Treatment of gaseous hydrogen chloride using Mg-Al layered double hydroxide intercalated with carbonate ion

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19 Citations (Scopus)

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 CO32- (CO3·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 H2O. In addition, the degree of HCl removal increases with increasing temperature, CO3·Mg-Al LDH quantity, HCl concentration, and improved contact between CO3·Mg-Al LDH and HCl gas. The treatment of HCl gas by CO3·Mg-Al LDH leads to the production of Mg-Al LDH intercalated with Cl-. Further, HCl is also absorbed on the surface of CO3·Mg-Al LDH. Our proposed treatment method works effectively for the treatment of gaseous HCl from incinerator streams.

Original languageEnglish
Pages (from-to)658-662
Number of pages5
JournalChemosphere
Volume81
Issue number5
DOIs
Publication statusPublished - 2010 Oct

Keywords

  • Gaseous HCl
  • HCl removal
  • Mg-Al layered double hydroxide
  • Treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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