Pressure Ferment and carbonate water at the same time? FREE Co2?

[Beer-Baron]

This is my plan to make carbonated water with free Co2 captured during fermentation.

Is this a good idea? Bad idea? I haven't tried yet. INPUT?

 

[DuncB]

I've thought about this but did think it would probably have beer / hops aroma in the water, I can smell the beer ferment in the house during any ferment.
You would also need to get the water very cold if it was at room temp of 20 celsius and 12 psi you'd only get about 1.55 vols of CO2 in. If you chill the water to 4 celsius the vols absorbed would be about 2.6.
I normally have more than 3 vols in my sparkling water so you'd need to up the ferment pressure to 35 psi at 20 celsius or 18 psi at 4 celsius.

I suppose an inline carbon filter might scrub the aromas before the keg is a possibilty.

 

[DuncB]

Maybe just a fast ferment, water sugar yeast nutrient for this plan.

 

[Knightshade]

If this is happening during fermentation, aren't you placing undue stress on the yeast by subjecting it to that kind of pressure?

 

[DuncB]

Depends if you want a really clean ferment no esters etc pressure is your friend.
Lagers with kveik at 35 celsius under 30 psi come out very clean and the yeast still works.
Saison yeast a little more tetchy.