Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry

Han，Qi1,2,3; Trinh，Thien An1,2; Tanis-Kanbur，Melike Begum1,2,3; Li，Weiyi4; Chew，Jia Wei1,2

2019

10.1016/j.memsci.2019.117588

JOURNAL OF MEMBRANE SCIENCE   影响因子和分区

0376-7388

1873-3123

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.

Internal fouling Membrane fouling Microfiltration Pore constriction Pore size distribution

SCI ; EI

英语

其他

Economic Development Board - Singapore[] ; GlaxoSmithKline[] ; GlaxoSmithKline Australia[]

Engineering ; Polymer Science

Engineering, Chemical ; Polymer Science

WOS:000501804600008

Elsevier B.V.

20194507631271

Atomic force microscopy ; Mammals ; Membrane fouling ; Membranes ; Optical tomography ; Pore size ; Size distribution ; Tomography

Optical Devices and Systems:741.3 ; Imaging Techniques:746 ; Chemical Operations:802.3 ; Mathematical Statistics:922.2 ; Materials Science:951

CHEMISTRY

2-s2.0-85074419892

Scopus

1.School of Chemical and Biomedical EngineeringNanyang Technological University,Singapore
2.Singapore Membrane Technology CentreNanyang Environment and Water Research InstituteNanyang Technological University,Singapore
3.Interdisciplinary Graduate SchoolNanyang Technological University,Singapore
4.School of Environmental Science & EngineeringSouthern University of Science and Technology,Shenzhen,China

Han，Qi,Trinh，Thien An,Tanis-Kanbur，Melike Begum,et al. Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry[J]. JOURNAL OF MEMBRANE SCIENCE,2019,595.

Han，Qi,Trinh，Thien An,Tanis-Kanbur，Melike Begum,Li，Weiyi,&Chew，Jia Wei.(2019).Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry.JOURNAL OF MEMBRANE SCIENCE,595.

Han，Qi,et al."Assessing internal fouling during microfiltration using optical coherence tomography and evapoporometry".JOURNAL OF MEMBRANE SCIENCE 595(2019).