Electrochemical cell for decreasing the cyanide and heavy metal content of an aqueous solution

Claim 1

An electrochemical cell for continuously and concurrently reducing the cyanide and heavy metal content of an aqueous solution containing the same, comprising: a. a cathode compartment having a bed of electrically conductive particles located therein and a first conduit means located adjacent to said bed of particles to provide liquid communication between said cathode compartment and the exterior of the cell; b. an anode compartment having a bed of electrically conductive particles located therein and a second conduit means located adjacent said bed to provide liquid communication between said anode compartment and the exterior of the cell; c. an electronically nonconductive substantially water impermeable foraminous member located intermediate and separating said cathode and anode compartments, said foraminous member having a plurality of openings, said openings having a median size within the range of from about 10.sup. -6 to 10.sup. -14 square centimeters, said member providing free passage of electrically charged ions between said cathode and anode compartments; d. a liquid passageway located in a spaced relation from said first and second conduit means to provide liquid communication between said cathode compartment and anode compartment; and e. electrical means connected to said anode compartment and cathode compartment for maintaining an applied potential to provide passage of a direct electric current therebetween.