Making food-grade CO₂

Carbon dioxide is produced as a byproduct from a number of industrial processes, including the production of ammonia, which is used in fertilisers

Gases including carbon dioxide are produced as an industrial byproduct

Gas mixtures are passed through solutions or over solids that capture the CO2

Further processes, such as drying to remove water, raise the gas to a very high purity

The resulting food-grade CO2 is liquefied for transportation