| Popis: |
Porous hybrid ceramic beads were synthesized by burning at 1090°C under a reductive atmosphere. They consist of the natural mineral (graphite silica, GS), the pyroclastic deposit “shirasu” and titanium dioxide. They showed the bleaching of the aqueous dyestuff solutions (rhodamin B, acridine orange, methyl orange, methylene blue) and the degradation of a surfactant dodecyltrimethylpyridinium bromide and humic acid. The decolorizing rate of dye stuff was monitored by the absorption spectra under UV irradiation and a dark condition. The repeatedly reused ceramic beads also proved a comparable performance to the new ceramic beads for decolorizing of dye solution. The rate was compared for some ceramic beads of different components and structures. The effect of anatase titanium oxide on the ceramics surface and the UV irradiation was not clear. These ceramic beads were applied for the decolorizing of cattle urine pretreated by microorganisms and proved the high performance. Key Words: Water processing, Waste water, Catalysis, Dye degradation, Hybrid ceramics |
