Removal of sulfuroxyanions by magnesium aluminium oxides and their thermal decomposition

Tsugio Sato, Mikako Tezuka, Tadashi Endo, Masahiko Shimada

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The behaviour of the removal of the sulfuroxyanions, SO2−4, S2O2−3, S2O2−6 and S4O2−6, in aqueous solutions by Mg0.61Al0.260.13O (□:vacancy) was investigated at 40–80°C. All the sulfuroxyanions were removed from solution competitively with OH to form the hydrotalcite‐like compounds. The rate of the removal was first order with respect to the concentration of the sulfuroxyanion in the solution, and the apparent activation energy was about 60 kJ mol−1. All the sulfuroxyanions intercalated in the interlayer of hydrotalcite structure decomposed to SO2−4 at 100–300°C.

Original languageEnglish
Pages (from-to)275-285
Number of pages11
JournalJournal of Chemical Technology & Biotechnology
Volume39
Issue number4
DOIs
Publication statusPublished - 1987 Jan 1

Keywords

  • Magnesium aluminium oxide
  • hydrotalcite
  • rock salt type structure
  • sulfuroxyanions, intercalation

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

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