Process and solvent for extraction of the chromates present in a

Details Process and solvent for extraction of the chromates present in a Process and solvent for extraction of the chromates present in a

1982-03-15

1984-05-01

Hruskoci, Peter A.

Liquid purification or separation

Processes

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

204 95, 204DIG13, 210913, 423 54, B01D 1100

Patent

active

044460260

ABSTRACT:
The invention relates to a process and a solvent for extraction of the chromates present in an aqueous solution. According to the invention, the aqueous phase is brought into contact with an organic phase comprising 2 to 10% by volume of a solvent selected from the group of tertiary or quaternary amines and 15 to 40% of a solvent selected from the group of esters of phosphoric acid in a diluent based on petroleum hydrocarbons. The invention is applicable to the production of concentrated solutions of chromates easily recyclable from an extraction of the chromates contained in an industrial solution.

REFERENCES:
patent: 3856917 (1974-12-01), Texier et al.
patent: 3857919 (1974-12-01), Hazen et al.
patent: 3875285 (1975-04-01), Nyman et al.
patent: 4029734 (1977-06-01), Stauter et al.
patent: 4344924 (1982-08-01), Lucas et al.
patent: 4349514 (1982-09-01), Watanabe et al.

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