No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

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

-----

Waste Hydrochloric Acid

2002

Hi,

I am working in fastener manufacturing company in Dubai. In phosphate coating process we use hydrochloric acid (31%) for pickling. When the strength of this acid goes low, its pickling becomes insufficient & we have to throw this acid (assay about 12%). For this acid again we need Effluent costs to neutralize etc. Could anybody tell me the recycling process for this to recover acid or any companies who can buy this acid from us.

Regards,

Santosh Zope
- Dubai, UAE.

There are acid additives that can extend the life of the acid. There are also acid recovery systems, but they are usually more suited to steel mill size pickling operations rather than phosphatizing shops. As for selling the acid, I would be amazed if a buyer could be found.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2002

(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: