Working up wastewaters containing hydroxylamine or its salts

Details Working up wastewaters containing hydroxylamine or its salts Working up wastewaters containing hydroxylamine or its salts

1987-03-06

1988-02-16

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

423387, C02F 142

Patent

active

047253606

ABSTRACT:
Wastewaters containing hydroxylamine or its salts are worked up by a process in which the said wastewaters are passed over a strongly acidic ion exchanger, after which a 5-15% strength by weight aqueous sulfuric acid is passed over the said ion exchanger and a solution of hydroxylammonium sulfate in aqueous sulfuric acid is obtained.

REFERENCES:
patent: 3568833 (1971-03-01), Ritzen
patent: 4147623 (1979-04-01), Koff et al.
patent: 4202765 (1980-05-01), Koff et al.

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