-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 9948

Pollution reduction of "Alodine" like method and the use of Chromic acid


We have a process of treating aluminium that is referred to as "Alodine". In Ontario the need for a pollution reduction plan is required to be submitted, to the City of Toronto. They refer to this plan as P2. Our major concern is the use of Chromic acid in the process and it's disposal once it is contaminated. The above plan is looking for methods of reducing this heavy metal by reusing it. The equipment or method is the reason for my inquiry. Is there a commercially available process of re-using and what does it do and it's possible costs.

Thank you.

Luis M [last name deleted for privacy by Editor]
- Scarborough, Ontario, Canada


You and 10 thousand other shops. I'd bite the bullet and look into conversion coatings that are both good and hex-chrome free. I, for one, am a recent convert to the possibility that such a thing exists.

Ted Mooney, Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey


There is a substitute for Iridite/Alodine that has NO chrome in it. It is Sanchem 3000 series.

drew nosti
Drew Nosti, CEF
supporting advertiser
Ladson, South Carolina

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's 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 & unvetted; 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. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.