Membranes

Services

Membrane development

  • Polymer, mixed-matrix, ceramic membranes
  • Hollow fiber, capillary and tubular membranes
  • Flat sheet membranes
  • Membrane modification (wet-chemical, plasma, sol-gel, continuous roll-to-roll processes)

Module development

  • Polymer modules
  • Full ceramic modules
  • Static potting
  • Centrifugal potting

Application studies

  • Microfiltration (MF), ultrafiltration (UF), nanofiltration (NF)
  • Membrane adsorber
  • Reverse osmosis (PO), forward osmosis (FO), pressure-retarded osmosis (PRO)
  • Vapor transfer, especially for humidification applications
  • Gas separation (RT up to 1000°C)

Membrane characterization

  • Microscopy (SEM, FESEM, AFM)
  • Flux, permeability and selectivity
  • MWCO determination
  • Pore size and pore size distribution (BET)
  • Conductivity (ion, electron)
  • Mechanical properties
  • Thermal properties (TGA, dilatometry)
  • Surface analysis (ESCA, XPS, wetting)
  • Membrane swelling
  • Membrane degradation
  • Post mortem analysis (membranes and modules)

Equipment

Membrane preparation

  • Wet spinning equipment
  • Double piston spinning equipment
  • Electro spinning equipment
  • Different furnaces for sintering
  • Equipment to build membrane modules

Membrane coating

  • Dip-coating device for e.g. sol-gel coatings
  • Device for electroless plating
  • Various reactors for low pressure plasma coatings

Membrane characterisation

  • Microscopy (SEM, AFM)
  • Flux, permeability and selectivity
  • MWCO-determination
  • Pore size and pore size distribution (BET, Porometry)
  • Conductivity (Ions, electrons)
  • Mechanical properties
  • Thermal properties (TGA, Dilatometry)
  • Surface analysis (ESCA, XPS, wetting)
  • Membrane fouling
  • Membrane swelling
  • Membrane degradation
  • Failure analysis (Membranes and modules)
  • Rheology
  • Particle size (micro-, nanoparticles)

Application studies

Equipment for

  • Gas separation (roomtemperature up to 1000 °C)
  • Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF)
  • Reverse osmosis (RO), forward osmosis (FO), pressure-retarded Osmose (PRO)
  • Pervaporation
  • Transport of steam