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Comprehensive study of morphological modification of dual-layer hollow fiber membrane

Nurherdiana, Silvana Dwi and Utomo, Wahyu Prasetyo and Sajidah, Happy Bunga Nasyirahul and Jamil, Siti Munira and Othman, Mohd. Hafiz Dzarfan and Fansuri, Hamzah (2019) Comprehensive study of morphological modification of dual-layer hollow fiber membrane. Arabian Journal for Science and Engineering, 44 (12). pp. 10041-10055. ISSN 2193-567X

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Official URL: http://dx.doi.org/10.1007/s13369-019-04057-5

Abstract

The NiO–YSZ/LSCF–YSZ dual-layer hollow fiber membrane receives increasing attention which is due liable to quick changes in properties during co-extrusion followed by the co-sintering method. The effect of mixed bore liquid of water + ethanol + n-methyl-2-pyrrolidone and co-sintering temperature on physical and chemical characteristics of the obtained membrane was systematically explored in this study. Here, the characterization of the membrane was inspected using scanning electron microscope–energy-dispersive X-ray, three-point bending, mercury porosimetry, X-ray diffraction and nitrogen tightness tests as well as the oxygen permeation test. Results indicated that membrane prepared using 100% water as a bore liquid produced a sandwich structure. On the contrary, by employing 40:10:50% of water/ethanol/NMP as a mixed bore liquid and sintering for 8 h at 1300 °C, an open-channel structure in the microstructure gives a good porosity as tested using mercury porosimetry, mechanical properties and nitrogen permeability with no secondary phases. In addition, the co-sintering effect was examined by increasing temperature to 1400 and 1500 °C. However, an impurity phase of LaZr2O7 was formed which is due to the chemical reaction of La and Sr into YSZ structure. Oxygen permeate concentration through the dual-layer membrane was found to be slightly different as compared to the single-layer hollow fiber membrane. The results further suggest that the outer layer should be tighter and thinner to enhance the oxygen ion diffusion.

Item Type:Article
Uncontrolled Keywords:Bore liquid, Pore configuration
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:88268
Deposited By: Widya Wahid
Deposited On:15 Dec 2020 07:19
Last Modified:15 Dec 2020 07:19

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