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Electrodialysis, a physical and multipurpose process for an enology of precision: last development, pH adjustment of wines by bipolar membranes

Magali Bes, INRA UE 999 Pech-Rouge, Narbonne, Francia

Electrodialysis is a membrane electro-process. Its principle consists in extracting ions through a stack of non-porous ionic membranes under the effect of an electric potential difference. According to the type of membranes used (anionic, cationic, bipolar) and their organization into the stack, electrodialysis is a multipurpose process offering various treatments possibilities

The research studies carried out by Experimental Unit INRA of Pech-Rouge, in partnership with the Eurodia/Oenodia company, demonstrated the potentialities of electrodialysis and its interest for the wines treatment.

The electrodialysis process allows, with the same technological device, equipped with various configuration membranes stack and adapted sensors (conductimeter, pH-meter) to ensure the controlled treatments of tartaric stabilization, and henceforth of pH adjustment. Controllable, the developped equipment makes it possible to very precisely reach the target values for a perfectly controlled wines quality, without the use of additive.

The paper reproduced in this video-seminar was presented at the 2013 International SIVE Awards “Research for Development” (8th edition of Enoforum; 7-9 maggio 2013, Arezzo, Italy)

 

Note

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Published on 16/12/2014
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