Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1995-06-28
1997-08-12
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204237, 204260, 204263, 204272, 204275, C25F 700
Patent
active
056561407
ABSTRACT:
An electrochemical remediation apparatus comprising a cylindrical tank having a plurality of vertical anodes suspended downwardly from a dome-shaped lid and positioned around the circumference of the tank spaced radially inwardly from the inner sidewalls of the tank. A single cathode is positioned at the axis of the cylindrical tank and removably mounted to the lid. A cylindrical metal ion permeable membrane is positioned between the anodes and the cathode. A plurality of nozzles spaced circumferentially around the tank directs pressurized fluid into the tank at a direction having radial, axial and circumferential components. A mixture of water, acid and contaminated earth consisting of approximately 50% contaminated earth is poured into the region between the membrane and the tank sidewalls. The mixture is incubated and fluidized, and contact between metals in the mixture and the anodes causes the metal contaminants to act as sacrificial anodes and thereby to ionize. The metal cations are electrostatically attracted to the central cathode and deposit thereon.
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Hughes Kenneth D.
Oesterle John H.
Chamberlain Ltd., Inc.
Foster Frank H.
Mee Brendan
Niebling John
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