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Mass transfer

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... the environmental impact of the process. This paper is focused on the modelling of the conversion of weak organic acid salts by EDBM The different mass transfer phenomena involved in the system are first identified. A model is then established to get expressions providing the evolution of th ...
Desalination 149 (2002)

... factor controlling the decrease in organic flux with biofilm growth, as previously thought in the aerobic EMB. Keywords: Anoxic; Biofilm; Bioreactor; Mass transfer; Membrane; Toluene *Corresponding author. Presented at the International Congress on Membranes and Membrane Processes (ICOM), Toulouse ...
Desalination 149 (2002)

... the other side. Since the membranes used are hydrophobic (e.g., polypropylene, Teflon), the pores are gas filled resulting in a negligible membrane mass transfer resistance. The major resistance to gas transfer is due to the blood side mass transfer boundary layer. In this study mass transfer an ...
Desalination 148 (2002)

... purity of A for a membrane with an infinite number of sections purity of the feed stream membrane resistance recovery of component A residual of the mass transport equation mean feed velocity permeate velocity normalized permeate velocity mean velocity of the solvent stream for sub-section i mean... decreases with the concentrate velocity. The purity increases slightly with the number of sections. Keywords: Hybrid separation membranes; Mass transfer; Computational fluid dynamics; Diffusivity separation *Corresponding author. Presented at the Third Membrane Science and Technology Conference o ...
Desalination 241 (2009)

The error analysis has proved that large errors of the overall dialysis coefficient can be expected if low volumetric liquid flow rate and intensive mass transfer exist. Moreover, the effect of errors of input parameters can be eliminated to a large extent using reconciled experimental data measured.
Desalination 239 (2009)

... channel under the same potential drop, while the latter, in turn, are higher than the Sherwood numbers calculated for limiting current density. The mass transfer rate in several cases (under 2.5 V par cell pair in diluted, 7 dm3 h−1 dm−1, a stack with profiled membranes) may be 4 times highe ...
Desalination 222 (2008)

... developed based on resistance-in-series model considering the chemical potential gradient as the true driving force in which the total resistance to mass transfer is defined as the sum of the liquid, membrane and vapor resistance. The model was validated by the experimental data available in th ...
Desalination 222 (2008)

... because they are intrinsically related to the membrane resistance. The new method is equivalent to the conventional method of flux decline in mass transfer limited regime. Fouling in the thermodynamic equilibrium restricted regime can also be readily characterized with the new method b ...
Desalination 177 (2005)

... was found to fit Arrhenius equation with an activation energy of 2.95 kcal/mole which confirms the diffusion controlled nature of the reaction. Mass transfer study of the process has revealed that the data fit the dimensionless equation Sh = 89 Sc0.33.Re0.537(d/dh)-0.496. The importance of usin ...
Desalination 167 (2004)

... compound was carried out on very diluted model aqueous solutions, using membrane contactors, in two configurations: liquid–liquid and liquid–gas. Mass transfers from water to n-hexane, from water to miglyol (two solvents widely used in aromatic industry) and from water to air were studied using ...
Desalination 163 (2004)

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