The study looked at how to clean sulfur from smokestack emissions using magnesia. They tested different factors like gas flow rate, absorbent concentration, and temperature. They found that the efficiency of sulfur removal depends on the pH of the liquid used. Higher magnesia or magnesium sulfate concentrations improve efficiency, while higher gas flow rates or sulfur dioxide concentrations reduce it. Temperature doesn't have a big impact. The process is mainly controlled by how sulfur dioxide moves between the gas and liquid.