What is carbon capture and storage (CCS)?
Explanation: The correct answer is B) Storing carbon emissions underground to prevent their release into the atmosphere. Carbon capture and storage (CCS) is a process that involves capturing carbon dioxide emissions from large point sources such as power plants or industrial facilities, transporting the captured CO2, and then injecting and storing it underground in geological formations. CCS helps reduce greenhouse gas emissions and mitigate climate change by preventing the release of carbon dioxide into the atmosphere.
What is the primary goal of carbon capture and storage?
Explanation: The correct answer is D) Minimizing the environmental impact of carbon-intensive industries. The primary goal of carbon capture and storage (CCS) is to reduce the environmental impact of carbon-intensive industries by capturing and storing carbon dioxide emissions. CCS helps mitigate climate change by preventing the release of significant amounts of CO2 into the atmosphere, even as we continue to rely on fossil fuels. It is considered a transitional technology that can support the decarbonization process while renewable energy sources are further developed and scaled up.
What is the main method of capturing carbon dioxide in CCS?
Explanation: The correct answer is C) Absorbing CO2 using chemical solvents. The main method of capturing carbon dioxide in CCS is through absorption using chemical solvents. This process involves exposing flue gases or other CO2-rich gas streams to solvents, such as amine-based compounds, which selectively absorb and capture the CO2. The captured CO2 can then be separated from the solvent and transported for storage or utilized in other processes.
What are potential storage options for captured CO2 in CCS?
Explanation: The correct answer is D) All of the above. Potential storage options for captured CO2 in CCS include ocean storage and deep-sea sequestration, underground geological formations, and mineralization or conversion into solid carbonates. Each option has its own advantages, limitations, and associated environmental considerations. The selection of the storage option depends on factors such as geology, proximity to emission sources, and environmental impacts.
What are the key challenges of implementing carbon capture and storage?
Explanation: The correct answer is D) All of the above. Implementing carbon capture and storage (CCS) faces several challenges, including the lack of suitable storage sites, high cost of technology implementation, and public acceptance and perception. The identification and characterization of suitable geological formations for storage, such as depleted oil and gas reservoirs or deep saline aquifers, can be challenging. CCS technology is currently expensive, which poses economic barriers to its widespread deployment. Additionally, public acceptance and addressing concerns about safety, long-term storage integrity, and environmental impacts are crucial for successful CCS implementation.