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Microbiological fuel cell as well as preparation method and applications thereof

A technology of fuel cells and microorganisms, which is applied in the fields of biochemical fuel cells, battery electrodes, chemical instruments and methods, etc., can solve the problems of low power, cannot achieve the effect of pollutant degradation, and the current density cannot be too low, and achieves good development prospects. Effect

Inactive Publication Date: 2010-02-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The power of current microbial fuel cells is low, and the current density required by the electric Fenton system cannot be too low, otherwise the hydrogen peroxide content produced is too low to achieve the degradation effect on pollutants, so microbial fuel cells and electric Fenton The combination of systems is difficult to have practical effects; in addition, the degradation of organic pollutants in traditional microbial fuel cells generally occurs at the anode, and its power generation performance depends on the difficulty of pollutant degradation and different current levels, so it is not stable enough; moreover, traditional microbial fuel cells The electro-Fenton system needs to use an external power source to degrade organic pollutants, so its use in remote areas will be limited

Method used

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  • Microbiological fuel cell as well as preparation method and applications thereof
  • Microbiological fuel cell as well as preparation method and applications thereof
  • Microbiological fuel cell as well as preparation method and applications thereof

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Experimental program
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Effect test

Embodiment 1

[0037] The preparation steps of microbial fuel cell anode are:

[0038] Use a measuring cylinder to measure 20mmol / L AQDS 25mL into a glass bottle, then add ultrapure H 2 O 74mL, open the nitrogen bottle and pass N into the above solution 2 , while keeping N 2 Add 1mL, 0.1mol / L PPy solution under the condition of circulation, pass N 2 After 30 minutes, the electrochemical workstation was turned on, and the three-electrode system was used for electrodeposition. The method was selected as chronoamperometry, and the scanning voltage was 0.8V. During the operation of electrodeposition, N 2 Do not pass into the mixed solution, just pass to the top of the solution, keep the top as N 2 To prevent the air flow from affecting the effect of electrodeposition, follow the above steps to electrodeposit until the charge is 1 coulomb and then end the electrodeposition process.

[0039] The anode prepared by the above method and the blank carbon felt as the cathode constitute a dual-chamb...

Embodiment 2

[0041] Such as Figure 6 As shown in the working principle diagram of the microbial fuel cell of the present invention, the anode of the microbial fuel cell of the present invention is a carbon felt with polypyrrole and anthraquinone-2,6-sodium disulfonate electrodeposited on the surface; the negative electrode is mainly composed of carbon nano tube, polytetrafluoroethylene and gamma-basic iron oxide.

[0042] The preparation of microbial fuel cell of the present invention comprises the following steps:

[0043] (1) Preparation method of anode

[0044] Use a measuring cylinder to measure 20mmol / L AQDS 25mL into a glass bottle, then add ultrapure H 2 O 74mL, open the nitrogen bottle and pass N into the above mixture 2 , while keeping N 2 Add 0.1mol / L, 1mL of PPy under normal circulation, pass N 2 After 30 minutes, the electrochemical workstation was turned on, and the three-electrode system was used for electrodeposition. The method was selected as chronoamperometry, and t...

Embodiment 3

[0049] The preparation of microbial fuel cell of the present invention comprises the following steps:

[0050] (1) Preparation method of anode

[0051] Use a measuring cylinder to measure 20mmol / L AQDS 25mL into a glass bottle, then add ultrapure H 2 O 74mL, open the nitrogen bottle and pass N into the above mixture 2 , while keeping N 2 Add 0.1mol / L, 1mL of PPy under the condition of circulation, pass N 2 After 30 minutes, the electrochemical workstation was turned on, and the three-electrode system was used for electrodeposition. The method was selected as chronoamperometry, and the scanning voltage was 0.8V. During the operation of electrodeposition, N 2 Do not pass into the mixed solution, just pass to the top of the solution, keep the top as N 2 To prevent the air flow from affecting the effect of electrodeposition, follow the above steps to electrodeposit until the charge is 1 coulomb and then end the electrodeposition process.

[0052] (2) How to make the cathode ...

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Abstract

The invention relates to the field of microbiological fuel cells, in particular to a microbiological fuel cell as well as a preparation method and applications thereof. The anode is carbon felt, the surface of which is deposited with polypyrrole and anthraquinone-2,6-sodium disulfonate; and the cathode mainly comprises carbon nano tubes, polyfluortetraethylene and gamma-iron oxide basic. The invention combines the advantages of microbiological fuel cells and electro-Fenton, and utilizes electric energy produced under the action of microorganisms on organic substrates in the anolyte as the energy of the electro-Fenton reaction to further oxidize and degrade contaminants in water bodies. The method is environmental-friendly and has the effects of production capacity and water treatment so that a new method for degrading organic contaminants with microbiological fuel cells is provided.

Description

technical field [0001] The invention relates to the field of microbial fuel cells, in particular to a microbial fuel cell and its preparation method and application. Background technique [0002] A microbial fuel cell is a device that uses bacteria as a catalyst to oxidize organic or inorganic substances while generating electric current. The electric energy generated by the interaction between the bacteria and the substrate is transferred to the anode (negative terminal) and then passes through the external circuit, through the conductive material with resistance or to drive the load to work, and finally the current flows to the cathode (positive terminal). By convention, a positively charged current flows from the positive pole to the negative pole, in the opposite direction to the flow of electrons. Such a device must enable continuous or intermittent replenishment of the oxidized substrate at the anode, otherwise the cell can only function as a biological cell. Methods...

Claims

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Application Information

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IPC IPC(8): H01M8/16H01M4/96H01M4/86H01M4/88C02F1/461
CPCY02E60/527Y02E60/50Y02P70/50
Inventor 冯春华万群义樊栓狮郎雪梅
Owner SOUTH CHINA UNIV OF TECH
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