Method of cleaning heavy metals-containing soil
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United States of America Patent
Stats
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Nov 9, 2010
Grant Date -
Mar 20, 2008
app pub date -
Sep 9, 2005
filing date -
Sep 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
genus, and, at the same time, adding a biodegradable chelating agent to a contaminated soil in order to assist the absorption. And, a biodegradable chelating agent having the high heavy metal dissolving out ability not only enhances the cleaning efficacy but also reduces secondary influence on the environment.
First Claim
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International Classification(s)
- C12S:PROCESSES USING ENZYMES OR MICRO-ORGANISMS TO LIBE....
- C12P:FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESI....
- B09C:RECLAMATION OF CONTAMINATED SOIL
- A62D:CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES ....
- B09B:DISPOSAL OF SOLID WASTE
- C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
- 2005 Application Filing Year
- C12S Class
- 3 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C12S Class
- 0 % this patent is cited more than
- 15 Age
