Adsorbent Materials Commonly Used for Separation of Carbon Dioxide from Flue Gases - A Short Review
In this work, some adsorbents that are used to separate carbon dioxide from flue gases, are investigated since much of carbon dioxide as air pollutant released to the atmosphere is from flue gases. Different types of activated carbons, Zeolites, MCMs, HTlcs, Metal oxides and carbon nanotubes are among the adsorbent that are investigated extensively by scientists. At high temperature and atmospheric pressure, basic alumina and HTlcs show suitable results. Under the same conditions, activated carbon has also shown medium adsorption. Also, impregnation of activated carbon by basic reagent increased carbon dioxide adsorption. Although, activated carbon at high temperature has less uptake than basic alumina, the adsorbent price, availability of raw material and a medium level of adsorption, make activated carbon is more suitable than other adsorbents. Also it is important to consider the type of raw material and activation and impregnation methods that can affect the level of uptake.
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