| Autor: |
Ajenifuja, E., Akinwunmi, O. O., Bakare, M. K., Ajao, J. A., Adeniyi, I. F., Ajayi, E. O. B. |
| Předmět: |
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| Zdroj: |
ISRN Ceramics; 2012, p1-11, 11p |
| Abstrakt: |
Microporous ceramic matrix membranes were prepared with complementary proportions of locally available zeolitic aluminosilicate materials and other abundant lateritic clay minerals. The membranes cast as circular disks (22.78mm diameter and 2.11mm thickness) were treated with silver nitrate solution to discourage microbial growth on their surface and then sintered at 900 ± 5℃ for about 20 hours. Antimicrobial microfiltration process showed 87.24% to 100% bacterial rejection depending on the material combination ratio. Elemental characterization of the membrane materials was done using ion beam analysis (IBA) technique of particle induced X-ray emission (PIXE), while the physicochemical behaviour of the ceramic membranes was carried out through the analysis of the filtered water samples using atomic absorption spectroscopy (AAS), total dissolved solids (TDS), microbial, and pH analyses. Compositional characterization of raw materials showed comparatively low contents of impurities, such as Fe and Ca, in the raw materials, but with high SiO2/Al2O3 ratios for the rawmaterial which is important for zeoliticmaterial synthesis. Regularly porous microstructure of mean pore diameter of between 50nm and 100nm was observed from the analyzed images obtained from ZEISS Supra 40 scanning electron microscope. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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