There are several ways to capture carbon dioxide from air:
- Direct air capture: This involves using large fans to pull in air, which is then passed through a filter that captures the carbon dioxide. The filter can be made of materials such as amine solutions or adsorbents, which react with or absorb the carbon dioxide.
- Biochar production: Biochar is a type of carbon-rich material made from biomass. When biomass is heated in an oxygen-free environment, the carbon is converted into a stable form called biochar. This process, known as pyrolysis, captures the carbon dioxide that is produced during the process.
- Carbon sequestration: This involves capturing carbon dioxide from power plants or other industrial sources and injecting it into underground reservoirs such as depleted oil and gas fields or saline aquifers. The carbon dioxide remains trapped underground and is not released into the atmosphere.
- Reforestation: Planting trees and other vegetation captures carbon dioxide from the air through photosynthesis. The carbon is stored in the plants and the soil, effectively removing it from the atmosphere.
