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  • Fecha de creación 3 noviembre 2021
  • Última actualización 3 noviembre 2021

Capturing CO2 with LIME

Humankind has used lime as an essential enabling material in a multitude of applications for over 7000 years so

How is it made and what can we use it for?

When calcium carbonate which is the chemical name for limestone
is heated to about a thousand degrees celsius it undergoes a chemical reaction
creating quick lime releasing carbon dioxide in the process

Adding water to quickline will turn it into hydrated lime

When more water is added the hydrated lime is suspended in the water
creating milk of lime

When hydrated lime comes in contact with carbon dioxide it forms limestone again this is

"the lime cycle"

The process of lime capturing carbon dioxide is called carbonation and occurs in many common applications of lime it plays an essential role in environmental protection by cleaning exhaust gases from power plants and treating wastewater carbonation also plays a role in different types of building materials
and in iron and steel production where it occurs during the open air storage of slag

Up to one third (1/3) of the carbon dioxide (CO2) emitted by lime from the process emissions is captured again through natural carbonation

Showing that carbonation needs to be accounted for when considering the carbon footprint of the lime industry

Booklet in languages: