[Greenbuilding] Yes, but is it Green ?

[sanjay jain]

Corwyn,

I had assumed that the CO2 used for sodas was the byproduct of breweries. It seems like some CO2 can be recovered from "hydrogen plants, ammonia plants, corn-to-ethanol plants, and breweries" - http://www.uigi.com/co2recovery.html

Wikipedia: "In its dominant route, carbon dioxide is produced as a side product of the industrial production of ammonia and hydrogen"

If as you say, it's from chalk and acid, it's worse than I thought. Coke's main product IS a greenhouse gas.


~sanjay




________________________________
 From: Corwyn <corwyn at midcoast.com>
To: greenbuilding at lists.bioenergylists.org 
Sent: Thursday, January 12, 2012 7:12 PM
Subject: Re: [Greenbuilding] Yes, but is it Green ?
 
On 1/12/2012 5:39 PM, sanjay jain wrote:

>> Having said that, I assume their CO2 gas comes from beer, so perhaps
>> beer drinkers are more at fault!

The carbon dioxide in Coke, and most commercial beers comes from carbonation from chalk and sulfuric acid (or similar).  Only a few micro-breweries (speaking of the US) use yeast based carbonation.

The former is taking sequestered carbon and adding back into the atmosphere, the latter is short cycle sustainable carbon.  This can be detected by the yeast residue at the bottom of the bottle.  (I drink it first for the B vitamins, others avoid it)

Support your local brewery, or brew your own beer and soda.


Thank You Kindly,

Corwyn

-- Topher Belknap
Green Fret Consulting
Kermit didn't know the half of it...
http://www.greenfret.com/
topher at greenfret.com
(207) 882-7652

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