# US 10,370,270 B2 · Electrodes for cost-effective bio-electrochemical systems

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- Number: US 10,370,270 B2
- Document ID: US10370270B2
- Status: Granted
- Kind: B2
- Application number: 14/551,462
- Filed: 2014-11-24
- Published: 2015-05-28
- Granted: 2019-08-06
- Earliest claimed: 2013-11-22
- Applicants: Cambrian Innovation, Inc.
- Inventors: Matthew Silver; Justin Buck; Casey Chartier; Mark Barosky; James Ryan Hawkins; Zhen Huang; Quynh Anh Le Tran; Tzipora Wagner
- Web page: https://patentgrep.com/patent/US10370270B2

## CPC

- C02F 1/46109: {Electrodes}
- C25D 13/20: Pretreatment
- C25D 13/22: Servicing or operating {apparatus or multistep processes}
- H01M 4/9075: {Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence)}
- H01M 8/16: Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
- C02F 3/005: {Combined electrochemical biological processes (aeration by electrolytically produced oxygen bubbles C02F3/202)}
- C02F 11/006: {Electrochemical treatment, e.g. electro-oxidation or electro-osmosis}
- C02F 2001/46133: {characterised by the material}
- C02F 2001/46142: {Catalytic coating}
- C02F 2001/46152: {characterised by the shape or form}
- C02F 2001/46161: {Porous electrodes}
- C02F 2201/4611: Fluid flow
- Y02E 50/30: Fuel from waste, e.g. synthetic alcohol or diesel
- Y02E 60/50: Fuel cells
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An electrode for use in bio-electrochemical systems is described, including: a substantially planar electrode material; a frame comprising a non-conductive substance; and one or more first conductive substances linked or secured to the frame. Bio-electrochemical systems, racks for inserting the electrode, and methods of using the racks are also described.

## Claims

### Claim 1

A bio-electrochemical system, comprising:
at least one reactor chamber;
at least one electrode cassette comprising at least one removable working electrode, the cassette configured to allow removal of the at least one removable working electrode;
at least one counter electrode; and
a rack disposed within the reactor chamber and comprising one or more securing mechanisms,
wherein the at least one electrode cassette and the at least one counter electrode are disposed in the rack through the one or more securing mechanisms.

### Claim 2 (depends on 1)

The system of claim 1, wherein the working electrode is in electrical communication with the rack.

### Claim 3 (depends on 1)

The system of claim 1, wherein the securing mechanism is a slotted groove or fastener.

### Claim 4 (depends on 1)

The system of claim 1, wherein the rack comprises a conductive substance.

### Claim 5 (depends on 1)

The system of claim 1, wherein the rack comprises stainless steel.

### Claim 6 (depends on 1)

The system of claim 1, wherein the rack comprises one or more hydraulic distribution elements.

### Claim 7 (depends on 1)

The system of claim 1, wherein the rack comprises baffles.

### Claim 8 (depends on 1)

The system of claim 1, wherein the rack comprises one or more fluid-collection elements.

### Claim 9 (depends on 1)

The system of claim 1, wherein the rack comprises one or more connection points for hoisting.

### Claim 10 (depends on 1)

The system of claim 1, wherein the rack comprises features for gas injection.

### Claim 11 (depends on 1)

The system of claim 1, wherein the rack comprises features for reference electrode installation.

### Claim 12 (depends on 1)

The system of claim 1, wherein the rack further comprises one or more sensors for collecting system information.

### Claim 13 (depends on 1)

The system of claim 1, wherein the rack further comprises one or more elements for wiring integration.

### Claim 14 (depends on 1)

The system of claim 1, wherein the rack further comprises a gas injection manifold.

### Claim 15 (depends on 1)

The system of claim 1, wherein the rack is disposed at the top region of the reactor chamber.

### Claim 16 (depends on 15)

The system of claim 15, wherein the bottom region of the reactor chamber is configured for sludge based digestion.

### Claim 17 (depends on 1)

The system of claim 1, wherein the one or more securing mechanisms comprises one or more slotted grooves.

### Claim 18 (depends on 1)

The system of claim 1, wherein the one or more securing mechanisms comprises one or more fasteners.

### Claim 19 (depends on 1)

The system of claim 1, wherein the at least one reactor chamber comprises sides forming grooves.

### Claim 20 (depends on 1)

The system of claim 1, wherein the cassette comprises a removable working electrode, removable counter electrodes, current collectors, electrode frames, non-conductive spacer elements, and electrical wiring and circuitry.

### Claim 21 (depends on 1)

The system of claim 1, wherein the cassette comprises a removable working electrode, removable counter electrodes, electrode frames, and non-conductive spacer elements.
