Abstract
It is important to treat gaseous HCl from incineration streams efficiently to avoid adverse environmental consequences. In this paper, a new treatment method for gaseous HCl is presented—the application of Mg−Al layered double hydroxide (LDH) intercalated with CO 3 2 - (CO 3·Mg−Al LDH) to treat gaseous HCl continuously. The degree of HCl removal without water vapor is higher than that with water vapor; further, this reaction does not require H 2O. In addition, the degree of HCl removal increases with increasing temperature, CO 3·Mg−Al LDH quantity, HCl concentration, and improved contact between CO 3·Mg−Al LDH and HCl gas. The treatment of HCl gas by CO 3·Mg−Al LDH leads to the production of Mg−Al LDH intercalated with Cl −. Further, HCl is also absorbed on the surface of CO 3·Mg−Al LDH. Our proposed treatment method works effectively for the treatment of gaseous HCl from incinerator streams.
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