Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2005-04-19
2005-04-19
Hopkins, Robert A. (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S682000, C210S747300
Reexamination Certificate
active
06881347
ABSTRACT:
The natural ability of an aquifer formation to remove radionuclides from ground water is recharged by injecting a leaching solution a well. The leaching solution replaces the radionuclides at natural sorption sites in the aquifer formation with ions that can be displaced subsequently by other radionuclides in the ground water. The leaching solution remains in the aquifer formation for a given period of time after which it is pumped out through the well. Thereafter, as water is pumped from the well, other radionuclides become lodged at the sorption sites in the aquifer formation thus being removed from the water.
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Butler Daniel R.
Jansen John R.
Schultz Steven H.
Haas George E.
Hopkins Robert A.
Quarles & Brady LLP
Ruekert & Mielke, Inc.
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