Utilization of Industrial Alkaline-Rich Residues for Combined CO2-sequestration and Production of low-carbon cement.

Transition to circular economy and the high environmental CO2-concentration are the two major challenges that the world faces. This project deals with both the challenges simultaneously.

At first, high-volume industrial residues from metal production, mining, and energy production will be used for CO2-sequestration.

In the process, by optimizing the CO2-sequestration reactions, the project will aim to maximize the amount of CO2 sequestrated per unit industrial residue.

Thereafter, the carbonated by-products of the CO2-sequestration process – the carbonated industrial residues – will be studied for its potential to be used as supplementary cementitious material (SCM) to partially replace Ordinary Portland Cement (OPC).

The objective will be to maximize OPC replacement by carbonated SCM which will lead to significant decrease in the cement related CO2 emissions (almost 0.8 Mt-CO2/Mt-OPC) along with the reduction in the exploitation of primary resources otherwise used for OPC production.