Removal of sulfuroxyanions by magnesium aluminium oxides and their thermal decomposition

Tsugio Sato; Mikako Tezuka; Tadashi Endo; Masahiko Shimada

doi:10.1002/jctb.280390408

Removal of sulfuroxyanions by magnesium aluminium oxides and their thermal decomposition

Tsugio Sato, Mikako Tezuka, Tadashi Endo, Masahiko Shimada

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The behaviour of the removal of the sulfuroxyanions, SO²⁻₄, S₂O²⁻₃, S₂O²⁻₆ and S₄O²⁻₆, in aqueous solutions by Mg_0.61Al_0.26□_0.13O (□: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 language	English
Pages (from-to)	275-285
Number of pages	11
Journal	Journal of Chemical Technology & Biotechnology
Volume	39
Issue number	4
DOIs	https://doi.org/10.1002/jctb.280390408
Publication status	Published - 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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/jctb.280390408

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title = "Removal of sulfuroxyanions by magnesium aluminium oxides and their thermal decomposition",

abstract = "The behaviour of the removal of the sulfuroxyanions, SO2−4, S2O2−3, S2O2−6 and S4O2−6, in aqueous solutions by Mg0.61Al0.26□0.13O (□: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.",

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author = "Tsugio Sato and Mikako Tezuka and Tadashi Endo and Masahiko Shimada",

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AU - Sato, Tsugio

AU - Tezuka, Mikako

AU - Endo, Tadashi

AU - Shimada, Masahiko

PY - 1987/1/1

Y1 - 1987/1/1

N2 - The behaviour of the removal of the sulfuroxyanions, SO2−4, S2O2−3, S2O2−6 and S4O2−6, in aqueous solutions by Mg0.61Al0.26□0.13O (□: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.

AB - The behaviour of the removal of the sulfuroxyanions, SO2−4, S2O2−3, S2O2−6 and S4O2−6, in aqueous solutions by Mg0.61Al0.26□0.13O (□: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.

KW - Magnesium aluminium oxide

KW - hydrotalcite

KW - rock salt type structure

KW - sulfuroxyanions, intercalation

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Removal of sulfuroxyanions by magnesium aluminium oxides and their thermal decomposition

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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