The stability of dual layer hollow fibre membranes with immobilized TiO2 nanoparticles in photocatalysis process
Paper ID : 1281-MST2015-FULL
Authors:
Mohd Othman *1, Hazlini Dzinun2, Ahmad Fauzi Ismail3, Mohd Hafiz Puteh4, Mukhlis A Rahman2, Juhana Jaafar3
1Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia (UTM)
2Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
3Universiti Teknologi Malaysia
4Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia.
Abstract:
The coupling of photocatalysis with membrane separation has emerged as a promising water treatment process. During the operation, the photocatalytic membranes are constantly exposed to UV irradiation. The effects of UV irradiation on the structure and long-term stability of polymer membranes need to be investigated. Therefore, this study focuses on the limits and stability of the TiO2/PVDF dual layer hollow fibre (DLHF) membranes against photocatalytic reactions for photocatalytic-membrane process. Three different ratio of TiO2/PVDF DLHF membranes (i.e: 0, 0.2, 1.0) were evaluated under different power of ultraviolet (UV) (8W and 36W). Membrane stability was characterized by changes in fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) morphology analysis. The results revealed that no differences in FTIR peaks were found between new membranes and used membranes as well as for different type of membrane (0 and 0.2 TiO2/PVDF ratio), suggesting that UV illumination (18.2 μW/cm2 of UV intensity) did not affect the stability of the PVDF membrane significantly for 6 days exposure. These DLHF membranes were then subjected to 30 days of UV exposure for limitation testing.
Keywords:
TiO2/PVDF dual layer hollow fibrre membranes; Photocatalytic degradation; Nonylphenol
Status : Paper Accepted (Oral Presentation)