Carbon dioxide has a greater impact on the environment than any other anthropogenic greenhouse gas due to the sheer amount that is being discharged into the atmosphere by combustion of fossil fuels. Carbon dioxide levels have increased by over 30% since the beginning of the industrial revolution, resulting in a global warming trend and increased acidity of oceans. Mitigation technologies are necessary for the short- and long-term capture and storage of carbon dioxide. Removal of carbon dioxide from the flue exhaust of power plants, currently a major source of anthropogenic carbon dioxide, is commonly accomplished by chilling and pressurizing the exhaust or by passing the fumes through a fluidized bed of aqueous amine solution, both of which are costly and inefficient. While other methods such as those based on chemisorption of carbon dioxide exist, more cost effective technologies are necessary to cope with the overwhelming amount of carbon dioxide currently generated.
Researchers at the University of Michigan have developed a carbon dioxide storage system to handle the emission of the anthropogenic gas. The system includes a container and a conduit attached to the container for introducing or removing a carbon dioxide-containing composition from the container in which a carbon dioxide storage material is positioned. The carbon dioxide-storage material includes a metal-organic framework, which has a sufficient surface area to store at least 10 carbon dioxide molecules per formula unit of the metal-organic framework at a temperature of about 25 degrees C.
Applications and Advantages
- Storage of carbon dioxide
- Efficient carbon dioxide storage via use of-nl-metal-organic framework
- Optimizable uptake capacities
- Fully reversible carbon dioxide uptake-nl-and release