Ceramic Membranes Lab Report

PREPARATION AND CHARACTERIZATION OF POROUS CERAMIC MEMBRANES FOR MICRO-FILTRATOIN FROM CLAY/CUZN USING EXTRUSION METHODS

In this study, fabrication and characterization of ceramic membranes preparation was carried out. Porous ceramic membranes were fabricated by extrusion process from different percentage composition of CuZn on (80 wt% Clay, 10 wt% TiO2, 5 wt% Carbon and 5 wt% PVA). The fabricated membranes were sintered at 900oC for 1 hour in an electrical box furnace with heating rate 1oC/min and holding time for 1 hour. Apparent density and porosity were determined by standard methods for ceramic materials. Phase composition of the ceramic support was established by X-Ray Diffraction analysis. SEM studies of the membranes added at different

Among the potential materials include silicon carbide (SiC), alumina (Al2O3), zirconia (ZrO2), titania (TiO2), and silica (SiO2) [ ]. Commercialized porous ceramic membranes from alumina, zirconia, Titania, and silica are not suitable for large scale application because these membranes are very expensive. In recent years, the preparation and potential application of porous ceramic membrane on the basis of natural occurring minerals such as zeolite, apatite, clay kaolinite, dolomite, have increasingly attracted intention for its low cost. The development of natural mineral-based ceramic membranes can lead to a critical new technological revolution that existed throughout the world [

All the studed materials were tested chemical composition in order to obtain chemical content information. All materials were prepared in the powder shape that passes filtered with 80 mesh, except PVA with 100 mesh.

1.2 Membrane preparation

Manufacturing of green body was done by preparing of 80 wt.% Clay, 10 wt.% TiO2, 5 wt.% BC and 5 wt.% PVA becoming dough. Then, the additive of CuZn was added to the dough with various of 0 wt.%, 10 wt.%, 20 wt.%, 30 wt.% and 40 wt.%. It was processed to become the samples as shown in the following Table 1. The fabrication of the green body was printed by extrusion method of pressure 25 MPa. The details of the processing step of the membranes are displayed in Figure 2. Prior to the extrusion process, all materials were mixed at the rotational speed of 64 rpm for 30 min. After that, its were continued for blending process by water addition of 20 wt.% and 5 wt% oil. The addition of oil has a purpose to facilitate the extrusion process and to avoid cracking on the surface of the created membrane material.

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