SYNTHESIS AND CHARACTERIZATION OF SILICA FUME-ALUMINA-KAOLIN-ZEOLITE CERAMIC MEMBRANE BY IN-SITU GROWTH METHOD
Nowadays membranes are extensively used as separation media. In this research, support membranes were synthesized from a mixture of silica fume-alumina-kaolin. A thin layer of zeolite was successfully deposited on the surface of synthesized support membranes. Such membranes were then characterized u...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/35337 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Nowadays membranes are extensively used as separation media. In this research, support membranes were synthesized from a mixture of silica fume-alumina-kaolin. A thin layer of zeolite was successfully deposited on the surface of synthesized support membranes. Such membranes were then characterized using Scanning Electron Microscope for the surface morphological analysis, X-Ray Diffraction (XRD) to analyze the phases and degree of crystallinity of the membrane, contact angle measurement for the analysis of surface properties of the membrane and filtration experiment for the evaluation of membranes performance (permeability and permselectivity) in separation. Synthesized membranes were applied to separate a mizture of starch and maltose. In this research, support membranes were synthesized at 2 variations in calcination temperature and in composition. Support membranes consist of silica fume, alumina and kaolin in the ratio of 66.67 : 20.00 : 13.33 (% w/w) and 55.56 : 16.67 : 27.78 (% w/w), respectively. The experiment results showed that there are three parameters which influence membrane performance: membrane composition, calcination temperature of support membranes, and the presence of thin layer of zeolite deposited on support membranes. For a higher kaolin percentage, a decrease was observed in membrane rejection towards starch. However, a well-defined pattern was not observed for membrane rejection towards maltose. On the other hand, membrane composition shows a more dominant influence on membrane performance than calcinations temperature does. Meanwhile, the presence of thin layer of zeolite caused an increase in membrane rejection towards starch. |
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