The present invention CO 2 employment screen relates to the adsorption method in the contaminants using waste cement, comprising the steps of providing a closed cement powder, the waste cement comprising: employing screen the CO 2 to a fine powder and CO 2 is employed the waste cement powder Adsorbing a heavy metal to the. In a method of employing a CO 2 stably and adsorb heavy metals it is provided by the waste by cement.;CO₂Solubilization, Waste Concrete, Waste Cement Fine Powder, CaCO₃, Heavy Metal Adsorption
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