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Self-medium coupled microbe fuel battery for single room micro filtering

A technology of fuel cells and microfiltration membranes, applied in the direction of biochemical fuel cells, etc., can solve problems such as theoretical and technical difficulties that have not been well resolved, increase COD, bacteria difficulties, etc., and achieve high sewage COD removal rate and power generation. Low net energy loss, space-saving effect

Inactive Publication Date: 2008-08-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to enrich bacteria with the ability to secrete electron mediators at present, requiring specific methods and a long cycle, and electron mediators are oxygen-consuming substances, which will increase the COD in the effluent
[0006] In summary, although the existing MFC technology has made major breakthroughs in configuration, materials and electrogenic bacteria, there are many theoretical and technical difficulties that have not been well resolved.

Method used

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  • Self-medium coupled microbe fuel battery for single room micro filtering
  • Self-medium coupled microbe fuel battery for single room micro filtering
  • Self-medium coupled microbe fuel battery for single room micro filtering

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Embodiment 1

[0049] When anaerobic sludge is inoculated, glucose is used as the fuel substrate, and a 500-ohm external resistance is connected to operate the invention, a complete operation cycle only takes 3 days. Since the start, there will be a higher than The current generation of 40 times the background value can repeatedly generate a stable current of about 1.2mA from the third cycle, which lasts for more than three days, and the recovery time between cycles is short, which can quickly charge and discharge. At the same time, the COD removal rate is as high as 90%. All the above are the results obtained without any performance optimization in the present invention, and there is still a lot of room for performance improvement.

Embodiment 2

[0051] Inoculate with anaerobic sludge, externally connect 500 ohm resistance, by comparatively researching the MFC operation results after no membrane, proton exchange membrane, ultrafiltration membrane and the microporous membrane of the present invention and cathode are integrated, it is shown that the present invention can The maximum voltage of 0.59v is obtained in three cycles, which is much higher than 0.45v of proton exchange membrane and 0.18v of ultrafiltration membrane, and even higher than 0.57v of membraneless cathode. The COD removal rate is also as high as 90%.

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Abstract

The present invention discloses a single-chamber microfiltration membrane self-mediator coupling type microbial fuel cell, comprises a single-chamber type cell body, an anode plate, a cathode plate and a top cover, wherein, the single-chamber type cell body is in a square cavity structure; the cathode plate consists of a micropore filter layer, a catalyst layer, a carbon paper base layer and a waterproof layer which are connected in order; the micropore filter layer is a hydrophilic microfiltration membrane with micropores; the catalyst layer is the mixture of platinum catalyst and carbon powder, which covers one side of the carbon paper base layer in contact with solution inside the cell body; the other side of the carbon paper base layer in contact with air is plastered with 2-3 polyfluortetraethylene thin coatings so as to form the waterproof layer. The device of the present invention can have a plurality of anode plates placed inside and flexibly adjust the relative distance between the anode plates and an anode. In the whole operation process, the system does not need to keep strict anaerobic environment. The cell is simple in structure, cheap in material, flexible to operate, fast to charge / discharge, stable in performance and capable of constantly and efficiently purifying sewage and producing electric energy which can be directly utilized.

Description

technical field [0001] The present invention relates to a fuel cell, in particular to a single-chamber microfiltration membrane self-mediated body coupled microbial fuel cell that is inexpensive, simple in configuration, easy to operate, and capable of efficiently treating organic sewage while obtaining direct electric energy. The microbial fuel cell is also A sewage treatment device. Background technique [0002] The microbial fuel cell technology that has emerged in recent years can obtain additional electrical energy output while treating sewage. It is a new sewage treatment process in addition to the traditional activated sludge process and anaerobic digestion process. The microbial fuel cell (MFC) used in early research is a double-chamber type. The cathode and anode electrodes are located in the cathode compartment and the anode compartment, respectively, and the proton exchange membrane is located in the middle. When applied to actual wastewater treatment, the bigges...

Claims

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Application Information

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IPC IPC(8): H01M8/16
CPCY02E60/527Y02E60/50
Inventor 胡勇有孙键
Owner SOUTH CHINA UNIV OF TECH
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