ABSTRACT

This study covers the laboratory studies on the adsorption of polar compounds of frying oil by synthetic magnesium silicate and activated carbon produced from the same origin rice hull. The polar components adsorption capacity of the produced magnesium silicate was 644 mg polar comp./g adsorbent. This value was higher compared to the capacities of the industrial magnesium silicate Magnesol XL, an industrial activated carbon and laboratory produced activated carbon which have the values of 616, 552 and 368 mg polar compound/g adsorbent, respectively. Magnesium silicate was produced with a very simple reaction between magnesium chloride and the sodium silicate solution which was obtained before by the alkaline treatment of the industrial rice hull ash of Thrace region in Turkey. The product magnesium silicate had a surface area of 680 m2/g and a particle size around 40 ì. Laboratory producd activated carbon however had a 43 m2/g surface area and 150 ì particle size.

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