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Vacuum assisted removal of volatile to semi volatile organic contaminants from water using hollow fiber membrane contactors. II: A hybrid numerical-analytical modeling approach

McDermott, Christopher Ian and Tarafder, Shamsul Abedin and Kolditz, Olaf and Schüth, Christoph (2007):
Vacuum assisted removal of volatile to semi volatile organic contaminants from water using hollow fiber membrane contactors. II: A hybrid numerical-analytical modeling approach.
In: Journal of Membrane Science, Elsevier, pp. 17-28, 292, (1-2), ISSN 03767388, DOI: 10.1016/j.memsci.2007.01.009, [Online-Edition: https://www.sciencedirect.com/science/article/pii/S037673880...],
[Article]

Abstract

Applying a new hybrid numerical and analytical approach in the finite element simulator RockFlow/GeoSys for hydraulic flow and mass transport, the efficiency of the removal of organic contaminants from water using a microporous polypropylene hollow fiber membrane module (HFM) was accurately modeled for a large range of operating conditions. The modeling results were validated against 177 experimental measurements under a wide range of operating conditions for 12 organic compounds with different diffusion coefficients and a wide variety of Henry's law constants, from Naphthalene at circa 0.017 to 1,1-dichloroethene with circa 1.19. The hybrid numerical analytical approach enables prediction of the removal efficiencies within a few minutes, whereas a pure numerical approach would require several hours to days due to numerical stability controls. The input parameters for the model are defined by the geometry of the HFM and the operating conditions, no empirical formulations are applied. This model allows the investigation of the main factors controlling the removal characteristics, e.g., the dependency on Henry's law coefficient, gas side diffusional resistance, and aqueous diffusion limitation, and also enables the efficient design of further organic removal systems based on the HFM technology. © 2007 Elsevier B.V. All rights reserved.

Item Type: Article
Erschienen: 2007
Creators: McDermott, Christopher Ian and Tarafder, Shamsul Abedin and Kolditz, Olaf and Schüth, Christoph
Title: Vacuum assisted removal of volatile to semi volatile organic contaminants from water using hollow fiber membrane contactors. II: A hybrid numerical-analytical modeling approach
Language: English
Abstract:

Applying a new hybrid numerical and analytical approach in the finite element simulator RockFlow/GeoSys for hydraulic flow and mass transport, the efficiency of the removal of organic contaminants from water using a microporous polypropylene hollow fiber membrane module (HFM) was accurately modeled for a large range of operating conditions. The modeling results were validated against 177 experimental measurements under a wide range of operating conditions for 12 organic compounds with different diffusion coefficients and a wide variety of Henry's law constants, from Naphthalene at circa 0.017 to 1,1-dichloroethene with circa 1.19. The hybrid numerical analytical approach enables prediction of the removal efficiencies within a few minutes, whereas a pure numerical approach would require several hours to days due to numerical stability controls. The input parameters for the model are defined by the geometry of the HFM and the operating conditions, no empirical formulations are applied. This model allows the investigation of the main factors controlling the removal characteristics, e.g., the dependency on Henry's law coefficient, gas side diffusional resistance, and aqueous diffusion limitation, and also enables the efficient design of further organic removal systems based on the HFM technology. © 2007 Elsevier B.V. All rights reserved.

Journal or Publication Title: Journal of Membrane Science
Volume: 292
Number: 1-2
Publisher: Elsevier
Uncontrolled Keywords: Hollow fiber membrane,Mass transfer resistance,Organic contaminants,Vacuum stripping,Water treatment
Divisions: 11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Hydrogeology
11 Department of Materials and Earth Sciences
Date Deposited: 17 Apr 2018 12:18
DOI: 10.1016/j.memsci.2007.01.009
Official URL: https://www.sciencedirect.com/science/article/pii/S037673880...
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