Removal of bromides from arsenic acid solution

Details Removal of bromides from arsenic acid solution Removal of bromides from arsenic acid solution

1982-08-26

1984-05-08

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group va metal or arsenic

423500, 423502, 423617, 210759, 210760, 204103, C01B 2900

Patent

active

044474059

ABSTRACT:
Bromide ions when used as the redox intermediates in the oxidation of arsenic (III) oxide to arsenic (V) acid can be removed from a solution having a major proportion of arsenic acid by treatment with an oxidant selected from H.sub.2 O.sub.2, O.sub.3 or Cr(VI) to oxidize the bromide to bromine followed by purging with air, nitrogen or other inert gas to sweep out the resultant bromine. The bromine can be recovered and recycled to a fresh batch of arsenic (III) oxide.

REFERENCES:
patent: 1125086 (1915-01-01), Fuller
patent: 1974747 (1934-09-01), Latimer
patent: 3044862 (1962-07-01), Paul
patent: 3179498 (1963-12-01), Harding et al.
patent: 4372828 (1983-02-01), Ahn

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