• Maximum product yield and excellent juice quality 
  • Tubular membranes allow high solid concentrations 
  • Modular design, high performance on small footprint 
  • Reliable and fully automated system 
  • Integrated CIP system and tank management

The Bucher Unipektin UltraStar XL has been designed for applications in the food industry and biotechnology. Due to its large diameter tubular membranes it is predestinated for the clarification of aqueous suspensions with medium to high suspended solids content. The Bucher Unipektin UltraStar XL is mainly used for the filtration of juices (from apples, pears, berries, stone fruits, citrus fruits, and pineapples), fruit wines and fermenter broths.

The UltraStar XL is a semicontinuous cross-flow filtration plant. The product that needs to be clarified is circulated via a circulation tank through the inside of the ½’’ diameter membrane tubes. A portion of the liquid phase thereby permeates through the membrane and leaves the system as permeate. Fresh product is continuously added into the circulation tank. As soon as the maximum concentration of suspended solids has been reached, the retentate can optionally be diafiltered (leached out with water) to maximise the yield. Due to the modular design a wide capacity range is covered. Different membranes cut off enable an adaptation to various applications. The up- and downstream product tanks can be managed by the integrated control system. Hygienic design with automated CIP including the circulation tank.

Membrane modules: 4’’ housing, L = 3.6 m, 5.2 m2, 37 pcs. ½’’ membrane tubes

Membrane types: UF, PVDF membranes with cut off approx. 100 kD or 250 kD

Membrane area: 83 - 499m2

Temperature range: 10 - 55 °C pH-range 2.0 -10.5

Connected load: 36 - 85 kW

Dimensions Units: < 250m2 : 3’317 x 4’432 x 3’(W x L x H in mm) 

Units > 250m2 : 4’794 x 4’432 x 3’496

Scope of supply: Circulation unit with control cabinet assembled on frame, filter module unit, fully automated PLC control with touch panel.