Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry

The internal fouling of membranes is typically presumed and inferred, but the direct characterization of representative samples is challenging. This study targeted to assess internal fouling using the Optical Coherence Tomography (OCT) and Evapoporometry (EP) techniques for real-time monitoring duri...

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Main Authors: Han, Qi, Trinh, Thien An, Tanis-Kanbur, Melike Begum, Li, Weiyi, Chew, Jia Wei
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/155521
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1555212022-03-07T07:14:53Z Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry Han, Qi Trinh, Thien An Tanis-Kanbur, Melike Begum Li, Weiyi Chew, Jia Wei School of Chemical and Biomedical Engineering Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Bioengineering Membrane Fouling Internal Fouling The internal fouling of membranes is typically presumed and inferred, but the direct characterization of representative samples is challenging. This study targeted to assess internal fouling using the Optical Coherence Tomography (OCT) and Evapoporometry (EP) techniques for real-time monitoring during filtration and off-line measurement of the pore size distributions (PSDs) of the fouled membranes, respectively. The results were validated by atomic force microscopy (AFM) measurements and also the three-mechanism fouling model. The foulant used was the well-studied bovine serum albumin (BSA), while the membranes were three commercially available polymeric microfiltration membranes with similar nominal pore sizes and porosities. Although the OCT affirmed the progressive worsening of internal fouling in real-time, the quantitative comparison of the extents of internal fouling among the three membranes was not possible. As for EP, it was able to quantitatively compare the pore size distributions and average pore diameters to ascertain the different extents of internal fouling. The phenomenological model available was effective in quantitatively comparing the extents of pore-constriction among the three membranes, while AFM tied the worst internal fouling to the most attractive BSA-membrane affinity. More in-depth understanding of internal fouling is warranted to not only recommend better membranes but also facilitate the advancement of models. Economic Development Board (EDB) We acknowledge funding from the GSK (GlaxoSmithKline) – EDB (Economic Development Board - Singapore) Trust Fund. 2022-03-07T07:14:53Z 2022-03-07T07:14:53Z 2020 Journal Article Han, Q., Trinh, T. A., Tanis-Kanbur, M. B., Li, W. & Chew, J. W. (2020). Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry. Journal of Membrane Science, 595, 117588-. https://dx.doi.org/10.1016/j.memsci.2019.117588 0376-7388 https://hdl.handle.net/10356/155521 10.1016/j.memsci.2019.117588 2-s2.0-85074419892 595 117588 en Journal of Membrane Science © 2019 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Bioengineering
Membrane Fouling
Internal Fouling
spellingShingle Engineering::Bioengineering
Membrane Fouling
Internal Fouling
Han, Qi
Trinh, Thien An
Tanis-Kanbur, Melike Begum
Li, Weiyi
Chew, Jia Wei
Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
description The internal fouling of membranes is typically presumed and inferred, but the direct characterization of representative samples is challenging. This study targeted to assess internal fouling using the Optical Coherence Tomography (OCT) and Evapoporometry (EP) techniques for real-time monitoring during filtration and off-line measurement of the pore size distributions (PSDs) of the fouled membranes, respectively. The results were validated by atomic force microscopy (AFM) measurements and also the three-mechanism fouling model. The foulant used was the well-studied bovine serum albumin (BSA), while the membranes were three commercially available polymeric microfiltration membranes with similar nominal pore sizes and porosities. Although the OCT affirmed the progressive worsening of internal fouling in real-time, the quantitative comparison of the extents of internal fouling among the three membranes was not possible. As for EP, it was able to quantitatively compare the pore size distributions and average pore diameters to ascertain the different extents of internal fouling. The phenomenological model available was effective in quantitatively comparing the extents of pore-constriction among the three membranes, while AFM tied the worst internal fouling to the most attractive BSA-membrane affinity. More in-depth understanding of internal fouling is warranted to not only recommend better membranes but also facilitate the advancement of models.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Han, Qi
Trinh, Thien An
Tanis-Kanbur, Melike Begum
Li, Weiyi
Chew, Jia Wei
format Article
author Han, Qi
Trinh, Thien An
Tanis-Kanbur, Melike Begum
Li, Weiyi
Chew, Jia Wei
author_sort Han, Qi
title Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
title_short Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
title_full Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
title_fullStr Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
title_full_unstemmed Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
title_sort assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry
publishDate 2022
url https://hdl.handle.net/10356/155521
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