CN203545779U - Biological cathode single-chamber membrane-less microorganism electrolytic tank - Google Patents
Biological cathode single-chamber membrane-less microorganism electrolytic tank Download PDFInfo
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- CN203545779U CN203545779U CN201320576075.5U CN201320576075U CN203545779U CN 203545779 U CN203545779 U CN 203545779U CN 201320576075 U CN201320576075 U CN 201320576075U CN 203545779 U CN203545779 U CN 203545779U
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Abstract
The utility model discloses a biological cathode single-chamber membrane-less microorganism electrolytic tank, comprising a single-chamber membrane-less reaction chamber, wherein a water inlet and a water outlet are formed in the single-chamber membrane-less reaction chamber; a baffle plate is arranged between the water inlet and the water outlet; the upper edge of the water inlet is slightly higher than the lower edge of the baffle plate; an electrolytic anode is arranged on one side of the baffle plate and an electrolytic cathode is arranged on the other side; a modified electrode is arranged between the electrolytic cathode and the baffle plate; the electrolytic anode, the electrolytic cathode and the modified electrode are all in circuit connection with a direct-current power supply; and the areas of electrolytic anode, the modified electrode and the electrolytic cathode are increased successively. Due to adoption of the structure comprising the electrolytic anode, the electrolytic cathode and the modified electrode, the electrolytic tank disclosed by the utility model is obvious better than the prior art, and therefore the low-cost and rapid construction and operation of a full bio-electrode microorganism electrolytic tank is realized.
Description
Technical field
The utility model relates to microorganism electrochemical field, relates in particular to a kind of biological-cathode single chamber membraneless microbiological electrolyzer.
Background technology
Biological-cathode has that cost of investment is low, running cost is low, can Natural re generation, can tame the features such as adaptation.The negative electrode of microorganism electrolysis cell adopts biological-cathode, can greatly reduce construction cost and the running cost of microorganism electrolysis cell.At present in the world to producing H without amboceptor
2the research of biological-cathode, in the Proof of Concept stage at the early-stage, not yet retrieves the processing mode of microorganism electrolysis cell biological-cathode at present.
First Rozendal in 2008 etc. have proved product H from conceptive use half pond bioelectrode
2the feasibility of biological-cathode.First utilize graphite felt to do electrode and carry out sodium acetate domestication mixed biologic anode, after pass into H
2domestication oxidation H
2ability, and then product H is in reversion
2biological-cathode.Reach-the 1.2A/m of current density producing for-0.7V (vs SHE) in the situation that at cathode potential in the time of the 25th day
2-negative electrode shadow area.The product H of every day
2speed reaches 0.63m
3h
2/ m
3-cathode volume, produces H at the test period negative electrodes of 48 hours
2efficiency reaches 49%.Although the negative electrode of this experiment domestication time is not long, domestication needs multiple links, and anode is chemical anode, and uses H
2domestication, has limited its engineering application.Its mixed bacterial analysis shows, produces H
2mushroom on biological-cathode has 46% mycetozoan, 25% heavy wall bacterium, 17% bacterioide and other bacterium of 12%.
Jeremiasse in 2010 etc. prove that from principle negative electrode and anode have the full microorganism electrolysis cell (MEC) of electroactive microorganism catalysis normally to move for the first time.While at cathode potential being-0.7V (vs SHE), current density is up to 3.3A/m
2-negative electrode shadow area.The electrically-active bacterium of its negative electrode control oneself operation biological-cathode MEC.This device is finally because of cathodic deposition Ca
3(PO
4)
2, the catalytic efficiency that makes negative electrode greatly reduces and is out of service.
The people such as Jeanine in 2011 produce H with the bacillus inoculation domestication of bright sulfur reduction ground
2biological-cathode is obtained successfully, but current density reaches 0.44A/m when impressed voltage is 0.8V
2-cathode area is 0.22A/m during 0.65V
2-cathode area, lower than mixed bacterium, what wherein Another reason was that electrode uses is plane graphite, but not graphite felt.Bright sulfur reduction ground bacillus cannot be used for the processing of actual waste water.In the same year, the people such as Villano utilize and have a liking for H
2dehalogenation bacterium is cooked the product H of negative electrode
2also obtained success, but productive rate is very low.2012 Nian Gai study group are by improving, at cathode potential-0.900V(vs SHE) under, current density is brought up to 3A/m
2, produce H
2speed is 0.2m
3h
2/ m
3.Negative electrode under the catalysis of dehalogenation bacterium produces H
2electromotive force is lower is its shortcoming.In addition, the domestication of dehalogenation bacterium makes application become complicated.
Produce H
2the inoculation of biological-cathode and startup are that MECs produces H
2the element task of research and operation.Because electronics product H is accepted in the under anaerobic direct enrichment of negative electrode
2microorganism is very difficult, and researchist starts to note producing H
2the Study on rapid start-up of biological-cathode MECs.For accelerating to produce H
2the startup of biological-cathode MECs, the people such as Jeremiasse adopt interpolation sodium acetate to accelerate the startup strategy of biological-cathode MECs, have received good effect.But maximum current density is only 1A/m
2, result is than before less than normal, and start time is still longer.The people such as Pisciotta in 2012 do and produce H with the appositional pattern MFC anode reversion of enrichment
2biological-cathode has also been obtained success.This method starts very fast, and simple, but current density is lower, H
2productive rate is also very low.In the end of the year 2012, the people such as Elsemiek Croese are from producing H
2on biological-cathode, isolated new pure bacterium Citrobacter strain PS2 catalytic cathode is produced H
2, take the graphite felt of 2.5mm as electrode cathode electromotive force, be-0.7V(vs SHE) time, current density reaches 2.2-2.3 A m
-2(produce H
2speed is 2.2-2.8 m
3h
2m
-3d
-1) 2013 years, patent (publication number CN103290425A) discloses product hydrogen microorganism electrolysis cell and the biological-cathode acclimation method thereof of people's acclimation methods such as a kind of similar Pisciotta, but open inquiry has no maximum current density or produces H
2the report of speed aspect.2013, Christopher W. Marshall etc. utilized in the process of biological-cathode electrosynthesis acetic acid and finds, biological-cathode can catalysis produce H
2, but productive rate is lower, is only 0.2 g L
1d 1.
Therefore, prior art needs further improve and develop.
Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of biological-cathode single chamber membraneless microbiological electrolyzer, reduces the construction cost of microorganism electrolysis cell, realizes low cost rapid build and the operation of full bioelectrode microorganism electrolysis cell.
The technical solution of the utility model is as follows:
A kind of biological-cathode single chamber membraneless microbiological electrolyzer, it comprises that single chamber is without film reaction chamber, it is characterized in that, described single chamber is without being provided with water-in and water outlet in membrane reactor, between described water-in and described water outlet, be provided with a baffle plate, on described water-in, edge is a little more than the lower edge of described baffle plate, described baffle plate one side is provided with electrolytic anode, opposite side is provided with electrolysis cathode, between described electrolysis cathode and described baffle plate, be provided with a sex change electrode, described electrolytic anode, described electrolysis cathode are all connected with a DC power supply circuit with described sex change electrode; The area of described electrolytic anode, described sex change electrode and described electrolysis cathode increases successively.
Described biological-cathode single chamber membraneless microbiological electrolyzer, wherein, described electrolytic anode is connected with described DC power supply circuit by the first circuit with described electrolysis cathode, between described electrolytic anode and described electrolysis cathode, be provided with second circuit, described sex change electrode is connected with described DC power supply circuit by described second circuit, on described second circuit, be provided with the first switch and second switch, described sex change electrode is connected between described the first switch and described second switch, and the junction of described electrolysis cathode and described second circuit is provided with the 3rd switch.
Described biological-cathode single chamber membraneless microbiological electrolyzer, wherein, described single chamber is without being provided with the first air outlet and the second air outlet on film reaction chamber, described the first air outlet is arranged on described electrolytic anode one side, and described the second air outlet is arranged on described electrolysis cathode one side.
Described biological-cathode single chamber membraneless microbiological electrolyzer, wherein, described water outlet is provided with barrier plate, and described single chamber is provided with mud extraction without the below of film reaction chamber.
The utility model provides a kind of biological-cathode single chamber membraneless microbiological electrolyzer, adopts the frame mode of electrolytic anode, electrolysis cathode and sex change electrode, makes the current density of biological-cathode electrolyzer can reach 4.5A/m after optimization
2more than-negative electrode shadow area, be obviously better than the method for prior art, realized low cost rapid build and the operation of full bioelectrode microorganism electrolysis cell.
Accompanying drawing explanation
Fig. 1 is the structural representation of biological-cathode single chamber membraneless microbiological electrolyzer in the present invention.
Embodiment
The utility model provides a kind of biological-cathode single chamber membraneless microbiological electrolyzer, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of biological-cathode single chamber membraneless microbiological electrolyzer, as shown in Figure 1, it comprises that single chamber is without film reaction chamber 1, and described single chamber is without being provided with water-in 2 and water outlet 3 in membrane reactor 1, between described water-in 2 and described water outlet 3, be provided with a baffle plate 4, on described water-in 2, edge is a little more than the lower edge of described baffle plate 4, described baffle plate 4 one sides are provided with electrolytic anode 5, opposite side is provided with electrolysis cathode 6, between described electrolysis cathode 6 and described baffle plate 4, be provided with a sex change electrode 7, described electrolytic anode 5, described electrolysis cathode 6 is all connected with direct supply 8 circuit with described sex change electrode 7, described electrolytic anode 5, described sex change electrode 7 increases successively with the area of described electrolysis cathode 6.
In another preferred embodiment of the present utility model, described electrolytic anode 5 is connected with described direct supply 8 circuit by the first circuit 9 with described electrolysis cathode 6, between described electrolytic anode 5 and described electrolysis cathode 6, be provided with second circuit 10, described sex change electrode 7 is connected with described direct supply 8 circuit by described second circuit 10, on described second circuit 10, be provided with the first switch 11 and second switch 12, described sex change electrode 7 is connected between described the first switch 11 and described second switch 12, and described electrolysis cathode 6 is provided with the 3rd switch 16 with the junction of described second circuit 10.
Further, described single chamber is without being provided with the first air outlet 13 and the second air outlet 14 on film reaction chamber 1, described the first air outlet 13 is arranged on described electrolytic anode 5 one sides, described the second air outlet 14 is arranged on described electrolysis cathode 6 one sides, can discharge the gases such as carbonic acid gas by described the first air outlet 13, by the second air outlet 14, discharge the gases such as hydrogen.And described water outlet 3 is provided with barrier plate 15, and described single chamber is provided with mud mouth 17 without the below of film reaction chamber 1.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or convert, all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (4)
1. a biological-cathode single chamber membraneless microbiological electrolyzer, it comprises that single chamber is without film reaction chamber, it is characterized in that, described single chamber is without being provided with water-in and water outlet in membrane reactor, between described water-in and described water outlet, be provided with a baffle plate, on described water-in, edge is a little more than the lower edge of described baffle plate, described baffle plate one side is provided with electrolytic anode, opposite side is provided with electrolysis cathode, between described electrolysis cathode and described baffle plate, be provided with a sex change electrode, described electrolytic anode, described electrolysis cathode are all connected with a DC power supply circuit with described sex change electrode; The area of described electrolytic anode, described sex change electrode and described electrolysis cathode increases successively.
2. biological-cathode single chamber membraneless microbiological electrolyzer according to claim 1, it is characterized in that, described electrolytic anode is connected with described DC power supply circuit by the first circuit with described electrolysis cathode, between described electrolytic anode and described electrolysis cathode, be provided with second circuit, described sex change electrode is connected with described DC power supply circuit by described second circuit, on described second circuit, be provided with the first switch and second switch, described sex change electrode is connected between described the first switch and described second switch, the junction of described electrolysis cathode and described second circuit is provided with the 3rd switch.
3. biological-cathode single chamber membraneless microbiological electrolyzer according to claim 1, it is characterized in that, described single chamber is without being provided with the first air outlet and the second air outlet on film reaction chamber, described the first air outlet is arranged on described electrolytic anode one side, and described the second air outlet is arranged on described electrolysis cathode one side.
4. biological-cathode single chamber membraneless microbiological electrolyzer according to claim 1, is characterized in that, described water outlet is provided with barrier plate, and described single chamber is provided with mud mouth without the below of film reaction chamber.
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|---|---|---|---|
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| CN201320576075.5U CN203545779U (en) | 2013-09-17 | 2013-09-17 | Biological cathode single-chamber membrane-less microorganism electrolytic tank |
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| CN203545779U true CN203545779U (en) | 2014-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048647A (en) * | 2016-07-01 | 2016-10-26 | 吉林建筑大学 | Variable-polarity biological electrode microorganism electrolytic tank and running method thereof |
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2013
- 2013-09-17 CN CN201320576075.5U patent/CN203545779U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048647A (en) * | 2016-07-01 | 2016-10-26 | 吉林建筑大学 | Variable-polarity biological electrode microorganism electrolytic tank and running method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140917 |
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| EXPY | Termination of patent right or utility model |