Preconcentration and ultrasensitive spectrophotometric estimation of tungsten in soils using polyurethane foam in the presence of rhodamine B: Kinetic and thermodynamic studies, and designing a simple automated preconcentration system

Al-Saidi, Hamed M.; Abdel-Fadeel, M.A.; Alharthi, Salman S.

doi:10.1016/j.jscs.2021.101301

Cited by 16 publications

(3 citation statements)

References 43 publications

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“…The values of Lagergren rate constant are calculated for various initial dye concentrations are computed utilizing the model of pseudo‐first‐order and Lagergren 42 first‐order rate expression:

\mathrm{Log}\ \left({q}_{\mathrm{e}}-{q}_{\mathrm{t}}\right)=\log\ {q}_{\mathrm{e}}-{k}_{\mathrm{lag}}/2.303\ t

At equilibrium and time t (min), the variables “ q e ” and “ q t ” represent the quantities of pigment adsorbed (mg/g) and “ q t ,” respectively. The value of “ k Lag ” denotes the adsorption rate constant, expressed in L/min.…”

Section: Resultsmentioning

confidence: 99%

Development of chitosan by using a zeolite‐supported CaO derived from waste chicken eggshell to remove Acid Red 1 dye from the aqueous solution

Katowah,

Alzahrani

2024

Polymers for Advanced Techs

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ZSM‐5 zeolite modified with acetic acid eggshell and chitosan was impregnated in three distinct proportions. As nanocomposites (NCs), the purpose of the composites was to adsorb Acid Red 1 dye (AR‐1) from an aqueous solution. The characterization of chitosan@CaO/zeolite NCs included (CHT)1@(CaO/ZT)1, (CHT)1.5@(CaO/ZT)1, and (CHT)1@(CaO/ZT)1.5, as determined by FTIR, XRD, EDX, BET, TGA, and UV–Visible absorption spectroscopy. In a bulk system, the adsorption of the AR‐1 dye onto (CHT)1@(CaO/ZT)1.5 was analyzed in terms of solution temperature, pH, contact time, and NCs dosage. The most favorable parameters for achieving efficient dye adsorption were: a pH of 2, an adsorbent dosage of 0.05 g/25 mL of dye solution, and 20 mg/L of dye concentration at 22°C temperature. The reaction reached equilibrium after 120 min. The estimated adsorption efficiency of the AR‐1 dye by the prepared NCs is 99.70%. The mechanism by which the dye was sequestered onto (CHT)1@(CaO/ZT)1.5 was exothermic. The correlation coefficient (R2) for the pseudo‐second‐order adsorption kinetic model held true at different temperatures with a value of 0.99, indicating that the model accurately described the chemical interaction between the adsorbent and Acid Red (AR‐1). Adsorption processes are characterized as exothermic, feasible, and spontaneous when the Gibbs free energy (ΔG°) and enthalpy (ΔH°) changes have negative values, respectively. It was determined that the Langmuir model best described the isotherm behavior of AR‐1 dye adsorption onto (CHT)1@ (CaO/ZT)1.5. Under ideal conditions, the surface was found to be homogeneous and had a maximum adsorption capacity (qm) of 84.03 mg/g.

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\mathrm{Log}\ \left({q}_{\mathrm{e}}-{q}_{\mathrm{t}}\right)=\log\ {q}_{\mathrm{e}}-{k}_{\mathrm{lag}}/2.303\ t

Section: Resultsmentioning

confidence: 99%

Development of chitosan by using a zeolite‐supported CaO derived from waste chicken eggshell to remove Acid Red 1 dye from the aqueous solution

Katowah,

Alzahrani

2024

Polymers for Advanced Techs

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“…To evaluate the AR dye adsorption, the pseudo-first-and pseudo-second-order kinetic models were used. Pseudo-first-order equation is given as [45] log q e − q t = log q e − K 1 2 303 t, 3…”

Section: Kinetic Modelsmentioning

confidence: 99%

Chitosan and Ferrite Nanoparticles Modified Zeolite (ZSM-5) as Adsorbent for the Removal of Acid Red Dye from Water

Alzahrani,

Katowah

2024

International Journal of Polymer Science

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The present study involved the synthesis and characterization of nanocomposites (NCs) consisting of MgFe2O4-chitosan-ZSM-5 zeolite (MgF-Cs-Ze), NiFe2O4-chitosan-ZSM-5 zeolite (NiF-Cs-Ze), and MgFe2O4@ NiFe2O4-chitosan-ZSM-5 zeolite (MgF@NiF-Cs-Ze). These NCs were investigated for their potential application as effective adsorbents in various environmental contexts. In order to investigate the composition and physical properties of the NCs, XRD, FT-IR, SEM-EDX, and TEM techniques were utilized. The present study is aimed at evaluating acid red (AR) dye adsorption behavior from aqueous solutions onto MgF-CS-Ze and NiF-CS-Ze NCs under different experimental circumstances. The study revealed that the NCs MgF-CS-Ze and NiF-CS-Ze exhibited maximum capacity for adsorption of 55.55 mg g-1 and 41.66 mg g-1, respectively, in that regard when tested with AR dye. These findings underscore the significant adsorption capabilities of these NCs. Examining the adsorption kinetics revealed that AR dye adsorption process followed the pseudo-second-order kinetic model. Resulting from thermodynamic studies, it was discovered that the adsorption of AR dye onto MgF-CS-Ze and NiF-CS-Ze NC process was an exothermic and spontaneous.

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“…The thermodynamic equilibrium of adsorption is related to the variation of the Gibbs standard free energy (G0), the variation of the standard enthalpy (H°), and the variation of the standard entropy (S°). The equations were used to determine the different thermodynamic parameters (PATHANIA et al, 2020;BARAD et al, 2022;Al-SAIDI et al, 2021):…”

Section: 𝐾𝑑 = [𝐶𝑟𝑉𝐼]𝑠 [𝐶𝐾𝑑𝑟𝑉𝐼]𝑙mentioning

confidence: 99%

Evaluation of Cr (VI) retention in soils of varying carbonate in arid land (Djelfa – Algeria)

Kessab,

Guimeur,

Hachi

et al. 2023

Rev Agr Acad

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Pollution by Chromium (Cr) presents a serious problem that may affect both health and the environment. This study aims to evaluate the contribution of carbonates to chromium sorption/desorption in soils with different concentrations of carbonates in the Djelfa region. The retention study was based on three soils with different total limestone concentrations. A physico-chemical analysis of the soils, followed by a sorption study by modifying some sorption parameters, and finally a comparison of chromium retention. According to the findings, sorption followed pseudo-second-order kinetics with a good regression value R². The activation energies were 12.85 and 16.44 kJ mol-1, implying a physical sorption mechanism. The data agree with the Freundlich model.

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Preconcentration and ultrasensitive spectrophotometric estimation of tungsten in soils using polyurethane foam in the presence of rhodamine B: Kinetic and thermodynamic studies, and designing a simple automated preconcentration system

Cited by 16 publications

References 43 publications

Development of chitosan by using a zeolite‐supported CaO derived from waste chicken eggshell to remove Acid Red 1 dye from the aqueous solution

Development of chitosan by using a zeolite‐supported CaO derived from waste chicken eggshell to remove Acid Red 1 dye from the aqueous solution

Chitosan and Ferrite Nanoparticles Modified Zeolite (ZSM-5) as Adsorbent for the Removal of Acid Red Dye from Water

Evaluation of Cr (VI) retention in soils of varying carbonate in arid land (Djelfa – Algeria)

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