Ion emplasement in soil with chim electrodes

Details Ion emplasement in soil with chim electrodes Ion emplasement in soil with chim electrodes

1995-09-07

1997-08-12

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204516, 204517, 205687, 205742, 205746, 205771, 205772, B01D 6142

Patent

active

056561440

ABSTRACT:
An apparatus and method for soil remediation replaces specific ions in the soil electrochemically, using a DC voltage source and special multicompartment anodes and cathodes, each comprising an inner compartment containing electrolyte and a submerged electrode, a salt bridge connecting the electrolyte to an outer compartment containing a specific solution with replacement ions for soil remediation, and a membrane holding in the replacement solution. The membrane is put into contact with the soil, allowing electrical contact and ion migration while keeping the solution inside the anode or cathode. The multicompartment structure prevents the hydroxide and hydronium ion emplacement that causes acid and base fronts to form.

REFERENCES:
patent: 2636852 (1953-04-01), Juda et al.
patent: 3505196 (1970-04-01), Dahms
patent: 5074986 (1991-12-01), Probstein et al.
patent: 5405509 (1995-04-01), Lomansney
Smith et al, "Preliminary Studies of the CHIM Electrochemical Method at the Kokomo Mine, Russell Gulch, Colorado", J. of Geochemical Exploration, 46 (1993) pp. 257-278.

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