Mass transfer mechanisms in fixed-bed adsorption of erythromycin

2008 ◽  
Vol 2 (4) ◽  
pp. 353-360 ◽  
Author(s):  
Ying Sun ◽  
Jiawen Zhu ◽  
Kui Chen ◽  
Sheng Zhu ◽  
Jie Xu
Keyword(s):  
Mass Transfer ◽  
Fixed Bed ◽  
Fixed Bed Adsorption ◽  
Transfer Mechanisms

New insights from modelling and estimation of mass transfer parameters in fixed-bed adsorption of Bisphenol A onto carbon materials

2020 ◽  
Vol 228 ◽  
pp. 103566 ◽  
Author(s):  
A.B. Hernández-Abreu ◽  
S. Álvarez-Torrellas ◽  
V.I. Águeda ◽  
M. Larriba ◽  
J.A. Delgado ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Bisphenol A ◽  
Carbon Materials ◽  
Fixed Bed ◽  
Fixed Bed Adsorption ◽  
Transfer Parameters

A mass transfer model for the fixed-bed adsorption of ferulic acid onto a polymeric resin: axial dispersion and intraparticle diffusion

2016 ◽  
Vol 37 (15) ◽  
pp. 1914-1922 ◽  
Author(s):  
Nancy E. Davila-Guzman ◽  
Felipe J. Cerino-Córdova ◽  
Eduardo Soto-Regalado ◽  
Margarita Loredo-Cancino ◽  
José A. Loredo-Medrano ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Ferulic Acid ◽  
Fixed Bed ◽  
Intraparticle Diffusion ◽  
Axial Dispersion ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Polymeric Resin ◽  
Fixed Bed Adsorption

Evaluation of mass transfer mechanisms involved during the adsorption of metronidazole on granular activated carbon in fixed bed column

2020 ◽  
Vol 36 ◽  
pp. 101303 ◽  
Author(s):  
V. Díaz-Blancas ◽  
C.G. Aguilar-Madera ◽  
J.V. Flores-Cano ◽  
R. Leyva-Ramos ◽  
E. Padilla-Ortega ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Fixed Bed ◽  
Granular Activated Carbon ◽  
Fixed Bed Column ◽  
Transfer Mechanisms

scholarly journals Numerical Simulation of Multicomponent Isobaric Adsorption in Fixed Bed Columns

1986 ◽  
Vol 3 (2) ◽  
pp. 49-59 ◽  
Author(s):  
I. Roušar ◽  
P. Ditl
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Fixed Bed ◽  
Intraparticle Diffusion ◽  
Axial Dispersion ◽  
Particle Mass ◽  
External Particle ◽  
Conservative Scheme ◽  
Transfer Mechanisms ◽  
Dynamic Criteria

A model has been formulated for multicomponent isobaric adsorption in fixed bed columns. The following mass transfer mechanisms were used: convective flow, axial dispersion, external particle mass transfer and intraparticle diffusion. Analysis was applied on the system of governing equations to obtain controlling dimensionless criteria for the fixed bed adsorber. The derived criteria can be divided into three groups, namely: main dynamic criteria, equilibrium criteria and multicomponent dynamic criteria, their physical meaning has been discussed. The system of equations has been numerically solved using a finite difference method with an implicit conservative scheme. On the basis of this model a numerical simulation has been made to determine the influence of external particle mass transfer, axial dispersion, intraparticle diffusion and adsorption equilibrium on adsorber dynamics.

Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

2009 ◽  
Vol 9 (6) ◽  
pp. 661-670 ◽  
Author(s):  
S. P. Dubey ◽  
K. Gopal
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Fixed Bed ◽  
Entropy Change ◽  
Spectroscopic Technique ◽  
Fixed Bed Column ◽  
Chromium Vi ◽  
Fixed Bed Adsorption ◽  
Optimal Column ◽  
Eucalyptus Bark

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.

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