Lime as a Natural Carbon Sink

In Europe, over 20 million tonnes of lime are produced annually. Lime plays a crucial role in various processes, such as steel production and water purification.

However, lime production is associated with high CO₂ emissions due to the calcination of limestone (CaCO₃) to produce quicklime (CaO). As a result, the lime industry faces significant challenges in reducing greenhouse gas emissions.

The European Lime Association (EuLA) is committed to supporting the European Union’s goal of achieving carbon neutrality by 2050.

Interestingly, lime has the natural ability to absorb CO₂ from the atmosphere through a process called carbonation, during which it gradually reverts to limestone.

Research has shown that, on average, approximately 33% of the CO₂ emitted during production can be reabsorbed during the use phase in various applications, in addition to ongoing efforts to improve energy efficiency.