[denny]

Which is another reason you recapture your own from fermentation (spunding in one form or another, basically pure) and get the best you can for dispensing only(and consume moderately fast). All modern brewhouses will more than likely capture fermentation co2, re-condense it into liquid co2, and use it though out the brewery.

ALL?  Not a single one I deal with regularly does that.  Some might, but as far as I can tell, more don't.

Sierra Nevada captures their CO2 and processes it for the brewery. That's what they said on the brewery tour I was on 3 years ago.

[denny]

How come writing is so easy when I'm procrastinating at work, but so difficult when I want to do other stuff after work?!

Dude, I feel your pain...I'm working on a book, 2 magazine articles and 3 reviews! 

[beersk]

Which is another reason you recapture your own from fermentation (spunding in one form or another, basically pure) and get the best you can for dispensing only(and consume moderately fast). All modern brewhouses will more than likely capture fermentation co2, re-condense it into liquid co2, and use it though out the brewery.

ALL?  Not a single one I deal with regularly does that.  Some might, but as far as I can tell, more don't.

Sierra Nevada captures their CO2 and processes it for the brewery. That's what they said on the brewery tour I was on 3 years ago.

I thought you "dealt" with them in some way. But nevermind then.

[denny]

ALL?  Not a single one I deal with regularly does that.  Some might, but as far as I can tell, more don't.

Sierra Nevada captures their CO2 and processes it for the brewery. That's what they said on the brewery tour I was on 3 years ago.
[/quote]
[/quote]
I thought you "dealt" with them in some way. But nevermind then.
[/quote]

Regularly....  See I put plenty of qualifiers in there!

[Stevie]

Denny pulling off the "depends on what the definition of is is" defense.

[narvin]

This all jives with the British method of carbonating in a cask, even when bottling. Different method from spunding, but should have the same result.

Same difference, using pure fermentation co2 to carbonate and keep DO down.

Honest question...is the fermentation CO2 pure?

As pure as it can get.

What does that even mean?  If you're saying that the gasses given off by fermentation are 100% CO2, that false.  That smell coming out of the airlock?  That'ts not CO2.

When breweries capture CO2, I'm pretty sure they also filter it.

[natebriscoe]

This all jives with the British method of carbonating in a cask, even when bottling. Different method from spunding, but should have the same result.

Same difference, using pure fermentation co2 to carbonate and keep DO down.

Honest question...is the fermentation CO2 pure?

As pure as it can get.

What does that even mean?  If you're saying that the gasses given off by fermentation are 100% CO2, that false.  That smell coming out of the airlock?  That'ts not CO2.

When breweries capture CO2, I'm pretty sure they also filter it.

Not a chemist here. But I believe it has more to do with its not oxygen.

[dmtaylor]

Not a chemist here. But I believe it has more to do with its not oxygen.

CO2 is the primary gas produced by fermentation.  However, it is of course far from the only gas emitted.  There's also various sulfur compounds, aromatic esters, alcohols, water vapor, etc.  You are correct -- none of these are oxygen.  The only way to produce oxygen that I know of would be via electrolysis by running an electrical current through the water like a battery, and I seriously doubt any brewer is doing that!  Nevermind the flammable hydrogen gas that would be produced along with it!

[The Beerery]

This all jives with the British method of carbonating in a cask, even when bottling. Different method from spunding, but should have the same result.

Same difference, using pure fermentation co2 to carbonate and keep DO down.

Honest question...is the fermentation CO2 pure?

As pure as it can get.

What does that even mean?  If you're saying that the gasses given off by fermentation are 100% CO2, that false.  That smell coming out of the airlock?  That'ts not CO2.

When breweries capture CO2, I'm pretty sure they also filter it.

Oh Narvin.

You know very well that's not what I meant.   The question was about oxygen in man made co2. So the answer pertains to that....But incase you didn't understand. The o2 content in fermentation co2 is as pure as the best man made co2 can be.... and it's free!

[narvin]

This all jives with the British method of carbonating in a cask, even when bottling. Different method from spunding, but should have the same result.

Same difference, using pure fermentation co2 to carbonate and keep DO down.

Honest question...is the fermentation CO2 pure?

As pure as it can get.

What does that even mean?  If you're saying that the gasses given off by fermentation are 100% CO2, that false.  That smell coming out of the airlock?  That'ts not CO2.

When breweries capture CO2, I'm pretty sure they also filter it.

Oh Narvin.

You know very well that's not what I meant.   The question was about oxygen in man made co2. So the answer pertains to that....But incase you didn't understand. The o2 content in fermentation co2 is as pure as the best man made co2 can be.... and it's free!

Thanks for clarifying.  I really wasn't sure what you meant. My point, which I think is valid, is that there are plenty of other aromatic compounds produced during fermentation that are off gassed.

[The Beerery]

Of course, I don't think anyone is debating that. There are plenty of co2 "recycling" diagrams in Kunze if you care to explore it.


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[narvin]

Of course, I don't think anyone is debating that. There are plenty of co2 "recycling" diagrams in Kunze if you care to explore it.

Well then, I question why you relate that to spunding then since they are two completely different things.

Or perhaps the extra sulfur trapped by spunding is truly what you are tasting as IT 

[The Beerery]

Umm? Did you hit your head today?  Because you are not making any sense.


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[Stevie]

Umm? I don't follow, can you explain?


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Fixed it for you. Don't be a dick.

[narvin]

Umm? Did you hit your head today?  Because you are not making any sense.


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Good one!