Influence of Low Temperature on the Surface and Morphological Properties of Hydrated Lime in SO2 Desulfurization Reaction

In aluminumAluminum production, the use of carbon anodesCarbon anode leads to the sulfur dioxideSulfur dioxide emissions which have adverse effects on health and environment. In this work, hydrated limeLime Ca(OH)2 was used to remove the low concentration of SO2 gas through a semi-dry desulfurizationDesulfurization process. The reaction was carried out under dry and humid conditions, and the reaction at low temperatureLow temperature was studied. The results indicated that the humidity plays a key role in the reaction between hydrated limeLime and SO2. The morphological analysis and surfaceSurface area results showed that the limeLime samples have significant changes in their topological and surfaceSurface properties, which influences the amount of SO2 capture. The X-ray photoelectron spectroscopy results complement those of the chemical changes due to the influence of low reaction temperature on the surfaceSurface of hydrated limeLime. In this article, the results are presented which demonstrate the impact of various factors at low temperatureLow temperature.