Mitigation Ideas: Carbon Capture and Sequestration
Carbon capture and sequestration refers to the process of capturing carbon dioxide and storing it in a place permanently, usually underground. It has usually been used at sites such as a cement factory that produces a lot of carbon dioxide as waste. Another strategy uses “biochar” to capture and sequester carbon in the soil, at the same time enriching the soil for agriculture.
Direct carbon capture refers to using man-made machines, catalysts, or other techniques to pull in air and filter out CO2. At this point in time, there is no efficient, effective way to do this, and we do not have machines capable of removing CO2 from the atmosphere on any meaningful scale. Meanwhile, some advances in this technology have been made:
Plastic resin that absorbs carbon from the air
Researchers at Colombia University developed a material that aggressively absorbs carbon and can release it again when exposed to water, making the material potentially re-useable.
Biochar is created by burning organic waste in oxygen-free chambers and then burying it. New England Biochar is one of many companies around the world seeking to increase the use of biochar as a soil enrichment technique that also takes carbon out of the atmosphere (through photosynthesis). They are creating a stable organic material that will persist in the soils for years.