. Eth.

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The sorption of light lanthanides, La(III) and Gd(III) on Mn–Ni nanoparticle was studied at varying ions concentrations, pH, contact time and temperatures. The kinetics of sorption of La(III) and Gd(III) were investigated, the experimental data were analyzed using the pseudo-first-order, pseudo-second-order forms, Elovich, and intra-particle diffusion models. The sorption kinetics of investigated ions was described by pseudo-second-order model. The experimental isotherms data were analyzed using Freundlich, Langmuir, and Temkin models were used to analyze the sorption isotherm data of ion exchange of La(III) and Gd(III) on Mn–Ni nanoparticle. The best fit was obtained by the Langmuir model with high correlation coefficients (R2 = 0.995) with a maximum monolayer adsorption capacity of 8.81 mg/g. KEY WORDS: Sorption isotherm, Kinetics models, Mn–Ni nano particle Bull. Chem. Soc. Ethiop. 2024, 38(1), 255-267. DOI: https://dx.doi.org/10.4314/bcse.v38i1.19

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Section: Resultsmentioning

confidence: 99%

Kinetics, isotherms, and thermodynamic modeling of light lanthanides(III): La(III) and Gd(III) using Mn–Ni nanoparticles

F. El-Aryan

2023

Bull. Chem. Soc. Eth.

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“…These include ion exchange, photocatalytic oxidation, electrochemical technologies, membrane separation processes and adsorption [ 2 , 4 , 16 , 42 ]. El-Aryan et al [ 13 ] prepared a type of ion exchange material based on zirconium phosphate and reported that the cation-exchanger showed a high selectivity for Pb(II) compared to other metal ions. Peng et al [ 35 ] used lead sulfate precipitate chromium (VI) according to the solubility difference between lead sulfate and lead chromate and the precipitation efficiency was higher than 90%.…”

Section: Introductionmentioning

confidence: 99%

Adsorption behavior of Cr(VI) by biomass-based adsorbent functionalized with deep eutectic solvents (DESs)

Huang

Pan

et al. 2022

BMC Chemistry

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This study was aimed to evaluate the performance of DESs functionalized peanut shell (PSD) as biosorbent for removing Cr(VI) from water. The effects of pretreatment, initial concentration, adsorption temperature, kinetics, adsorption isotherm, and thermodynamics were investigated. Scanning electron microscopy (SEM) and Point of Zero charge (pHpzc) techniques were used for characterization of the adsorbents. The results showed that the rigid structure of peanut shell was broken down after DESs modification and the point of zero charge was 6.02 for peanut shell and 6.84 for PSD, which exhibited a slightly acid character. Based on the comparisons of linear and nonlinear analysis of four kinetic models and four isotherms, the pseudo-second-order kinetic model was found to be suitable for describing the adsorption process. The presence of a boundary effect was observed within the range of research, indicating that internal diffusion was not the only rate-controlling step. The equilibrium data were well represented by the Langmuir model rather than the Freundlich, Temkin, and Dubinin–Radushkevich models. The maximum capacity derived was 5.36 mg g−1. Changes in Gibb’s free energy, enthalpy, and entropy revealed that Cr(VI) adsorption onto modified peanut-shell powders was a spontaneous and endothermic process. However, the highest desorption efficiency was only 8.77% by using NaOH as a desorbing agent. Graphical abstract

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Adsorption Behavior of Cobalt and Chromium by Using Polyacrylamide Sn(IV) Molybdophosphate

El-Aryan,

Melhi,

Alosaimi

et al. 2023

Russ. J. Inorg. Chem.

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Removal of Some Heavy Metals from Wastewater Using Hydrothermally Synthesized Zirconium Phosphate As Ion Exchange Material

Cited by 5 publications

References 14 publications

Kinetics, isotherms, and thermodynamic modeling of light lanthanides(III): La(III) and Gd(III) using Mn–Ni nanoparticles

Kinetics, isotherms, and thermodynamic modeling of light lanthanides(III): La(III) and Gd(III) using Mn–Ni nanoparticles

Adsorption behavior of Cr(VI) by biomass-based adsorbent functionalized with deep eutectic solvents (DESs)

Adsorption Behavior of Cobalt and Chromium by Using Polyacrylamide Sn(IV) Molybdophosphate

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