mgargatti

Topic: what is porous pot?

i would like to know more about porous pot that can remove iron form chromic acid solution and its availibilty in INDIA

jimtrottier

Re: what is porous pot?

I am not sure what you are looking for, most metals will precipate by dropping the PH and then raising above eight. Are you looking for a bath treatment or a wastewater fix?

Jim

DustinGebhardt

Re: what is porous pot?

A porous pot is a filtration system for chromic acid baths. I've used them very successfully for decorative chrome plating baths that were very susceptible to metallic contamination. It basically consists of a ceramic container with anodes and cathodes within and without. You fill the ceramic container with solution (usually a small portion of the bath) and immerse the container in the bath (or another small tank where the bath solution gets continuously circulated into and out of). When you apply current, it draws the metallic contamination into the ceramic chamber, which you can then easily dump. They've worked well for me, however the ceramic pot does tend to plug and blind. They say that you can apply a brief instance of high voltage in the reverse of the normally applied voltage. This has not worked consistently for me. But, like any other filtration device, when it is maintained, it works well.


I don't know if it is available in India. Check with your local hard chrome supplier, as that is who provided me the systems here in the US.

-Dustin Gebhardt, CEF

Advanced Manufacturing/Finishing Engineer

Moen

Sanford, NC