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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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. |
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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 |
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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. |
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School of Chemical and Biomedical Engineering |
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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 |
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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 |
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2022 |
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https://hdl.handle.net/10356/155521 |
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1726885521368547328 |