Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1997-06-06
1999-01-26
Woo, Jay H.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210723, 210754, 210772, 423 6, 423 8, 423DIG14, 976DIG383, C02F 142
Patent
active
058634398
ABSTRACT:
A process for preconcentrating and separating radium from a contaminated solution containing at least water and radium includes the steps of adding a quantity of a water-soluble macrocyclic polyether to the contaminated solution to form a combined solution. An acid is added to the combined concentration of about 0.5M. The acidic combined solution is contacted with a sulfonic acid-based strong acid cation exchange medium or a organophilic sulfonic acid medium having a plurality of binding sites thereon to bind the radium thereto and to form a radium-depleted solution. The radium-depleted solution is separated from the strong acid cation exchange medium or organophilic sulfonic acid medium. The radium remaining bound to the exchange medium or organophilic reagent is then stripped from the exchange medium or organophilic medium and the activity of the radium is measured.
REFERENCES:
patent: 4431609 (1984-02-01), Scheitlin
patent: 4726938 (1988-02-01), Rollat et al.
patent: 4917825 (1990-04-01), McDowell et al.
patent: 5076936 (1991-12-01), Metz
patent: 5196124 (1993-03-01), Connor et al.
patent: 5322644 (1994-06-01), Dunn et al.
patent: 5702608 (1997-12-01), Foos et al.
patent: 5728302 (1998-03-01), Connor et al.
Turler, A. et al., Radiochim. Acta, 43:149-152 (1988).
Benzi, P. et al., Nucl. Chem. Lett., 164:211-220 (1992).
Volpe, A.M. et al., Anal. Chem., 63:913-916 (1991).
Yamamoto, M. et al., Radiochim. Acta, 55:163-166 (1991).
Clifford, D.A. et al., Health Phys., 62:413-422 (1992).
Horwitz et al., Analytica Chimica Acta, 283:361-372 (1993).
Bartsch Richard A.
Chiarizia Renato
Dietz Mark
Horwitz E. Philip
ARCH Development Corporation
Morrison Betsey J.
Woo Jay H.
LandOfFree
Process for separation and preconcentration of radium from water does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for separation and preconcentration of radium from water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for separation and preconcentration of radium from water will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1447289