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Evaluation of the Thickness and Permeability in Asymmetric Membranes of TiO2 Supported on Alumina
Abstract:
The aim of this study is to evaluate the thickness and permeability of the membranes of TiO2 supported on Al2O3. The TiO2 samples were prepared by combustion reaction method using monohydrated citric acid, aniline and urea as fuel. It was prepared three samples with different morphological characteristics. The membranes were prepared by dip coating, and characterized by scanning electron microscopy (SEM), permeate flux and turbidity in laboratory test. The membrane obtained with urea presented layer formed at 16 µm of thickness. For membrane obtained with powder from citric acid and aniline do not presented layer formation. The membrane obtained with samples synthesized urea showed: higher permeated flux (185.46 kg/ h.m ²), higher particle rejection (97%) and lower turbidity (0.99 NTU) with contaminated water. The membrane obtained with powders from citric acid and aniline showed: permeated flux of 128.61 and 138.41 kg/h.m², rejection of 96 and 95% and turbidity of 1.33 and 1.13 NTU, respectively.
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634-639
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Online since:
August 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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