What puts the ‘pop’ in soda pop? Antifreeze!
Chemistry: Two companies in Canada have found a way to deliver fizz while reducing environmental damage.
Ever wonder where they find all that fizzy water to make soft drinks? Well, they don’t. Most soda is made by mixing syrup with water and injecting the mixture with carbon dioxide. Now, two companies in Canada have found a way to deliver the fizz while reducing environmental damage. The Shell Chemicals plant in Scotford, Alberta, makes monoethylene glycol, an ingredient in antifreeze — and generates 65,000 to 70,000 tons of carbon dioxide each year. But instead of releasing the gas into the atmosphere and contributing to global warming, Shell will deliver it to Air Liquide, a company that supplies soft drink makers. Shell’s carbon dioxide arrives with many impurities, including water, hydrocarbons (such as methane, ethane, and ethylene), and dust. Air Liquide cleans the gas by cooling it so the water condenses, heating it to 450