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ZrO2-TiO2 Incorporated PVDF Dual-Layer Hollow Fiber Membrane for Oily Wastewater Treatment: Effect of Air Gap

1
Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81300 Skudai, Johor, Malaysia
2
Malaysian Institute of Marine Engineering Technology (MIMET), Universiti Kuala Lumpur, 32200 Lumut, Perak, Malaysia
3
Malaysian Institute of Chemical and Bio–Engineering Technology (MICET), Universiti Kuala Lumpur, 78000 Alor Gajah, Melaka, Malaysia
*
Author to whom correspondence should be addressed.
Membranes 2020, 10(6), 124; https://doi.org/10.3390/membranes10060124
Received: 4 May 2020 / Revised: 8 June 2020 / Accepted: 12 June 2020 / Published: 16 June 2020
Dual-layer hollow fiber (DLHF) nanocomposite membrane prepared by co-extrusion technique allows a uniform distribution of nanoparticles within the membrane outer layer to enhance the membrane performance. The effects of spinning parameters especially the air gap on the physico-chemical properties of ZrO2-TiO2 nanoparticles incorporated PVDF DLHF membranes for oily wastewater treatment have been investigated in this study. The zeta potential of the nanoparticles was measured to be around –16.5 mV. FESEM–EDX verified the uniform distribution of Ti, Zr, and O elements throughout the nanoparticle sample and the TEM images showed an average nanoparticles grain size of ~12 nm. Meanwhile, the size distribution intensity was around 716 nm. A lower air gap was found to suppress the macrovoid growth which resulted in the formation of thin outer layer incorporated with nanoparticles. The improvement in the separation performance of PVDF DLHF membranes embedded with ZrO2-TiO2 nanoparticles by about 5.7% in comparison to the neat membrane disclosed that the incorporation of ZrO2-TiO2 nanoparticles make them potentially useful for oily wastewater treatment. View Full-Text
Keywords: air gap; hollow fiber spinning; dual-layer hollow fiber; oily wastewater treatment air gap; hollow fiber spinning; dual-layer hollow fiber; oily wastewater treatment
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Yaacob, N.; Goh, P.S.; Ismail, A.F.; Mohd Nazri, N.A.; Ng, B.C.; Zainal Abidin, M.N.; Yogarathinam, L.T. ZrO2-TiO2 Incorporated PVDF Dual-Layer Hollow Fiber Membrane for Oily Wastewater Treatment: Effect of Air Gap. Membranes 2020, 10, 124.

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