The Last Stand of the web we knew & loved: no cost, no reg'n, no popups
As an Amazon Associate & eBay Partner: we earn from qualifying purchases

finishing.com -- The Home Page of the Finishing Industry

-----

Water treatment with CN

Which is the ideal treatment for an effluent of brass/copper bath with CN (NaCN, CuCN, Zn(CN)2? As I can eliminate the CN and precipitate the metallics ions?

Diogo Cavalcanti
Home Hardware - Caxias do Sul, RS, Brazil
2003

The ideal treatment always depends on the circumstances, Diogo, but the most common treatment is 2-stage alkaline chlorination using either hypochlorite or chlorine gas and sodium hydroxide.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: