Sains Malaysiana 48(7)(2019):
1529–1537
http://dx.doi.org/10.17576/jsm-2019-4807-22
Morphology and Physical
Properties of Ceramic Hollow Fibre Membrane: Effect of Different Bore Fluid
Flow Rates
(Sifat Morfologi dan
Fizikal Membran Serabut Berongga Seramik: Kesan Perbezaan Kadar Aliran Larik
Cecair)
SITI SALWA ALIAS1, ZAWATI HARUN1,2*, AHMAD NAZREEN AHMAD ISMAIL1,2 & NOOR HASLIZA KAMARUDIN1,2
1Advanced Manufacturing
and Materials Centre (AMMC), Institute Integrated Engineering (I2E), Universiti
Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor Darul Takzim, Malaysia
2Department of Materials
and Design Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti
Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor Darul Takzim, Malaysia
Received:
6 November 2018/Accepted: 9 April 2019
ABSTRACT
The study on ceramic
hollow fibre membrane (CHFM) has been extensively explored.
In this study, the CHFM was fabricated via extrusion
combined with phase inversion and sintering method using silica, alumina with
polyethersulfone binder and N-Methyl-2-pyrrolidone solvent at different bore
fluid flow rates (10, 15 and 20 mL min-1) and sintered (1200°C). The CHFM extruded at a flow rate of 10 mL min-1 and
sintered (BF10-B) showed the good porous cross-sectional hollow
surface compared to the dense agglomerated surface of BF15-B
and BF20-B. The highest Rq (82.1 μm) and Ra (67.8
μm) were obtained from BF10-B based on topography
analysis which corresponded to the higher pore entrances of the membrane. The
porosity decreased inversely proportional with the density as the bore fluid
flow rate increased confirming that the suppression of un-solidified particles
in the inner region cannot occur completely at a high bore fluid flow rate and
produced dense membrane. The fabricated CHFM in this study has the
broad potential to be applied as a membrane for water separation since it meets
the minimum requirement of a commercial ceramic membrane.
Keywords: Alumina; bore
fluid; ceramic membrane; flow rate; silica
ABSTRAK
Kajian membran serabut
seramik (CHFM) telah diterokai secara meluas. Dalam kajian ini, CHFM dibuat melalui penyemperitan yang digabungkan dengan penyongsang
fasa dan kaedah pensinteran dengan menggunakan silika, alumina dengan pengikat polietersulfon
dan pelarut N-Metil-2-pirolidon pada kadar larik cecair yang berbeza (10, 15
dan 20 mL min-1) dan disinter (1200°C). CHFM yang
diekstrusi pada kadar aliran 10 mL min-1 dan disinter (BF10-B)
menunjukkan permukaan keratan rentas berongga yang baik berbanding dengan BF15-B
dan BF20-B yang mempunyai permukaan padat dan bergumpal.
Nilai Rq tertinggi (82.1 μm) dan Ra (67.8 μm) diperoleh daripada BF10-B
berdasarkan analisis topografi menunjukkan bukaan liang membran yang tinggi.
Keliangan yang berkurangan berkadar songsang dengan ketumpatan kadar larik
cecair yang meningkat mengesahkan bahawa penekanan zarah yang bersatu di
kawasan dalam tidak dapat berlaku sepenuhnya pada kadar larik cecair yang
tinggi dan menghasilkan membran yang padat. CHFM yang
dibuat dalam kajian ini berpotensi untuk digunakan sebagai membran untuk
penapisan air kerana ia memenuhi keperluan minimum membran seramik komersial.
Kata kunci: Alumina; kadar aliran; larik cecair; membran seramik;
silica
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*Corresponding
author; email: zawati@uthm.edu.my
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