“ CO2 Forever! A common process for making industrial grade CO2 is to lower the temperature of air until it liquefies and then distil the component... (read full comment) ” 

Posted on August 1, 2009 at 7:36 EDT

“ CO2 is the byproduct of coal fired combustion. It is most easily collected at coal fired power-plants from the stack gases. The process of... (read full comment) ” 

Posted on April 25, 2007 at 11:23 AM EDT

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