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Incorporated startups

The biosourced solution for the treatment of aqueous effluents

profilePhoto   Gisela Schach
Linksium Contact Gisela Schach +33 (0)6 33 63 44 99
KITOSPHERE Imadeddine Lakehal, CEO +33 (0)6 22 91 36 33


  • Productivity
  • Participation in the recovery of biomass waste
  • Adsorption efficiency
  • Regeneration capacity

Key words

  • Removal of metals in solution
  • Water purification
  • Vibrated jet granulation

Intellectual Property

  • 1 patent

Partnerships & Rewards

  • Région Auvergne-Rhône-Alpes
  • 2021 i-PhD French Deeptech PhD Competition Winner




  • CNRS
  • USMB

Linksium Continuum

  • Maturation
  • Incubation


  • Incorporated startups


At a time when manufacturers are faced with the challenge of treating their aqueous effluents, with a tightening of the constraints imposed by the Water Framework Directive (WFD), the KitoBioSpheres (KBS) project offers an adapted solution. KBS allows the large-scale production of chitosan beads by a vibratory jet granulation process for the removal of heavy metals from water.


  • Vibrated jet granulation technology (prilling)
  • Extrusion of solubilized chitosan solutions through a calibrated nozzle
  • Coagulation in a chemical bath
  • Production of millimetre-sized and single-dispersed spheres (Ø = 0.5 - 2 mm)


  • Recovery of logs composed of more than 99% chitosan
  • Possibility to put the balls in the form of fluidized beds or columns
  • High adsorption capacity with respect to metals
  • Possible variation in selectivity
  • Regeneration and reuse of beads

State of progress

The vibratory jet granulation production technology is mastered as part of this work and ready for wider use. Laboratory adsorption tests have shown the high adsorption capacity of the beads produced against several transition metals in solution and more specifically copper II and lead II.


  • Metallurgy industries, agro-chemical industries, tanneries, etc...
  • Water purification industries
  • Other potential areas of use (biomaterials, chromatographic column, etc.)