Carbon dioxide absorbers are widely used in closed environments where controlling CO₂ levels is critical. In medical settings, they are essential in anesthesia machines to absorb exhaled CO₂, ensuring patients receive safe and effective respiratory support during surgery. In submarines and spacecraft, these absorbers maintain breathable air by removing CO₂ produced by crew members, preventing respiratory issues and maintaining life support systems.

In the food industry, CO₂ absorbers are used in packaging to extend the shelf life of perishable goods by reducing oxidation and microbial growth. They are also employed in controlled atmosphere storage to preserve the freshness of fruits and vegetables by regulating CO₂ levels.

Additionally, carbon dioxide absorbers play a role in environmental applications, such as in carbon capture and storage (CCS) technologies, where they help reduce greenhouse gas emissions from industrial processes. They are also used in rebreathers for divers and firefighters, ensuring safe breathing in hazardous environments.

Overall, these absorbers are vital in maintaining air quality, safety, and preservation across various industries.