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The Use of Modeling for Characterization of Membranes

D.L. Oatley-Radcliffe, P.M. Williams, N. Hilal, Nidal Hilal

Membrane Characterization, Pages: 359 - 378

Swansea University Author: Nidal Hilal

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DOI (Published version): 10.1016/B978-0-444-63776-5.00016-4

Abstract

The typical characteristics of membranes can be estimated directly from experimental data. To successfully characterize membranes using such techniques a representative model of the membrane process must be used that is simple enough for solution yet detailed enough to capture the key characteristic...

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Published in: Membrane Characterization
ISBN: 9780444637765
Published: Elsevier 2017
URI: https://cronfa.swan.ac.uk/Record/cronfa29498
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first_indexed 2016-08-08T13:10:03Z
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spelling 2018-04-30T14:24:30.1711436 v2 29498 2016-08-08 The Use of Modeling for Characterization of Membranes 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 2016-08-08 FGSEN The typical characteristics of membranes can be estimated directly from experimental data. To successfully characterize membranes using such techniques a representative model of the membrane process must be used that is simple enough for solution yet detailed enough to capture the key characteristics required. Two cases have been considered where the membrane process has been characterized. The first case is for large pore membranes where slurry filtration or gel layers form on the membrane surface, which is quite typical for microfiltration and ultrafiltration processes. A simple model was described that considers the membrane resistance and the specific cake resistance. The experimental data required are outlined and worked examples are provided that show how to manipulate the data to capture the membrane characteristics. More intensive models that describe the complex microhydrodynamics and interfacial events occurring at the surface and within the small pore membranes are also described. These models are shown to be far more complex and the solution methodologies are not trivial. However, these methods are capable of providing characterization of the pore radius and electrical properties of the membrane at almost atomic scale dimensions. For the case of pore size characterization a simple analytical equation is available and a worked example is provided along with a narrative on best practice. The characterization of electrical properties is far more complicated and involves the solution of nonlinear differential equations. A solution methodology has been explained and tips on best practices have been provided. Overall, membrane characterization using models and experimental data has been demonstrated and can be used for the evaluation of novel membranes or as a guide for the scientist or engineer in the design, scale-up, and optimization of new membrane processes. Book chapter Membrane Characterization 359 378 Elsevier 9780444637765 Cake filtration; Characterisation; Modeling; Nernst–Planck equation 31 12 2017 2017-12-31 10.1016/B978-0-444-63776-5.00016-4 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2018-04-30T14:24:30.1711436 2016-08-08T09:21:37.0085637 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised D.L. Oatley-Radcliffe 1 P.M. Williams 2 N. Hilal 3 Nidal Hilal 4
title The Use of Modeling for Characterization of Membranes
spellingShingle The Use of Modeling for Characterization of Membranes
Nidal Hilal
title_short The Use of Modeling for Characterization of Membranes
title_full The Use of Modeling for Characterization of Membranes
title_fullStr The Use of Modeling for Characterization of Membranes
title_full_unstemmed The Use of Modeling for Characterization of Membranes
title_sort The Use of Modeling for Characterization of Membranes
author_id_str_mv 3acba771241d878c8e35ff464aec0342
author_id_fullname_str_mv 3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
author Nidal Hilal
author2 D.L. Oatley-Radcliffe
P.M. Williams
N. Hilal
Nidal Hilal
format Book chapter
container_title Membrane Characterization
container_start_page 359
publishDate 2017
institution Swansea University
isbn 9780444637765
doi_str_mv 10.1016/B978-0-444-63776-5.00016-4
publisher Elsevier
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description The typical characteristics of membranes can be estimated directly from experimental data. To successfully characterize membranes using such techniques a representative model of the membrane process must be used that is simple enough for solution yet detailed enough to capture the key characteristics required. Two cases have been considered where the membrane process has been characterized. The first case is for large pore membranes where slurry filtration or gel layers form on the membrane surface, which is quite typical for microfiltration and ultrafiltration processes. A simple model was described that considers the membrane resistance and the specific cake resistance. The experimental data required are outlined and worked examples are provided that show how to manipulate the data to capture the membrane characteristics. More intensive models that describe the complex microhydrodynamics and interfacial events occurring at the surface and within the small pore membranes are also described. These models are shown to be far more complex and the solution methodologies are not trivial. However, these methods are capable of providing characterization of the pore radius and electrical properties of the membrane at almost atomic scale dimensions. For the case of pore size characterization a simple analytical equation is available and a worked example is provided along with a narrative on best practice. The characterization of electrical properties is far more complicated and involves the solution of nonlinear differential equations. A solution methodology has been explained and tips on best practices have been provided. Overall, membrane characterization using models and experimental data has been demonstrated and can be used for the evaluation of novel membranes or as a guide for the scientist or engineer in the design, scale-up, and optimization of new membrane processes.
published_date 2017-12-31T03:35:53Z
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score 11.014067

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