Accelerated mineral carbonation of stainless steel slags for CO2 storage and waste valorization: Effect of process parameters on geochemical properties

- Two SS slag mineral carbonation processes were compared: thin-film versus slurry.
- Thin-film carbonation is suitable for utilization of slags only as carbon sinks.
- Slurry carbonation speeds carbonation conversion and increases CO2 uptake.
- Slurry carbonation further reduces basicity and heavy metals leaching.
- Maximal CO2 uptakes of 0.26 and 0.31 g,CO2/g,slag achieved for AOD and CC slags.