![]() ProcessĬCS consists of two different yet connected steps. ![]() Courtesy of US Department of Energy, National Carbon Sequestration Database and Geographic Information System (NATCARB). Geologic carbon sequestration stands out, in particular, as a viable option because of its substantial storage capacity, which is estimated to be between 800 and 3,000 billion metric tons the technology of separating and injecting CO 2 underground has been used for more than 30 years and the large CO 2 sources such as power plants and refineries are conveniently located near many potential geologic storage sites across the US and Canada (Fig. A process that occurs faster than a natural reaction is when “dunite, or its hydrated equivalent serpentinite, reacts with carbon dioxide to form the carbonate mineral magnesite, plus silica and iron oxide (magnetite).” Features It is a natural process that happens slowly and produces limestone. Mineral sequestration is the formation of stable carbonate salts by the reaction of CO 2 with dissolved calcium and magnesium. Geologic sequestration is permanently storing CO 2 in subsurface structures such as oil reservoirs, natural gas deposits, unmineable coal seams, deep saline formations, shale rich in oil or gas, and basalt formations. Terrestrial sequestration is the removal and storage of CO 2 from the atmosphere by vegetation and soils on the earth’s surface through tree-planting, no-till farming, wetland restoration, and forestation. More than 150 CO 2 sequestration projects are in progress in North America alone. There are three types of CO 2 sequestration: terrestrial, geologic, and mineralization (Fig. TypesĪfter CO 2 is captured at the source, it then must be safely sequestered or stored away. CO 2 sequestration is an option that is gaining interest to stabilize and reduce the concentration of CO 2. This has led to concerns over the impact of CO 2 emissions on global climate change. As the demand for fossil fuels is growing, so is the volume of CO 2 emitted each year. PurposeĬO 2 emissions from the burning of fossil fuels has been on the incline since the industrial era and with more than 85% of the world’s energy coming from fossil fuels, it will remain an important energy source well into the future. In fact, carbon capture was first used in Texas in 1972 as a method to enhance oil recovery. It is not a new technology and has been used by petroleum, chemical, and power industries for decades. Carbon capture and storage technology involves the process of trapping and separating the CO 2, transporting it to a storage location, and then storing it long-term so that it does not enter into the atmosphere.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |