Comprehensive Experimental and DFT Studies on the Effect of Sodium and Calcium on Heavy Metals Adsorption Performance by Quartz During Coal Combustion.

However, a decreasing trend in the immobilization rates of Zn, Pb, Cu, and Cd was observed at 3%, 4%, and 5% Na 2 CO 3 content, which may result from the change in the physicochemical properties of the mineral after the capture of Na by the SiO 2 .

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The percentage of HMs in the leachable state showed an increasing trend with increasing CaO addition ( Figure 2 c).

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