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 HARUN^1,2*, AHMAD NAZREEN AHMAD ISMAIL^1,2 & NOOR HASLIZA KAMARUDIN^1,2

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