Quote Originally Posted by Anttazz View Post
As I said above, it's not a bi product, the CO2 we use is done with the sole intention of creating CO2.
A quick google search shows that not all liquified Co2 producing companies follow that route... some do use by-products from other industries to process it into a liquid....

read here:

http://www.uk.airliquide.com/en/prod...vironment.html