CN102544562A - Air-permeation cathode double-room microorganism fuel cell - Google Patents
Air-permeation cathode double-room microorganism fuel cell Download PDFInfo
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- CN102544562A CN102544562A CN2012100457145A CN201210045714A CN102544562A CN 102544562 A CN102544562 A CN 102544562A CN 2012100457145 A CN2012100457145 A CN 2012100457145A CN 201210045714 A CN201210045714 A CN 201210045714A CN 102544562 A CN102544562 A CN 102544562A
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Abstract
The invention discloses an air-permeation cathode double-room microorganism fuel cell, comprising an anode room and an air-permeation cathode room. The anode room is used for inoculating active sludge, and the anode room and the air-permeation cathode room are separated by a cation exchange membrane. An anode is arranged in the anode room, and a cathode is fixed in a reactor through an opening baffle to form a cathode room. One surface of the cathode is in contact with a cathode solution, and the other surface of the cathode is directly communicated with air. The anode room is separated from the air to form an anaerobic environment, microorganism is decomposed and metabolized to be organic matters to generate electrons at room temperature, and the electrons move to the air-permeation cathode through an outer circuit and react with oxygen in the air and protons permeated from the anode through a membrane to generate water and also generate electric power. The air-permeation cathode double-room microorganism fuel cell provides enough dissolved oxygen for the cathode so as to avoid mechanical aeration; and the oxygen in the air is taken as an electronic receptor of the microorganism fuel cell, and the electrolyte of the cathode room does not need to be regularly replaced, thus the air-permeation cathode double-room microorganism fuel cell disclosed by the invention is a continuous low-cost microorganism fuel cell.
Description
Technical field
The present invention relates to a kind of air permeation cathodal double-chamber microbiological fuel cell, the air that sees through is that negative electrode provides the electron acceptor of the dissolved oxygen of abundance as microbiological fuel cell, belongs to the green bio energy technology field.
Background technology
(Microbial Fuel Cell MFC) is made up of an anode chamber and a cathode chamber traditional microbiological fuel cell, is separated by through PEM (PEM) between the chamber, the two poles of the earth.Its cardinal principle be with the anode microbe as catalyst anaerobic oxidation carbohydrate (like glucose, sodium acetate etc.), produce electronics, proton and carbon dioxide.Electric transmission arrives negative electrode to anode through the external circuit load, and proton arrives cathode chamber through PEM by the anode chamber, and the cathode chamber electron acceptor is (with O
2Be example) obtain electronics at negative electrode and be reduced, thus form the loop, produce electric current.Microbiological fuel cell is a kind of green novel energy source technology, obtains studying extensively and profoundly in recent years, for solving the energy shortage problem new way is provided.
The reactor of MFC divides from structure can be divided into single chamber MFC and two big types of two chamber MFC substantially, and the design form of negative electrode has determined MFC DESIGN OF REACTOR form; On the other hand, the too high potential loss of negative electrode is the key factor that restriction MFC power density further improves.Air is inexhaustible, and usefulness without cease utilizes airborne oxygen to have very big cost advantage as the cathode electronics acceptor of biological fuel cell.Number of patent application is CN201110214160.2; Denomination of invention is strengthened the nature oxidation effect for the one Chinese patent application of " microbiological fuel cell of a kind of biological-cathode nature oxygenation " through from top to bottom set gradually water distribution zone, catalytic oxidation district and kerve at cathode chamber, but cathode chamber structure relative complex.At present carry out aeration as the form of the microbiological fuel cell conventional machinery aeration of cathode chamber electron acceptor with oxygen; Energy consumption is bigger; Cost is higher, is necessary to provide a kind of and simple in structurely can realizes preferably that again air gets into the microbiological fuel cell of negative electrode naturally.
Summary of the invention
1, technical scheme: the purpose of this invention is to provide a kind of air permeation cathodal double-chamber microbiological fuel cell negative electrode; For negative electrode provides sufficient dissolved oxygen, save negative electrode mechanical aeration commonly used, save power consumption; Reduce running cost, realize the truly MFC of sustainability; This cathode chamber structure has simplicity of design, and is workable, and basis and operating cost such as reduce greatly at advantage.
2, concrete application method: the present invention provides a kind of air permeation cathodal double-chamber microbiological fuel cell; Comprise anode chamber and cathode chamber; Separate by cation-exchange membrane between anode chamber and the cathode chamber; Anode chamber and cathode chamber are provided with baffle plate, sampling filling opening separately, and anode and negative electrode lay respectively at anode chamber and cathode chamber, and are linked to be the closed-loop path through lead and external resistance.In the time of need emptying reactor, can open baffle plate electrode solution is all discharged.
Anode chamber and anode baffle, anode chamber and cathode chamber, cathode chamber and cathode baffle are in twos through bolt and fixed by nut.
Anode baffle is the square poly (methyl methacrylate) plate of the length of side with shirt rim, anode chamber appearance etc., has the screw corresponding with the shirt rim, anode chamber; Cathode baffle be the length of side with cathode chamber shirt rim appearance etc., the centre has the square poly (methyl methacrylate) plate of opening, and has the screw corresponding with the cathode chamber shirt rim.
Anolyte is KH
2PO
46.28g/L, K
2HPO
410.08 g/L, NaHCO
32.0 g/L, NaCl 0.5 g/L, Na
2SO
40.5 g/L, MgSO
4.7H
2O 0.2 g/L, NaAc 0.82 g/L; Catholyte is KH
2PO
46.28g/L, K
2HPO
410.08 g/L, NaHCO
32.0 g/L, NaCl 0.5 g/L, Na
2SO
40.5 g/L, MgSO
4.7H
2O 0.2 g/L.
3, beneficial effect: the present invention adopts and obtains conveniently, and inexhaustible oxygen is as the electron acceptor of microbiological fuel cell, and the air permeation negative electrode has improved the cathode chamber dissolved oxygen concentration, has avoided mechanical aeration commonly used; Practice thrift running cost, realized truly continuable MFC; This cathode construction has simplicity of design, and is workable, and basis and operating cost such as reduce greatly at advantage.
Description of drawings
Fig. 1 is an air permeation cathodal double-chamber microbiological fuel cell sketch map according to the invention.
Indicate among the figure: 1-anode chamber, 2-cathode chamber, 3-cation-exchange membrane, 4-anode, 5-negative electrode, 6-anode baffle, 7-negative electrode open closure, 8-sampling stopple, 9-thief hole, 10-resistance, 11-lead, 12-bolt, 13-nut.
Fig. 2 is air permeation cathodal double-chamber microbiological fuel cell polarization curve according to the invention (A) and power density curve (B) figure.
Embodiment
The invention provides a kind of air permeation cathodal double-chamber microbiological fuel cell, embodiment is explained below in conjunction with accompanying drawing.
Device embodiment: a kind of air permeation cathodal double-chamber microbiological fuel cell of present embodiment comprises anaerobism anode chamber (1) (2) two chambers in oxygen cathode chamber of becoming reconciled; Adopt cation-exchange membrane (3) to separate between anode chamber (1) and the cathode chamber (2); Anode and negative electrode are linked to be the closed-loop path through lead (11) and external resistance (10), and anode chamber (1) is fixed through bolt (12) and nut (13) with negative electrode open closure (7) with cathode chamber (2), cathode chamber (2) with anode baffle (6), anode chamber (1) in twos.Artificial wastewater and activated sludge add the anode chamber from thief hole (9); The stopple (8) of taking a sample beyond the Great Wall behind reinforced the finishing; In airtight anode anaerobic environment; Electrogenesis microbe in the anode chamber is decomposed the oxidation operation in the waste water through metabolism and produces electronics, proton, and electronics is transferred to negative electrode through external circuit, and proton is diffused into negative electrode via cation-exchange membrane; The conductive metal mesh negative electrode (5) that air permeation PTFE and carbon dust are modified gets into cathode chamber, and the oxygen in the cathode chamber combines generation water to reach the process of stablizing electrogenesis with being delivered to the electronics of cathode chamber from anode through lead and seeing through the proton that cation-exchange membrane gets into cathode chamber.
Embodiment: anode comprises the carbon felt in a kind of air permeation cathodal double-chamber microbiological fuel cell of present embodiment, and negative electrode comprises the stainless (steel) wire conductive metal mesh.Negative electrode is that 5.5cm * 5.5cm stainless (steel) wire carries out the antiseepage modification through 10% PTFE and carbon dust by area.Negative electrode stainless (steel) wire and air contact-making surface scribble 10% PTFE, and 350 ℃ of heating were modified in 40 minutes, prevented that cathode chamber electrolyte from oozing out through negative electrode, and stainless (steel) wire and catholyte contact-making surface scribble the mixture of 10% PTFE and carbon dust, and 350 ℃ were heated 40 minutes.Be provided with external resistance in the circuit, output voltage records (5min/ time) in the computer automatically through data acquisition unit (Model 27XX integral series, Keithley Intruments Inc USA).The anode seed sludge is taken from Xiamen collection U.S. sewage treatment plant.
Anolyte is KH
2PO
46.28g/L, K
2HPO
410.08 g/L, NaHCO
32.0 g/L, NaCl 0.5 g/L, Na
2SO
40.5 g/L, MgSO
4.7H
2O 0.2 g/L, NaAc 0.82 g/L, catholyte remove and do not add sodium acetate, the same anolyte of other composition.
Holding anode chamber anaerobic environment; Sufficient and this air permeation cathodal double-chamber microbiological fuel cell is in that to change external resistance when stablize electricity generation ability big or small in matrix; Detecting resistance respectively is the output voltage of 30000 Ω, 10000 Ω, 5100 Ω, 1000 Ω, 510 Ω, 200 Ω, 100 Ω, 51 Ω and 10 Ω; Draw this air permeation cathodal double-chamber microbiological fuel cell polarization curve (Fig. 2 A), be converted into power and draw air permeation cathodal double-chamber microbiological fuel cell power density curve (Fig. 2 B).The open circuit voltage of this air permeation cathodal double-chamber microbiological fuel cell is 375mV, and peak power output is 52mW/m
2Cathode area.According to Ohm's law, battery extrernal resistance when peak power output equals internal resistance, and drawing this internal resistance of fuel cell is 200 Ω.
Claims (4)
1. air permeation cathodal double-chamber microbiological fuel cell; Comprise anode chamber and cathode chamber; Separate by cation-exchange membrane between anode chamber and the cathode chamber; Cathode chamber is provided with air permeation open closure, sample tap, and anode and negative electrode lay respectively at anode chamber and cathode chamber, and is linked to be the closed-loop path through lead and external resistance.
2. a kind of air permeation cathodal double-chamber microbiological fuel cell according to claim 1 is characterized in that anode chamber and anode baffle, anode chamber and cathode chamber, cathode chamber and cathode baffle are in twos through bolt and fixed by nut.
3. a kind of air permeation cathodal double-chamber microbiological fuel cell according to claim 1 is characterized in that when needs empty reactor, can open the anode chamber and the cathode chamber dividing plate electrode solution is all discharged.
4. a kind of air permeation cathodal double-chamber microbiological fuel cell negative electrode according to claim 1 is characterized in that negative electrode is provided with open closure, and negative electrode is contacted with air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100457145A CN102544562A (en) | 2012-02-27 | 2012-02-27 | Air-permeation cathode double-room microorganism fuel cell |
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| CN2012100457145A CN102544562A (en) | 2012-02-27 | 2012-02-27 | Air-permeation cathode double-room microorganism fuel cell |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916211A (en) * | 2012-10-30 | 2013-02-06 | 中国科学院城市环境研究所 | Microbial fuel battery with air-breathable biological cathode |
| CN103351093A (en) * | 2013-07-28 | 2013-10-16 | 桂林理工大学 | Method for excess sludge anerobic fermentation and electricity generation |
| CN104004655A (en) * | 2013-10-09 | 2014-08-27 | 上海交通大学 | Microbial electrochemical system for continuous culture, sampling and real-time detection |
| CN108987778A (en) * | 2018-09-17 | 2018-12-11 | 苏州经贸职业技术学院 | Biological fuel cell reactor |
| CN111180773A (en) * | 2019-12-31 | 2020-05-19 | 福建农林大学 | Double-chamber microbial fuel cell and preparation method thereof |
| CN112162013A (en) * | 2020-09-28 | 2021-01-01 | 福建农林大学 | Microbial fuel cell for monitoring electron transfer between direct inoculation and application method |
| IT202000010324A1 (en) | 2020-05-08 | 2021-11-08 | Samuele Falciani | MICROBIAL FUEL CELL |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483251A (en) * | 2009-02-02 | 2009-07-15 | 汕头大学 | Microbiological fuel cell for wastewater treatment |
| CN101789515A (en) * | 2010-03-17 | 2010-07-28 | 哈尔滨工程大学 | Method for improving electron transfer capacity and output power of microbial fuel cell |
| CN101916873A (en) * | 2010-08-18 | 2010-12-15 | 天津理工大学 | Cylindrical microbiological fuel cell |
-
2012
- 2012-02-27 CN CN2012100457145A patent/CN102544562A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483251A (en) * | 2009-02-02 | 2009-07-15 | 汕头大学 | Microbiological fuel cell for wastewater treatment |
| CN101789515A (en) * | 2010-03-17 | 2010-07-28 | 哈尔滨工程大学 | Method for improving electron transfer capacity and output power of microbial fuel cell |
| CN101916873A (en) * | 2010-08-18 | 2010-12-15 | 天津理工大学 | Cylindrical microbiological fuel cell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916211A (en) * | 2012-10-30 | 2013-02-06 | 中国科学院城市环境研究所 | Microbial fuel battery with air-breathable biological cathode |
| CN103351093A (en) * | 2013-07-28 | 2013-10-16 | 桂林理工大学 | Method for excess sludge anerobic fermentation and electricity generation |
| CN104004655A (en) * | 2013-10-09 | 2014-08-27 | 上海交通大学 | Microbial electrochemical system for continuous culture, sampling and real-time detection |
| CN108987778A (en) * | 2018-09-17 | 2018-12-11 | 苏州经贸职业技术学院 | Biological fuel cell reactor |
| CN111180773A (en) * | 2019-12-31 | 2020-05-19 | 福建农林大学 | Double-chamber microbial fuel cell and preparation method thereof |
| CN111180773B (en) * | 2019-12-31 | 2022-09-27 | 福建农林大学 | Double-chamber microbial fuel cell and preparation method thereof |
| IT202000010324A1 (en) | 2020-05-08 | 2021-11-08 | Samuele Falciani | MICROBIAL FUEL CELL |
| CN112162013A (en) * | 2020-09-28 | 2021-01-01 | 福建农林大学 | Microbial fuel cell for monitoring electron transfer between direct inoculation and application method |
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Application publication date: 20120704 |