Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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

The authoritative public forum
for Metal Finishing since 1989
-----

HCN gas production with chlorine addition

2001

I am trying to develop a small scale system to reduce levels of cyanide in waste water from ~200 ppb to less than 50 ppb. I have found in my research that chlorine addition to remove cyanide, if not alkaline, can produce HCN gas.

My questions: is a 200 ppb level in the water a concern for gas cyanide gas production? Do other processes such as aeration cause this release of HCN gas or is it limited to chlorine?

Thanks,

Matt Vick
- Marion, Illinois, USA

(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: