Silver bath waste treatment apparatus and method

Details Silver bath waste treatment apparatus and method Silver bath waste treatment apparatus and method

1993-01-29

1995-04-25

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204109, 204149, 204237, 204267, C25C 112, C25C 120, C25B 1500

Patent

active

054095824

ABSTRACT:
Apparatus and methods for removing silver and copper ions from purge streams from silver replacement processes by separately electrowinning silver and copper where silver removal is first effected in an electrowinning cell having a cathode/calomel reference electrode potential between -0.1 and -0.4 volts DC followed by copper removal effected in an electrowinning cell having a cathode/calomel reference electrode potential less than -0.5 volts DC. By this method formation of copper (+1) is prevented in the presence of high concentrations of silver, thus minimizing precipitation of silver metal and formation of copper (+2).

REFERENCES:
patent: 4090935 (1978-05-01), Dunning, Jr. et al.
patent: 4564432 (1986-01-01), Nagai et al.
Edmund C. Potter, Electrochemistry, Principles & Applications, Cleaver-Hume Press Ltd., London (1956) pp. 110-112 and 307.

Affiliated with

Also associated with

Rating

Silver bath waste treatment apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silver bath waste treatment apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silver bath waste treatment apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1565473