Synthesis and sulfate ion-exchange properties of a hydrotalcite-like compound intercalated by chloride ions

Akino Tsujimura, Miho Uchida, Akitsugu Okuwaki

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

To reduce the generation of hydrogen sulfide gas from sulfate ions, we synthesized a layered double hydroxide hydrotalcite-like compound intercalated with chloride ions in the interlayer (HT-Cl) using a coprecipitation reaction. The resultant HT-Cl material had a Mg/Al molar ratio of approximately 2, and the molar fraction of the chloride ions on the intercalated anion layer of the HT was 0.90. A higher molar fraction of chloride ions can be inserted into the interlayers of the HT by increasing the initial concentration ratio of chloride ions to aluminum ions [Cl-]0/[Al3+]0 in the solution. Approximately 98% of the sulfate ions in the solution were removed within 10 min after adding 1.12 times the stoichiometric quantity of synthesized HT-Cl, which contained a Mg/Al molar ratio of 2 equal to a solution containing a 12 mM calcium sulfate solution.

Original languageEnglish
Pages (from-to)582-586
Number of pages5
JournalJournal of Hazardous Materials
Volume143
Issue number1-2
DOIs
Publication statusPublished - 2007 May 8

Keywords

  • Anion exchange
  • Chloride ion
  • Hydrotalcite-like compound
  • Sulfate ion

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Fingerprint Dive into the research topics of 'Synthesis and sulfate ion-exchange properties of a hydrotalcite-like compound intercalated by chloride ions'. Together they form a unique fingerprint.

Cite this