Reagent system for treating mercury-contaminated material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 2024
Grant Date -
Jun 17, 2021
app pub date -
Feb 22, 2021
filing date -
Sep 22, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of treating mercury-contaminated material to obtain a treated product having reduced mercury leachability includes the steps of (a) admixing the mercury-contaminated material with a reagent system comprising calcium sulfide (CaS) and trisodium phosphate (TNaP), wherein the calcium sulfide and trisodium phosphate are preferably provided at a CaS:TNaP ratio of from 2:1 to 1:2, on a dry weight reagent basis, and the reagent system is preferably provided in an amount equal to 0.4% to 5% by weight of the contaminated material; and (b) adding water as needed to achieve a moisture content of at least 5% by weight of the contaminated material.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2021 Application Filing Year
- C01B Class
- 1686 Applications Filed
- 609 Patents Issued To-Date
- 36.13 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C01B Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Feb 6, 2028 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 6, 2032 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 6, 2036 |
