A new intraparticle mass transfer rate model for cyclic adsorption and desorption in a slab, cylinder or sphere

Yao, Congwei

doi:10.1007/s10450-012-9420-4

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…Due to substantial inaccuracies with this equation, a number of other approximate kinetic equations were proposed. They referred both to the process of diffusion with adsorption [2][3][4][5] and diffusion with chemical reaction [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Dyfuzja z reakcją chemiczną – ocena dokładności przybliżonego modelu kinetycznego dla ziaren kulistych

Gwadera

Kupiec

2017

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Diffusion with chemical reaction -assessment of the accuracy of an approximate kinetic model for spherical pellets Dyfuzja z reakcją chemiczną -ocena dokładności przybliżonego modelu kinetycznego dla ziaren kulistych Abstract Diffusion with a first-order chemical reaction in a spherical pellet of a catalyst with third-type boundary conditions was considered; such a process can be described by a kinetic model based on the continued fraction approximation. Results of calculations obtained from an approximate kinetic model were compared with the exact solution. It was found that the application of this approximate model provides a good level of accuracy and requires short calculation times.

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Section: Introductionmentioning

confidence: 99%

Dyfuzja z reakcją chemiczną – ocena dokładności przybliżonego modelu kinetycznego dla ziaren kulistych

Gwadera

Kupiec

2017

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“…This is due to the active sites on adsorbent surface. Yao studied intraparticle diffusion model for cyclic adsorption and desorption in a lab, cylinder or sphere is proposed on the basis of the asymptotic behavior of the adsorption rate for short and long cycle periods, through relationship with the accurate solution and the linear driving force (LDF) model [30].…”

Section: Parabolic Diffusion Modelmentioning

confidence: 99%

“…Yao studied in a lab, cylinder or sphere is propo rate for short and long cycle periods linear driving force (LDF) model [30].…”

Section: Parabolic Diffusion Modelmentioning

confidence: 99%

Removal of basic green 5 by carbonaceous adsorbent: Adsorption kinetics

Alam¹,

Rehman²,

Amin³

et al. 2018

Bull. Chem. Soc. Eth.

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ABSTRACT. The Eucalyptus lenceolata wood was collected from Malakand division, Khyber Pakhtunkhwa Pakistan. Chemical activation of sample was conducted for surface efficiency. Batch studies were performed to address various experimental parameters like, contact time, temperature and adsorbent dosage for the removal of dye. For elemental analysis, surface morphology and for identification of different functional groups, energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) techniques were applied, respectively. Removal of dye (Basic Green 5) was studied on raw and activated samples by kinetics adsorption at different temperature. BET adsorption isotherm was used to characterize the surface area of the sample. Under the conditions investigated, a higher carbonization temperature promoted development of porous structures. Intraparticle diffusion, Elovich and Bhangam models were used for adsorption kinetics studies. From adsorption kinetic data thermodynamic parameters like ΔH ≠ , ΔS ≠ and ΔE ≠ were determined. The results show that the adsorption is spontaneous process. The endothermic nature of adsorptive process is due to the positive value of enthalpy. The negative entropy shows that acids molecules on the surface of adsorbent take an oriented position. The results shows that all the models were best fitted for these data of adsorption.

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Adsorption of Methylene Blue Onto Acacia Modesta Carbon: Kinetic and Thermodynamic Study

Alam

Rehman

Amin

et al. 2019

Zeitschrift Für Physikalische Chemie

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The adsorption of methylene blue was carried out by adsorbent prepared from Acacia modesta. The sample wood was collected from Dir lower Khyber Pakhtunkhwa Pakistan. Chemical activation of the sample was conducted for surface efficiency. Surface of raw and activated sample was elucidated by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and Fourier transform infrared (FTIR) techniques. Adsorption of methylene blue was studied on raw and activated samples by kinetics adsorption at different adsorption temperatures such as 20 °C, 30 °C and 40 °C. The adsorption equilibrium was established within 2 h. Elovich, Bhangam, and Parabolic diffusion equations were applied to the adsorption kinetics data and were found fit for adsorption. From adsorption kinetic data the parameters like ΔH≠, ΔS≠ and ΔE≠ were calculated and showed that the adsorption process was spontaneous process. Entropy in descending order shows that dye molecules adsorbed in an oriented position.

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A new intraparticle mass transfer rate model for cyclic adsorption and desorption in a slab, cylinder or sphere

Cited by 3 publications

References 14 publications

Dyfuzja z reakcją chemiczną – ocena dokładności przybliżonego modelu kinetycznego dla ziaren kulistych

Dyfuzja z reakcją chemiczną – ocena dokładności przybliżonego modelu kinetycznego dla ziaren kulistych

Removal of basic green 5 by carbonaceous adsorbent: Adsorption kinetics

Adsorption of Methylene Blue Onto Acacia Modesta Carbon: Kinetic and Thermodynamic Study

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