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The article focuses on the usage of glycerol to dehydrate supercritical carbon dioxide during hydrocarbon processing with reference to the expansion dehydration units built by Denbury Resources Inc. Glycerol is used to dehydrate carbon dioxide when high-pressures and non-idealities cause excessive vapor-phase glycol losses. As reported, the reason for the expansion at Denbury is that using glycerol dehydrators allows Denbury to process more carbon dioxide for increased hydrocarbon recovery.

The article focuses on the hazards of acid gases hydrogen sulfide (H2S) and carbon dioxide (CO2) to humans. It states that hydrogen sulfide interferes the function of nerve cells and putting nerves to sleep such as olfactory while the mixture of 10 parts of carbon dioxide and 90 parts of air can kill a person on long exposure. It adds that ruling safety precautions and training employees on chemical hazards could limit the impact of hazardous chemicals on human health.