Extraction of pollutants by inorganic chelation

Details Extraction of pollutants by inorganic chelation Extraction of pollutants by inorganic chelation

1987-12-28

1989-05-09

Sever, Frank

Liquid purification or separation

Processes

Ion exchange or selective sorption

210691, 210751, 210765, B01D 1502, B01D 1504

Patent

active

048287121

ABSTRACT:
In a method for removing an inorganic pollutant from contaminated waters, the pollutant is extracted by contact with a chelating agent to form a metal chelate complex. The metal chelate complex is then contacted with a regenerating agent which regenerates the chelating agent for reuse and prepares the inorganic pollutant for removal.

REFERENCES:
patent: 3984520 (1976-10-01), Cardwell et al.
patent: 4012483 (1977-03-01), Kane et al.
patent: 4051230 (1977-09-01), Miyauchi
patent: 4178235 (1979-12-01), Wilson
patent: 4500495 (1985-02-01), Hubred et al.
D. J. Turner, "The Feasibility of a New Method for Maintaining Clean Conditions in Once-Through Boilers," J. Appl. Biotechnol., 22, 983-992 (1972).
David J. Turner, "Chelate Formation in High Temperature Steam," J. Appl. Chem. Biotechnol., 22, 689-695 (1972).
Motojima et al., "Removal of Radiocobalt in Waste Water by Activated Charcoal Using Oxine as a Chelating Agent," Annals of Nuclear Energy, vol. 5, pp. 5-12, Pergamon Press (1978).

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