Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2006-05-09
2006-05-09
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S661000, C210S688000, C210S749000, C210S912000, C210S913000, C210S914000
Reexamination Certificate
active
07041222
ABSTRACT:
A process for the selective removal of toxic heavy metals from a flowing stream of water involves causing the stream to flow through a stationary bed of particulate polymer having amine functional groups, and injecting into the stream, adjacent the upstream extremity of the bed, a substantially continuous flow of carbon disulfide.
REFERENCES:
patent: 4332916 (1982-06-01), Thill
patent: 5336704 (1994-08-01), Rainer
patent: 6403726 (2002-06-01), Ward
patent: 6521340 (2003-02-01), Rainer
patent: 2002/0161122 (2002-10-01), Rainer
Barry Chester T.
Rainer Norman
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