Typical nanoneutralisation process flow diagram. Courtesy of Desmet Ballestra.
ENZYMATIC DEGUMMING: A MISSING LINK IN THE PHYSICAL REFINING OF SOFT OILS?
easily removed and mean that almost no excess NaOH is required for
complete FFA neutralisation.
The lower acid and caustic consumption results in a decreased formation of
unwanted salts, with a resulting better centrifugal separation of the soapstock
from the oil. As a consequence, an overall neutralised oil yield increase of at
least 0.2% is observed in industrial operation. Overall oil increase can be even
higher due to the lower soap content in the nanoneutralised oil. This reduces
the need for silica treatment or water washing, which directly translates into
lower oil losses.
The positive effects of Nano Reactors
in the neutralisation process can
mainly be explained by the superior mixing effect created during the passage
of the oil/caustic solution through them. However, Nano Reactors
more than just superior mixers and a better understanding of their working
principle will result in further applications in edible oil processing.
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