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acquires the desired transparency. For example, with diatomite filtration of beer
is used in the production of vodka using activated carbon and others.
Separation using membranes with solutions. Currently widely used method
for separating food solutions through semipermeable walls - ultrafiltration or
reverse osmosis.
Ultrafiltration
is intended to separate solutions low osmotic delay and
allows a relatively large molecule with a molecular weight above 500. The
ultrafiltration is carried out at a relatively low pressure of 0.05-1.0 MPa.
Reverse osmosis
is used to separate solutions of low molecular weight
substances having a high osmotic pressure, while the operating pressure is 5.0 -
10.0 MPa.
Separation solutions membrane
method occurs without phase
transformations at ambient temperature, which favorably affects the quality of
finished products.
The membranes must have high selectivity for the substance to be
extracted, high permeability, sufficient mechanical strength, resistance to
aggressive media, constancy of parameters during continuous operation.
Anisotropic membranes
represent a plate thickness of 0.01 - 0.4 microns.
The most widely used membranes based on cellulose acetate, cellulose triacetate,
ethyl cellulose, polyamide, cellophane, etc..
Membrane food processing i
s widely used in the preparation of water for
the production of soft drinks, alcoholic beverages, to clean the microbiological
production of products. This process is widely applied separation solutions in the
dairy industry: salty whey to demineralization, in cheese brine purification for
the production of concentrated milk and other dairy products.
Ultrafiltration is intended to separate solutions low - osmotic delay and
allows a relatively large molecule with a molecular weight above 500. The
ultrafiltration is carried out at a relatively low pressure of 0.05-1.0 MPa.
Reverse osmosis is used to separate solutions of low molecular weight
substances having a high osmotic pressure, while the operating pressure is 5.0
10.0 MPa.
Separation solutions membrane method occurs without phase
transformations at ambient temperature, which favorably affects the quality of
finished products.
The membranes must have high selectivity for the substance to be
extracted, high permeability, sufficient mechanical strength, resistance to
aggressive media, and constancy of parameters during continuous operation.
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