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Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces
Chemical Engineering Research and Design, Volume: 159, Pages: 468 - 476
Swansea University Authors:
SAIF AL AANI, Peter Esteban , Paul Williams
, Darren Oatley-Radcliffe
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© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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DOI (Published version): 10.1016/j.cherd.2020.04.022
Abstract
Successful characterization of membranes is of paramount importance for the development and improvement of novel membranes and membrane processes. The characterisation of membrane charge is key to understanding charge interactions between the process stream and the membrane and is typically represen...
Published in: | Chemical Engineering Research and Design |
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ISSN: | 0263-8762 |
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Elsevier BV
2020
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URI: | https://cronfa.swan.ac.uk/Record/cronfa54159 |
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The characterisation of membrane charge is key to understanding charge interactions between the process stream and the membrane and is typically represented by the surface zeta potential. In a previous paper (Thomas et al., 2017), a novel technique employing an Uzigirs dip cell arrangement used in conjunction with Laser Doppler Electrophoresis was used to characterize the surface of several negatively charged membranes. In this paper, positively charged modified PTFE membranes are fabricated and the novel zeta potential measurement technique is utilised to quantify the resultant membrane charge by use of a positively charged amidine tracer particle. The amidine particles were characterised and shown to have a positive zeta potential of 12.4 mV for the experimental conditions used. A comparative analysis was made between the novel laser Doppler electrophoresis measurements and tangential streaming potential measurements for the positive membrane and the agreement was good. The phase plot and mobility-displacement were of good quality for the data set, with the surface equivalent mobility being 0.632 μmcm/Vs with R2 = 0.977. In addition, a series of experiments were conducted to explore the operating envelope and highlight the pitfalls of the technique, i.e. oppositely charged particles to the surface should not be used. Overall, this work expands the application of the novel zeta potential measurement technique to span all membrane charge types. Thus providing a real benefit to the practicing scientist or engineer by having a reliable, fast and simple zeta potential technique that uses only a very small membrane sample.</abstract><type>Journal Article</type><journal>Chemical Engineering Research and Design</journal><volume>159</volume><paginationStart>468</paginationStart><paginationEnd>476</paginationEnd><publisher>Elsevier BV</publisher><issnPrint>0263-8762</issnPrint><keywords>Membrane, Charge, Zeta potential, Positive, Electrophoresis</keywords><publishedDay>1</publishedDay><publishedMonth>7</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-07-01</publishedDate><doi>10.1016/j.cherd.2020.04.022</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2020-06-11T10:21:46.8342392</lastEdited><Created>2020-05-07T09:26:46.9096155</Created><authors><author><firstname>Matthew</firstname><surname>Walters</surname><order>1</order></author><author><firstname>SAIF</firstname><surname>AL AANI</surname><order>2</order></author><author><firstname>Peter</firstname><surname>Esteban</surname><orcid>0000-0002-0432-9941</orcid><order>3</order></author><author><firstname>Paul</firstname><surname>Williams</surname><orcid>0000-0003-0511-4659</orcid><order>4</order></author><author><firstname>Darren</firstname><surname>Oatley-Radcliffe</surname><orcid>0000-0003-4116-723X</orcid><order>5</order></author></authors><documents><document><filename>54159__17196__3d6bb543764d4eefb7f3a9cdd6af0c24.pdf</filename><originalFilename>54159.pdf</originalFilename><uploaded>2020-05-07T09:29:24.2638043</uploaded><type>Output</type><contentLength>1860152</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2021-05-04T00:00:00.0000000</embargoDate><documentNotes>© 2020. 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2020-06-11T10:21:46.8342392 v2 54159 2020-05-07 Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces d9b43d20ed77afb39906206181147376 SAIF AL AANI SAIF AL AANI true false a02e12611af008764ebda60486a59506 0000-0002-0432-9941 Peter Esteban Peter Esteban true false 3ed8f1e5d997e0fcb256fb6501605cec 0000-0003-0511-4659 Paul Williams Paul Williams true false 6dfb5ec2932455c778a5aa168c18cffd 0000-0003-4116-723X Darren Oatley-Radcliffe Darren Oatley-Radcliffe true false 2020-05-07 FGSEN Successful characterization of membranes is of paramount importance for the development and improvement of novel membranes and membrane processes. The characterisation of membrane charge is key to understanding charge interactions between the process stream and the membrane and is typically represented by the surface zeta potential. In a previous paper (Thomas et al., 2017), a novel technique employing an Uzigirs dip cell arrangement used in conjunction with Laser Doppler Electrophoresis was used to characterize the surface of several negatively charged membranes. In this paper, positively charged modified PTFE membranes are fabricated and the novel zeta potential measurement technique is utilised to quantify the resultant membrane charge by use of a positively charged amidine tracer particle. The amidine particles were characterised and shown to have a positive zeta potential of 12.4 mV for the experimental conditions used. A comparative analysis was made between the novel laser Doppler electrophoresis measurements and tangential streaming potential measurements for the positive membrane and the agreement was good. The phase plot and mobility-displacement were of good quality for the data set, with the surface equivalent mobility being 0.632 μmcm/Vs with R2 = 0.977. In addition, a series of experiments were conducted to explore the operating envelope and highlight the pitfalls of the technique, i.e. oppositely charged particles to the surface should not be used. Overall, this work expands the application of the novel zeta potential measurement technique to span all membrane charge types. Thus providing a real benefit to the practicing scientist or engineer by having a reliable, fast and simple zeta potential technique that uses only a very small membrane sample. Journal Article Chemical Engineering Research and Design 159 468 476 Elsevier BV 0263-8762 Membrane, Charge, Zeta potential, Positive, Electrophoresis 1 7 2020 2020-07-01 10.1016/j.cherd.2020.04.022 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-06-11T10:21:46.8342392 2020-05-07T09:26:46.9096155 Matthew Walters 1 SAIF AL AANI 2 Peter Esteban 0000-0002-0432-9941 3 Paul Williams 0000-0003-0511-4659 4 Darren Oatley-Radcliffe 0000-0003-4116-723X 5 54159__17196__3d6bb543764d4eefb7f3a9cdd6af0c24.pdf 54159.pdf 2020-05-07T09:29:24.2638043 Output 1860152 application/pdf Accepted Manuscript true 2021-05-04T00:00:00.0000000 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/ |
title |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
spellingShingle |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces SAIF AL AANI Peter Esteban Paul Williams Darren Oatley-Radcliffe |
title_short |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
title_full |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
title_fullStr |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
title_full_unstemmed |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
title_sort |
Laser Doppler electrophoresis and electro-osmotic flow mapping for the zeta potential measurement of positively charged membrane surfaces |
author_id_str_mv |
d9b43d20ed77afb39906206181147376 a02e12611af008764ebda60486a59506 3ed8f1e5d997e0fcb256fb6501605cec 6dfb5ec2932455c778a5aa168c18cffd |
author_id_fullname_str_mv |
d9b43d20ed77afb39906206181147376_***_SAIF AL AANI a02e12611af008764ebda60486a59506_***_Peter Esteban 3ed8f1e5d997e0fcb256fb6501605cec_***_Paul Williams 6dfb5ec2932455c778a5aa168c18cffd_***_Darren Oatley-Radcliffe |
author |
SAIF AL AANI Peter Esteban Paul Williams Darren Oatley-Radcliffe |
author2 |
Matthew Walters SAIF AL AANI Peter Esteban Paul Williams Darren Oatley-Radcliffe |
format |
Journal article |
container_title |
Chemical Engineering Research and Design |
container_volume |
159 |
container_start_page |
468 |
publishDate |
2020 |
institution |
Swansea University |
issn |
0263-8762 |
doi_str_mv |
10.1016/j.cherd.2020.04.022 |
publisher |
Elsevier BV |
document_store_str |
1 |
active_str |
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description |
Successful characterization of membranes is of paramount importance for the development and improvement of novel membranes and membrane processes. The characterisation of membrane charge is key to understanding charge interactions between the process stream and the membrane and is typically represented by the surface zeta potential. In a previous paper (Thomas et al., 2017), a novel technique employing an Uzigirs dip cell arrangement used in conjunction with Laser Doppler Electrophoresis was used to characterize the surface of several negatively charged membranes. In this paper, positively charged modified PTFE membranes are fabricated and the novel zeta potential measurement technique is utilised to quantify the resultant membrane charge by use of a positively charged amidine tracer particle. The amidine particles were characterised and shown to have a positive zeta potential of 12.4 mV for the experimental conditions used. A comparative analysis was made between the novel laser Doppler electrophoresis measurements and tangential streaming potential measurements for the positive membrane and the agreement was good. The phase plot and mobility-displacement were of good quality for the data set, with the surface equivalent mobility being 0.632 μmcm/Vs with R2 = 0.977. In addition, a series of experiments were conducted to explore the operating envelope and highlight the pitfalls of the technique, i.e. oppositely charged particles to the surface should not be used. Overall, this work expands the application of the novel zeta potential measurement technique to span all membrane charge types. Thus providing a real benefit to the practicing scientist or engineer by having a reliable, fast and simple zeta potential technique that uses only a very small membrane sample. |
published_date |
2020-07-01T04:07:30Z |
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1763753539015802880 |
score |
11.021648 |