Uses of Carbon Dioxide Across Industries
Carbon dioxide is often discussed mainly as a greenhouse gas, but its role goes far beyond that. It is naturally present in the atmosphere and plays an important role across many industries in processes that support production, preservation, healthcare, research and more.
In this blog, we will explore the importance of carbon dioxide and the harm its excess can cause to our planet, along with the various applications and uses of carbon dioxide and finally the importance of decarbonization and using CO2 where it can make a difference.
How Important Is Carbon Dioxide?
Carbon dioxide is essential to life on Earth. Plants absorb CO2 during photosynthesis to support their growth, while the process releases oxygen, making CO2 a necessary part of the natural carbon cycle and the balance of our atmosphere.
Its importance also extends into industry. The physical properties of CO2 allow it to be used in different forms: gas, liquid, solid and supercritical, for functions that would otherwise be difficult or less efficient to achieve.
It also helps preserve food, carbonate beverages, support medical procedures, control pH in water treatment, cool and transport temperature-sensitive products and support a range of manufacturing and research processes.
But all of this does not come without a cost.
Is Carbon Dioxide Dangerous?
CO2 itself is essential to life, but excessive concentrations can be very harmful.
In enclosed environments, high levels of carbon dioxide can create serious respiratory risks and can also displace oxygen, which is why proper ventilation and monitoring are important when CO2 is used in healthcare or industrial facilities.
From an environmental perspective, the bigger concern is the increase in carbon dioxide released through human activities. These emissions contribute to the greenhouse effect and are one of the reasons industries are increasingly focused on decarbonization and carbon management.
What Are the Main Uses of Carbon Dioxide?
CO2 has many uses that we interact with every day. Here are some of the most important:
CO2 Uses in Food and Beverage
One of the most familiar carbon dioxide uses in everyday life is carbonation.
CO2 is used to create the bubbles in soft drinks and other carbonated beverages. In food production, it can also be used for chilling and freezing, modified atmosphere packaging and temperature control during storage and transportation.
CO2 Uses in Healthcare
Medical-grade carbon dioxide is used in controlled healthcare applications, including surgical insufflation and dermatology.
Because medical CO2 comes into contact with patients, it is subject to strict quality and purity requirements that distinguish it from industrial-grade carbon dioxide.
CO2 Uses in Water Treatment
Carbon dioxide is widely used in water treatment to control pH and neutralize alkaline water and wastewater streams.
It can also be used in desalination processes for potable water production, making water treatment an important application of carbon dioxide in environmental management.
CO2 Uses in Welding and Metal Fabrication
In metal fabrication, CO2 can be used as a shielding gas during welding.
It also has other applications across the metal sector, including fume suppression and certain water treatment processes related to mining operations.
CO2 Uses in Agriculture
In greenhouse agriculture, carbon dioxide can help increase the growth rate and yield of fruits, vegetables, plants and flowers when used at suitable levels.
This makes CO2 an important tool for growers looking to improve productivity under controlled conditions.
CO2 Uses in Laboratories and Research
Laboratories use carbon dioxide in several ways, including dry ice for research, calibration gas mixtures for air-quality and emissions monitoring and supercritical CO2 in chromatography and extraction processes.
CO2 Uses in Oil and Gas
In the oil and gas sector, carbon dioxide can be used in enhanced oil recovery to reduce the viscosity of heavy oil and can also help repressurize depleted reservoirs.
Liquid CO2 and Dry Ice Uses
Liquid CO2 can be used as a refrigerant in industrial cryogenic applications to maintain low temperatures during different processes. It can also be used in the production of dry ice.
Dry ice, the solid form of carbon dioxide, reaches around -78.5°C and is commonly used for temperature control during food production, packaging, transportation and other applications where refrigeration is essential.
Using CO2 While Advancing Decarbonization
Carbon dioxide has many valuable applications, but utilizing it does not remove our wider need to reduce emissions.
Some captured CO2 can be reused in food production, greenhouses and industrial applications. However, these uses alone are not enough to absorb the volume of emissions produced by heavy industry. This is where solutions such as carbon capture and storage can also play a role, especially in sectors where emissions are difficult to eliminate.
Learn more about carbon capture and storage (CCS) through our guide
The goal should not be to stop using carbon dioxide in any way. It is to use it responsibly where it creates real value, while continuing to reduce, capture and manage emissions as part of the broader transition toward lower-carbon industry.
And for that, Air Liquide Group has committed to achieving carbon neutrality by 2050, in line with the ambitions of the Paris Agreement.
CO2 Solutions with Air Liquide Egypt
From food and beverage to healthcare and industry, Air Liquide Egypt provides carbon dioxide solutions designed to suit your operational needs.