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Home >Foods and Raw Materials > Archive > Volume 1, Issue 1, 2013 > Intensification of Ultrafiltration Concentrating by the Separation of the Concentration Boundary Layer
ISSN 2308-4057 (Print),
ISSN 2310-9599 (Online)

Intensification of Ultrafiltration Concentrating by the Separation of the Concentration Boundary Layer

B.A. Lobasenko a
Affiliation
a Kemerovo State University
Copyright ©Lobasenko et al. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0. (http://creativecommons.org/licenses/by/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material for any purpose, even commercially, provided the original work is properly cited and states its license.
DOI: http://doi.org/10.12737/1560
Abstract
The possibility of intensifying the ultrafiltration concentrating of food substance solutions by the separation of the near-membrane flow part that comprises the concentration boundary layer (or diffusion layer) enriched by a useful component has been investigated in this study. A mathematical model of the longitudinal development of polarization on a membrane with consideration of its selectivity (rejection coefficient) has been proposed. The efficiency of the separation of the near-membrane layer has theoretically been estimated on the basis of this model. Some constructions of membrane modules with the separation of the near-membrane layer have been proposed. Experiments have shown that the proposed method allows the concentrate to be enriched in the continuous-flow module by 9‒10%, which is much higher than for the traditional concentrating process. The calculated concentration coefficients are in good agreement with experimental values.
Keywords
ultrafiltration, concentrating, intensification, concentration polarization, rejection coefficient, concentration coefficient.
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