Abstract
Deep or soft degumming mechanism was treated in the present research paper. Deep degumming is a physical-chemical refining process, which involves the complete removing of total oil phosphatides by using a chelating agent (EDTA) in the presence of an emulsifying additive (sodium dodecyl sulfate – SDS).
The direct hydratable phosphatides are, in the first stage, separated from the crude oil by water classic degumming process and, in the second stage, a chelating treatment is applied in order to remove the heavy metals which imposed the non-hydratable phosphatides to separate from the partial degummed oil.
Cuvinte cheie
deep degumming
oil
phosphatides