PRODUCTION OF POROUS CERAMICS FROM SODA-LIME GLASS FOR COLLECTING AND RELEASING ESSENTIAL OILS
Keywords:
Soda lime glass, Porous ceramics, Porosity, Water absorption, Essential oilAbstract
This research aimed to produce porous ceramics from soda lime glass for collecting and releasing essential oils. The soda lime glass was ground into powders, then mixed with 10% polyvinyl alcohol solution in 1:1, 1:1.5, 1:2, 1:2.5, 1:3 and 1:3.5 (g:ml). These mixtures were molded by casting them into a silicone mold, dried, and calcined at 700 °C for 3 hours. It was found that the porous ceramics showed mesoporous structure with a diameter of more than 50 mm. The best porous ceramic sample in this work was the 1:2.5 sample, which showed the highest porosity (34.50%), highest water absorption values (21.43%) and lowest density (1.607 g/cm3). Then the kaffir lime and key lime oils were collected into the best porous ceramic sample by dropping essential oils into these ceramics. Studying the evaporation rates of both types of essential oil, it was found that the evaporation rates of the essential oils contained in the porous ceramic were higher than those of the essential oils in the atmosphere. The pores in the porous ceramics increased the evaporation rate of essential oils which also, increased the volatility in the atmosphere.
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