Method for working up aqueous residues from metallizing baths

Details Method for working up aqueous residues from metallizing baths Method for working up aqueous residues from metallizing baths

1978-03-29

1979-03-13

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 10, 204 52R, 204152, C25C 112, C02C 512

Patent

active

041441494

ABSTRACT:
A method for purifying aqueous residues from exhausted metallizing baths, which contain at least one amino compound as a complex-forming agent, which comprises anodically treating the aqueous residue containing heavy metal ions and complex-forming agent at a voltage, current density and time sufficient to eliminate the complexing ability of the amino compound, and removing the heavy metal ions from said aqueous residue.

REFERENCES:
patent: 3748240 (1973-07-01), Johnson et al.
patent: 3784455 (1974-01-01), Parikh et al.
patent: 3827964 (1974-08-01), Okubo et al.
patent: 3899405 (1975-08-01), Iverson et al.
patent: 3970531 (1976-07-01), Recht
patent: 4052276 (1977-10-01), Yoshida et al.
patent: 4072596 (1978-02-01), Moeglich

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