Influence of foulant particle shape on membrane fouling in dead-end microfiltration
In view of the proliferating applications involving membrane-based separation, the inevitable membrane fouling phenomenon is well-studied. However, the influence of foulant shape on membrane fouling remained incompletely understood. Therefore, the goal of this study was to investigate the fouling be...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/161957 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-161957 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1619572022-09-27T06:28:44Z Influence of foulant particle shape on membrane fouling in dead-end microfiltration Lay, Huang Teik Wang, Rong Chew, Jia Wei School of Chemical and Biomedical Engineering School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Environmental engineering Membrane Fouling Microfiltration In view of the proliferating applications involving membrane-based separation, the inevitable membrane fouling phenomenon is well-studied. However, the influence of foulant shape on membrane fouling remained incompletely understood. Therefore, the goal of this study was to investigate the fouling behaviors by three different shapes of latex particles (namely, peanut, pear and sphere) with similar mean diameters in the range of 3.5–3.8 μm. External and internal fouling were studied using polycarbonate track-etched (PCTE) membranes with nominal pore sizes of 2 and 8 μm, respectively. Flux data were taken, and fouling models, optical coherence tomography (OCT) and field-emission scanning electron microscope were employed. Regarding external membrane fouling, the sphere-shaped particles displayed the worst flux decline, which is tied to the greatest tendency to deposit on the membrane pores, as revealed by the network fouling model. As for internal fouling, the flux decline curves were more similar among the particle types. The fouling model shows the sphere-shaped particles gave the densest internal cake, which caused slightly steeper flux decline in the latter part of the filtration. Furthermore, OCT indicates that the highest fouling fractions at 7.5 μm below the membrane were exhibited for the peanut-shaped particles, which is due to the preferential vertical orientation resulting in deeper penetration. Results here highlight the non-negligible influence of foulant particle shape, which warrants further understanding and accounting for membrane fouling studies. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) We acknowledge funding from the A*STAR (Singapore) Advanced Manufacturing and Engineering (AME) under its Pharma Innovation Programme Singapore (PIPS) program (A20B3a0070), A*STAR (Singapore) Advanced Manufacturing and Engineering (AME) under its Individual Research Grant (IRG) program (A2083c0049), the Singapore Ministry of Education Academic Research Fund Tier 1 Grant (2019-T1-002-065; RG100/19) and the Singapore Ministry of Education Academic Research Fund Tier 2 Grant (MOE-MOET2EP10120-0001). 2022-09-27T06:28:44Z 2022-09-27T06:28:44Z 2022 Journal Article Lay, H. T., Wang, R. & Chew, J. W. (2022). Influence of foulant particle shape on membrane fouling in dead-end microfiltration. Journal of Membrane Science, 647, 120265-. https://dx.doi.org/10.1016/j.memsci.2022.120265 0376-7388 https://hdl.handle.net/10356/161957 10.1016/j.memsci.2022.120265 2-s2.0-85123106362 647 120265 en A20B3a0070 A2083c0049 2019-T1-002-065 RG100/19 MOE-MOET2EP10120-0001 Journal of Membrane Science © 2022 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::Environmental engineering Membrane Fouling Microfiltration |
spellingShingle |
Engineering::Environmental engineering Membrane Fouling Microfiltration Lay, Huang Teik Wang, Rong Chew, Jia Wei Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
description |
In view of the proliferating applications involving membrane-based separation, the inevitable membrane fouling phenomenon is well-studied. However, the influence of foulant shape on membrane fouling remained incompletely understood. Therefore, the goal of this study was to investigate the fouling behaviors by three different shapes of latex particles (namely, peanut, pear and sphere) with similar mean diameters in the range of 3.5–3.8 μm. External and internal fouling were studied using polycarbonate track-etched (PCTE) membranes with nominal pore sizes of 2 and 8 μm, respectively. Flux data were taken, and fouling models, optical coherence tomography (OCT) and field-emission scanning electron microscope were employed. Regarding external membrane fouling, the sphere-shaped particles displayed the worst flux decline, which is tied to the greatest tendency to deposit on the membrane pores, as revealed by the network fouling model. As for internal fouling, the flux decline curves were more similar among the particle types. The fouling model shows the sphere-shaped particles gave the densest internal cake, which caused slightly steeper flux decline in the latter part of the filtration. Furthermore, OCT indicates that the highest fouling fractions at 7.5 μm below the membrane were exhibited for the peanut-shaped particles, which is due to the preferential vertical orientation resulting in deeper penetration. Results here highlight the non-negligible influence of foulant particle shape, which warrants further understanding and accounting for membrane fouling studies. |
author2 |
School of Chemical and Biomedical Engineering |
author_facet |
School of Chemical and Biomedical Engineering Lay, Huang Teik Wang, Rong Chew, Jia Wei |
format |
Article |
author |
Lay, Huang Teik Wang, Rong Chew, Jia Wei |
author_sort |
Lay, Huang Teik |
title |
Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
title_short |
Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
title_full |
Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
title_fullStr |
Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
title_full_unstemmed |
Influence of foulant particle shape on membrane fouling in dead-end microfiltration |
title_sort |
influence of foulant particle shape on membrane fouling in dead-end microfiltration |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/161957 |
_version_ |
1745574656639762432 |