Advanced Topic 1062 of 1102 Biochemistry, Environment & Industry

Carbon Capture

Capturing CO2 from emissions and storing it underground.

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In-depth explanation of Carbon Capture

Carbon capture and storage captures CO2 from large point sources such as power plants and cement works, or directly from air. Post-combustion capture commonly uses aqueous amine solvents such as monoethanolamine, which react with CO2 at low temperature and release it on heating. The captured CO2 is compressed and injected into deep geological formations such as depleted oil reservoirs or saline aquifers for long-term storage. Direct air capture removes CO2 from ambient air using sorbents but is energy intensive. High energy cost, infrastructure and verification of storage are the key challenges.

Going deeper: Carbon Capture

Key ideas: Capture CO2 from flue gas or air, transport and store it in geological formations or use it. Post-combustion capture absorbs CO2 into amines (monoethanolamine, a reversible reaction with CO2 releasing it on heating), pre-combustion uses gasification to H2 plus CO2, oxy-fuel burns in pure O2. Costs are about 50 to 100 dollars per tonne for point sources, more for direct air capture.

Common mistakes and connections: Mistake: thinking it removes the need to cut emissions; it needs large energy for solvent regeneration. Storage depends on saline aquifer capacity and leak risk. Mineral carbonation gives stable carbonates. Links to acid-base chemistry, global warming and carbon cycle.

Visualization of Carbon Capture

CO2 reacts with amine solvents exothermically at low temperature, and heating reverses the reaction, releasing CO2 for storage. This is why heat regenerates the solvent. The interactive lesson shows this as a live animation or chart.

Worked example and use case

Amine scrubbing of flue gas from a coal power plant is the most mature capture technology.

Frequently asked questions about Carbon Capture

What is Carbon Capture?

Capturing CO2 from emissions and storing it underground.

Is Carbon Capture a beginner, intermediate or advanced topic?

Carbon Capture is a advanced topic in Biochemistry, Environment & Industry. It builds on beginner and intermediate topics, so review those first if needed.

What should I learn before Carbon Capture?

Study these earlier topics in Biochemistry, Environment & Industry first: Pesticides, Bioaccumulation, Waste Management.

What comes after Carbon Capture?

The next topics in Biochemistry, Environment & Industry are Renewable Energy Chemistry and Solar Cells.

Can I practise Carbon Capture with quizzes?

Yes. The interactive lesson includes a self-check question on Carbon Capture, and the Biochemistry, Environment & Industry quiz draws on every topic in this area.

Where Carbon Capture fits in Biochemistry, Environment & Industry

Carbon Capture is topic 87 of 127 in Biochemistry, Environment & Industry.