زکریا 5 ماه قبل

How do you purify waste oil?
 
 

Methods of oil purification

  1. Sedimentation is precipitation of solid particles and water to the bottom of oil tanks under gravity. …
  2. Filtration is a partial removal of solid particles through filter medium. …
  3. Centrifugation is separation of oil and water, or oil and solid particles by centrifugal forces.