No passwords, No popups, No cost
we earn from your eBay & Amazon purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
curated with aloha by
ted_yosem
Ted Mooney, P.E. RET
- Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

Treatment of Waste Solutions





2001

I am a chemist working in the electroplating industry. I am interested in the treatment of both rinse and process solutions. The treatment of complexed cyanide (cadmium & Iron)solutions and chrome VI solutions.

I would like to communicate to someone who is treating such solutions so we can be of help to each other.

I would appreciate any ideas.

Bernard Irving
- United Kingdom



It is a common practice to treat diluted cyanide solutions with a strong hypochlorite (bleach) solution bleach/sodium hypochlorite in bulk on eBay or Amazon [affil links] . Cyanide is transformed to a cyanate in this reaction. However, if iron is present then the process becomes more complicated. Details about this process has been discussed in some letters previously published in finishing.com.

As for hex chrome solutions, you may obtain more information from a company called Rohm & Haas. They sell specific resins for extracting hex chrome ions and also a chemical called "Kolene" for transforming hex chrome to a neutral complex.

Ajit Menon
- Alden, New York
2001




(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:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"