Membrane Filtration
Systems for microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) are used for concentration, separation
and purification purposes in the processing of both natural and
semi-synthetic antibiotics, a technology area in which GEA Process Engineering
has been involved since the early 1980’s giving our customers unrivalled
experience.
Separation & Purification
Ultrafiltration and microfiltration systems can be
used to separate cells from antibiotics. The UF/MF process offers a higher
yield and as the permeate is crystal clear, the downstream processing is more
efficient. Ultrafiltration and
microfiltration substitutes
traditional processes such as drum filters and centrifuges.
Cell disruption is necessary when the product is intracellular. This can be
done by using an homogenizer. Ultrafiltration is very well-suited for the separation of
product and cell debris, and is considerably more efficient than traditional
processes and is completely clear and free from any cell debris.
Concentration & Purification
Reverse osmosis and nanofiltration processes can be used for
concentration and purification. Concentration through reverse osmosis and
nanofiltration is much more energy efficient and gentler than using an
evaporator. By using nanofiltration membranes
it is possible to have a large amount of inorganic salt as well as lower
molecular weight impurities permeate the membrane, while the antibiotic is
retained and thus concentrated and purified.