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The Korea Institute of Machinery and Materials had developed a system that filters fine dust in the white smoke emitted from thermoelectric power plants and waste incinerating facilities through simultaneous cooling and absorption.
The condensable fine dust particles, which are emitted as gas at high temperatures, are turned into solid particles as they cool down.
The research team collected smoke of over 100 degrees Celsius, cooled it down to close to room temperature, turned the gas into a liquid, and filtered the moisture to eliminate the fine dust particles.
The research team used a simple cooling system to filter as many condensable fine dust particles as possible from the white smoke and then use additives to absorb the moisture.
The method allowed the research team to filter 70 percent of moisture and 80 percent of fine dust before spraying moisture absorbers one more time to dry off the water.
As a result, up to 85 percent of moisture and fine dust were filtered.
