Mass transfer intensification in an annular electrochemical reactor by an inert fixed bed under various hydrodynamic conditions

2011 ◽  
Vol 50 (11-12) ◽  
pp. 1122-1127 ◽  
Author(s):  
G.H. Sedahmed ◽  
Y.A. El-Taweel ◽  
A.H. Konsowa ◽  
M.H. Abdel-Aziz
Keyword(s):  
Mass Transfer ◽  
Fixed Bed ◽  
Electrochemical Reactor ◽  
Hydrodynamic Conditions ◽  
Mass Transfer Intensification

Mass transfer behaviour of a flow-by fixed bed electrochemical reactor under different hydrodynamic conditions

2003 ◽  
Vol 91 (1) ◽  
pp. 33-44 ◽  
Author(s):  
E.A Soltan ◽  
S.A Nosier ◽  
A.Y Salem ◽  
I.A.S Mansour ◽  
G.H Sedahmed
Keyword(s):  
Mass Transfer ◽  
Fixed Bed ◽  
Electrochemical Reactor ◽  
Hydrodynamic Conditions

Liquid−Solid Mass Transfer at a Fixed Bed of Lessing Rings, in Relation to Electrochemical Reactor Design

2005 ◽  
Vol 44 (15) ◽  
pp. 5761-5767 ◽  
Author(s):  
I. Hassan ◽  
R. R. Zahran ◽  
I. S. Mansour ◽  
G. H. Sedahmed
Keyword(s):  
Mass Transfer ◽  
Fixed Bed ◽  
Reactor Design ◽  
Electrochemical Reactor ◽  
Solid Mass

Heat and Mass Transfer Intensification in Solid Sorption Systems

1998 ◽  
Vol 5 (2) ◽  
pp. 111-125 ◽  
Author(s):  
L. E. Kanonchik ◽  
Leonid L. Vasiliev, Jr. ◽  
Valery A. Babenko
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Sorption Systems ◽  
Mass Transfer Intensification

Modeling mass transfer and substrate utilization in the boundary layer of biofilm systems

1998 ◽  
Vol 37 (4-5) ◽  
pp. 139-147 ◽  
Author(s):  
Harald Horn ◽  
Dietmar C. Hempel
Keyword(s):  
Boundary Layer ◽  
Mass Transfer ◽  
Reynolds Number ◽  
Film Theory ◽  
Substrate Utilization ◽  
The Other ◽  
Concentration Profiles ◽  
Hydrodynamic Conditions ◽  
Time Axis ◽  
Transfer Coefficients

The use of microelectrodes in biofilm research allows a better understanding of intrinsic biofilm processes. Little is known about mass transfer and substrate utilization in the boundary layer of biofilm systems. One possible description of mass transfer can be obtained by mass transfer coefficients, both on the basis of the stagnant film theory or with the Sherwood number. This approach is rather formal and not quite correct when the heterogeneity of the biofilm surface structure is taken into account. It could be shown that substrate loading is a major factor in the description of the development of the density. On the other hand, the time axis is an important factor which has to be considered when concentration profiles in biofilm systems are discussed. Finally, hydrodynamic conditions become important for the development of the biofilm surface when the Reynolds number increases above the range of 3000-4000.

Modeling of aerated upflow fixed bed reactors for nitrification

1999 ◽  
Vol 39 (4) ◽  
pp. 85-92 ◽  
Author(s):  
J. Behrendt
Keyword(s):  
Mathematical Model ◽  
Mass Transfer ◽  
Liquid Phase ◽  
Gas Phase ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Bulk Liquid ◽  
Initial Value ◽  
Fixed Bed Reactors ◽  
Number Of Cells

A mathematical model for nitrification in an aerated fixed bed reactor has been developed. This model is based on material balances in the bulk liquid, gas phase and in the biofilm area. The fixed bed is divided into a number of cells according to the reduced remixing behaviour. A fixed bed cell consists of 4 compartments: the support, the gas phase, the bulk liquid phase and the stagnant volume containing the biofilm. In the stagnant volume the biological transmutation of the ammonia is located. The transport phenomena are modelled with mass transfer formulations so that the balances could be formulated as an initial value problem. The results of the simulation and experiments are compared.

Design methodology for mass transfer-enhanced large-scale electrochemical reactor for CO2 reduction

2021 ◽  
pp. 130265
Author(s):  
Byungchan Jung ◽  
Seongho Park ◽  
Chulwan Lim ◽  
Woonghee Lee ◽  
Youngsub Lim ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Design Methodology ◽  
Large Scale ◽  
Co2 Reduction ◽  
Electrochemical Reactor
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