Frequently Asked Questions
What is CSS?
Carbon Capture and Storage (CCS) is a technological approach capable of seizing around 95% of carbon dioxide (CO2) emissions. These emissions typically originate from the combustion of fossil fuels for electricity production and various industrial activities. The CCS process prevents the release of these emissions into the atmosphere and instead safely stores the captured CO2 deep underground on a long-term basis.
What role does CCS play in combating climate change?
By effectively capturing and storing CO₂, thus preventing its release into the atmosphere, Carbon Capture and Storage (CCS) serves as one of the key technologies that can significantly lower emissions originating from industrial processes, thereby aiding in the fight against climate change.
What are the potential applications of CCS?
Carbon Capture and Storage (CCS) can be utilized to effectively reduce carbon dioxide emissions from various sources, including power generation facilities and industrial processes.
How does CCS work?
The process of Carbon Capture and Storage (CCS) operates in three primary stages:
Capture: In the first phase, CO2 emissions are captured at their source, typically from large point sources like power plants or industrial sites that burn fossil fuels. The capture can be performed pre-combustion, post-combustion, or through oxyfuel combustion, each with their respective methods and technologies.
Transport: Once the CO2 is captured and compressed, it’s transported to a suitable storage site. This is typically done via pipelines, though it can also be transported by ship or road if necessary.
Storage: The final phase involves storing the captured CO2 in geological formations deep underground. This can include depleted oil and gas fields, unminable coal seams, or deep saline formations. These sites are carefully chosen and monitored to ensure the CO2 remains securely stored and does not leak back into the atmosphere.
Is it safe to store CO₂ below sea-level?
Yes, research indicates that the storage of carbon dioxide (CO2) beneath the sea, a process often known as carbon capture and storage (CCS) or offshore carbon storage, is both viable and safe. This practice involves the injection of CO2 into porous rock formations or depleted oil and gas reservoirs located beneath the seabed, typically at depths greater than 800 meters. The aim is to ensure that the CO2 remains safely stored and doesn’t contribute to atmospheric greenhouse gas levels.
Site selection is a critical part of this process, as choosing locations that minimize the risk of leakage is paramount. Furthermore, implementing robust monitoring and remediation procedures provide additional assurance that the stored CO2 remains securely in place.