FFA distillates from the refining process as well as waste cooking oil are used forBiodiesel production. Many different process routes are used for esterification and industries are looking at milder processes such as using Enzymes. However, this conversion method only reaches a 2-3% FFA level. To further reduce theFFA, the product must undergo either potassium or sodium hydroxide neutralization or ion Exchange Resins. GreenFinery™ can be used to remove virtually all of the remaining FFA after Enzyme based esterification.