Membrane processes

ALFAPUR Technologies redefining membrane processes :

  • Microfiltration (MF)
  • Ultrafiltration (UF)
  • Nanofiltration (NF)
  • Gas separation (S.G.)

Our innovation and technology-driven diversification strategy enables us to create and produce various kinds of membranes for different processes.

membrane ceramic


Whether you are looking to use an existing membrane or to develop a new custom membrane to meet your needs, Alfapur Technologies can do it all. Because we have the know-how, the resources and the team to find the solution you are looking for.


Implementation, optimization


Development, modification


Analytical tools, control

Design and manufacture

Structure perfectly suited to the type of treatment envisaged and the characteristics of the membrane:

  • Good mechanical, chemical and thermal resistance
  • Excellent inertia to solvents and corrosives
  • Minimum maintenance
  • Long service life, up to 10 years
  • Compatibility with modules
  • High permeability
Membrane processes

Design rules

Choice of membrane type

Choice of module type

The selection criteria for modules may relate to:

  • Their compactness
  • The size of their tangential flow channels
  • The sealing device
  • Their ease of assembly and disassembly

Choice of operating conditions

The operating conditions are:

  • The transmembrane pressure range
  • The range of permeation rates
  • The range of recovery rates
  • The speed range / flow rate
Membrane processes

Technical specifications

Membrane NameFeatures
Membrane Materials Al2O3, TiO2, ZrO2, SiC
Type of membraneMulti-hole porous tubular
Filtration typeCross flow
Direction of flowIndoor - outdoor operation
Nominal pore size (MPS)1.2 µm,
Total lengthup to 41,3 in (1050 mm)
Acid-base stability0 - 14 pH
Sealing type and materialSide seal at both ends (10mm) and Viton O-ring
All membrane models are suitable for steam sterilization121°C / 249.8° F and more

Physico-chemical analyzes

The team members of the Alfapur Technologies have a solid expertise which allows to analyze and identify membrane structure and morphology while using cutting-edge technologies


  • Sampling
  • Grinding
  • Split
  • Pulverization
  • Fusion


  • Chemical composition (AA, ICP, MP-AES)
  • Mineralogical structure (DRX, SEM, optical microscope)
  • Particle size distribution (Screening, laser, Cyclosizer)
  • Measurement of the apparent and relative density by pycnometer
  • Measurement of porosity and specific surface using the BET method
  • TGA
  • Melting point


  • Experimental determination of the permeability coefficients
  • Experimental determination of diffusion coefficients
  • Experimental determination of the sorption coefficient
  • Characterization of transport properties

Membrane processes