-- The Home Page of the Finishing Industry
  HOMEFAQsBOOKSHelpWantedAdvertiseContactFORUM Letter 14288

The Hotline: Serious Education ... plus the most fun you can have in metal finishing. Ted Mooney, Webmaster

Removing copper from nickel anodes


Hello There,

Is there any compound (except cyanides) I could use to remove (strip) copper from nickel anodes. Copper from our bus bars contaminated the nickel anodes.


Ernesto Rodas
- Chicopee, Massachusetts


You could try a stabilized hydrogen peroxide and sulfuric acid solution. About 10% stabilized peroxide and about 3-5% sulfuric at about 100F should work pretty quickly.

Dan Brewer
chemical process supplier - Gurnee, Illinois

First of two simultaneous responses --  

I stumbled upon a really quick and efficient way to strip copper from nickel anodes. It's probably more expensive than the peroxide/sulfuric method, but it's nearly instantaneous and can be done at room temp in a bucket.

I used 0.1 N potassium iodate solution and a little bit of 5% HCl to start the reaction. We use potassium iodate in the lab for tin titrations - it was handy and worked very well.

Debra Mansperger
- Chandler, Arizona, USA

Second of two simultaneous responses --  


Ammonia in any concentration above 20% will dissolve copper without affecting nickel. Only problem is its obnoxious odor and difficulty to waste treat.

Good luck.

Guillermo Marrufo
Monterrey, NL, Mexico

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & DevicesUsed & Surplus

©1995-2015     -    Privacy    -    Search