Removal of thiosulfate from hydrosulfite solutions

Details Removal of thiosulfate from hydrosulfite solutions Removal of thiosulfate from hydrosulfite solutions

1990-12-21

1991-07-23

Morris, Theodore

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

423512A, 423515, 423517, C01D 516

Patent

active

050342029

ABSTRACT:
A process for treating an alkali metal hydrosulfite solution which comprises contacting the alkali metal hydrosulfite solution, having a residual alkalinity of from about 1 to about 20 grams per liter of hydroxide ion, with aluminum. The process of the invention can be operated at low temperatures i.e., those which are normally used for storage of the sodium hydrosulfite solution to minimize thermal decomposition.

REFERENCES:
patent: 3216791 (1965-11-01), Hansley et al.
patent: 3523069 (1970-08-01), Oloman
patent: 3961034 (1976-06-01), Bostian et al.
patent: 4157980 (1979-06-01), Tiethof
patent: 4590058 (1986-05-01), Cawlfield
F. Foerster and E. T. Mommsen, Chem. Ber. 57, pp. 258-263 (1924); Chem. Abstracts 18,1254 (1924).

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