Development Of Indigenous Adsorbent Material to Reduce Toxicants from Used Cooking Oils

Abstract

Modern research aims to use eco-friendly and indigenous materials for purification of used cooking oils. In this context, clay has gained significant importance and applied as an Eco compatible and low-cost resource. The effects of indigenous adsorbents were examined by determining the following quality parameters: acid value (AV), peroxide value (PV), density and viscosity. Indigenous adsorbents with different ratio as 2:8, 4:6, 5:5 and 8:2 was formed by coprecipitation method. Fuller’s earth-China clay material is activated by acid to check its enhanced capability. The surface area and pore size of adsorbents are increased after treatment with organic acid, which absorb more impurities. The experiments showed that the oil is suitable for consumption after the purification by fuller’s earth-China clay composites material with the help of filtration method. Free fatty acid value before treatment was 2.98% and after treatment FFA value is 0.91% which shows 70% FFA value recovery Peroxide value before treatment was 45miliequ/1000 and after treatment by adsorbent is 10milliequ/1000 that is 77% recovery rate. After treatment of used cooking by adsorbents produced about 80% to 85% fresh oil. Characterization of prepared indigenous adsorbents is done by FTIR, XRD, SEM and BET which confirm its efficiency for oil purification.