Method of removing heavy metals from solutions of amino-carboxylic acids for disposal purposes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 1995
Grant Date -
N/A
app pub date -
Sep 8, 1994
filing date -
Sep 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a method to remove heavy metals from amino-carboxylic acid chelate solutions comprising adding nitrous acid to lower the pH of the aqueous solution sufficient to destroy the chelate bonds and release the metal ions and thereafter adding an appropriate strong base and optionally a sulfide salt to precipitate the liberated heavy metals.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully