Utilization of Flue Gases for Waste Paper ONP/OCC/OMG Recycling - Semi Pilot Scale Demonstration

In the present work, we report a novel microstructure of synthesized colloidal calcite PCC (precipitated calcium carbonate) without any additives by a simple and ecofriendly carbonation process carried out in a liquid-gas system on the crystal growth of the colloidal calcite phase. Especially, the process parameters of Ca(OH)₂ concentration and CO₂ flow rates were investigated to enhance the sensitivity of the process. The colloidal pcc calcite was obtained at pH 6.0, temperature 25⁰C, Ca(OH)₂ concentration 0.2M, CO₂ flow rate 80mL/min, and total volume 1L. The utilization of flue gas-derived CO₂ from coal fired power plants could be a form of carbon capture and storage using carbonation reaction with colloidal PCC. Finally, the synthesized colloidal PCC was used as a filer for ONP/OCC/OMG recycling. We demonstrated all these experiemnts at semi pilot plant scale.

© 2015 The Authors.