C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/89, 204/114.
C25B 15/08 (2006.01) C01D 3/14 (2006.01) C02F 1/461 (2006.01) C02F 1/467 (2006.01) C25C 7/00 (2006.01)
Patent
CA 1089797
ABSTRACT OF THE DISCLOSURE Small amounts of mercury are removed from an aqueous electrolyte solution containing sodium chloride, by recycling the solution through a chamber at a temperature of about 5° to about 98°C while subjecting the solution to the action of a direct current maintained between an anode and a cathode bed both located above the lower portion of the chamber, the cathode bed being below the anode and comprised of conductive fibers having a diameter of about 40 to about 1,000 microns and extending throughout a complete cross-section of the chamber. Dissolved mercury is electrodeposited from the solution in the cathode bed and drops therefrom by gravitational force. The mercury is collected in the bottom of the chamber and is periodically removed therefrom. The invention also provides an electrolytic apparatus for carrying this process, which comprises a liquid containing means having liquid inlet means and liquid outlet means; an anode located at the outlet means; a cathode comprised of conductive fibers having a diameter of about 40 to about 1,000 microns, located at the inlet means; gas outlet means mercury metal outlet means: and electrical means connected to the anode and cathode for passage of a direct current between the anode and cathode. The invention is particularly suited for the removal of mercury contamination from liquid brine streams.
258443
Argade Shyam D.
Balko Edward N.
Basf Wyandotte Corporation
Robic Robic & Associes/associates
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