Re: [compost_tea] Cornelious vessels

From: David Anderson <squtch_at_gmail.com>
Date: Thu, 17 Mar 2005 14:41:54 -0800
Are you suggesting brewing in the vessel at pressure, or using that
liquid to brew at normal pressure?

I can think of a whole pile of potential problems with brewing at that
pressure, but we should have to try it to see which, if any, of those
problems actually occur.

If you are talking about using that supersaturated water it
atmospheric pressure, with the surface exposed to air (instead of pure
O2, then the O2 levels would quickly dissipate into the air or be used
up by the bacteria.

You could actually get quite a boost in DO by brewing in an enclosed
vessel and feeding a lot of pure O2 into it. You would just need to
have an exhaust valve and be feeding the O2 in fast enough to keep
ahead of the critters using it up. It will take the place of all the
N2, which should give you about 5 times as much O2 in the mix as when
you use air.

You still need to exhaust enough of this mix to keep the CO2 down in
the really low range. In the atmosphere it is something like 1/3%.

I suppose that it would also depend on what the metabolisms of the
critters expect. Do any of them need that dissolved N2?

If you are considering doing it in a pressurized container,  you also
have to take into account the effects of pressurization,
depressurization, and whether they can live at that pressure.

This is definitley a case where you would actually have to try it out
and get the test results. I'd be very interested in seeing the
results.

Dave


On Thu, 17 Mar 2005 21:41:00 -0000, Jack Hickman
<jackhickman_at_bellsouth.net> wrote:
>
>
> I have a question.I had one of these vessels.These are used to
> dispense Coke and Pepsi at soda fountains.I used welder's oxygen which
> is pure oxygen.I set the vessel at 60 psi and pumped the oxygen in the
> vessel.Let set for 1 hour with,with pressure up.This gave me anywhere
> from 40 to 60 ppm dissolved oxygen in it.
> My question, would this make a better ACT?

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Received on Thu Mar 17 2005 - 22:04:42 EST

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