Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1979-11-29
1981-09-08
Valentine, Donald R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204130, 204151, C25C 100, C02F 146
Patent
active
042883032
ABSTRACT:
An electrochemical processing system is provided. The system comprises an electrochemical cell having a first compartment adapted to contain a first solution, a first counter electrode and a first reference electrode in contact with the first solution, a second compartment adapted to contain a second solution, a second counter electrode and a second reference electrode in contact with the second solution, and a porous bi-polar barrier electrode separating the first and second compartments. The barrier electrode voltage is fixed at ground. By fixing the potential on the first compartment side of the porous barrier electrode at a first potential verses the first reference electrode while the potential on the second compartment side of the porous barrier electrode is maintained at a second (different) potential verses the second reference electrode, the porous barrier electrode can be used as a gate for specific electroactive species. The electrochemical system of the present invention has particular utility in connection with the removal of heavy metals from waste water and sewage and sludge; the system may also be employed to drive synthetic chemical reactions.
REFERENCES:
patent: 3919062 (1975-11-01), Lundquist, Jr. et al.
patent: 3969215 (1976-07-01), Zievers
patent: 4160711 (1979-07-01), Nishizawa et al.
Environmental Sciences Associates, Inc.
Valentine Donald R.
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