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" ... CO2 is in the exhaust whenever fossil fuels are burned in cars and power plants. But it’s also emitted from cement and steel manufacturing, gas processors, and ethanol plants. In CO2 scrubbers, chemicals (often amines) absorb some of the CO2 in power plant chimneys — but are expensive. Wherever its captured, the CO2 can then be injected and locked in deep underground — permanently. The process is called CCS (for carbon capture and storage). Ten large-scale CCS operations exist in the USA. ... "
" ... CO2 scrubbers are devices that remove CO2 from exhaust gases (flue gases) in power plants. The CO2 scrubbers feature some kind of chemical (often an amine compound) to absorb CO2, but it’s an expensive process. ... "
" ... One technology that has received particular attention has been the use of scrubbers. This is a piece of equipment that could cost up to $10 million, and can remove the sulfur emissions as it is being produced. This could end up being as high as a quarter of the value of a large, ocean-bound ship. ... "
" ... Ship owners’ investment behavior also needs watching. After a “phony war” that lasted a year after the announcement, ship owners are now investing heavily in vessel exhaust treatment systems, called scrubbers. These systems typically “wash” the vessel exhaust gases with sea water, which reduces airborne emissions. There are now over 2,000 scrubbers on order, mostly destined for large, long-distance vessels. This is modest in a global shipping fleet that numbers over 90,000 vessels. ... "