Removal of metal complex dyes from wastewaters

Details Removal of metal complex dyes from wastewaters Removal of metal complex dyes from wastewaters

1992-09-03

1993-04-13

Silverman, Stanley S.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210917, 8440, C02F 126

Patent

active

052020282

ABSTRACT:
Metal complex dyes which are free of reactive groups and have at least one hydroxysulfonyl group are removed from wastewaters by means of amines of at least 6 carbon atoms in the presence or absence of water-immiscible inert organic solvents.

REFERENCES:
patent: 1297046 (1919-03-01), Wall
patent: 3502577 (1970-03-01), Hutchins et al.
patent: 3829380 (1974-08-01), Oohara
patent: 3947248 (1976-03-01), Powers
patent: 4000069 (1976-12-01), Fusco
patent: 4165288 (1979-08-01), Teed et al.
patent: 4753732 (1988-06-01), Davis et al.

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