CO ₂ capture technology refers to the process of collecting and separating CO ₂ generated by fossil energy utilization in industries such as power and chemical engineering. This process is the main link in energy consumption and cost generation of the CCUS system.

Chemical utilization of CO ₂: Using CO ₂ as raw material, it undergoes chemical transformation with other substances to produce high value-added chemical products, such as methanol, carbonate, acetic acid, and ethanol.

CO ₂ biological utilization technology: By simulating the natural light and action processes of plants and microorganisms in nature, a new artificial photosynthetic system and pathway are designed and constructed to more efficiently convert CO ₂ into synthetic chemicals and agricultural products.

Mineralization and utilization of CO ₂: imitate the absorption process of natural CO ₂ minerals, and use Basic oxide in natural silicate ore or solid waste residue. The process of absorbing and converting CO ₂ into stable inorganic carbonates, such as CaO and MgO. With the development of technology, utilizing CO ₂ mineralization to treat waste has become a new research approach, among which CO ₂ incorporation into concrete is considered a very promising large-scale fixed CO ₂ utilization route.