Issues with CCS
Issues with CCS
1) Energy Consumption
- require the construction of an amine-scrubber
- The CO2 removal process itself would consume around 25% of the electricity output of the coal-fired power station,cost of first-generation CCS will be about $150/ton of CO2 A. Harvard study
- Once captured as "fairly pure" CO2, it would have to be compressed up to the point of liquefaction, consuming high capital costs and power consumptions,
- expensive pipework for CO2 delivery to "depleted" oil and/ or gas reservoirs. A University of California study found that laying the 16 inch diameter pipeline that CCS would require would cost $800,000/mile (in 2002 dollars).
- Because CO2 is denser than air, when it leaks out of the ground it forms an invisible, undetectable cloud that pools near the ground and displaces the oxygen suffocating any life nearby.This has happened naturally and given us a glimpse of what could occur: in 1986, Lake Nyos in Cameroon released a large amount of CO2, silently killing nearly two thousand people and a large number of livestock.
- CO2 could be trapped for millions of years, and although some leakage occurs upwards through the soil, well selected storage sites are likely to retain over 99% of the injected CO2 over 1000 years.
- Leakage through the injection pipe is a greater risk due to the pressure. The Berkel en Rodenrijs incident in December 2008 was an example, where a modest release of CO2 from a pipeline under a bridge resulted in deaths
- CO2 cannot be injected anywhere underground suitable host rock formations must first be identify
3) Social Acceptance
- Impact on biosphere
- Fear of leakage and explotion
- Impact on property value