Journal of Materials, Processes and Environment
Volume 3, Numéro 1, Pages 27-32
2015-05-03
Elaboration And Characterization Of Tubular Supports For Membranes Microfiltratio
Authors : Zenikheri F. . Harabi A. . Bouzerara F. . Boudaira B. . Guechi A. .
Abstract
This work is focused on the purification and exploitation of used water; using ceramic filters made up from local raw materials widely available with a low price; they are as kaolin and CaCO3. In the technical procedure two ways are followed. The first one is by samples are made in the form of tubes using extrusion method which were afterwards sintered at 1200 °C for 1 h. It has been found that support had interesting characteristic; an average pore size of about 5.8 μm, a porosity ratio around 52.3% and a flexural strength ≈ 78 MPa. Moreover, the pore size distribution is almost homogeneous. The surface and the cross-section morphologies observed through a scanning electron microscope (SEM) are also homogeneous. In the second way these supports were selected as substrates for the membrane layers used in micro filtration (MF). The membrane layers were elaborated from TiO2, using slip casting technique. The specimens were subsequently sintered at 1100 °C. The microstructure and porosity as well as the permeability have been also studied. It has been found that the average pore size is about 0.37 μm and a layer thickness ≈ 22.7 μm. The water permeability measured is 760 l/ (h.m2.bar).
Keywords
Kaolin; Calcite; Supports; Membranes; Microfiltration; Extrusion.
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