Treatment of effluents

Details Treatment of effluents Treatment of effluents

1978-09-15

1979-07-31

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 47, 204109, C25C 120

Patent

active

041629507

ABSTRACT:
A process for recovering platinum group metal present as a stable complex dissolved in an aqueous effluent from a platinum group metals refinery which comprises (1) adjusting the pH of the effluent to an alkalinitz of at least 10; (2) heating to above 60.degree. C.; (3) electrolyzing the effluent at said alkalinitz and temperature using an anode potential having a half-cell voltage of at least 7.5 volts and current density of at least 0.2 A/cm.sup.2 so as to break down said complex by anodic oxidation and precipitate metal present in the complex; and (4) filtering off the precipitated metal.

REFERENCES:
patent: 3244605 (1966-04-01), Hotchkiss et al.
patent: 3551318 (1970-12-01), Snook et al.
patent: 3649485 (1972-03-01), Chisholm
patent: 3784456 (1974-01-01), Otto
patent: 3875039 (1975-04-01), Matusek et al.
patent: 4102758 (1978-07-01), Gerber et al.

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