Abstract:
An integrated approach to flue gas CO2 capture, wastewater neutralization, and product utilization using a high-gravity carbonation process is discussed. Numerous industrial solid wastes, such as iron/steel slag, fly/bottom ash, and byproduct lime, could be used as the feedstock for the high-gravity carbonation process. The process exhibits a high CO2 removal efficiency with a short residence time at ambient temperature and pressure, where alkaline solid wastes are successfully carbonated with CO2 to form calcium carbonate. The reaction products could be further utilized in blended cements at substation ratios of 5−20%. Therefore, CO2 emissions from the cement industry can be indirectly avoided. This chapter also provides insight into the integrated air pollution control, such as sulfur oxides and particulate matter, at industries via the high-gravity process. An integrated approach to stabilization of alkaline …