Fixation of arsenic in soil

Details Fixation of arsenic in soil Fixation of arsenic in soil

1985-02-15

1988-02-09

Sneed, Helen M. S.

Chemistry: fertilizers

Processes and products

Forms or conditioning

556 61, 556149, 556183, A01N 5502, C07F 968

Patent

active

047239921

ABSTRACT:
The present invention represents compositions for the fixing of pentavalent arsenic, e.g., arsenates and arsenic acid, generally spread in the soil. The fixation is so carried out that the arsenic cannot be further spread, not even after an eventual further increase in soil acidity. The compositions comprise metal salts of iron, aluminum or chromium with a weak acid, preferably iron or aluminum acetate, which are spread on the soil containing the arsenic compounds.

REFERENCES:
patent: 801158 (1905-10-01), Reiss
patent: 1030747 (1912-06-01), Quade
patent: 1054735 (1913-03-01), Wolff
patent: 2650239 (1953-08-01), Stover
patent: 3317574 (1967-05-01), Morita et al.
patent: 3576762 (1971-04-01), Maquet-Martin et al.
patent: 3957598 (1976-05-01), Morse
patent: 3983214 (1976-09-01), Misato et al.
patent: 4404146 (1983-09-01), Lionelle et al.

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