Please use this identifier to cite or link to this item:
Title: Cake formation of bidisperse suspensions in dead-end microfiltration
Authors: Han, Qi
Trinh, Thien An
Chew, Jia Wei
Keywords: Engineering::Environmental engineering
Issue Date: 2019
Source: Han, Q., Trinh, T. A. & Chew, J. W. (2019). Cake formation of bidisperse suspensions in dead-end microfiltration. Journal of Membrane Science, 577, 31-40.
Project: MOE2014-T2-2-074
Journal: Journal of Membrane Science
Abstract: The evolution of the cake during dead-end microfiltration of different compositions of bidisperse feeds was investigated using network modeling and three-dimensional (3D) optical coherence tomography (OCT) imaging. The foulant particles were latex of two different sizes (namely, 3 and 5 µm) and the membrane was polycarbonate track-etched with nominal diameter of 2 µm. The results from the network model indicate that (i) the deposition of the smaller particles on the non-porous area was reduced by the presence of larger particles, whereas that of the larger particles was not affected by the concentration of the smaller ones; and (ii) monodisperse small particles gave a greater specific cake resistance than monodisperse large particles, and the specific cake resistance of the bidisperse mixture can only be reduced with a sufficient proportion of larger particles. OCT results substantiated the model by revealing that (i) bidisperse feeds tended to form homogeneous cakes, but the presence of a higher concentration of large particles led to heterogeneous cakes; (ii) the presence of a lower concentration of larger particles enhanced clustering, while a higher concentration reduced that; and (iii) in the longer-term filtration, the monodisperse feed of small particles dynamically deposited and detach continuously, while the bidisperse feed with the highest concentration of larger particles exhibited negligible deposition and detachment.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2019.01.048
Rights: © 2019 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:IGS Journal Articles
NEWRI Journal Articles
SCBE Journal Articles

Citations 20

Updated on Aug 31, 2021

Citations 20

Updated on Aug 31, 2021

Page view(s)

Updated on Nov 28, 2021

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.