Performance improvement and self-cleaning response of polysulfone (PSf) ultrafiltration membrane using polyaniline (PANI)/WO3 nanoparticles as the additive
Paper ID : 1286-MST2015-FULL
Authors:
1Nader Shafaei *, 2Mohsen Jahanshahi, 3Majid Peyravi, 4Ghasem Najafpour
1Membrane Research Group, Nanobiotechnology Institute, Babol University of Technology, Babol, Iran
2Babol University of Technology
3Membrane Research Group, Nanotechnology Institute, Babol University of Technology, Babol, Iran
4Babol University of Technology, Babol, Iran
Abstract:
In this research the effects of adding WO3 and polyaniline (PANI) nanoparticles on membrane surface and UV radiation in creating self-cleaning membrane have been studied. Polysulfone (PSf) membranes were synthesized by adding 2 wt. % WO3 and PANI as additives via phase inversion method for ultrafiltration of landfill leachate. The WO3 mass ratio in additive concentration was varied: 0, 40 and 60 wt. %. All synthesized membranes were tested with UV and without it, in order to be evaluated the function of UV light on the feature of self-cleaning. The results represent that the pore size, porosity and hydrophilicity of WO3/PANI/PSf membranes are influenced by adding these nanoparticles; as the porosity for membrane consisting of PANI has achieved to 68.5 %. The flux has also been increased to 41.31 l.m-2.hr-1, due to the created better porosity. UV light has been effective on membranes including WO3 nanoparticles and as WO3 has enhanced, the flux has improved, too. The flux of the membrane consisting of WO3 under UV radiation was also increased in comparison to the same membrane without UV light. The flux before UV radiation has improved by enhancing the portion of PANI in added nanoparticles. The flux recovery has increased by enhancing the portion of PANI in added nanoparticles before UV illumination and has reached to 74.7 %, while the flux recovery under UV light has relied on the portion of WO3 in added nanoparticles and it has improved as WO3 has increased and has reached to 98.87%. This fact demonstrates that WO3 nanoparticles have created the feature of self-cleaning on the surface of the membrane in the presence of the UV light.
Keywords:
Self-cleaning property- WO3 nanoparticle- Polyaniline (PANI) nanoparticle- landfill leachate treatment- UV light- Polysulfone membrane
Status : Paper Accepted (Oral Presentation)