Electrodialysis (Extractis)

Electrodialysis is a process that permits to partially or totally remove the ions present in a solution by their migration through selective ion-exchange membranes under an electric field.

 

Two configurations are possible:

  • Conventional electrodialysis : initially applied for sea water treatment, the process permits to demineralize a solution. The stack is composed of an alternance of homopolar anionic and cationic membranes.
  • Bipolar electrodialysis: it permits to convert a salt in its associated acidic or basic form, while demineralizing the solution. The stack is composes of an alternance of anionic or cationic membranes, and bipolar membranes dissociating water.

 

electrodialyse

Accueil – EXTRACTIS – Extraction végétale