00000cab a22000004a 4500 IPP-00000288241 IPP 20190813113359.0 190813s2003 xx d | ||r |||||eng|| eng Ignacio, Ma. Teresa T. Utilization of Kapatagan diatomite as filter media for used cooking oil 2003 The effectiveness of naturally occurring diatomaceous earth (Bacillariophyceae) from Kapatagan, Lanao del Norte as filter media to improve used cooking oil properties was studied. The efficiency of filtration was determined in terms of free fatty acid (FFA) removal and improvement of color. Body feeding filtration technique was employed with varying amounts of diatomite admixture: 5%, 7.5%, 10%, and 15% dry weight. The effects of stirring time and filtration stages on filtration efficiency were also determined. Results showed that the amount of diatomite body feed admixture as well as stirring time had significant effects in reducing FFA with highest reduction observed at 15% diatomite stirred for 10 minutes. On the other hand conducting a second-stage filtration had no significant effect in its reduction. Diatomite was also effective in reducing color, as measured by Hazen Color, with least Hazen Color with 15% admixture at double stage filtration. Stage filtration had significant effect on Hazen Color reduction at the second stage of filtration. The filtered oil was used to make laundry soap which rated very satisfactory. Diatomaceous earth Kapatagan diatomite Used Cooking Oil Filtration Cabonita, Andrea J. The Mindanao Forum: official journal of the MSU-Iligan Institute of Technology Vol. XVIII, no. 1 (Jun. 2003), 85-97 Article FI