Quality Standards For Degumming

Recommended Quality of Oils for Biodiesel Production
  • Oil must be degummed
  • Phosphorus (Gums) must be <20 PPM
  • Low levels of heavy metals: Iron, Copper, Calcium and Magnesium
Average composition of crude and refined soybean oil*
  

Crude Oil Composition

Conventional Process
Water Degumming

Acid Super Degumming

Green + Plus
Degumming
Water + Cavitation

 Phosophorus (ppm)

 400-1300

 80-200

12-20

 15-35

 Iron (ppm)

 1-3

 <1

 0.1 - 0.3

 N.D.

 Copper (ppm)

 0.03-0.05

 <0.05

 0.02

 N.D.

 Calcium (ppm)

 50-150

 30

 1 - 5

 3-15

 Magnesium (ppm)

 50-150

 20

 1 - 5

 1-12

*The values for (ppm) total are average values for crude oils with the corresponding phosphorus numbers. Actual (ppm) may vary with crude oil quality and process conditions.


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