scholarly journals Effect of Sintering Temperature on the Fabrication of Ceramic Hollow Fibre Membrane

2016 ◽  
Vol 15 (2) ◽  
pp. 1
Author(s):  
Syafikah H Paiman ◽  
Mukhlis A A Rahman ◽  
Mohd Hafiz Dzarfan Othman ◽  
Siti Halimah Ahmad
Keyword(s):  
Mechanical Strength ◽  
Ceramic Membrane ◽  
Sintering Temperature ◽  
Pure Water ◽  
Water Flux ◽  
Hollow Fibre ◽  
Polymeric Membrane ◽  
Asymmetric Structure ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane

Recently, ceramic membrane gradually acquired attention from researchers due to the advantages of ceramic’s behavior, which allows the ceramic to overcome the limitations of using polymeric membrane. This work focused on the fabrication of ceramic hollow fibre membrane from a ceramic suspension solution containing yttria-stabilized zirconia (YSZ), polyethersulfone (PESf), N-methylpyrrolidone (NMP) and dispersants using combined phase inversion sintering technique. In this study, ceramic hollow membrane precursors were sintered at different sintering temperature ranging between 1250°C and 1400°C. The influences of sintering temperature on the microstructure, porosity and pore size distribution, mechanical strength and pure water flux of ceramic hollow fibre membrane were investigated in detail. The results show an asymmetric structure of YSZ hollow fibre membrane containing finger-like structure and sponge-like structure. The sponge-like structure can serve as a separation layer, while finger-like-structure performs as a supported layer. It is observed that sintering process caused a significant densification of sponge-like structure (microstructure). Sintering at temperature 1400°C shows the formation of non- interconnected voids. Sintering at 1300°C is sufficient enough having a mechanical strength of 227.55MPa with an apparent porosity of 45.09% and PWF of 118.39L.m¯².hr¯¹.

INVESTIGATION ON THE EFFECT OF SINTERING TEMPERATURE ON KAOLIN HOLLOW FIBRE MEMBRANE FOR WATER APPLICATION

2017 ◽  
Vol 79 (1-2) ◽  
Author(s):  
Nur Hamizah Mohtor ◽  
Mohd Hafiz Dzarfan Othman ◽  
A. F. Ismail ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Ceramic Membrane ◽  
Sintering Temperature ◽  
Low Cost ◽  
Water Flux ◽  
Ceramic Materials ◽  
Skin Layer ◽  
Hollow Fibre ◽  
Polymeric Membrane ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane

Ceramic membrane has the ability to surpass the utilisation of polymeric membrane in the application that requiring high temperature and pressure condition, as well as harsh chemical environment. Due to the high cost of ceramic membrane, various attempts have been made to use low cost ceramic materials as alternatives to well-known expensive metal oxides. In this work, local Malaysian kaolin has been chosen as ceramic material since it is inexpensive and easily available in Malaysia for the preparation of low cost hollow fibre ceramic membrane. The aim of this work is to study the effect of sintering temperature on the morphology, properties, and performance of kaolin hollow fibre membrane by sintering the prepared precursor at different target temperatures ranging from 1300°C to 1500 °C. The experimental results demonstrated that the kaolin membrane sintered at 1400 °C has influenced the formation of sufficient dense sponge-like structure of skin layer, resulting in good water flux of 74 L/h.m2.

THE FEASIBILITY OF KAOLIN AS MAIN MATERIAL FOR LOW COST POROUS CERAMIC HOLLOW FIBRE MEMBRANE PREPARED USING COMBINED PHASE INVERSION AND SINTERING TECHNIQUE

2017 ◽  
Vol 79 (1-2) ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
Mohd Hafiz Dzarfan Othman ◽  
A. F. Ismail ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar
Keyword(s):  
Phase Inversion ◽  
Low Cost ◽  
Pure Water ◽  
Porous Ceramic ◽  
Water Flux ◽  
Hollow Fibre ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Pure Water Flux ◽  
And Performance

Ceramic hollow fibre membrane (CHFM) demonstrated superior characteristics and performance in any separation application. The only problem associated with this kind of technology is the high cost. In order to effectively fabricate and produce low cost porous CHFM, a series of CHFMs made of kaolin were fabricated via combined phase inversion and sintering technique. The CHFMs from kaolin named as kaolin hollow fibre membranes (KHFMs) were studied at different kaolin contents of 35 wt.%, 37.5 wt.% and 40 wt.% sintered at 1200ºC. The result indicated that by varying kaolin contents, different morphologies were obtained due to changes in the viscosity of ceramic suspension containing kaolin. The optimum kaolin content for KHFM was identified. It was found that KHFM prepared at 37.5 wt% has a mechanical strength and pure water flux of A and B respectively.  

scholarly journals Fabrication of low-cost ceramic hollow fiber membranes from aluminium dross waste for water purification

2019 ◽  
Vol 15 (4) ◽  
pp. 483-488
Author(s):  
Mohd Haiqal Abd Aziz ◽  
Mohd Hafiz Dzarfan Othman ◽  
Ahmad Fauzi Ismail ◽  
Mukhlis Abdul Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Low Cost ◽  
Hollow Fibre ◽  
Inversion Method ◽  
Alumina Membrane ◽  
Pure Alumina ◽  
Hollow Fibre Membrane ◽  
X Ray ◽  
Fibre Membrane ◽  
Aluminium Dross

In this study, alumina-spinel composite hollow fibre membranes were fabricated from abundantly available aluminium dross waste, which can be commonly obtained from aluminium-producing factory. The hollow fibre membranes were successfully fabricated by using a combine phase inversion method and sintering technique. The effects of sintering temperatures on morphology, mechanical strength, and permeability of the hollow fibre membranes were systematically investigated. X-ray fluorescence (XRF) was used to analyze the composition of the aluminium dross waste, while x-ray diffraction analysis (XRD) were further studied to characterize the major crystalline phase of the sintered hollow fibre membranes. An increase in sintering temperatures resulted in densification of hollow fibre membrane, consequently induced the flux reduction. The presence of spinel in microstructural of hollow fibre assisted in decreasing the sintering temperature. As comparison to pure alumina membrane counterparts, this alternative ceramic hollow fibre membrane exhibited a comparable mechanical strength of 78.3-155.1 MPa with lower sintering temperatures ranging from 1350 ˚C to 1400 ˚C at ceramic loading of 40%.

High flux ultrafiltration membrane for drinking water production

2001 ◽  
Vol 1 (5-6) ◽  
pp. 177-184 ◽  
Author(s):  
S. Nakatsuka ◽  
T. Ase ◽  
T. Miyano
Keyword(s):  
Drinking Water ◽  
Hollow Fibre ◽  
Asymmetric Structure ◽  
Dense Layer ◽  
High Flux ◽  
Water Production ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Drinking Water Production

The high flux ultrafiltration hollow fibre membrane (HFCA) for drinking water production was developed and the membrane performance was evaluated by long-term ultrafiltration testing with river water. The hollow fibre membrane was made of cellulose acetate (CA) and has a highly porous structure with a very thin dense layer on the internal surface of the membrane. The ultrafiltration flux of the HFCA membrane was compared with that of the conventional CA membrane without such a highly asymmetric structure. The flux for the HFCA membrane was almost twice as high as that for the conventional one. The performance of the conventional CA membrane was also compared with that of membranes with different materials, namely polyethersulfone (PES) and polyacrylonitrile (PAN). The result showed much higher flux for the CA membrane, indicating that the fouling can be effectively controlled by using the membrane with hydrophilic and negatively charged properties. It was shown that the high flux for the HFCA membrane was due to characteristics of both membrane material and porous membrane structure. The pilot plant testing was carried out to examine the performance in the long term operation, and confirmed the high performance of the HFCA membrane for the application of drinking water treatment.

Investigation on the effect of sintering temperature on kaolin hollow fibre membrane for dye filtration

2017 ◽  
Vol 24 (19) ◽  
pp. 15905-15917 ◽  
Author(s):  
Nur Hamizah Mohtor ◽  
Mohd Hafiz Dzarfan Othman ◽  
Ahmad Fauzi Ismail ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
Hollow Fibre ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane

scholarly journals CHEMICAL CLEANING OF MICROFILTRATION CERAMIC MEMBRANE FOULED BY NOM

2018 ◽  
Vol 80 (6) ◽  
Author(s):  
Maisarah Mohamed Bazin ◽  
Yuzo Nakamura ◽  
Norhayati Ahmad
Keyword(s):  
Ceramic Membrane ◽  
Sintering Temperature ◽  
Ph Value ◽  
Pure Water ◽  
Water Flux ◽  
Chemical Cleaning ◽  
Naoh Solution ◽  
Membrane Porosity ◽  
Pure Water Flux ◽  
Ball Clay

Microfiltration membrane made from Sayong ball clay by using uniaxial dry compaction method was used to treat natural organic matter (NOM) source water. A sintering temperature of 900 °C to 1000 °C were applied. The effect of sintering temperature on membrane porosity, strength and water flux were identified. The porosity of the membrane decreased with increasing sintering temperature and the strength and flux increased with temperature. The membrane was subjected to NOM filtration experiments. The results showed an improvement to the quality of permeate water, where there is a reduction in COD, TSS, BOD5, turbidity, hardness and salinity; and an increased pH value. The effect of chemical cleaning on the fouled membrane also was studied. After cleaning with NaOH solution, a high flux recovery was achieved (up to 50% from the initial pure water flux). The degree of cleanliness of fouled membranes after chemical cleaning was further observed with SEM and EDX analysis.

scholarly journals Characteristic properties of ceramic membrane derived from fly ash with different loadings and sintering temperature

2019 ◽  
Vol 15 (3) ◽  
pp. 414-420
Author(s):  
Siti Nur Afiqah Zulkifli ◽  
Azeman Mustafa ◽  
Mohd Hafiz Dzarfan Othman ◽  
Siti Khadijah Hubadillah
Keyword(s):  
Fly Ash ◽  
Mechanical Strength ◽  
Phase Inversion ◽  
Ceramic Membrane ◽  
Sintering Temperature ◽  
Pure Water ◽  
Bending Test ◽  
Sintering Process ◽  
Cross Sectional ◽  
Water Separation

Nowadays, ceramic membrane developed from wastes has gained attention, especially towards water separation applications. With abundant and high silica content of fly ash, low cost ceramic membrane was successfully prepared via phase inversion and sintering technique. Prior to both phase inversion and sintering process, ceramic suspension was prepared at different loadings, ranging from 40wt% to 50 wt% fly ash and subsequently sintered at temperature ranging from 1150°C to 1350°C. By varying fly ash content and sintering temperature, the morphology, mechanical strength and phase transformation characteristics of the prepared membrane were affected. The characterisation of prepared membrane were investigated by using scanning electron microscopy, three-point bending test, and X-ray diffraction (XRD). The mechanical strength of the membrane increased with increasing fly ash loading (up to 45 %), however too much fly ash loading resulted in decrease of its mechanical strength probably due the presence of unburnt at higher fly ash contents. This unburnt carbon contributed to the vacant space during sintering process and had the tendency to increase formation of pores, simultaneously reduced its mechanical strength. In addition, the SEM results also illustrated a cross-sectional image of the membrane which had become more elastic with increasing fly ash loading and denser as sintering temperature gradually increased. In addition, increasing the fly ash loading likely discouraged the formation of desired finger-like structure. The XRD results however showed continuous presence of mullite with the increasing sintering temperature which contributed higher mechanical strength. The preliminary performance tests indicated that the optimum conditions to produce hollow fibre ceramic membrane from fly ash were at 45 wt % fly ash loading sintered at 1350°C and has a pure water flux of 131 L/m2h.

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