CN105680080A - Microbial fuel cell system capable of improving efficiency by solar energy and construction method for microbial fuel cell system - Google Patents

Microbial fuel cell system capable of improving efficiency by solar energy and construction method for microbial fuel cell system Download PDF

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CN105680080A
CN105680080A CN201610176775.3A CN201610176775A CN105680080A CN 105680080 A CN105680080 A CN 105680080A CN 201610176775 A CN201610176775 A CN 201610176775A CN 105680080 A CN105680080 A CN 105680080A
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fuel cell
anode
solar cell
microbiological fuel
cell system
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陈伟华
陈钊
丁竑瑞
李艳
鲁安怀
胡晓东
沈波
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Peking University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Fuel Cell (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a microbial fuel cell system capable of improving efficiency by solar energy and a construction method for the microbial fuel cell system. According to the microbial fuel cell system, p-n junction semiconductor solar cells are connected in series outside a positive electrode chamber and a negative electrode chamber; the microbial fuel cell system with a synergistic effect of a solar cell and a microbial fuel cell is configured; the solar cell and the microbial fuel cell are subjected to the synergistic effect to greatly increase the electricity generation amount of the microbial fuel cell; due to the introduction of the solar cell photocatalysis, the electron-accepting capability of the negative electrode of the ''solar cell-microbial fuel cell'' system is improved, and meanwhile, the electron-supplying capability of the positive electrode is also developed to the maximum; due to the solar cell, the improvement of the efficiency of the novel microbial fuel cell system is facilitated, and the synergistic effect of the solar cell and the microbial fuel cell is realized; the microbial fuel cell system is simple in structure; the microbial fuel cell and the solar cell photocatalysis technology are adopted, so that complementary advantages and functional inter-coordination are realized; and in addition, the dual effects of sewage disposal and power generation can be realized jointly.

Description

Solar energy is utilized to carry high efficiency microbiological fuel cell system and building method thereof
Technical field
The present invention relates to field of biological energy source, be specifically related to one and utilize solar energy to carry high efficiency microbiological fuel cell system and building method thereof.
Background technology
Global energy and environmental problem are increasingly serious, development of new clean energy resource and utilize regenerative resource to become global common recognition. 1911, Britain's botanist's Pottery yeast and escherichia coli were tested, and announced to utilize microorganism can produce electric current, and biological fuel cell research thus starts. Microbiological fuel cell (MicrobialFuelCell is called for short MFC) is the device utilizing microorganism that the chemical energy of the organic substance in waste water is directly changed into electric energy. Chemical energy in waste water can be converted into electric energy by MFC, can purify waste water while obtaining electric energy. A kind of modular design of microbiological fuel cell is to adopt double-chamber structure, hold the anode chamber of microorganism by PEM and cathode chamber isolation, the organic electronics produced in anode chamber is by anaerobe degradation process is transferred to cathode chamber by anode through external circuit, simultaneously, proton is also entered cathode chamber by anode chamber by PEM, thus constituting current loop, and reclaim by external circuit connection electrical equipment or utilize electric energy, oxygen molecule, proton and electronics are at cathode chamber internalization symphysis Cheng Shui. Microorganism catalysis is transmitted to negative electrode from anode generation electronics by external circuit and is reacted, and produces electric current in loop, and this just constitutes microbiological fuel cell. Typical MFC not only constructs complexity, and cost is higher with internal resistance, but also needs to consume many external impetus, limits its electric energy output efficiency and popularization and application.
The development of microbiological fuel cell still restricts in its relatively low electricity generation performance at present, and except relatively costly, topmost reason is that output power density is also relatively low, and open-circuit voltage is typically in about 300mV～400mV. Determine that the factor of microbiological fuel cell output power density mainly has the following aspects: transfer rate from microorganism to anode of the degradation rate of substrate, electronics, the internal resistance of cell, proton are arrived the speed of the reduction reaction of the transfer rate of negative electrode, the supply of oxidant and negative electrode, the catalytic action etc. of cathode material by microorganism.
Summary of the invention
In order to overcome above problems of the prior art, the present invention proposes one and utilizes solar energy to carry high efficiency microbiological fuel cell system and building method thereof, p-n junctions in series semiconductor solar cell between the negative electrode and anode of microbiological fuel cell, constitute " solaode-microbiological fuel cell " system, novel microbiological fuel cell system gives full play to the synergism of solaode and microbiological fuel cell, improves microbiological fuel cell sewage disposal and electricity generation performance.
It is an object of the present invention to propose one utilizes solar energy to put forward high efficiency microbiological fuel cell system.
The present invention utilizes solar energy to put forward high efficiency microbiological fuel cell system to include: microorganism, anode chamber, cathode chamber, cation exchange membrane, anode, negative electrode, load and p-n junction semiconductor solar cell; Wherein, separated by cation exchange membrane between anode chamber and cathode chamber, place energy degradation of contaminant the microorganism of energy electrogenesis in the anode compartment, anode chamber and cathode chamber all place electrolyte solution, anode and negative electrode are individually positioned in anode chamber and cathode chamber, series load between anode and negative electrode outside anode chamber and cathode chamber, constitutes microbiological fuel cell; Outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell, the positive pole of p-n junction semiconductor solar cell is connected with anode, and the negative pole of p-n junction semiconductor solar cell is connected with negative electrode, constitutes microbiological fuel cell system; When solar irradiation, the collaborative microbiological fuel cell of p-n junction semiconductor solar cell drives microbiological fuel cell system to operate jointly, increases the electric current in loop, and improves sewage disposal performance.
The present invention outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell, construct a solaode and the synergistic microbiological fuel cell system of microbiological fuel cell; In anode chamber, microbiological oxidation initiating electron donor obtains energy, produces electronics simultaneously, and electronics is delivered to anode through microorganism, then through being transferred to external circuit by anode and arriving the positive pole of p-n junction semiconductor solar cell; When solar irradiation, solaode produces photo-generate electron-hole pair, under the pulling of the built in field of p-n junction quasiconductor, light induced electron moves to the negative pole of solaode, and is moved to the electrolyte solution of cathode chamber by wire, with electron acceptor generation electrochemical reaction, and photohole moves to solaode positive pole, the electronics compound next with anode, thus driving microbiological fuel cell further, increase the electric current in loop, improve the Organic substance in microbial degradation sewage simultaneously; The microbiological fuel cell system of the present invention gives full play to the synergism of solaode and microbiological fuel cell, improves microbiological fuel cell delivery efficiency, improves microbiological fuel cell electrogenesis and sewage disposal performance. P-n junction semiconductor solar cell adopts the one in silica-based solar cell, compound solar cell and organic semiconductor solaode.
Further, if the p-n junction semiconductor solar cell that between the negative electrode of microbiological fuel cell and anode, Series power is bigger, need to outside anode chamber and cathode chamber simultaneously series limiting resistor, regulating loop electric current. The condition of choosing of solaode and current-limiting resistance is, one loop of p-n junction semiconductor solar cell and current-limiting resistance composition, the short circuit current in this loop is less than 10 times of microbiological fuel cell short circuit current, and at this moment this microbiological fuel cell system can run well.
A kind of building method utilizing solar energy to put forward high efficiency microbiological fuel cell system of offer is provided.
The solar energy that utilizes of the present invention carries the building method of high efficiency microbiological fuel cell system, comprises the following steps:
1) cultivating can degradation of contaminant can the microorganism of electrogenesis;
2) microorganism of cultured energy degradation of contaminant energy electrogenesis is placed in the anode compartment, anode chamber and cathode chamber all place electrolyte solution, separated by cation exchange membrane between anode chamber and cathode chamber, anode chamber and cathode chamber place anode and negative electrode respectively;
3) outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell, the positive pole of p-n junction semiconductor solar cell is connected with anode, the negative pole of p-n junction semiconductor solar cell is connected with negative electrode, constructs the microbiological fuel cell system of the collaborative microbiological fuel cell of a solaode; In anode chamber, microbiological oxidation initiating electron donor obtains energy, produces electronics simultaneously, and electronics is delivered to anode through microorganism, then through being transferred to external circuit by anode and arriving the positive pole of p-n junction semiconductor solar cell; When solar irradiation, solaode produces photo-generate electron-hole pair, under the pulling of the built in field of p-n junction quasiconductor, light induced electron moves to the negative pole of solaode, and moved to the electrolyte solution of cathode chamber by wire, with electron acceptor generation electrochemical reaction, and photohole moves to solaode positive pole, the electronics compound next with anode, the collaborative microbiological fuel cell of semiconductor solar cell drives microbiological fuel cell system to operate jointly, increase the electric current in loop, improve contaminant degradation efficiency simultaneously;
4) series load realizes electric energy output in circuit.
Wherein, in step 3) in, p-n junction semiconductor solar cell adopts the one in silica-based solar cell, compound solar cell and organic semiconductor solaode.
Further, in step 3) in, if the p-n junction semiconductor solar cell that between the negative electrode of microbiological fuel cell and anode, Series power is bigger, need to outside anode chamber and cathode chamber simultaneously series limiting resistor, regulating loop electric current. The condition of choosing of solaode and current-limiting resistance is, one loop of p-n junction semiconductor solar cell and current-limiting resistance composition, the short circuit current in this loop is less than 10 times of microbiological fuel cell short circuit current, and at this moment this microbiological fuel cell system can run well.
Advantages of the present invention:
(1) electrogenesis amount is increased: this device combines solaode and microbiological fuel cell technology, and the two there occurs cooperative effect, considerably increases the electrogenesis amount of microbiological fuel cell;
(2) simple in construction: p-n junction semiconductor solar cell is simply connected in series between the negative electrode of microbiological fuel cell and anode by assembly of the invention;
(3) make use of solar energy and the microorganism can two kinds of clean energy resourcies: the while of organic in microbial degradation sewage and produce electronics or hole, p-n junction semiconductor solar cell also produces electronics and hole under light illumination, and the two is collaborative in circuit; The introducing of solaode photocatalysis improves the electronic capability that accepts of " solaode-microbiological fuel cell " system negative electrode, and makes anode provide the ability of electronics to be played to greatest extent; Solaode has promoted the raising of novel microbial fuel cell system efficiency, it is achieved that with the synergism of microbiological fuel cell.
Microbiological fuel cell and solaode photocatalysis technology in the present invention are capable of having complementary advantages, and function is mutually coordinated, jointly completes the double effects of sewage disposal and generating.
Accompanying drawing explanation
The solar energy that utilizes that Fig. 1 is the present invention carries the schematic diagram of high efficiency microbiological fuel cell system;
The solar energy that utilizes that Fig. 2 is the present invention carries polarization curve (I-U) and output power density curve (I-P) figure of high efficiency microbiological fuel cell system;
The solar energy that utilizes that Fig. 3 is the present invention carries the polarization curve comparison diagram of high efficiency microbiological fuel cell system and existing microbiological fuel cell;
The solar energy that utilizes that Fig. 4 is the present invention carries the load delivery efficiency comparison diagram of high efficiency microbiological fuel cell system and existing microbiological fuel cell.
Detailed description of the invention
Below in conjunction with accompanying drawing, by specific embodiment, the present invention is expanded on further.
As it is shown in figure 1, the present embodiment utilize solar energy to put forward high efficiency microbiological fuel cell system to include: microorganism 1, anode chamber 2, cathode chamber 3, cation exchange membrane 4, anode 5, negative electrode 6, load 7, p-n junction semiconductor solar cell 8 and current-limiting resistance 9; Wherein, separated by cation exchange membrane 4 between anode chamber 2 and cathode chamber 3, anode chamber and cathode chamber place microorganism and the electrolyte solution of energy degradation of contaminant energy electrogenesis, anode 5 and negative electrode 6 are individually positioned in anode chamber 2 and cathode chamber 3, series load 7 between anode 5 and the negative electrode 6 outside anode chamber 2 and cathode chamber 3; Outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell 8; The positive pole of p-n junction semiconductor solar cell is connected with anode, and the negative pole of p-n junction semiconductor solar cell is connected with negative electrode; Outside anode chamber and cathode chamber, series limiting resistor 9.
The solar energy that utilizes of the present embodiment carries the building method of high efficiency microbiological fuel cell system, comprises the following steps:
1) microorganism is provided by anaerobic activated sludge, medium component is: 0.1g/LKCl, 0.5g/LNH4Cl, 0.1g/LMgCl2,0.1g/LCaCl2,0.3g/LKH2PO4,2.5g/LNaHCO3,1.64g/LCH3COONa, and the yeast powder of 1g/L, anode original ph is 7.3 (± 0.2); Culture medium sterile nitrogen ventilation 0.5h removes dissolved oxygen, seals to keep anaerobic state.
2) on traditional dual chamber MFC system basis, external one piece of silicon solar cell of connecting, the i.e. novel MFC system of the collaborative MFC of one silicon solar cell of structure, as shown in Figure 1; In the present embodiment, device is made up of double-chamber microbiological electrochemical appliance, and device is made up of anode chamber and the cathode chamber of volume equalization 500mL, and centre separates with the cation exchange membrane CEM of 6cm × 10cm; Negative electrode and anode are the coarse graphite electrode of 0.5cm × 5cm × 7cm (thickness × width × length); Electrode soaks 1h respectively in 1mol/LHCl and 1mol/LNaOH solution before using, be stored in deionized water stand-by after cleaning; Graphite electrode use copper conductor (diameter 0.2 millimeter is wound around 20 circles) is drawn, and with a kind of non-conductive epoxy sealing to avoid corrosion around boring, two electrode spacings are about 12cm; In the present embodiment, solaode adopts tradition p-n junction silicon solar cell, and light source uses air-cooled Xe lamp simulating sun radiant, and the distance between silicon solar cell and light source is 100cm, and on silicon solar cell, irradiation intensity is 79mW/cm2, illuminating area 4mm × 4mm.
3) anaerobic activated sludge (picking up from sewage treatment plant of Beijing Gaobeidian City) of 10% (volume ratio) of inoculation on the anode of anode chamber, cathode chamber is using 1mol/LKCl solution as electrolyte solution, pass into air with trachea at cathode chamber, to ensure the O in MFC cathode chamber KCl electrolyte solution simultaneously2Content so that the reduction reaction of negative electrode can be properly functioning;All experiments all carry out under room temperature (25 ± 1 DEG C).
4) cathode chamber and anode chamber place a saturated calomel electrode (SCE respectively, standard electrode EMF 0.242V) as reference electrode, respectively at " negative electrode-----reference electrode " " anode-----reference electrode " and external load on plus voltage collector; Microbiological fuel cell is a kind of novel energy, and peak power output is in mW/m2 magnitude, and solaode is then the ripe efficient energy, and peak power output can reach kw/m2; In microbiological fuel cell, owing to being affected by microorganism and bath composition, under the effect of microorganism, there is theoretic ultimate value in electric current. Therefore when increasing the solaode of series connection, owing in intense light irradiation situation, the internal resistance of solaode is only small, output, voltage, electric current are far above microbiological fuel cell system, the voltage that produces, electric current will exceed well over microorganism and move the load capacity of carrier, so cause that microorganism loses activity can not normal operation again. When external solaode power is higher, the electrode potential of anode can significantly be affected, Institute of Micro-biology anode chamber cannot provide loop enough electronics, anode will become the limiting factor of whole device. It is thus desirable to make solaode mate with microbiological fuel cell by loading current-limiting resistance, block illuminating area or reducing the ways such as intensity of illumination. It is found through experiments, under light conditions, assuming that one loop of the solaode chosen and current-limiting resistance composition, when less than about 10 times that the short circuit current in this loop is microbiological fuel cell short circuit current, this novel microbial fuel cell system can run well. In the present embodiment, in order to ensure the continuity of experiment, the current-limiting resistance of 1000 Ω that connect on silicon solar cell.
When illumination silicon solar cell, change the resistance value of load on external loop, loop each point electromotive force in record different loads situation, form polarization curve (I-U) and output power density curve (I-P) figure, I=Uload/Rload, P=(Uload* I)/V, wherein, I is loop current, and P is MFC system output power density, UloadFor the voltage of load, RloadFor the resistance sizes of load, V is cathode chamber electrolyte volume. The I-U (loop current-load voltage) of the present embodiment, I-P (loop current-output power density) is as in figure 2 it is shown, when load resistance is identical with system internal resistance, load resistance has maximum output.
In the present embodiment, due to the current-limiting resistance of 1000 Ω that connected, illumination silicon solar cell novel MFC system internal resistance (1280 Ω) is slightly larger than common MFC system internal resistance (251 Ω). Owing to illumination silicon solar cell MFC internal resistance includes current-limiting resistance 1000 Ω, therefore, under illumination condition, introducing of solaode does not bring bigger extra internal resistance to MFC system, as shown in Figure 3.
Fig. 4 shows silicon solar cell and MFC synergism system output power density (275mW/m3) apparently higher than the output power density (140mW/m of common MFC system3), loop current brings up to 0.72mA from the 0.61mA of common MFC system, and loop current size is directly proportional to anode and cathode reaction rate, so using the novel microbial fuel cell system degradation of contaminant of present invention design, degradation rate also will be greatly improved. It was found that common MFC declines rapidly after reaching peak power output point, it was shown that microorganism cannot normally provide more electronics. When the response of external solaode is too big, finally significantly having influence on the electrode potential of anode, now show the electronics that anode cannot provide loop enough, anode will become the limiting factor of whole device. If solaode response is excessive, MFC loses the effect of electrochemical reaction, now it is similar to a common electrolytic cell device, also because so judging that the introducing of solaode is not only the superposition of the simple energy content of battery, the more important thing is that photocatalysis introduces makes the anode potentiality of system obtain maximum performance, improves delivery efficiency.
Therefore under the effect of solaode, what the MFC system of the present invention improved negative electrode accepts electronic capability, has played anode to greatest extent and provides the ability of electronics. Owing in the present invention, MFC system employs current-limiting resistance, so the output of load reaches maximum in the situation that output electric current is relatively small. Preferably suitable solaode and microbiological fuel cell collaboration system, can reach under more High Output Current density, and the more purpose of high-output power utilizes the degradation rate of MFC system degradation of contaminant also will be greatly improved simultaneously.
Solaode has promoted the raising of novel microbial fuel cell system efficiency, it is achieved that with the synergism of microbiological fuel cell. Novel microbiological fuel cell system make use of solar energy and microorganism two kinds of clean energy resourcies of energy, has higher delivery efficiency relative to common MFC system, thus has important research and development and practical value.
It is finally noted that, the purpose publicizing and implementing example is in that help is further appreciated by the present invention, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, and various substitutions and modifications are all possible. Therefore, the present invention should not be limited to embodiment disclosure of that, and the scope that the scope of protection of present invention defines with claims is as the criterion.

Claims (8)

1. one kind utilizes solar energy to put forward high efficiency microbiological fuel cell system, it is characterized in that, described microbiological fuel cell system includes: microorganism, anode chamber, cathode chamber, cation exchange membrane, anode, negative electrode, load and p-n junction semiconductor solar cell; Wherein, separated by cation exchange membrane between anode chamber and cathode chamber, place energy degradation of contaminant the microorganism of energy electrogenesis in the anode compartment, anode chamber and cathode chamber all place electrolyte solution, described anode and negative electrode are individually positioned in anode chamber and cathode chamber, series load between anode and negative electrode outside anode chamber and cathode chamber, constitutes microbiological fuel cell; Outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell, the positive pole of described p-n junction semiconductor solar cell is connected with anode, and the negative pole of described p-n junction semiconductor solar cell is connected with negative electrode, constitutes microbiological fuel cell system; When solar irradiation, the collaborative microbiological fuel cell of described p-n junction semiconductor solar cell drives microbiological fuel cell system to operate jointly, increases the electric current in loop, and improves sewage disposal performance.
2. microbiological fuel cell system as claimed in claim 1, it is characterised in that further, at the outer series limiting resistor in anode chamber and cathode chamber, regulating loop electric current.
3. microbiological fuel cell system as claimed in claim 1, it is characterised in that described p-n junction semiconductor solar cell adopts the one in silica-based solar cell, compound solar cell and organic semiconductor solaode.
4. microbiological fuel cell system as claimed in claim 1, it is characterised in that one loop of described p-n junction semiconductor solar cell and current-limiting resistance composition, the short circuit current in this loop is less than 10 times of microbiological fuel cell short circuit current.
5. one kind utilizes the building method that solar energy puies forward high efficiency microbiological fuel cell system, it is characterised in that described building method comprises the following steps:
1) cultivating can degradation of contaminant can the microorganism of electrogenesis;
2) microorganism of cultured energy degradation of contaminant energy electrogenesis is placed in the anode compartment, anode chamber and cathode chamber all place electrolyte solution, separated by cation exchange membrane between anode chamber and cathode chamber, anode chamber and cathode chamber place anode and negative electrode respectively;
3) outside anode chamber and cathode chamber, p-n junctions in series semiconductor solar cell, the positive pole of p-n junction semiconductor solar cell is connected with anode, the negative pole of p-n junction semiconductor solar cell is connected with negative electrode, constructs the microbiological fuel cell system of the collaborative microbiological fuel cell of a solaode; In anode chamber, microbiological oxidation initiating electron donor obtains energy, produces electronics simultaneously, and electronics is delivered to anode through microorganism, then through being transferred to external circuit by anode and arriving the positive pole of p-n junction semiconductor solar cell; When solar irradiation, solaode produces photo-generate electron-hole pair, under the pulling of the built in field of p-n junction quasiconductor, light induced electron moves to the negative pole of solaode, and moved to the electrolyte solution of cathode chamber by wire, with electron acceptor generation electrochemical reaction, and photohole moves to solaode positive pole, the electronics compound next with anode, the collaborative microbiological fuel cell of semiconductor solar cell drives microbiological fuel cell system to operate jointly, increase the electric current in loop, improve contaminant degradation efficiency simultaneously;
4) series load realizes electric energy output in circuit.
6. building method as claimed in claim 5, it is characterised in that in step 3) in, p-n junction semiconductor solar cell adopts the one in silica-based solar cell, compound solar cell and organic semiconductor solaode.
7. building method as claimed in claim 5, it is characterized in that, in step 3) in, if the p-n junction semiconductor solar cell that between the negative electrode of microbiological fuel cell and anode, Series power is big, need to outside anode chamber and cathode chamber simultaneously series limiting resistor, regulating loop electric current.
8. building method as claimed in claim 7, it is characterized in that, the condition of choosing of solaode and current-limiting resistance is, one loop of p-n junction semiconductor solar cell and current-limiting resistance composition, the short circuit current in this loop is less than 10 times of microbiological fuel cell short circuit current.
CN201610176775.3A 2016-03-25 2016-03-25 Microbial fuel cell system capable of improving efficiency by solar energy and construction method for microbial fuel cell system Pending CN105680080A (en)

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CN106153700A (en) * 2015-03-23 2016-11-23 中国海洋大学 A kind of organic pollutant degradation in-situ monitoring submarine sedimentary strata biological fuel cell sensing system
CN106207200A (en) * 2016-08-19 2016-12-07 北京大学 The nitride microorganism fuel cell cathode of a kind of hetero-epitaxy and battery and method
CN109052668A (en) * 2018-09-18 2018-12-21 广东工业大学 A kind of the cultivation biogas slurry treatment device and biogas slurry treatment method of solar energy electric field collaboration phycomycete metabolism
CN110451631A (en) * 2019-07-31 2019-11-15 安徽环境科技集团股份有限公司 A kind of method of enhanced biological electrochemical in-situ pollution waters restoration

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CN101299463A (en) * 2008-06-06 2008-11-05 北京大学 Light fuel cell
CN204834757U (en) * 2015-07-30 2015-12-02 上海光语生物科技有限公司 Adopt photobioreactor's fuel cell power supply system

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106153700A (en) * 2015-03-23 2016-11-23 中国海洋大学 A kind of organic pollutant degradation in-situ monitoring submarine sedimentary strata biological fuel cell sensing system
CN106153700B (en) * 2015-03-23 2020-05-05 中国海洋大学 Seabed sediment layer biofuel cell sensor system for in-situ monitoring of organic pollutant degradation
CN106207200A (en) * 2016-08-19 2016-12-07 北京大学 The nitride microorganism fuel cell cathode of a kind of hetero-epitaxy and battery and method
CN109052668A (en) * 2018-09-18 2018-12-21 广东工业大学 A kind of the cultivation biogas slurry treatment device and biogas slurry treatment method of solar energy electric field collaboration phycomycete metabolism
CN110451631A (en) * 2019-07-31 2019-11-15 安徽环境科技集团股份有限公司 A kind of method of enhanced biological electrochemical in-situ pollution waters restoration

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