Adsorption of Acid Red 114 onto Fe3O4@Caffeic acid recycable magnetic nanocomposite

Yıldız, Aylin

doi:10.18596/jotcsa.287332

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…The adsorption kinetic data was investigated by applying pseudo first order kinetic equation given by Lagergren [22][23][24]. According to this model, one active site on surface occupied with one adsorbate species.…”

Section: Pseudo First Order Kineticsmentioning

confidence: 99%

Kinetics and Thermodynamics of Acid Red 1 Adsorption on Used Black Tea Leaves from Aqueous Solution

Ahmed¹,

Rafia²,

Hossain³

2021

ijSciences

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This study presents the investigation of kinetics and thermodynamics of adsorption of Acid Red 1 (AR1) from aqueous solution on used black tea leaves (UBTL) as a biosorbent. The effects of initial dye concentration, solution pH and temperature on the adsorption kinetics were evaluated through batch adsorption experiments. Different kinetic model equations such as pseudo first order, pseudo second order, Elovic and Intra-particle diffusion were applied to the experimental data to evaluate their validity and determined their respective parameters. The results revealed that the adsorption kinetics is well described by pseudo second order kinetic equation. The equilibrium amounts adsorbed, calculated from the pseudo second order kinetic plots for different initial concentrations, were used to construct the adsorption isotherm which is well expressed by Langmuir equation compared with Freundlich one and the maximum adsorption capacity was 30.03 mg/g. Again, the equilibrium amounts adsorbed, calculated from the pseudo second order kinetic plots for different temperatures, were increased with the increase of adsorption temperature indicating the adsorption is endothermic. The calculated values of apparent activation energy (Ea = 3.35 kJ/mol), enthalpy change (∆H = +30.05 kJ/mol), entropy change (∆S = +0.119 kJ/mol) and free energy change (∆G) revealed that the adsorption of AR1 on UBTL at pH 2.0 was endothermic, spontaneous and physical in nature. The equilibrium amount adsorbed for different initial pH of solution, calculated from pseudo order kinetic plots, was found to be decreased with increase of solution pH from 2.0 to 8.0 suggesting the adsorption mechanism is dominated by electrostatic interaction between positive surface of UBTL at pH 2.0 and negative AR1 dye molecules.

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Section: Pseudo First Order Kineticsmentioning

confidence: 99%

Kinetics and Thermodynamics of Acid Red 1 Adsorption on Used Black Tea Leaves from Aqueous Solution

Ahmed¹,

Rafia²,

Hossain³

2021

ijSciences

View full text Add to dashboard Cite

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Functionalized magnetic nanoparticles as powerful sorbents and stationary phases for the extraction and chromatographic applications

Keçili

Ghorbani‐Bidkorbeh

Dolak

et al. 2021

TrAC Trends in Analytical Chemistry

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Activated Plantain Peel Biochar As Adsorbent For Removal of Zinc(II) Ions From Aqueous Solution: Equilibrium and Kinetics Studies.

Felix¹,

Ienna²,

Ikelle³

et al. 2018

Journal of the Turkish Chemical Society Section A: Chemistry

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Plantain peel biomass was carbonized, activated, and characterized using BET surface area and XRD. The XRD diffraction indicated crystalline structure with crystallite size of 14.56 nm evaluated through Debye-Scherrer equation. The pore size (cc/g) and pore surface area (m 2 /g) of the biochar was 8.79 and 16.69 respectively from BET surface area. Various parametric properties such as effect of initial metal ion concentration, pH, and contact time were studied in a batch reaction process. Adsorption of zinc from aqueous solution decreased with an increase of pH and initial concentration. Equilibrium modeling studies suggested that the data fitted mainly to the Langmuir isotherm. Adsorption kinetic data tested using various kinetic models fitted the Bangham's pore diffusion model implicating pore diffusion as the main rate limiting step. The sorption studies indicated the potential of plantain peel biochar as an effective, efficient and low cost adsorbent for remediating zinc (II) ions contaminated environment.

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Adsorption of Acid Red 114 onto Fe3O4@Caffeic acid recycable magnetic nanocomposite

Cited by 4 publications

References 21 publications

Kinetics and Thermodynamics of Acid Red 1 Adsorption on Used Black Tea Leaves from Aqueous Solution

Kinetics and Thermodynamics of Acid Red 1 Adsorption on Used Black Tea Leaves from Aqueous Solution

Functionalized magnetic nanoparticles as powerful sorbents and stationary phases for the extraction and chromatographic applications

Activated Plantain Peel Biochar As Adsorbent For Removal of Zinc(II) Ions From Aqueous Solution: Equilibrium and Kinetics Studies.

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