CN106082420B - A kind of automatic bias pollution control system of electricity-producing microorganism anode auxiliary hetero-junctions anode - Google Patents
A kind of automatic bias pollution control system of electricity-producing microorganism anode auxiliary hetero-junctions anode Download PDFInfo
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- 244000005700 microbiome Species 0.000 title claims abstract description 38
- 230000005611 electricity Effects 0.000 title claims abstract description 35
- 239000004065 semiconductor Substances 0.000 claims abstract description 48
- 230000003197 catalytic effect Effects 0.000 claims abstract description 25
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 18
- 231100000719 pollutant Toxicity 0.000 claims abstract description 18
- 241000894006 Bacteria Species 0.000 claims abstract description 8
- 238000005286 illumination Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 6
- 239000002351 wastewater Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 5
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- 150000001875 compounds Chemical class 0.000 claims description 4
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005276 aerator Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- 230000002269 spontaneous effect Effects 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003213 activating effect Effects 0.000 abstract description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 abstract description 4
- 239000010937 tungsten Substances 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 3
- 239000010439 graphite Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 abstract 2
- 235000006506 Brasenia schreberi Nutrition 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000002105 nanoparticle Substances 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 17
- 238000006731 degradation reaction Methods 0.000 description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 229910002651 NO3 Inorganic materials 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 3
- 229940043267 rhodamine b Drugs 0.000 description 3
- 229910002915 BiVO4 Inorganic materials 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
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- 238000004043 dyeing Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N formic acid Substances OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical class O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- XEFQLINVKFYRCS-UHFFFAOYSA-N Triclosan Chemical compound OC1=CC(Cl)=CC=C1OC1=CC=C(Cl)C=C1Cl XEFQLINVKFYRCS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- YBHILYKTIRIUTE-UHFFFAOYSA-N berberine Chemical compound C1=C2CC[N+]3=CC4=C(OC)C(OC)=CC=C4C=C3C2=CC2=C1OCO2 YBHILYKTIRIUTE-UHFFFAOYSA-N 0.000 description 1
- 229940093265 berberine Drugs 0.000 description 1
- QISXPYZVZJBNDM-UHFFFAOYSA-N berberine Natural products COc1ccc2C=C3N(Cc2c1OC)C=Cc4cc5OCOc5cc34 QISXPYZVZJBNDM-UHFFFAOYSA-N 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
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- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- -1 has ion exchange Chemical compound 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229960003500 triclosan Drugs 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention provides the automatic bias pollution control systems that a kind of electricity-producing microorganism anode assists hetero-junctions anode, belong to low energy consumption technical field of waste water processing.Under conditions of without adding illumination with applied voltage outside, using the spontaneous generation electronics of semiconductor catalysis electrode hetero-junctions, activating oxygen generates free radicals, and is used for oxidizing anode organic pollution, and anode generates electronics and can also be conducted to cathode by external circuit, goes back parent pollutant；Meanwhile microorganism anode generates electronics and is conducted to cathode by external circuit, reinforces the reduction reaction of cathode inorganic pollution.TiO is loaded on carbon cloth2/g‑C3N4As anode 1, load electricity production bacterium graphite particle is as anode 2, and tungsten filament growth in situ tungsten trioxide nano particle is as catalytic cathode；The invention has the advantages that heterojunction semiconductor catalyticing anode, electricity-producing microorganism anode, three Room of semiconductor catalytic cathode simultaneously remove different pollutants, reach low energy consumption processing waste water target.
Description
Technical field
The invention belongs to waste water treatment technology of low energy consumption field, it is related to using automatic bias between heterojunction semiconductor catalysis electrode
Electronics flowing is generated, activating oxygen generates free radicals, and electricity-producing microorganism auxiliary provides electronics in semiconductor catalytic cathode, using urging
Polarizing electrode realizes the removal of three kinds of different pollutants from microorganism electrode simultaneously.
Background technology
With the rapid development of modern chemical industry, more and more artificial synthesis compounds enter human lives, in band
Also it is that environment brings huge negative effect while coming many convenient；Dyeing waste water is the typical generation of high pollution industrial wastewater
Table is the environomental pollution source that pollutant catabolic gene is paid close attention in the works.
Nitrate is a kind of pollutant being prevalent in natural environment, with the development of human civilization, underground water
Pollution of nitrate nitrogen oneself be generally existing in world wide an environmental problem；Excess free enthalpy nitrate can lead to cell and group
The breathing knitted is destroyed, after nitrate enters human body, it is also possible to is reduced to nitrite in internal organs, be made blood red egg in blood
It is white to lose oxygen carrying capacity, to cause anoxic to be poisoned.
Absorption, coagulation, chemical oxidation, electrochemical oxidation and bioanalysis etc. be all in treatment of dyeing wastewater research frequently with
Technique.The characteristic that nitric acid salt solubility is high, stability is good makes it sink with certain difficulty, traditional coagulation-in processing
Shallow lake-filtering handling technology of water supply is difficult to remove it；Currently, the technology of removal nitrate mainly has ion exchange, reverse osmosis, raw
Object method etc..There are respective advantage and disadvantage in above method, therefore need to design a kind of energy saving, efficiently sewage treatment process, real
It is removed while existing organic pollution is with inorganic pollution.
At present still without the unsolicited electronic transfer between research and utilization semiconductor catalyst hetero-junctions, activating oxygen generates freely
Base is used for oxidizing anode pollutant；Meanwhile anode generates electronics and can also be conducted by external circuit to cathode, restores cathode contamination
Object；Coupling electricity-producing microorganism anode generates electronics and is conducted to cathode by external circuit, and can reinforce cathode can go back going back for parent pollutant
Original reaction.
Invention content
The object of the present invention is to provide the automatic bias contamination control systems that a kind of electricity-producing microorganism anode assists hetero-junctions anode
System, solve without outside plus under conditions of illumination and voltage, degrade simultaneously under the conditions of low energy consumption variety classes pollutant the problem of.
Technical scheme of the present invention：
A kind of automatic bias pollution control system of electricity-producing microorganism anode auxiliary hetero-junctions anode, automatic bias pollutant drop
Solution system includes reactor, aerator and computer data acquisition system；The reactor passes through cation-exchange membrane point
For three Room, both sides are anode chamber, and centre is cathode chamber；Left side anode chamber is heterojunction semiconductor catalyticing anode, right side anode chamber
For electricity-producing microorganism anode, intermediate cathode chamber is semiconductor catalytic cathode；Three kinds of different types of polluted-waters are placed in three Room
It degrades simultaneously；It is quartz glass on the outside of left side anode chamber and intermediate cathode chamber；Left side anode chamber and intermediate cathode chamber bottom are equal
Aeration head is set, and left side anode chamber exposes air, and intermediate cathode chamber exposes nitrogen, and right side anode chamber maintains anaerobic conditions within；Semiconductor is different
Matter knot catalyticing anode and electricity-producing microorganism anode are connected with external resistance with catalytic cathode respectively, heterojunction semiconductor catalyticing anode with
The resistance value that external resistance is connected between catalytic cathode is more than the resistance value that external resistance is connected between electricity-producing microorganism anode and catalytic cathode, partly leads
Between bulk heterojunction catalyticing anode and catalytic cathode connect external resistance 1 resistance value be 300-1200 Ω, electricity-producing microorganism anode with urge
The resistance value of connection external resistance 2 is 1-100 Ω between change cathode；The voltage that contaminant degradation system generates passes through computer data acquiring
System acquisition.
The heterojunction semiconductor catalyticing anode is that two or three of conduction band and valence band location are loaded on conducting base
Different semiconductor catalysts, or semiconductor catalyst is compound with metallic atom, under conditions of without illumination is added with voltage outside,
Automatic bias generates electric current, such as TiO between heterojunction semiconductor catalyst2/g-C3N4、Cu2O2/TiO2、BiVO4/CdS、BiVO4/g-
C3N4/ Fe etc.；The semiconductor catalytic cathode is that there are the catalysis of the semiconductor of fermi level difference with heterojunction semiconductor anode
Agent, such as WO3、ZnO、SnO2Deng；The electricity-producing microorganism anode is the conducting base of load electricity production bacterium.
It is Recalcitrant chemicals waste water, such as rhodamine B, triclosan, berberine, right side in the left side anode chamber 1
The interior sanitary sewage containing sodium acetate, ammonium chloride etc. for for electricity production bacterium growth in anode chamber 2, interior intermediate cathode chamber is that can restore
Pollutant, such as nitrate nitrogen.
Electricity-producing microorganism anode assists the automatic bias pollutant control system operation of hetero-junctions anode：Without additional illumination or
Voltage, the more negative heterojunction semiconductor catalyticing anode of conduction band positions are placed in the anode chamber of left side, the semiconductor of valence band location corrigendum
Catalytic cathode is placed in intermediate cathode chamber, and electricity-producing microorganism anode is placed in the anode chamber of right side, and semiconductor is urged in the anode chamber of left side
Since life is reacted in the presence of interior bias, an electronics part for spontaneous generation with oxygen between polarizing electrode hetero-junctions and semiconductor cathode
At O2 -, another part conducted to cathode by external circuit reduce it is compound between hole and electronics pair, in cathode chamber of degrading
Parent pollutant can be gone back；Meanwhile h caused by semiconductor+With the H for being adsorbed on semiconductor surface2O or OH-Reaction generates OH,
OH and O2 -For strong oxidizer, the pollutant in oxidative degradation anode chamber；The hole of generation also has strong oxidizing property, can be direct
Aoxidize water pollutant；Electricity production bacterium in the anode chamber of right side generates electronics can also be transmitted to catalytic cathode by external circuit, improve
The above cathode can go back the degradation efficiency of parent pollutant；This electricity-producing microorganism anode assists the automatic bias pollutant drop of hetero-junctions anode
Solution system, three Room while three kinds of different type pollutants of degrading.
Beneficial effects of the present invention：Without additional illumination or voltage, the self power generation between semiconductor catalyst hetero-junctions is utilized
Son transfer generates oxidative free radical, and oxidizing anode pollutant is carried out at the same time with reduction cathode contamination object, while it is micro- to increase electricity production
Biological anode provides electronics to catalytic cathode, to improve cathode contamination object degradation efficiency.
Description of the drawings
Fig. 1 is a kind of automatic bias pollution control system figure of electricity-producing microorganism anode auxiliary hetero-junctions anode.
In figure：1 computer；2 cation-exchange membranes；3 heterojunction semiconductor catalyticing anodes；4 aeration heads；5 data collecting cards；
6 external resistances 1；7 external resistances 2；8 semiconductor catalytic cathodes；9 electricity-producing microorganism anodes；10 expose air；11 expose nitrogen.
Fig. 2 is that heterojunction semiconductor catalyticing anode generates map of current with electricity-producing microorganism anode itself.
In figure：Abscissa indicate the time, unit minute, ordinate indicate electric current, unit microampere, square represent three Room,
Unglazed, catalyticing anode, dot represent two Room, unglazed, catalyticing anode, and hollow triangle represents two Room, ultraviolet catalytic anode,
Black triangle represents three Room, unglazed, microorganism anode can be used for degradation of contaminant though the electric current of spontaneous generation is small.
Fig. 3 is heterojunction semiconductor catalyticing anode rhodamine B degradation efficiency chart.
In figure：Abscissa indicate the time, unit minute, ordinate indicate removal rate, wherein hollow triangle represent two Room,
Ultraviolet catalytic anode, black triangle represent three Room, unglazed, microorganism anode, and dot represents two Room, unglazed, catalyticing anode,
Under the conditions of having ultraviolet light, degradation rate is better than other two kinds of conditions, but increases the cost of additional illumination, and compared to two Room without
Striation part increases microorganism anode, while improving contaminant degradation rate, and reduces energy consumption, it may also be used for sanitary sewage
Degradation.
Fig. 4 is catalytic cathode degradation nitrate nitrogen efficiency chart.
In figure：Abscissa indicate the time, unit minute, ordinate indicate removal rate, wherein hollow triangle represent two Room,
Ultraviolet catalytic anode, black triangle represent three Room, unglazed, microorganism anode, and dot represents two Room, unglazed, catalyticing anode,
Under the conditions of having ultraviolet light, degradation rate is better than other two kinds of conditions.
Specific implementation mode
Describe the specific implementation mode of the present invention in detail below in conjunction with technical solution and attached drawing.
Embodiment 1
Heterojunction semiconductor catalyticing anode TiO2/g-C3N4It prepares：27ml butyl titanates are mixed with 23ml ethyl alcohol, magnetic force
Stir 30min；3.3ml HCl, 2.7ml deionized waters are added；Appropriate g-C is added3N4, stir evenly, immerse 20*5cm2Carbon fiber
Wei Bu, 105 DEG C of drying, repeatedly after 5 times, under the conditions of 450 DEG C, 5 DEG C of min-1, calcine 2h.
Semiconductor catalytic cathode WO3It is prepared by/W：Tungsten filament is impregnated 24 hours in ethanol solution, removes tungsten filament impurity
60 DEG C of drying afterwards, 500 DEG C of temperature lower calcinations 2 hours, tungsten filament becomes light yellow by black.
Electricity-producing microorganism anode：Graphite particle is inoculated with Shiva formula bacterium, and after one week of biofilm, reactor brings into operation.
Electricity-producing microorganism anode assists the automatic bias pollution control system operation of hetero-junctions anode：TiO2/g-C3N4As half
Conductor hetero-junctions catalyticing anode 1 is placed on the left of reactor, and the electricity-producing microorganism anode of inoculation Shiva formula bacterium graphite particle is placed in instead
It answers on the right side of device, WO3/ W cathodes are placed among reactor, such as Fig. 1；TiO2/g-C3N4Anode and WO3/ W cathodes pass through 1000 Ω dispatches from foreign news agency
Resistance is connected, and the big resistance of connection resistance value is the reason is that, so that TiO2/g-C3N4The electronics of spontaneous generation is mostly used in anode
It is oxygen activating, generate free radicals degradation anode organic matter；And microorganism anode and WO3/ W cathodes are connected by 1 Ω external resistances, more
Be conducive to the electron transmission of microorganism generation to cathodic reduction nitrate nitrogen.
Liquid is 300mL, 10mgL in anode chamber 1-1RhB, 0.05molL-1NaOH；Right side anode indoor liquid is
(mg L-1)CH3COONa (0.64), NH4Cl (0.057), CaCl2(0.0115), MgSO4(0.012), K2HPO4(0.012)；It is cloudy
Pole indoor liquid is 300mL 0.05mol L-1Formic acid, 100mg L-1NO3 --N；
Three Room are isolated by cation-exchange membrane, and being passed through air in anode chamber on the left of heterojunction semiconductor provides oxygen, uses
It is generated free radicals in electronic activation oxygen；It is passed through nitrogen in catalytic cathode room, removes the indoor electron acceptor oxygen of cathode so that
More electronics are for restoring nitrate nitrogen；It is tested under the conditions of following three kinds：Two Room, ultraviolet light the two poles of the earth, three Room, nothing
Light, catalyticing anode increase microorganism anode, two Room, unglazed, catalyticing anode, in the spontaneous generation Weak current of semiconductor as schemed
2, degradation of contaminant, as shown in figure 3, reacting four hours, the degradation rate of rhodamine B is respectively in the anode chamber of catalysis left side
87.93%, 79.33%, 73.19%；As shown in figure 3, reacting four hours, the degradation rate of cathode nitrate nitrogen is respectively 93.80%,
89.97%, 87.08%, the degradation of cathode nitrate nitrogen quickly, occurs mainly in preceding half an hour；Under the conditions of having ultraviolet light, drop
Solution rate is better than other two kinds of conditions, but increases the cost of additional illumination, and compares two Room no light conditions, increases microorganism sun
Pole while improving contaminant degradation rate, and reduces energy consumption, it may also be used for the degradation of sanitary sewage.
Claims (3)
1. a kind of automatic bias pollution control system of electricity-producing microorganism anode auxiliary hetero-junctions anode, which is characterized in that the self-bias
It includes reactor, aerator and computer data acquisition system to press pollution control system；The reactor passes through cation
Exchange membrane is divided into three Room, and both sides are anode chamber, and centre is cathode chamber；Left side anode chamber is heterojunction semiconductor catalyticing anode, right
Side anode chamber is electricity-producing microorganism anode, and intermediate cathode chamber is semiconductor catalytic cathode；Three kinds of different types of polluted-waters are set
It degrades simultaneously in three Room；It is quartz glass on the outside of left side anode chamber and intermediate cathode chamber；Left side anode chamber and intermediate cathode
Room bottom is respectively provided with aeration head, and left side anode chamber exposes air, and intermediate cathode chamber exposes nitrogen, and right side anode chamber maintains anaerobic conditions within；
Heterojunction semiconductor catalyticing anode and electricity-producing microorganism anode are connected with external resistance with semiconductor catalytic cathode respectively, and semiconductor is different
The resistance value that external resistance is connected between matter knot catalyticing anode and semiconductor catalytic cathode is more than electricity-producing microorganism anode and semiconductor catalysis
The resistance value of external resistance is connected between cathode, the resistance value that external resistance 1 is connected between heterojunction semiconductor catalyticing anode and catalytic cathode is
300-1200 Ω, the resistance value that external resistance 2 is connected between electricity-producing microorganism anode and semiconductor catalytic cathode are 1-100 Ω；Pollution control
The voltage that system processed generates is acquired by computer data acquisition system.
2. automatic bias pollution control system according to claim 1, which is characterized in that the heterojunction semiconductor catalysis
Anode is two or three of conduction band semiconductor catalyst different from valence band location to be loaded on conducting base, or semiconductor is urged
Agent is compound with metallic atom, and under conditions of without illumination is added with voltage outside, automatic bias generates between heterojunction semiconductor catalyst
Electric current；The semiconductor catalytic cathode is that there are the semiconductor catalysts of fermi level difference with heterojunction semiconductor anode；Institute
The electricity-producing microorganism anode stated is the conducting base of load electricity production bacterium.
3. automatic bias pollution control system according to claim 1 or 2, which is characterized in that in the left side anode chamber
It is the sanitary sewage for electricity production bacterium growth in the anode chamber of right side for Recalcitrant chemicals waste water, can to restore in intermediate cathode chamber
Pollutant.
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| CN110306203B (en) * | 2019-07-09 | 2021-08-06 | 郑州大学 | Electrochemical device and method for generating hydrogen peroxide at cathode and simultaneously carrying out anodic treatment on organic wastewater |
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| JP2012507828A (en) * | 2008-10-30 | 2012-03-29 | エメフシー リミテッド | Electrodes for use in bacterial fuel cells and bacterial electrolysis cells, and bacterial fuel cells and bacterial electrolysis cells using such electrodes |
| CN104617323A (en) * | 2015-01-28 | 2015-05-13 | 大连理工大学 | Non-photocatalytic and photocatalytic fuel cell system capable of generating power and degrading pollutants |
| CN105047977A (en) * | 2015-08-19 | 2015-11-11 | 浙江大学 | Photocatalytic and biological composite anode- and biological cathode-coupled fuel cell |
| CN105110554A (en) * | 2015-08-17 | 2015-12-02 | 大连理工大学 | System for removing nitrate nitrogen in water by virtue of coupling (optical) catalysis and MFC |
| CN105293688A (en) * | 2015-10-22 | 2016-02-03 | 大连理工大学 | System for removing nitrate nitrogen in water in electro-catalysis mode through coupling biology positive electrode |
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| JP2012507828A (en) * | 2008-10-30 | 2012-03-29 | エメフシー リミテッド | Electrodes for use in bacterial fuel cells and bacterial electrolysis cells, and bacterial fuel cells and bacterial electrolysis cells using such electrodes |
| CN104617323A (en) * | 2015-01-28 | 2015-05-13 | 大连理工大学 | Non-photocatalytic and photocatalytic fuel cell system capable of generating power and degrading pollutants |
| CN105110554A (en) * | 2015-08-17 | 2015-12-02 | 大连理工大学 | System for removing nitrate nitrogen in water by virtue of coupling (optical) catalysis and MFC |
| CN105047977A (en) * | 2015-08-19 | 2015-11-11 | 浙江大学 | Photocatalytic and biological composite anode- and biological cathode-coupled fuel cell |
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