Hydrophobic mullite ceramic hollow fibre membrane (Hy-MHFM) for seawater desalination via direct contact membrane distillation (DCMD) |
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| Affiliation: | 1. Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, UTM, Skudai, Johor, Malaysia;2. School of Technology Management and Logistics, Universiti Utara Malaysia, Sintok, Kedah, 06010, Malaysia;3. Higher Institute of Science and Technology Soqalkhamis Imsehel, Tripoli, Libya;4. Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;5. Faculty of Chemical and Process Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Kuantan, Pahang, Malaysia;1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, Inner Mongolia 010051, PR China;2. Inner Mongolia Key Laboratory of Renewable Energy, Hohhot, Inner Mongolia 010051, PR China;1. Laboratory of Thermal Sciences (LATERMO), Department of Mechanical Engineering – TEM/PGMEC, Universidade Federal Fluminense – UFF, Niterói, RJ, Brazil;2. Laboratory of Nano & Microfluidics and Microsystems (LabMEMS), Mechanical Eng. Dept., POLI & COPPE, Universidade Federal do Rio de Janeiro, UFRJ, Brazil;3. General Directorate of Nuclear and Technological Development, DGDNTM, Brazilian Navy, Ministry of Defense, RJ, Brazil |
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| Abstract: | A low-cost hydrophobic mullite hollow fibre membrane (Hy-MHFM) fabricated via phase inversion/sintering technique followed by fluoroalkyl silane (FAS) grafting is presented in this study. The prepared CHFMs were characterized before and after the grafting step using different characterization techniques. The pore size of the CHFM surface was also determined using ImageJ software. The desalination performance of the grafted membrane was evaluated in direct contact membrane distillation (DCMD) using synthetic seawater of varying salt concentrations for 2 h at various feedwater temperatures. The outcome of the evaluations showed declines in the permeate flux of the membrane at increasing feed concentration, as well as increased flux with increased feed temperature. The long-term stability of the membrane was achieved at time 20 h, feed temperature 60 °C, and permeate temperature 10 °C, the membrane achieved a salt rejection performance of about 99.99 % and a water flux value of 22.51 kg/ m2 h. |
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| Keywords: | Mullite Ceramic membrane Direct contact membrane distillation Seawater desalination Hydrophobic membrane |
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