Modular microbial fuel cell electrode reactor

A technology of fuel cell electrodes and microorganisms, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of easy swing, low reaction efficiency, unstable biofilm, etc., to achieve convenient connection, high reaction efficiency, and enhanced denitrification Effect

Active Publication Date: 2014-09-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual sewage treatment, the folded carbon fiber felt has a low specific surface area, low reaction efficiency, and is prone to swing in continuous flow, making the biofilm attached to it unstable.
The sheet-like platinum-loaded carbon paper is easily broken, and the effective reaction area of ​​the sheet-like cathode is small, making the reaction efficiency of the entire microbial fuel cell low.

Method used

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  • Modular microbial fuel cell electrode reactor
  • Modular microbial fuel cell electrode reactor
  • Modular microbial fuel cell electrode reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as figure 2 As shown, an electrode stack using a suspended electrode unit (2) includes: a casing (1), a suspended electrode unit (2), and a unit fixing member (4). shell(1) such as Figure 4 As shown, it includes an outer casing (6), a cell connection part (7) and an electrode stack connection part (9). The outer casing (6) is made of PE material, with a size of 100cm*100cm*100cm, and each side is a hollow cuboid with a height of 5cm. according to Figure 4 Drill holes with an outer diameter of 3cm and a hole spacing of 20cm. The connecting part of the monomer (7) selects nuts, and presses the nuts with a diameter of 3cm, an opposite side of 5cm, and a thickness of 1cm. Image 6 , Figure 7 Align with the hole to secure. The electrode stack connection part (9) adopts a double-layer bottomless hollow cylinder, the outer layer is made of PE material, and the inner layer is made of aluminum alloy material. The electrode stack connection part (9) with an outer d...

Embodiment 2

[0027] Such as image 3 As shown, an electrode stack using a filled electrode monomer (3) includes: a casing (1), a filled electrode monomer (2), and a monomer fixing member (4). The shell (1) is the same as the shell (1) in the first embodiment. according to Figure 9 Make the filled electrode monomer (3), the electrode monomer shell (13) is made of aluminum alloy, the hollow cuboid part in the middle is 90cm long, 5cm wide, and 90cm high, and extends horizontally by 5cm from top to bottom, left and right, and punches holes in the extension with an aperture of 3cm , 25 holes are opened at the front and back, and the hole diameter is 5cm. Pack conductive materials with large specific surface area that can be stacked, such as carbon particles, carbon felt, graphite foam, etc., into the electrode monomer casing (13) as filling materials. Such as Figure 10 , Monomer fixture (4) selects screw for use, external diameter 3cm, pitch 0.2cm, long 5cm. according to image 3 To as...

Embodiment 3

[0029] Applied in AAO process. The AAO process is a combination of traditional activated sludge process, biological nitrification and denitrification process and biological phosphorus removal process. Since the process alternately operates three different environmental conditions of anaerobic, anoxic and aerobic, there will be a variety of facultative anaerobic fermentation bacteria, denitrifying bacteria, aerobic phosphorus-accumulating bacteria, etc. Microorganisms in the environment. Different types of microbial flora coexist in the same sludge system, and there must be competition among bacteria with different sludge ages and carbon sources. Due to the existence of the above contradictions, it is difficult for the system to achieve the optimal growth conditions of the three bacteria with different functions, so the denitrification efficiency of this process is generally not high.

[0030] Applying the invention to the AAO sewage treatment process can strengthen microorga...

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Abstract

The invention discloses a modular microbial fuel cell electrode reactor which is easy to install and expand, convenient for water inlet and efficient in reaction. The electrode reactor is formed by installing single electrode bodies on a shell, and suspension single electrodes and filling type single electrodes can be separately used or can be used in a mixed way according to actual demands. The invention also provides a lead wire capable of connecting a plurality of electrode reactors, so that the plurality of electrode reactors can be used in a combined way in actual application. The electrode reactor can be applied to anodic aluminum oxide (AAO) sewage treatment, and is capable of enhancing denitrification under the condition that an original AAO treatment technology is not influenced and producing electric energy while eliminating pollution.

Description

Technical field: [0001] The invention relates to the fields of new energy and sewage treatment, and specifically designs a microbial fuel cell electrode stack with simple installation, easy expansion, convenient water intake and high reaction efficiency. Background technique: [0002] A microbial fuel cell is a device that uses microorganisms to convert chemical energy in organic matter into electrical energy. The microorganisms attached to the electrode act on the substrate, and the electrons generated are transferred from the anode to the cathode through an external circuit, and finally combine with the electron acceptor. Microbial fuel cells have broad application prospects in the fields of wastewater treatment and new energy development due to their mild reaction conditions, no pollution, and high energy utilization. Assembling a new microbial fuel cell in a small-scale experiment typically folds a carbon fiber felt as the anode support, and uses a small piece of platin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M8/16
CPCY02E60/527H01M4/86H01M8/16Y02E60/50
Inventor 谢倍珍易越刘红
Owner BEIHANG UNIV
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