Method of restoring arsenic-contaminated soil using alkaline-ultrasonic washing and magnetic separation
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United States of America Patent
Stats
-
Aug 14, 2018
Grant Date -
Apr 13, 2017
app pub date -
Jan 12, 2016
filing date -
Oct 8, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided is a method of restoring arsenic-contaminated soil. In the present invention, arsenic may be easily separated from soil particles by washing the arsenic-contaminated soil by using a basic solution and simultaneously irradiating the soil with ultrasonic waves. Also, since iron oxide and manganese oxide are exposed to the basic solution by dissolving a portion of the surface of a silicate mineral using the basic solution, a residual form of arsenic may be removed.
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International Classification(s)
- 2016 Application Filing Year
- B03C Class
- 268 Applications Filed
- 189 Patents Issued To-Date
- 70.53 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- B03C Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 14, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 14, 2030 |
