CN107180975A - A kind of modified biomass NACF cage air cathode and the microbiological fuel cell of assembling - Google Patents

A kind of modified biomass NACF cage air cathode and the microbiological fuel cell of assembling Download PDF

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Publication number
CN107180975A
CN107180975A CN201710524299.4A CN201710524299A CN107180975A CN 107180975 A CN107180975 A CN 107180975A CN 201710524299 A CN201710524299 A CN 201710524299A CN 107180975 A CN107180975 A CN 107180975A
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cage
nacf
air cathode
fuel cell
modified biomass
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夏世斌
邓墨扬
万芳
刘琪
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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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
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/8605—Porous electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
    • H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8825—Methods for deposition of the catalytic active composition
    • H01M4/8828—Coating with slurry or ink
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/96—Carbon-based electrodes
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a kind of modified biomass NACF cage air cathode and the microbiological fuel cell of assembling, using column activated carbon from activated sludge fibre cage as negative electrode, and be modified by brushing functional layer on its surface, it can dramatically the output voltage and electricity production for improving microbiological fuel cell and keep higher mechanical strength, and the preparation method that is related to is simple, cost is low, is adapted to popularization and application.

Description

A kind of modified biomass NACF cage air cathode and the Microbial fuel of assembling Battery
Technical field
The invention belongs to field of fuel cell technology, and in particular to a kind of modified biomass NACF cage air cathode And the microbiological fuel cell of assembling.
Background technology
At present, existing energy utilization patterns are primarily present the problems such as inefficient, non-renewable, environmental pollution is serious. And the current fossil fuel mainly used, either oil or colliery, can all produce the temperature of a large amount of pollution air after combustion Room gas；They are the problem of also face reserves critical shortage simultaneously, and are exploiting and using efficiency in link is low, pollution weight. So, development clean energy resource is concerned always.
Microbiological fuel cell (Microbial Fuel Cell, the MFC) research and development risen are production of renewable energy resources A new way is provided with offal treatment.Microbiological fuel cell is a kind of by the use of microorganism as catalyst, by fuel In chemical energy be converted into the bioreactor of electric energy.Typical MFC devices are made up of cathodic region and anode region, two regions Between separated by PEM.Its operation principle is：On anode region surface, organic matter (such as grape in the aqueous solution or sludge Sugar, acetic acid, polysaccharide and other degradable organic matters etc.) in the case where anode microorganism etc. acts on, produce CO2, proton and electronics；Electricity Son transmits electron by intermediate or cell membrane, and reaches negative electrode by external circuit, and proton is moved to after negative electrode by solution With O2Reacted generation water, so that whole process reaches the balance of material and electric charge, and outside electrical appliance is also obtained Electric energy.The electronics transmitted via external circuit is reached after negative electrode, with oxidation state species (i.e. electron acceptor, such as O2) and anode In cathode surface reduction reaction occurs for the proton that migration comes.Rate of reduction of the electron acceptor on electrode is to determine battery output work The key factor of rate, therefore the selection of cathode material is to influence the key of MFC efficiency of fuel cell generation.
Cathode material generally uses carbon cloth, graphite or carbon paper for stock, but directly using effect is not good, can pass through Load high activated catalyst is improved.The MFC studied at present is mostly catalyst using platinum, carries platinum electrode and is more easy to combine oxygen, It is catalyzed itself and electrode reaction.Oh et al. researchs are found, the MFC output electric energy only surface platinum plating that graphite makees electrode is used alone The 22% of graphite electrode.Cheng et al. have studied electrode and carry influence of the platinum amount to battery performance, find when platinum is by 2mg/cm2Subtract As little as 0.1mg/cm2When, performance slightly has reduction.The research advantageously reduces the consumption of platinum, so as to reduce MFC cost.At present, MFC cathode electronics acceptor is broadly divided into two kinds of liquid phase negative electrode and air cathode, and the most frequently used electron acceptor is O2, water is divided into again Middle two kinds of dissolved oxygen and gaseous oxygen.Liquid phase negative electrode MFC reactions are carried out in the solution, and mass transfer conjunction reaction resistance is small, so this shape The battery of formula is commonly available higher power output, but its disadvantage is to need constantly to supplement electrolyte to negative electrode, And cathode product may bring secondary pollution, therefore be not suitable for practical engineering application；Air cathode MFC is using in air O2As electron acceptor, but oxygen molecule is very slow, it is necessary to use noble metal in the three-phase reduction reaction rate that cathode surface occurs Platinum reduces the overpotential loss of reaction as catalyst, and this considerably increases the cost of fuel cell.In addition, metal ion may The catalyst poisoning of negative electrode can be caused, causes system operation to fail.Therefore further explore and optimize microbiological fuel cell the moon Pole structure has important research and application value.
The content of the invention
The purpose of the present invention is that the limitation of breakthrough conventional cathode material is empty there is provided a kind of modified biomass NACF cage Gas negative electrode and the microbiological fuel cell of assembling, using column activated carbon from activated sludge fibre cage as negative electrode, and by being brushed on its surface Apply functional layer to be modified, can dramatically the output voltage and electricity production that improve microbiological fuel cell and the higher machinery of holding is strong Degree, and the preparation method being related to is simple, cost is low, is adapted to popularization and application.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of modified biomass NACF cage air cathode, it is coated carbon-based by column-shaped active carbon fibre cage surface Layer, diffusion layer and Catalytic Layer are formed, and specific preparation process is as follows：
1) preparation of carbon based layer, the mixed liquor I that stirred to obtain in polytetrafluoroethylsolution solution I is added by carbon black, by it along post The axis direction of shaped activated carbon fibre cage is uniformly brushed in the upper surface of column-shaped active carbon fibre cage, and 350- is heated to after drying 400 DEG C of insulation 20-30min, obtain carbon based layer (thickness is 0.1-0.2mm)；
2) polytetrafluoroethylsolution solution II is brushed in the carbon-based layer surface of gained, 350-400 DEG C of insulation 10- is heated to after drying Diffusion layer is cooled down to obtain under 15min, room temperature condition (thickness is 0.1-0.2mm)；
3) it is repeated in step 1) and step 2) 3~5 times；
4) Pt/C catalyst, water, Nafion solution and isopropanol are well mixed to obtain mixed liquor I I, it is active along column The axis direction of Carbon fibe cage is uniformly brushed in the lower surface of column-shaped active carbon fibre cage, is then stored at room temperature and is dried to obtain Catalytic Layer (thickness is 0.2-0.4mm), produces the modified biomass NACF cage air cathode.
In such scheme, the mass concentration of the polytetrafluoroethylsolution solution I is 35-45%；Polytetrafluoroethylsolution solution II's Mass concentration is 55-65%.
In such scheme, carbon based layer, diffusion layer and lower surface prepared by the column-shaped active carbon fibre cage upper surface is coated Catalytic Layer be not directly contacted with.
In such scheme, step 1) described in the quality of carbon black and polytetrafluoroethylsolution solution I volume ratio be 1:(10-15) g:ml。
In such scheme, the mass concentration of the Nafion solution is 3-7%.
In such scheme, step 4) described in Pt/C catalyst, water, the mass ratio of Nafion solution and isopropanol be 1: (0.8-1):(6-7):(3-4)。
In such scheme, the preparation method of the column-shaped active carbon fibre cage comprises the following steps：1) luffa is cut To cylindric luffa section, then as immersion treatment is carried out in sodium hydroxide solution (concentration is 2~3wt%), then wash To neutral and dry (90-105 DEG C)；2) by through step 1) (mass concentration is for luffa section and the water soluble phenol resin of processing 35-37%) it is sufficiently mixed, carries out impregnation process (12-24h) and dry；3) by step 2) products therefrom pre-oxidized successively Charing and activation；4) gained is carried out to pickling (1mol/L salt acid soak 2h), drying successively, the NACF is produced Cage.
In such scheme, the pre-oxidation carbonization temperature is 200-300 DEG C, and the time is 100~120min, and activation temperature is 800-850 DEG C, the time is 80~90min.
A kind of microbiological fuel cell for assembling above-mentioned modified biomass NACF cage air cathode, it uses single chamber Structure, including cell apparatus and connection circuit, the cell apparatus include reaction vessel and the battery being arranged in reaction vessel Anode, modified biomass NACF cage air cathode and electrolyte；Galvanic anode is arranged on reaction container bottom, modified life Species activity Carbon fibe cage air cathode parallel interval is arranged on above galvanic anode, and partial wetting is in the electrolytic solution；Battery Anode material is carbon felt.
In such scheme, the volume submergence of the cage type negative electrode is than being 30-80%.
In such scheme, the connection circuit includes wire and outer meeting resistance, using wire that galvanic anode and cage type is cloudy Pole and outer meeting resistance connect to form closed circuit.
In such scheme, also include data collecting system in the microbiological fuel cell of the assembling cage type negative electrode, use Wire is connected in parallel data collecting system with outer meeting resistance, measures and record the output voltage of microbiological fuel cell.
In such scheme, the carbon felt is the carbon felt uniformly passed around using titanium silk.
In such scheme, the electrolyte is formed by sludge and anode nutrient solution mixed preparing, or directly uses stain disease.
The method of microbiological fuel cell of the present invention electricity production is：Reaction vessel is injected the electrolyte into, is connected using wire The galvanic anode and cage type negative electrode are connect, the external circuitses are then constituted by closed circuit using wire, then Parallel Data Acquisition system, you can measurement records the output voltage of microbiological fuel cell immediately.
Beneficial effects of the present invention are：
1) modified biomass NACF cage air cathode of the present invention uses electrode coating method, first to bio-based Brush carbon based layer, the electric conductivity of increase current-collecting member (column-shaped active carbon fibre cage), Ran Houjin in material (luffa section) surface One step brushes diffusion layer in carbon based layer, realizes waterproof using its hydrophobicity and special permeability and controls oxygen mass transfer Function, oxygen via diffusion layer through current-collecting member reach Catalytic Layer when, by being reacted with Catalytic Layer contact, and at it Water is reduced under effect, negative electrode half-reaction is completed, the effect of enhancing MFC electricity generation performances is integrally reached；In addition the application passes through Respectively in bio-based materials side brushing carbon based layer, transport layer, Catalytic Layer is brushed in another side surface, cloudy significantly improving gained On the basis of the material conductivity of pole, its gas permeability can be effectively improved, while utilizing the knot between metal platinum and NACF cage Performance is closed, the mechanical property of gained cathode material can be effectively lifted.
2) microbiological fuel cell of the present invention can be using stain disease as carbon source, degrade persistence organic pollutant or difficulty Degradation material (such as dyestuff intermediate DCB3.3'-dichlorobenzidine hydrochloride), with good environmental benefit.
3) microbiological fuel cell of the present invention can be substantially reduced the generation of solid waste and realize the production of new electric energy It is raw；Without aeration, it is only necessary under conditions of ventilation, the chance that stink is discharged to surrounding environment is reduced, with good Economy and environmental benefit.
Brief description of the drawings
Fig. 1 is the structure chart of the gained modified biomass NACF cage air cathode of the embodiment of the present invention 1；
Fig. 2 is the structural representation of microbiological fuel cell described in the embodiment of the present invention 2；
Fig. 3 is the diagrammatic cross-section of microbiological fuel cell described in the embodiment of the present invention 2；
In figure, 1 be galvanic anode, 2 be sewage, 3 be cage type negative electrode, 4 be reaction vessel, 5 be wire, 6 be outer meeting resistance, 7 be data collecting system.
Fig. 4 is the output voltage comparison diagram of the embodiment of the present invention 2 and the gained microbiological fuel cell of comparative example 1.
Fig. 5 is the electricity production comparison diagram of the embodiment of the present invention 2 and the gained microbiological fuel cell of comparative example 1.
Fig. 6 is the output voltage comparison diagram of the embodiment of the present invention 2 and the gained microbiological fuel cell of comparative example 2.
Fig. 7 is the output voltage comparison diagram of the embodiment of the present invention 2 and the gained microbiological fuel cell of comparative example 3.
Embodiment
For a better understanding of the present invention, with reference to the specific embodiments and the drawings content that the present invention is furture elucidated, But present disclosure is not limited solely to the following examples.
In following examples, the preparation method of the column-shaped active carbon fibre cage comprises the following steps, 1) luffa is cut Cut to cylindric luffa section (about 10 centimetres of diameter, about 10 centimetres of length), then as sodium hydroxide solution (concentration 2wt%) Middle carry out immersion treatment, is then washed to neutral and dries (100 DEG C)；2) will be through step 1) the luffa section of processing with it is water-soluble Phenolic resin (content is 36%) is sufficiently mixed, and is carried out impregnation process (24h) and is dried；3) by step 2) products therefrom enters successively Row pre-oxidation charing (200 DEG C, 120min) and activation (850 DEG C, 90min)；4) gained is carried out to pickling (1mol/L salt successively Acid soak 1h), drying (105 DEG C), produce the NACF cage.
In following examples, the second pond sludge that the sewage activated sludge used provides for Lake Tangxun sewage treatment plant；Sun Pole nutrient solution is formulated by glucose, PBS, vitamin, mineral matter and water, and the addition requirement of each component is：Portugal Grape sugar 1g, PBS 982.5mL, vitamin 2g (vitamin B6 1g, vitamin B2 0.5g, vitamin B1 0.5g), ore deposit Material (NaCl 1g, MgSO43g, NTA 1.5g) 5.5g, water 1L.
Embodiment 1
A kind of modified biomass NACF cage air cathode, its preparation method comprises the following steps:
1) preparation of carbon based layer, 0.5g carbon blacks are added 6mL mass concentrations to stir in 40% PTFE solution Mixed liquor I, by its uniform brushing in the upper surface of column-shaped active carbon fibre cage, is heated to 370 DEG C of insulation 20-30min after drying, Obtain carbon based layer (thickness is 0.1-0.2mm)；2) the PTFE solution that mass concentration is 60% is brushed in the carbon-based layer surface of gained, dried After be heated to 370 DEG C of insulation 10-15min, cool down to obtain diffusion layer under room temperature condition (thickness is 0.1-0.2mm)；3) it is repeated in Step 1) and 2) three times；4) 0.3gPt/C catalyst, 0.25g deionized waters, 2g Nafion solutions and 1g isopropanols are mixed equal Even mixed liquor I I, it uniformly is brushed in NACF cage lower surface (carbon based layer prepared by upper surface, diffusion layer and under The Catalytic Layer of surface coating is not directly contacted with), then it is stored at room temperature and dries to obtain Catalytic Layer (thickness is 0.3mm), produces described change Property activated carbon from activated sludge fibre cage air cathode (product structure figure is shown in Fig. 1).
After tested, the present embodiment do not carry out it is coating modified before the compression strength of (column-shaped active carbon fibre cage) be 0.246MPa, the compression strength of (modified biomass NACF cage air cathode) is up to 0.34MPa after coating modified.
Embodiment 2
A kind of microbiological fuel cell for assembling cage type negative electrode, its structural representation is shown in Fig. 2 (diagrammatic cross-section is shown in Fig. 3), The galvanic anode 1 (circular carbon felt) and modified biomass NACF cage that it includes reaction vessel 4 and is provided at its inner portion are empty Gas negative electrode 3, galvanic anode 1 is arranged on the bottom of reaction vessel 4, the parallel interval of modified biomass NACF cage air cathode 3 It is arranged on the top of galvanic anode 1, and partial wetting (volume submergence is than being 50%) in sewage 2, wire 5 is by the He of galvanic anode 1 Modified biomass NACF cage air cathode 3 and the connection of outer meeting resistance 6 form closed circuit, and in parallel with outer meeting resistance 6 Connect data collecting system 7.
Microbiological fuel cell described in the present embodiment by sewage activated sludge and anode nutrient solution before use, press 1：1 matter Amount puts up with wire circuit than being sufficiently mixed in addition reaction vessel, connects after unstable operation at system initial stage External resistance and voltage automated collection systems are connected, real-time magnitude of voltage can be recorded automatically every 1min systems, m- voltage during gained Curve is shown in Fig. 4, as seen from the figure, and its maximum voltage is output as 329.45mV；The accumulative production of biological fuel cell obtained by the present embodiment Electricity is 20.67C (see Fig. 5).
Comparative example 1
A kind of microbiological fuel cell, the preparation method of its cathode material used is roughly the same with embodiment 1, difference It is in and is modified in not coating carbon based layer, diffusion layer and Catalytic Layer to NACF cage surface, other structures and embodiment 2 The microbiological fuel cell structure is identical.
The maximum voltage output of microbiological fuel cell obtained by this comparative example and add up electricity production be respectively 199mV and 13.48C (see Fig. 4 and Fig. 5)；After gained microbiological fuel cell progress of the invention is coating modified, it can dramatically and lift its electricity production property Energy.
Comparative example 2
A kind of microbiological fuel cell, the preparation method of its cathode material used is roughly the same with embodiment 1, difference Be in the preparation process 1 of column modified biomass NACF cage air cathode) in the addition of PTFE solution be respectively 10mL and 14mL, other structures are identical with microbiological fuel cell structure described in embodiment 2.
Microbiological fuel cell obtained by this comparative example with the output voltage comparison diagram of embodiment 2 is shown in Fig. 6.As a result show with The increase of PTFE solution contents, output voltage is gradually reduced, when PTFE solution contents increase to 14mL, voltage output reduces For 124.65mV, downward trend is obvious.
Comparative example 3
A kind of microbiological fuel cell, the preparation method of its cathode material used is roughly the same with embodiment 1, difference Be in the preparation process 1 of column modified biomass NACF cage air cathode) in carbon black consumption be respectively 0.2g and 0.8g, other structures are identical with microbiological fuel cell structure described in embodiment 2.
Microbiological fuel cell obtained by this comparative example with the output voltage comparison diagram of embodiment 2 is shown in Fig. 7.As a result show Under conditions of fixed PTFE additions, the trend that cell output voltage reduces afterwards with the increase of carbon powder content in first increasing.
Above example is only the preferred embodiment of the present invention, it is noted that to those skilled in the art, Do not depart under the premise of raw material of the present invention, made some improvement also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of modified biomass NACF cage air cathode, it by column-shaped active carbon fibre cage surface coat carbon based layer, Diffusion layer and Catalytic Layer are formed, and specific preparation process is as follows：
1) preparation of carbon based layer, adds the mixed liquor I that stirred to obtain in polytetrafluoroethylsolution solution I by carbon black, it is lived along column Property Carbon fibe cage axis direction uniformly brush in the upper surface of column-shaped active carbon fibre cage, be heated to 350-400 DEG C after drying 20-30min is incubated, carbon based layer is obtained；
2) polytetrafluoroethylsolution solution II is brushed in the carbon-based layer surface of gained, 350-400 DEG C of insulation 10-15min is heated to after drying, Diffusion layer is cooled down to obtain under room temperature condition；
3) it is repeated in step 1) and step 2) 3~5 times；
4) Pt/C catalyst, water, Nafion solution and isopropanol are well mixed to obtain mixed liquor I I, it is fine along column-shaped active carbon The axis direction of dimension cage is uniformly brushed in the lower surface of column-shaped active carbon fibre cage, is then stored at room temperature and is dried to obtain Catalytic Layer, i.e., Obtain the modified biomass NACF cage air cathode.
2. modified biomass NACF cage air cathode according to claim 1, it is characterised in that the polytetrafluoro Vinyl solution I mass concentration is 35-45%；Polytetrafluoroethylsolution solution II mass concentration is 55-65%.
3. modified biomass NACF cage air cathode according to claim 1, it is characterised in that the column is lived Property Carbon fibe cage upper surface prepare carbon based layer, diffusion layer and lower surface coating Catalytic Layer be not directly contacted with.
4. modified biomass NACF cage air cathode according to claim 1, it is characterised in that step 1) in institute It is 1 that the quality of carbon black, which is stated, with polytetrafluoroethylsolution solution I volume ratio:(10-15)g:ml.
5. modified biomass NACF cage air cathode according to claim 1, it is characterised in that the Nafion The mass concentration of solution is 3-7%.
6. modified biomass NACF cage air cathode according to claim 1, it is characterised in that the column is lived The preparation method of property Carbon fibe cage comprises the following steps：1) luffa is cut to cylindric luffa section, then as hydrogen-oxygen Change in sodium solution and carry out immersion treatment, be then washed to neutral and dry；2) will be through step 1) processing luffa section with it is water-soluble Property phenolic resin be sufficiently mixed, carry out impregnation process simultaneously dry；3) by step 2) products therefrom carry out successively pre-oxidation charing and Activation；4) gained is carried out to pickling, drying successively, the column-shaped active carbon fibre cage is produced.
7. modified biomass NACF cage air cathode according to claim 6, it is characterised in that the pre-oxidation Carbonization temperature is 200-300 DEG C, and the time is 100~120min, and activation temperature is 800-850 DEG C, and the time is 80~90min.
8. a kind of microbiological fuel cell for assembling modified biomass NACF cage air cathode, it is characterised in that it is adopted With single cell structure, including cell apparatus and connection circuit, the cell apparatus includes reaction vessel and is arranged in reaction vessel Galvanic anode, modified biomass NACF cage air cathode and electrolyte；Galvanic anode is arranged on reaction container bottom, Modified biomass NACF cage air cathode parallel interval is arranged on above galvanic anode, and partial wetting is in electrolyte In；Battery anode material is carbon felt.
9. microbiological fuel cell according to claim 8, it is characterised in that the volume of the cage type negative electrode submerges ratio and is 30-80%.
10. microbiological fuel cell according to claim 8, it is characterised in that the microorganism of the assembling cage type negative electrode Also include data collecting system in fuel cell, data collecting system is connected in parallel using wire and outer meeting resistance, measures and remembers Record the output voltage of microbiological fuel cell.
CN201710524299.4A 2017-06-30 2017-06-30 A kind of modified biomass NACF cage air cathode and the microbiological fuel cell of assembling Pending CN107180975A (en)

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CN109244515A (en) * 2018-09-25 2019-01-18 盛世生态环境股份有限公司 A kind of microbiological fuel cell and its application method for organophosphorus pesticide monitoring
CN109244515B (en) * 2018-09-25 2022-01-11 盛世生态环境股份有限公司 Microbial fuel cell for monitoring organophosphorus pesticide and use method thereof

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Application publication date: 20170919