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a fuel cell

A fuel cell and microbial fuel technology, applied in the field of microorganisms, achieves the effects of complete oxidation of organic matter, high COD removal rate, and improved power generation efficiency

Inactive Publication Date: 2015-09-02
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many microorganisms producing electricity have been found, such as Shewanella, Geobacter, Klebsiella, etc., these bacteria can only produce electricity under neutral conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A new type of fuel cell, including cathode (20cm×20cm graphite), catholyte, anode (20cm×20cm graphite), anolyte, microbial fuel, cation exchange membrane, copper wire and resistance (1000 ohm), the cathode is connected through the wire , The anode and the resistor are connected in series to form a loop; the anolyte is: NH 4 Cl 1.3%, NaHCO 3 0.3%, KH 2 PO 4 0.2%, glucose 2%, the rest is water (weight fraction); the anolyte is fed with high-purity nitrogen to ensure that it is in an anaerobic state. The catholyte is: potassium ferricyanide solution (weight fraction) with a concentration of 8%;

[0037] The above-mentioned microbial fuel is prepared from the following raw material bacteria in the following weight percentages: Rhodopseudomonas palustris 25%, Pseudomonas aeruginosa 20%, Geobacter sulphur-reduced 20%, Bacillus licheniformis 15%, Bacillus cereus 15%, Sulfur propionate 5%. The microbial fuel is a mixed bacterial solution, and the inoculum is 5% of the anolyte. ...

Embodiment 2

[0039] The anolyte is industrial wastewater from a fertilizer plant in Linshu, and the rest is the same as above. The composition changes of anolyte and anolyte after 36 hours of power generation are shown in Table 1:

[0040] Table 1

[0041] Anolyte before power generation (mg / L) Anolyte after 36 hours (mg / L) Removal rate COD365442188.5％ Ammonia7657690.2％ Volatile phenols 3572991.9％

[0042] At the same time, the voltage across the detection resistor is 782mv; it can be seen that the microbial fuel of the present invention not only has good power generation performance, but also can treat high-concentration polluted wastewater, and can also be used as an effective sewage treatment agent.

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PUM

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Abstract

The invention discloses a novel fuel cell. The novel fuel cell comprises a cathode, catholyte, an anode, anolyte, microbial fuel, a cation exchange membrane, a wire and a resistor, wherein the cathode, the anode and the resistor are connected in series by wires to form a loop. The invention also discloses microbial fuel. The novel fuel cell disclosed by the invention has the advantages that the structure is simple, abundant maintenance is not needed, and the cost for building and operation is low; and the two purposes of removing pollution and generating electric energy can be simultaneously achieved.

Description

Technical field [0001] The invention belongs to the technical field of microorganisms, and specifically relates to a fuel cell that utilizes the production capacity of microorganisms. Background technique [0002] Microbial Fuel Cell (MFC) is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy. Its basic working principle is: in the anaerobic environment of the anode chamber, the organic matter is decomposed under the action of microorganisms and releases electrons and protons. The electrons rely on a suitable electron transfer mediator to effectively transfer between the biological components and the anode, and pass through the outside. The circuit is transferred to the cathode to form an electric current, and the protons are transferred to the cathode through the proton exchange membrane. The oxidant (usually oxygen) gets electrons at the cathode to be reduced and combined with protons into water. [0003] Compared with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16H01M4/90C02F3/34
CPCY02E60/527Y02E60/50
Inventor 梁茂杰刘松魏若琳李彪何健刘庆义常俊军
Owner STATE GRID CORP OF CHINA
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