| Title of Process/ Know-how/ Product/Design/Equipment

Process for inter-polymer membranes for the separation/concentration of value-added chemicals/salts from aqueous/organic medium

IPR Status & Details:

WO 2014080427 A1

Application/Uses/Problem being addressed

For the separation/concentration of value-added chemicals/salts from aqueous/organic medium

Salient Technical Features including Competing Features/ Impact

  • High counter ion transport number >0.95
  • Low water uptake 12-15%
  • High ion exchange capacity 1.30-1.45 meqg-1
  • Stability to pH window 1 to 14

    • TRL Level & Scale of Development:- TRL 5 TRL Reference

    -

    Business scope & opportunity (in terms of scale, cost, market etc.)

    The technology is ready for technology transfer and can be implemented on commercial scale

    Environmental Considerations

    Eco-friendly

    Status of Licensing:

    Not yet licensed

    Status of Commercialization:

    Not applicable

    Major Raw Materials Needed

    Polyethylene, styrene, 4-methyl styrene, benzoyl peroxide, trimethyl amine, chlorosulfonic acid

    Major Plant Equipment and Machinery Required

    Polymer making mixtruder, blow film extruder, glass column

    Techno-Economics

    The manufacturing cost of the membranes ₹2000/m2 while the commercial membranes price are around ₹8000-15000/m2

    Technology Package

  • Preparation of acid and alkali stable polyethylene polystyrene interpolymer based cation exchange membrane
  • Preparation of acid and alkali stable polyethylene poly4-methyl styrene interpolymer based anion exchange membrane
  • Use of these membranes for the recovery and concentration of alkali
  • Use of these membranes for the separation/concentration of value-added chemicals/salts from aqueous/organic medium

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