CN106450361B - A kind of preparation method and application of waste bacterium rod carbon anode - Google Patents
A kind of preparation method and application of waste bacterium rod carbon anode Download PDFInfo
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- CN106450361B CN106450361B CN201610834222.2A CN201610834222A CN106450361B CN 106450361 B CN106450361 B CN 106450361B CN 201610834222 A CN201610834222 A CN 201610834222A CN 106450361 B CN106450361 B CN 106450361B
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- bacterium rod
- waste bacterium
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- waste
- carbon anode
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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
- H01M4/96—Carbon-based electrodes
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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
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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
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- 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 preparation method of waste bacterium rod carbon anode and its applications in microbiological fuel cell.Compared with traditional carbon brush anode, the maximum power density of waste bacterium rod carbon anode can improve 1 times or more；Waste bacterium rod carbon anode preparation method is simple, eliminates complicated hydrochloric acid embathes step, and the cost of raw material is cheap, is suitable for large-scale industrial production, provides completely new application model for the resource utilization of waste bacterium rod.
Description
Technical field
The invention belongs to discarded edible mushroom stick resource utilization fields, relate more specifically to a kind of system of waste bacterium rod carbon anode
Preparation Method and application.
Background technique
Current Edible Fungi has generallyd use the factorial production mode, in large scale, can be left after production big
Cultivation waste material --- the waste bacterium rod of amount such as handles not in time, can occupy a large amount of soils, pollute the environment.Although waste bacterium rod
The nutrition that can be utilized by cultivation mushroom has exhausted, no longer bacterium out, but also contains a large amount of crude fibres and crude protein.Therefore, waste bacterium rod
The potentiality for having resourcable transformation.
At present there are mainly three types of the resource utilization modes of waste bacterium rod: one is formed into fertilizer, will be given up by microbial action
The difficult substance being utilized is converted into the nutriment that can be utilized in bacteria stick, is re-used for cultivating and plant；Second is that as auxiliary
Property feed stripped, and dregs of beans, the main feed such as wheat bran is used in mixed way, and reduces feed cost；Third is that for production mechanism charcoal and
Biological coal.
Microbiological fuel cell is a kind of directly to turn the chemical energy in organic matter using electricity-producing microorganism as anode catalyst
The device for turning to electric energy has broad application prospects in wastewater treatment and new energy development field.If can be by waste bacterium rod
The energy of recycling treatment and microbiological fuel cell organically combines, and will have very much realistic meaning.Therefore, it develops a kind of completely new
Waste bacterium rod carbon anode preparation method, not only improved the economic value of waste bacterium rod, but also reduce environmental pollution, while bringing the energy
Transformation benefit, killing three birds with one stone have very high practical value.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method and applications of waste bacterium rod carbon anode.
The technical solution used in the present invention is:
A kind of preparation method of waste bacterium rod carbon anode, comprising the following steps:
(1) by waste bacterium rod drying, crushing, sieving；
(2) waste bacterium rod dry powder is rolled in flakes；
(3) tabletting is carbonized under anaerobic condition, obtains waste bacterium rod carbon electrode.
It is in blocks by being rolled after 0~20% weight ratio mixed coconut shell powder in waste bacterium rod dry powder, waste bacterium rod dry powder, coconut
Shell powder is 60~80 mesh, and moisture content≤10%, applying pressure when grinding piece is 10~30MPa.
Applying pressure when preferably, grinding piece is 20MPa.
Carburizing temperature is 800~900 DEG C, and carbonization time is 2~3 h.
The beneficial effects of the present invention are:
Compared with traditional carbon brush anode, waste bacterium rod carbon anode prepared by the present invention is applied in microbiological fuel cell,
Maximum power density can improve 1 times or more.
Waste bacterium rod carbon anode preparation method provided by the invention is simple, eliminates complicated hydrochloric acid embathes step, and former material
Expect it is low in cost, be suitable for large-scale industrial production, provide completely new application model for the resource utilization of waste bacterium rod.
Detailed description of the invention
Fig. 1: the preparation flow exemplary diagram of waste bacterium rod carbon anode；
Fig. 2: under different tableting pressures, the SEM of waste bacterium rod carbon anode schemes (100 times, A:10MPa, B:20MPa)；
Fig. 3: microorganism is attached to the electron microscope (10000 times) of waste bacterium rod carbon anode；
Fig. 4: different carbon anodes are applied to the electricity production curve of microbiological fuel cell；
Fig. 5: different carbon anodes are applied to the power density curve of microbiological fuel cell.
Specific embodiment
Specific embodiment is only explanation of the invention, and it is not intended to limit the protection scope of the present invention.
Embodiment 1
Waste bacterium rod carbon anode is prepared by raw material of seafood mushroom waste bacterium rod, the specific steps are as follows:
(1) seafood mushroom waste bacterium rod is dried to moisture content≤10% in 60 DEG C, is crushed to 60 mesh；
(2) the seafood mushroom waste bacterium rod powder after taking 3g to be sieved is placed in the stainless steel mould that internal diameter is 3cm, uses tablet press machine
It is rolled at 10,20 MPa respectively in flakes；
(3) tabletting is placed in tube furnace, 900 DEG C of anaerobic high temperature carbonizations, carbonization time is 2 h, and it is useless to obtain seafood mushroom
Bacteria stick carbon anode.
The present embodiment preparation flow is shown in Fig. 1, and bacteria stick powder color is loess color before testing, and color becomes black after tabletting carbonization
Color, and tablet molding is good, without fragmentation after carbonization.
Under different tableting pressures, the electron microscope of the waste bacterium rod carbon electrode of preparation is shown in Fig. 2.Wherein, Fig. 2A is tableting pressure
The waste bacterium rod carbon electrode prepared under 10MPa, Fig. 2 B are the waste bacterium rod carbon electrode for preparing under tableting pressure 20MPa, it is seen that 20MPa and
The tableting pressure of 10MPa can make the waste bacterium rod carbon anode molding of preparation good, and the slight crack under 20MPa is few, and consistency is more preferably.It splits
Trace position does not grow microorganism, therefore the few electrode of slight crack is more advantageous to the electricity generation performance of microbiological fuel cell.
Embodiment 2
Waste bacterium rod carbon anode is prepared using tremella waste bacterium rod and cocoanut shell as raw material, the specific steps are as follows:
(1) tremella waste bacterium rod is dried to moisture content 10% hereinafter, being crushed to 80 mesh in 60 DEG C；
(2) cocoanut shell is cut into the cm of cm × 0.5 of 5.0 cm × 1.5, be dried in 60 DEG C moisture content 10% with
Under, it is crushed to 80 meshes；
(3) the tremella waste bacterium rod powder after sieving is mixed with coconut shell powder by 0,10%, 20% mass ratio, takes the mixing of 3g
Object is placed in the stainless steel mould that internal diameter is 3cm, is rolled at 20MPa with tablet press machine in flakes；
(4) tabletting is placed in tube furnace, carries out 800 DEG C of anaerobic high temperature carbonizations, carbonization time is 3 h, obtains three kinds
Tremella waste bacterium rod carbon anode.
Embodiment 3
Application of the different waste bacterium rod carbon anodes in microbiological fuel cell, concrete operations are as follows:
(1) building of single-chamber microbial fuel cell:
Battery chamber is the cuboid organic glass of the cm × 4 of 6 cm × 6 cm, and it is 3 cm that centre, which hollows out out diameter, high
Degree is the cylindrical body of 4 cm, and internal dischargeable capacity is 28 mL.
Negative electricity extremely platinum-carrying carbon cloth, manufacturing process is as follows: carbon cloth first being carried out to 30% PTFE silicic acid anhydride, then
It coats carbon based layer on one side wherein, coats 4 layers of PTFE air diffusion layer in another side, finally coat platinum in the opposing face of diffusion layer
Catalytic Layer, platinum dosage are 0.5 mg/m2, round, effective area is 7 cm2(3 cm of diameter), using air as cathode electronics by
Body.
The seafood mushroom waste bacterium rod carbon anode that embodiment 1 prepared at 20MPa, prepared by embodiment 23 is respectively adopted in positive electrode
Kind of tremella waste bacterium rod carbon electrode, hydrochloric acid embathe after waste bacterium rod carbon electrode, carbon brush anode.Waste bacterium rod carbon after wherein hydrochloric acid embathes
The manufacturing process of anode is: waste bacterium rod carbon anode prepared by embodiment 1 being cooled to 25 DEG C, the hydrochloric acid for being 5% with mass fraction is molten
Liquid embathe 20min after, washed, dried to water content≤10%.
(2) operation of single-chamber microbial fuel cell
It is inoculated with 5 mL anaerobic sludges (being derived from Fuzhou City Kingsoft sewage treatment plant) and the starting operation of 23 mL sodium acetate matrix.
Sodium acetate matrix components are as follows: NaH2PO4·2H2O (2.77 g/L), Na2HPO4·12H2O (11.40 g/L), NH4Cl(0.31
G/L), KCl (0.13 g/L), vitamin solution (12.5 mL/L) and trace element solution (12.5 mL/L).
Microbiological fuel cell is placed in 30 DEG C of insulating boxs and is cultivated, electricity production voltage uses data collection system
The voltage signal at (Keithley 2700, the U.S.) every 15 minutes acquisition both ends one-shot battery extrernal resistance (Ω of R=1000), draws electricity production
Curve；After stablizing, Electronic Speculum observation microorganism is attached to the situation on waste bacterium rod carbon anode；Reach the stabilization sub stage in battery, from
50 Ω to 2000 Ω change battery extrernal resistance, record the corresponding voltage of each extrernal resistance.
The SEM figure that microorganism is attached to waste bacterium rod carbon anode is as shown in Figure 3, it is seen that a large amount of microorganism adsorptions are in waste bacterium rod carbon
On anode.
The electricity production curve and power density Dependence Results of microbiological fuel cell operation are as shown in Figure 4, Figure 5, and traditional
Carbon brush electrode compares, and the voltage and power density of seafood mushroom waste bacterium rod carbon anode and tremella waste bacterium rod carbon anode are significantly better than
Traditional carbon brush anode, wherein maximum power density is up to 832 mW/m2, it is 2.4 times of traditional carbon brush anode；The result is also better than having
Hydrochloric acid embathes (735 mW/m of maximum power density of waste bacterium rod carbon anode made from step2), illustrate that the present invention can save traditional work
Complicated hydrochloric acid embathes step in skill, operates easier.
There are higher electricity production voltage and power density using carbon anode prepared by tremella waste bacterium rod, wherein addition 20%
844 mW/m of tremella waste bacterium rod carbon anode made from cocoanut shell2) and addition 10% cocoanut shell tremella waste bacterium rod carbon anode maximum work
Rate density (849 mW/m2) better than tremella waste bacterium rod carbon anode maximum power density (828 mW/m for being not added with cocoanut shell2), it says
Bright addition cocoanut shell has facilitation to the electricity production of the waste bacterium rod carbon anode of preparation.
Claims (5)
1. a kind of preparation method of waste bacterium rod carbon anode, comprising the following steps:
(1) by waste bacterium rod drying, crushing, sieving, waste bacterium rod dry powder is obtained；
(2) quality in waste bacterium rod dry powder by 10~20% obtains tabletting than rolling after mixed coconut shell powder in flakes；
(3) tabletting is carbonized under anaerobic condition, obtains waste bacterium rod microbiological fuel cell carbon electrode.
2. preparation method according to claim 1, it is characterised in that: waste bacterium rod dry powder, coconut shell powder are 60~80 mesh, water
Divide content≤10%.
3. preparation method according to claim 1, it is characterised in that: applying pressure when grinding piece is 10~30MPa.
4. preparation method according to claim 1, it is characterised in that: applying pressure when grinding piece is 20MPa.
5. preparation method according to claim 1, it is characterised in that: carburizing temperature is 800~900 DEG C, carbonization time 2
~3 h.
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| CN201610834222.2A CN106450361B (en) | 2016-09-20 | 2016-09-20 | A kind of preparation method and application of waste bacterium rod carbon anode |
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| CN106450361B true CN106450361B (en) | 2019-11-26 |
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| CN101575097A (en) * | 2009-06-12 | 2009-11-11 | 国家林业局林产工业规划设计院 | Method for preparing active carbon from fungus sticks of waste edible fungi |
| CN102780010A (en) * | 2012-08-07 | 2012-11-14 | 青岛科技大学 | Preparation method of composite anode of microbial fuel cell with carbon-base material modified by conductive complex |
| CN105542892A (en) * | 2015-10-16 | 2016-05-04 | 福建省中延菌菇业有限公司 | Method for preparing biomass fuel by using domestic fungus waste bars |
| CN105541424A (en) * | 2015-10-25 | 2016-05-04 | 福建省中延菌菇业有限公司 | Method for producing organic fertilizer by using domestic fungus waste bars |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5232999B2 (en) * | 2007-05-11 | 2013-07-10 | 国立大学法人群馬大学 | Method for producing electrode catalyst for carbon-based fuel cell |
| US8574758B2 (en) * | 2009-07-08 | 2013-11-05 | Mitsubishi Rayon Co., Ltd. | Porous electrode substrate and method for producing the same |
| CN103904328B (en) * | 2014-04-01 | 2016-04-27 | 华南师范大学 | A kind of preparation method of biomass lamella material with carbon element and application thereof |
-
2016
- 2016-09-20 CN CN201610834222.2A patent/CN106450361B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575097A (en) * | 2009-06-12 | 2009-11-11 | 国家林业局林产工业规划设计院 | Method for preparing active carbon from fungus sticks of waste edible fungi |
| CN102780010A (en) * | 2012-08-07 | 2012-11-14 | 青岛科技大学 | Preparation method of composite anode of microbial fuel cell with carbon-base material modified by conductive complex |
| CN105542892A (en) * | 2015-10-16 | 2016-05-04 | 福建省中延菌菇业有限公司 | Method for preparing biomass fuel by using domestic fungus waste bars |
| CN105541424A (en) * | 2015-10-25 | 2016-05-04 | 福建省中延菌菇业有限公司 | Method for producing organic fertilizer by using domestic fungus waste bars |
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