Waste Vegetable Oil for Biodiesel

These containers once held virgin cooking oil and now hold the waste from cleaning restaurant fryers. There are several variables that impact the color of the oil, such as type of food, time at high heat, and amount of water and other contaminants left from fryer cleaning. Left to settle, the water and other particulate will sink to the bottom. The oil in these containers can be used for producing biodiesel or filtered waste vegetable oil fuel. Both settling and large micron filtering will be used to remove water and sediment. Smaller micron filtering is then necessary to further reduce contaminants. Filtering speed is greatly increased by higher oil temperatures.
Richard Wiswall, Cate Farm, Plainfield, VT
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