UV irradiation on PVDF/TiO2 nanocomposite membrane to improve antifouling properties
Paper ID : 1290-MST2015-FULL
Authors:
1Maryam Tavakolmoghadam *, 2Geoffroy Lesage, 3Toraj Mohammadi, 4Jean-Pierre Mericq, 5Julie Mendret
1Research Institute of Petroleum Industry and Iran university of science and technology
2Institut Européen des Membranes, CNRS, UMR 5635, Université Montpellier II
3Faculty of Chemical Engineering, Iran University of Science and Technology (IUST)
4bInstitut Européen des Membranes
5Institut Européen des Membranes
Abstract:
The anti-fouling properties of a nanocomposite membrane which were prepared via Non-Solvent Induced Phase Inversion method by adding TiO2 nanoparticles to polyvinylidene fluoride (PVDF) casting solution have been investigated in darkness and under UV irradiation. Experimental results indicate that nanocomposite membrane has a structure with longer and larger macrovoid than neat PVDF membranes resulting in higher water flux performances. Moreover the positive antifouling properties of simultaneous UV irradiation during ultrafiltration of real soluble extracellular polymeric substances (EPS), as the main foulants representative of those found in membrane bioreactor processes, has been demonstrated. Higher flux performances due to superhydrophilicity phenomenom of nanocomposite TiO2/PVDF membranes under UV irradiation lead also to better retention performances of EPS solution filtration. Finally, nanocomposite membranes under UV irradiation presented the best flux recovery ratio because of self-cleaning properties and this should lead to the development of a better control of fouling of membrane filtration processes.
Keywords:
PVDF/TiO2 membrane, ultrafiltration, UV irradiation, extracellular polymeric substances, fouling
Status : Paper Accepted (Oral Presentation)