Preparation and Characterization of TiO2-LaFeO3 based Mixed Matrix Membrane for Oily Wastewater Treatment
AbstractThe aim of this study was to investigate the effects of catalyst loading in mixed matrix membrane. LaFeO3 and TiO2-LaFeO3 were synthesized by sol-gel glucose method. Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), contact angle, membrane permeation testing unit and UV-Vis spectrophotometer techniques are used for characterization. FTIR showed the successful transformation of photocatalyst TiO2, LaFeO3 and TiO2-LaFeO3. Due to increase in nanoparticles loading, the hydrophilicity of the membrane had improved thus increase the permeation flux. The cross-section morphology of membranes (PTL-1, PTL-3 and PTL-4) indicated that all the membranes were found to have asymmetric structure, consisting of dense top layer (air side), a porous sublayer (finger-like) and a small portion of sponge-like bottom surface layer (glass side). But as for the PTL-2, the cross sections of the membranes have a fully sponge-like structure. The formation of sponge-like structure was associated to the slow solidification process during the casting. The highest oily wastewater rejection was 76.26% with highest permeation flux and lower contact angle. This result showed that nanoparticles with membrane had improved the oily wastewater rejection. It proved that the fabricated nanoparticles with mixed matrix membrane exhibits a high flux, which is 2 to 3 orders of magnitude higher than commercial filtration membranes with an acceptable separation performance.
S. Khaoulani, H. Chaker, C. Cadet, C. Bychkov, L. Eugene and A. Bengueddach. 2015. Wastewater Treatment by Cyclodextrin Polymers and Noble Metal/mesoporous TiO2 Photocatalysts. Comptes Rendus Chimie. 18(1): 23â€“31.
R. Ruth, M. Erol, F. Bakal, G. Oner and E. Ã‡elik. 2015. Surface & Coatings Technology Photocatalytic Degradation of Cyanide in Wastewater Using New Generated Nano-Thin Film Photocatalyst. Surface and Coating Technology. 271: 207â€“216.
L. Yu, M. Han and F. He. 2013. A Review of Treating Oily Wastewater. Arabian Journal of Chemistry. http:// dx.doi.org/10.1016/j.arabjc.2013.07.020. In Press.
P. Kanhere and Z. Chen. 2014. A Review on Visible Light Active Perovskite-based Photocatalysts. Molecules. 19(12): 19995-20022.
M. Padaki, R. Surya Murali, M. S. Abdullah, N. Misdan, A. Moslehyani, M. A. Kassim, N. Hilal and A. F. Ismail. 2015. Membrane Technology Enhancement in Oil-Water Separation. A Review. Desalination. 357: 197â€“207.
S. Narjes, A. Kamran and M. Ali. 2017. Photocatalytic Degradation of 2,4-Dichlorophenol by Co-Doped TiO2 (Co/TiO2) Nanoparticles and Co/TiO2 Containing Mixed Matrix Membranes. Journal of Water Process Engineering. 17: 124â€“34.
H. Zangeneh, A. Zinatizadeh, A. L. Habibi, M. Akia and M. Hasnain Isa. 2015. Photocatalytic Oxidation of Organic Dyes and Pollutants in Wastewater Using Different Modified Titanium Dioxides: A Comparative Review. Journal of Industrial and Engineering Chemistry. 26: 1â€“36.
R. Dhinesh Kumar, R. Thangappan and R. Jayavel. 2016. Synthesis and Characterization of LaFeO3/TiO2 Nanocomposites for Visible Light Photocatalytic Activity. Journal of Physics and Chemistry of Solids. 101: 25â€“33.
E. Yuliwati and A. F. Ismail. 2011. Effect of Additives Concentration on the Surface Properties and Performance of PVDF Ultrafiltration Membranes for Refinery Produced Wastewater Treatment. Desalination. 273(1): 226â€“234.
H. Shen, T. Xue, Y. Wang, G. Cao, Y. Lu and G. Fang. 2016. Photocatalytic Property of Perovskite LaFeO3 Synthesized by Sol-Gel Process and Vacuum Microwave Calcination. Materials Research Bulletin. 84: 15â€“24.
J. Feng, T. Liu, Y. Xu, J. Zhao, H. Yanyan and J. Ceram. 2011. Synthesis of Nanocrystalline LaFeO3 Powders via Glucose Sol-Gel Route. Materials Chemistry and Physics. 12(3): 1047â€“1050.
V. K. Gupta and I. Ali. 2013. Chapter 5: Water Treatment by Membrane Filtration Techniques. Environmental Water. 135â€“154.
M. Matos, G. GutiÃ©rrez, A. Lobo, J. Coca, C. Pazos and J. M. Benito. 2016. Surfactant Effect on the Ultrafiltration of Oil-in Water Emulsions Using Ceramic Membranes. Journal of Membrane Science. 520: 749â€“59.
D. Vernardou, G. Kalogerakis, E. Stratakis, G. Kenanakis E. Koudoumas and N. Katsarakis. 2009. Photoinduced Hydrophilic and Photocatalytic Response of Hydrothemally Grown TiO2 nanosructured Thin Films. Solid State science. 11(8): 1499â€“1502.
R. Abazari and S. Sasnati. 2013. Perovskite LaFeO3 Nanoparticles Synthesized by the Reverse Microemulsion Nanoreactors in the Presence of Aerosol-OT: Morphology, Crystal Structure and their Optical Properties. Super Lattices and Microstructures. 64: 148â€“157.
K. Mehrotra, G. S. Yablonsky, and A. K. Ray. 2005. Macro Kinetic Studies for Photocatalytic Degradation of Benzoic Acid in Immobilized Systems. Chemosphere. 60: 1427â€“1436.