ADSORPTIVE CAPACITY OF ACTIVE-FILTER AIDS FOR USED COOKING OIL

Many materials are purported to adsorb polar compounds that are the result of degradation of oils used for deep-fat frying. In the present study, the capacity of several of these adsorbents in terms of the amount of polar oil degradation compounds adsorbed by a given weight of material was determined. A significant difference in the adsorptive characteristics and capacity of the materials tested was demonstrated. Adsorptive capacity varied from 0 to over 150 mg of total polar compounds per gram of adsorbent. Some of the materials demonstrated selective adsorption characteristics. For these materials, only one class of polar compounds was adsorbed.