Carbon Capture and Storage – A Roadmap for Scotland
Background to CCS
Schematic diagram showing Elements of CCS infrastructure and relationship with geological structure:
Source: British Geological Survey
What is CCS?
CCS is a 3 step process which involves capturing the CO2 from power plants and other industrial and energy-related sources, transporting it to storage points then storing it safely in offshore depleted oil and gas fields, deep saline aquifers as well as possible sites onshore.
CO2 capture is the process of removing CO2 (carbon dioxide) produced by hydrocarbon combustion (coal, oil and gas) before it enters the atmosphere. The process will be most cost effective when it is used on large point sources of CO2 such as power stations and industrial plants. These currently make up more than half of all man-made CO2 emissions.
There are currently three main methods of capturing CO2:
Post-combustion capture - removing the dilute CO2 from flue gases after hydrocarbon combustion