US3755114A
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Decreasing the metallic content of liquids by an electrochemical technique
Assignee: Hooker Chemical Corp
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Filing: 1971-04-14
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Granted: 1973-08-28
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Expires: 1991-04-14
Abstract
Abstract A method for decreasing the metallic content of a solution which comprises passing an electric current through a solution containing metallic material, which solution is contained as the electrolyte in a cell, said cell having at least one positive and one negative electrode, between which the current is passed, and wherein the electrolyte also contains a bed of particles, distributed therein, such that the porosity of the bed is from about 40 to 80%, porosity being defined as The electrolysis of the electrolyte is continued until the desired reduction in the metallic content thereof is obtained.
Inventors
- 👤 M Tarjanyi
- 👤 M Strier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:36
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4676; C02F1/4678; C02F2101/00; C02F2101/10; C02F2101/20; C02F2101/22; Y; Y10; Y10S; Y10S204/00; Y10S204/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
15 words
The method as claimed in claim 1 wherein the electrolyte solution is an aqueous solution.
Claim 2
Dependent Claim
31 words
The method as claimed in claim 2 wherein the initial concentration of the metallic material in the electrolyte solution is from about 1 part per million to 10 percent by weight.
Claim 3
Dependent Claim
26 words
The method as claimed in claim 1 wherein the particles distributed in the electrolyte solution have a density which is greater than that of the electrolyte.
Claim 4
Dependent Claim
18 words
The method as claimed in claim 1 wherein the particles distributed in the electrolyte solution are conductive particles.
Claim 5
Dependent Claim
12 words
The method as claimed in claim 5 wherein the particles are graphite.
Claim 6
Dependent Claim
31 words
The method as claimed in claim 1 wherein the particles are distributed within the electrolyte by flowing the electrolyte through the electrolytic cell in a direction opposed to the gravitational forces.
Claim 7
Dependent Claim
24 words
The method as claimed in claim 7 wherein the electrolyte flow velocity through the cell is from about 0.1 to 1,000 centimeters per second.
Claim 8
Dependent Claim
27 words
The method as claimed in claim 1 wherein metal in the electrolyte is lead and the eLectrolyte solution has a pH of from about 4 to 7.
Claim 9
Dependent Claim
28 words
The method as claimed in claim 1 wherein the metal in the electrolyte is mercury and the electrolyte solution has a pH of from about 6 to 13.
Claim 10
Dependent Claim
22 words
The method as claimed in claim 1 wherein the porosity of the bed of particles is from about 55 to 75 percent.
Claim 11
Dependent Claim
22 words
The method as claimed in claim 11 wherein the porosity of the bed of particles is from about 60 to 70 percent.
Claim 12
Dependent Claim
26 words
The method as claimed in claim 1 wherein the separation between the positive and negative electrode within the cell is from about 0.1 to 5.0 centimeters.
References Cited (Backward Citations)
US543673A
Cited
US698292A
Cited
US3457152A
Cited
FR1500269A
Cited
US3616356A
Cited
FR1584158A
Cited
US3616275A
Cited
US3616276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |