CN107130003A - A kind of method that utilization carbon material improves synthesis gas anaerobic fermentation effect - Google Patents
A kind of method that utilization carbon material improves synthesis gas anaerobic fermentation effect Download PDFInfo
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- CN107130003A CN107130003A CN201710480367.1A CN201710480367A CN107130003A CN 107130003 A CN107130003 A CN 107130003A CN 201710480367 A CN201710480367 A CN 201710480367A CN 107130003 A CN107130003 A CN 107130003A
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- synthesis gas
- carbon material
- anaerobic fermentation
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The present invention relates to a kind of method that utilization carbon material promotes synthesis gas anaerobic fermentation, comprise the following steps：(1) carbon material is added in using anaerobic sludge as the anaerobic reactor for starting microbial inoculum；(2) using synthesis gas as carbon source, anaerobic fermentation is carried out with the mode of aeration.Compared with prior art, present invention carbon material shortens synthesis gas anaerobic fermentation and starts the time as thing is added, and has been obviously improved carbon monoxide degradation rate and methane produces speed.This method is simple to operate, and device is simple.With synthesis gas and carbon material carbon source and additive respectively as microbiological anaerobic fermentation process, it is possible to achieve the biorefining of waste and high-valued.
Description
Technical field
The invention belongs to environmental protection and technical field of resource comprehensive utilization, improved more particularly, to one kind using carbon material
The method of synthesis gas anaerobic fermentation effect.
Background technology
Lignocellulose biomass raw material (such as stalk and wood) is difficult directly to be degraded and changed into by microorganism biological original
Material.If directly burning, while efficiency of combustion is low, large quantity of air pollutant can be also formed, and is by their gasifications or pyrolysis
Synthesis gas is to realize one of effective processing mode of its recycling energy.Synthesis gas is used directly for as Industrial Boiler, combustion
Gas-turbine or fuel cell powers, can also be further converted into aldehyde, alcohol, acids, high-purity by chemistry or biotechnology
The products such as unstripped gas (such as methane, hydrogen).By lignocellulose biomass material gasification or pyrolysis for synthesis gas chemical technology
It is very ripe, but usually require to carry out under high-temperature and high-pressure conditions, in addition it is also necessary to constant CO/H2Ratio, when being mixed with other impurities
Product quality can be caused to be deteriorated【Klasson K T,M.D.Ackerson,Clausen E C,et al.1991.Bioreactor
design for synthesis gas fermentations.Fuel 70(5):605-614.】；And compared to chemical technology,
These problems can be avoided using open Mixed Microbes anaerobic fermentation technology, its cost is low and is easier to make it more the characteristics of acquisition
Has actual application value【Guiot S R,Cimpoia R,Carayon G.Potential of wastewater-treating
anaerobic granules for biomethanation of synthesis gas.2011.Environmental
Science&Technology 45(5):2006-12.】。
Carbon monoxide accounting 10%-100% in synthesis gas.The domestication of carbon monoxide auxotype anaerobe and propagation are logical
Often need startup time for growing very much, and carbon monoxide the genotoxic potential of microorganism can also be influenceed function bacterium metabolic process and
With the cooperation of other microorganisms【Sancho N S,Cimpoia R,Bruant G,et al.Biomethanation of
syngas using anaerobic sludge:Shift in the catabolic routes with the CO
partial pressure increase[J].Frontiers in Microbiology,2016,7(147).】When these one
Carbonoxide auxotype anaerobe can not degrade in time carbon monoxide when, the unstable of anaerobic fermentation system can be caused
【Mohammadi M,Najafpour G D,Younesi H,et al.Bioconversion of synthesis gas to
second generation biofuels:A review[J].Renewable&Sustainable Energy Reviews,
2011,15(9):4255-4273.】.Therefore, to solve the above problems, needing the metabolic capability of enhancement microbiological and an anti-oxidation
The ability that carbon suppresses.
Scientific and technical article【Sancho N S,Cimpoia R,Bruant G,et al.Biomethanation of Syngas
using anaerobic sludge:Shift in the catabolic routes with the CO partial
pressure increase[J].Frontiers in Microbiology,2016,7(147).】Report：By existing for a long time
Anaerobic sludge is tamed under the atmosphere of 1atm carbon monoxide pressure of tension so that microorganism utilizes carbon monoxide ability and production first in sludge
Alkane ability, which has, to be obviously improved.
The content of the invention
Based on above-mentioned background, the present invention, which proposes a kind of utilization carbon material, improves the method for synthesis gas anaerobic fermentation effect.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of method that utilization carbon material improves synthesis gas anaerobic fermentation effect, comprises the following steps：
(1) carbon material is added in using anaerobic sludge as the anaerobic reactor for starting microbial inoculum；
(2) using synthesis gas as carbon source, anaerobic fermentation is carried out with the mode of aeration.
Described carbon material can be pyrolyzed or be gasified by debirs and produced, and can be also processed further being made according to its product,
Including charcoal, activated carbon etc..
Described carbon material particle diameter<150 microns, specific surface area is not less than 100m2/ g or soda acid functional group content be not low
In 3mmol/g.
Volumetric filling ratio of the described carbon material in anaerobic reactor is less than 1%.
Described carbon material is with being 0.8 as the anaerobic sludge VS mass ratioes of microbial inoculum are started:1-1.2:1.
The anaerobic reactor operational factor is：Reaction temperature is 30-40 DEG C, pH 6.5-7.8, and gas backstreaming rate is
90%-100%, the higher the better.
Described synthesis gas is configured to by a certain percentage by carbon monoxide and other gases, carbon monoxide volume in synthesis gas
Accounting is in 10%-100%.
Described synthesis gas is that lignocellulose biomass raw material is rich in carbon monoxide through what pyrolysis or gasification were produced
Synthesis gas.
Compared with prior art, the invention has the advantages that and effect：
1st, the larger characteristic of the porous and specific surface area of carbon material can be provided for microbe survival attachment site and compared with
Large space, improves the growth, development and metabolism of microorganism.They also containing abundant functional group, can adjust the liquid of material peripheral
Phase environment.In addition they are all conductive materials, can promote electron transmission, accelerate the degraded of material, so as to be favorably improved micro-
The ability of biological anti-suppression.
2nd, the reactor start-up time that with the addition of carbon material shortens, and carbon monoxide degradation rate and methane produce speed and is able to
It is substantially improved, synthesis gas anaerobic fermentation effect is improved.
3rd, lignocellulose biomass raw material (such as wood, stalk) can be produced rich in carbon monoxide through pyrolysis or gasification
Synthesis gas, the carbon material such as charcoal and activated carbon can also produce by pyrolytic process.With synthesis gas and carbon material respectively as
The carbon source and additive of microbiological anaerobic fermentation process, it is possible to achieve the biorefining of waste and high-valued.
Brief description of the drawings
Fig. 1 is the structural representation of closure up-flow anaerobic reactor in the present invention.
Each label is as follows in figure：1- air inlets；2- aeration heads；3- microorganisms；4- acid solution tanks；5- alkali liquid tanks；6- anaerobism is anti-
Answer device；7- circulating pumps；8- delivery pumps；9- bubbles；10- gas outlets；11-pH control systems；12- airbags；13- escape pipes.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The present embodiment use anaerobic reactor structure as described in Figure 1, for closure up-flow anaerobic reactor.Anaerobic reaction
The bottom of device 6 is provided with air inlet 1, sets aeration head 2 in the top of air inlet 1, microorganism 3 is filled with inside anaerobic reactor 6,
The top of anaerobic reactor 6 is provided with gas outlet 10, and the airbag 12 of filling synthesis gas is externally provided with anaerobic reactor 6, and airbag 12 passes through
Air inlet pipe is connected with air inlet 1, and circulating pump 7 is provided with air inlet pipe, and return duct and escape pipe 13, backflow are drawn from gas outlet 10
Pipe is connected with airbag 12, and escape pipe 13 is passed directly into air.
Synthesis gas is by the formation numerous air-bubble 9 of aeration head 2 after the entrance of air inlet 1, and bubble 9 can be by microorganism 3, to close
Into gas as carbon source, anaerobic fermentation is carried out with the mode of aeration.
Acid solution tank 4 and alkali liquid tank 5 are externally provided with anaerobic reactor 6, acid solution tank 4 is supplemented with acid ＆ alkali liquid simultaneously with alkali liquid tank 5
Pipe is connected, and acid ＆ alkali liquid supplement pipe is extend into anaerobic reactor 6, delivery pump 8 is provided with acid ＆ alkali liquid supplement pipe, in anaerobic reaction
PH control systems 11 are provided with device 6, control acid solution tank 4 to be added to alkali liquid tank 5 in anaerobic reactor by pH control systems 11
Amount, and then control anaerobic reactor 6 in pH scopes.
The method that the present embodiment improves synthesis gas anaerobic fermentation effect using carbon material, step is as follows：
(1) it is that 60g, its TS and VS are respectively 12% He to take anaerobic activated sludge as microbial inoculum, sludge dosage is started
73%.1 to 1 is approximately equal to by sludge VS mass and charcoal mass ratio, 5 grams of charcoal is added, charcoal particle diameter is 75-150
Micron, its soda acid functional group content is 4.6mmol/g.
(2) volumetric filling ratio of the charcoal in anaerobic reactor is 0.7%.
(3) such as Fig. 1, in closure up-flow anaerobic reactor, synthesis gas is pumped into anaerobic reaction from airbag by circulating pump
Device, is finally back in same airbag, and reflux ratio is 100%, and the content of carbon monoxide in the reactor is passed successively in synthesis gas
Increase, the present embodiment considers four states that carbon monoxide pressure of tension is respectively 0.07atm, 0.21atm, 0.41atm, 0.69atm；
(4) anaerobic reactor uses temperature in temperature control device maintenance reaction device for 35 DEG C, to remain anti-using pH control systems
It is 6.5-7.8 to answer pH in device.
Using method processed as described above, when carbon monoxide initial partial pressure is 0.21atm, carbon monoxide degradation rate is most
Height can improve 149%, and methane, which produces speed highest, can improve 49%；When carbon monoxide initial partial pressure is 0.41atm, carbon monoxide
Degradation rate highest can improve 57%, and methane, which produces speed highest, can improve 238%.Fermentation starting time advance 40%.
Embodiment 2
The method that the present embodiment improves synthesis gas anaerobic fermentation effect using carbon material, step is as follows：
(1) it is that 60g, its TS and VS are respectively 12% He to take anaerobic grain sludge as microbial inoculum, sludge dosage is started
73%.By sludge VS mass：Quality of activated carbon is approximately equal to 1：1 adds 5 grams of activated carbon.Activated carbon particle size is 75-150 microns,
Specific surface area is 644m2/g。
(2) volumetric filling ratio of the activated carbon in anaerobic reactor is 0.7%.
(3) such as Fig. 1, in closure up-flow anaerobic reactor, synthesis gas is pumped into reactor from airbag by circulating pump, most
It is back to eventually in same airbag, reflux ratio is 100%, the gas in airbag is changed once for two days, and carbon monoxide is anti-in synthesis gas
Answer the content in device incremented by successively, the present embodiment consider carbon monoxide pressure of tension be respectively 0.07atm, 0.21atm, 0.41atm,
0.69atm four states；
(4) anaerobic reactor uses temperature in temperature control device maintenance reaction device for 35 DEG C, to remain anti-using pH control systems
It is 6.5-7.8 to answer pH in device.
Using method processed as described above, when carbon monoxide initial partial pressure is 0.21atm, carbon monoxide degradation rate is most
Height can improve 193%, and methane, which produces speed highest, can improve 45%；When carbon monoxide initial partial pressure is 0.41atm, carbon monoxide
Degradation rate highest can improve 60%, and methane, which produces speed highest, can improve 186%.Fermentation starting time advance 20%.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's
Within protection domain.
Claims (8)
1. a kind of method that utilization carbon material improves synthesis gas anaerobic fermentation effect, it is characterised in that comprise the following steps：
(1) carbon material is added in using anaerobic sludge as the anaerobic reactor for starting microbial inoculum；
(2) using synthesis gas as carbon source, anaerobic fermentation is carried out with the mode of aeration.
2. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In described carbon material includes charcoal, activated carbon.
3. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In described carbon material particle diameter<150 microns, specific surface area is not less than 100m2/ g or soda acid functional group content are not less than
3mmol/g。
4. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In the volumetric filling ratio of described carbon material in anaerobic reactor is less than 1%.
5. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In described carbon material is with being 0.8 as the anaerobic sludge VS mass ratioes of microbial inoculum are started:1-1.2:1.
6. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In the anaerobic reactor operational factor is：Reaction temperature is 30-40 DEG C, pH 6.5-7.8, and gas backstreaming rate is 90%-
100%.
7. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In carbon monoxide volume accounting is in 10%-100% in described synthesis gas.
8. a kind of utilization carbon material according to claim 1 improves the method for synthesis gas anaerobic fermentation effect, its feature exists
In the synthesis rich in carbon monoxide that described synthesis gas produces for lignocellulose biomass raw material through pyrolysis or gasification
Gas.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029135A (en) * | 2019-03-27 | 2019-07-19 | 农业部沼气科学研究所 | A method of improving fermentation of ligno-cellulose hydrolysate rate |
| CN111977886A (en) * | 2019-05-21 | 2020-11-24 | 中国科学院过程工程研究所 | Chemical-biological combined treatment system and treatment method for high-fluorine high-COD wastewater |
| CN112680327A (en) * | 2021-02-03 | 2021-04-20 | 中国天楹股份有限公司 | Efficient anaerobic digestion treatment system and method for organic wastes |
| CN114315075A (en) * | 2021-12-23 | 2022-04-12 | 海南大学 | Method for improving methane production performance of pig manure based on biogas cycle coupling activated carbon |
| CN116102224A (en) * | 2022-11-21 | 2023-05-12 | 青岛君康洁净科技有限公司 | Method for strengthening anaerobic digestion of sludge based on micro-aeration coupling conductive material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029135A (en) * | 2019-03-27 | 2019-07-19 | 农业部沼气科学研究所 | A method of improving fermentation of ligno-cellulose hydrolysate rate |
| CN111977886A (en) * | 2019-05-21 | 2020-11-24 | 中国科学院过程工程研究所 | Chemical-biological combined treatment system and treatment method for high-fluorine high-COD wastewater |
| CN112680327A (en) * | 2021-02-03 | 2021-04-20 | 中国天楹股份有限公司 | Efficient anaerobic digestion treatment system and method for organic wastes |
| CN112680327B (en) * | 2021-02-03 | 2023-10-13 | 中国天楹股份有限公司 | Organic waste anaerobic digestion efficient treatment system and treatment method thereof |
| CN114315075A (en) * | 2021-12-23 | 2022-04-12 | 海南大学 | Method for improving methane production performance of pig manure based on biogas cycle coupling activated carbon |
| CN116102224A (en) * | 2022-11-21 | 2023-05-12 | 青岛君康洁净科技有限公司 | Method for strengthening anaerobic digestion of sludge based on micro-aeration coupling conductive material |
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