CN109912154A - A kind of microorganism electrolysis cell highly effective hydrogen yield and the method for inhibiting methane phase - Google Patents
A kind of microorganism electrolysis cell highly effective hydrogen yield and the method for inhibiting methane phase Download PDFInfo
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- CN109912154A CN109912154A CN201910207296.7A CN201910207296A CN109912154A CN 109912154 A CN109912154 A CN 109912154A CN 201910207296 A CN201910207296 A CN 201910207296A CN 109912154 A CN109912154 A CN 109912154A
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Abstract
The invention discloses a kind of microorganism electrolysis cell highly effective hydrogen yield and inhibit the method for methane phase, belongs to water-treatment technology field, specific steps are as follows: be put into reactor after pre-processing to sludge；Appropriate potassium ferrate is added according to sludge VSS concentration and adjusts pH with sodium hydrate aqueous solution；After placing a period of time, the sludge after dissolution large amount of organic is added in single-chamber microbial electrolytic cell reactor as substrate, carries out subsequent microorganism electrolysis cell and produce hydrogen reaction.By the microorganism electrolysis cell highly effective hydrogen yield of the invention using sludge substrate and the method for methane phase is inhibited to be applied to during microorganism electrolysis cell sludge production hydrogen.In addition to starting the period, 10 periods are run with four days each cycles, the rate for producing hydrogen is 0.095L/Ld, hydrogen content 73.4%, methane content 0.2%.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to a kind of microorganism electrolysis cell highly effective hydrogen yield and inhibits to produce first
The method of alkane.
Background technique
So far, hydrogen cannot function as traditional energy and equally directly acquire to obtain, and be gone out in the form of energy carrier
It is existing.Hydrogen all play the role of in social development and human lives it is extremely important, the whole world to its demand with annual 5~
10% speed increases.And the sustainability source of hydrogen or an important topic, approximately half of hydrogen is from natural
Gas, remaining hydrogen are mainly derived from petroleum, coal and electrolysis water.Hydrogen is unsustainable sexual development from fossil fuel
, if not changing the approach of existing hydrogen manufacturing, the mankind will face the harsh conditions of Hydrogen Energy exhaustion very serious.Nowadays, it utilizes
Biomass hydrogen making is more feasible renewable sustainability hydrogen production process.The method of traditional biological hydrogen production is mainly needle
To using water or various biomass as substrate, the process of hydrogen molecule is generated under the catalytic dehydrogenation of microorganism.Wherein, photodissociation
The method of water hydrogen manufacturing and ferment for hydrogen production as core.Primary limitation is that the hydrogen conversion ratio of substrate is low, fermentation is incomplete.
Microorganism electrolysis cell technology has continued to develop since the birth, as a kind of emerging bio-hydrogen production method.Not only may be used
Effectively to handle waste, and generate hydrogen energy source.Currently, be applied to there are many substrates of microorganism electrolysis cell, wherein
Including organic acid, glucose and sanitary sewage etc..Sludge includes a large amount of as the intermediate product of sewage treatment plant's processing sewage
Organic matter, while as a kind of waste needs be removed.It is also more and more using the microorganism electrolysis cell that sludge is matrix
Scholar it is of interest.When producing hydrogen using sludge, since there are a large amount of methane phase archaeals in sludge, to be run in reactor
Always start largely to obtain methane after a period of time, and the higher hydrogen of purity cannot be obtained.
Summary of the invention
The purpose of the present invention is to solve existing microorganism electrolysis cells using sludge as volume production big when substrate production hydrogen
Raw methane and the problem of the hydrogen of high-purity cannot be obtained, and a kind of microorganism electrolysis cell highly effective hydrogen yield is provided and inhibits to produce first
The method of alkane.
Microorganism electrolysis cell of the invention inhibit methane phase method be added simultaneously into sludge substrate potassium ferrate and
Sodium hydroxide solution, the potassium ferrate concentration added are 1.0g/g VSS sludge, and sodium hydroxide dosage is to utilize 4M hydroxide
Sludge pH is adjusted to 11.5 by sodium water solution.The generation of methane can effectively be inhibited during sludge anaerobic fermentation.
It is provided by the invention using the microorganism electrolysis cell highly effective hydrogen yield that sludge is substrate and to inhibit the method for methane phase
It follows these steps to realize:
One, reactor is put into after pre-processing to sludge；
Two, the VSS concentration of sludge is measured；
Three, appropriate potassium ferrate is taken according to VSS concentration；
Four, certain density sodium hydrate aqueous solution is taken；
Five, above-mentioned potassium ferrate is added in reactor, conditioning of mud pH in reactor is added in sodium hydrate aqueous solution
Value；
Six, after placing a period of time, single-chamber microbial electricity is added to using the sludge after dissolution large amount of organic as substrate
It solves in the reactor of pond, carries out subsequent microorganism electrolysis cell and produce hydrogen reaction.
Sludge described in step 1 is the secondary settling tank sludge obtained from sewage treatment plant.
It is pre-processed described in step 1 are as follows: by sludge settling 24 hours, remove supernatant.
The method that the VSS concentration of sludge is measured described in step 2 is National Standard Method.
The amount of potassium ferrate described in step 3 is the potassium ferrate that 1.0g/g VSS is taken according to sludge VSS concentration.
Sodium hydrate aqueous solution concentration described in step 4 is 4M.
Conditioning of mud pH value described in step 5 adjusts pH value to 11.5.
Standing time described in step 6 is 30-45 minutes.
Single-chamber microbial electrolytic cell reactor described in step 6 kind is the conventional reactor of volume 28mL, and cathode is platinum carbon
Cathode, anode are carbon brush anode, and external resistance is 10 Ω.
Wherein potassium ferrate described described in step 3 is the prosperous prosperous Chemical Co., Ltd. in Tianjin, analyzes pure, step
Chemical reagent limited liability company in Nanjing described in rapid four analyzes pure.
Beneficial effect
By the microorganism electrolysis cell highly effective hydrogen yield of the invention using sludge substrate and inhibit the method application of methane phase
During producing hydrogen to microorganism electrolysis cell sludge.It is 8.67g/L in sludge concentration, while adds 30~45 after two kinds of chemical agents
It is put into microorganism electrolysis cell reactor after minute.In addition to starting the period, ran for 10 week with four days each cycles
Phase, the rate for producing hydrogen is 0.095L/Ld, hydrogen content 73.4%, methane content 0.2%.And untreated dirt
Mud starts largely to generate methane after microorganism electrolysis cell reactor has run 2 periods with the same terms and parameter, and hydrogen contains
Amount is less than 1%, and methane content reaches 68.4%.Concentration has been obtained during producing hydrogen as the microorganism electrolysis cell of substrate using sludge
Very high hydrogen, for hydrogen transport, purify and put into engineering production in provide huge convenience.
Specific embodiment
Specific embodiment 1: present embodiment inhibits to produce first during producing hydrogen using the microorganism electrolysis cell of sludge substrate
The method of alkane is to add potassium ferrate and sodium hydroxide solution into sludge substrate.The secondary settling tank that will be obtained from sewage treatment plant
Sludge is put into the reactor of anaerobic digestion after sedimentation in 24 hours after removing supernatant；VSS with National Standard Method measurement sludge is dense
Degree；The amount of the potassium ferrate of 1.0g/gVSS is weighed according to VSS concentration.Deploy the sodium hydroxide solution of 4M.Potassium ferrate is put
Enter in reactor, then sodium hydroxide solution is added in sludge, so that the pH value of sludge is adjusted to 11.5 using pH meter monitoring.To molten
The sludge after large amount of organic is added in microorganism electrolysis cell as substrate out starts hydrogen manufacturing.
Specific embodiment 2: the present embodiment is different from the first embodiment in that potassium ferrate concentration is 0.5g/g
VSS。
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that utilizing sludge concentration VSS
Different excess sludges are as substrate.
Embodiment one: the present embodiment utilizes the microorganism electrolysis cell highly effective hydrogen yield of sludge substrate and inhibits the side of methane phase
Method follows these steps to realize:
One, it after sedimentation in 24 hours, will be put into after removing supernatant from the secondary settling tank sludge obtained in sewage treatment plant
In the anaerobism silk mouth bottle of 500ml；
Two, the VSS concentration for measuring sludge, measuring sludge concentration is 8.67g/L；
Three, potassium ferrate 6.5g is weighed according to VSS concentration,.
Four, the sodium hydroxide solution 20ml of 4M is deployed.
Five, potassium ferrate is put into reactor, then sodium hydroxide solution is added in sludge, make dirt using pH meter monitoring
The pH value of mud is adjusted to 11.5.
Six, single-chamber microbial electrolytic cell reactor is assembled in advance, and cathode is platinum carbon cathode, and anode is carbon brush anode, outside
Resistance is 10 Ω.
Seven, large amount of organic dissolution (placing 30 minutes) is jelly then assert to sludge, using sludge at this time as substrate
Start to carry out microorganism electrolysis cell hydrogen manufacturing.In addition to starting the period, 10 periods have been run with four days each cycles, produce hydrogen
Rate be 0.095L/Ld, hydrogen content 73.4%, methane content 0.2%.
Embodiment two: the present embodiment utilizes the microorganism electrolysis cell highly effective hydrogen yield of sludge substrate and inhibits the side of methane phase
Method follows these steps to realize:
One, it after sedimentation in 24 hours, will be put into after removing supernatant from the secondary settling tank sludge obtained in sewage treatment plant
In the anaerobism silk mouth bottle of 500ml；
Two, the VSS concentration for measuring sludge, measuring sludge concentration is 8.67g/L；
Three, potassium ferrate 4.335g is weighed according to VSS concentration,.
Four, the sodium hydroxide solution 20ml of 4M is deployed.
Five, potassium ferrate is put into reactor, then sodium hydroxide solution is added in sludge, make dirt using pH meter monitoring
The pH value of mud is adjusted to 11.5.
Six, single-chamber microbial electrolytic cell reactor is assembled in advance, and cathode is platinum carbon cathode, and anode is carbon brush anode, outside
Resistance is 10 Ω.
Seven, large amount of organic dissolution (placing 30 minutes) is jelly then assert to sludge, using sludge at this time as substrate
Start to carry out microorganism electrolysis cell hydrogen manufacturing.
Embodiment three: the present embodiment utilizes the microorganism electrolysis cell highly effective hydrogen yield of sludge substrate and inhibits the side of methane phase
Method follows these steps to realize:
One, it after sedimentation in 24 hours, will be put into after removing supernatant from the secondary settling tank sludge obtained in sewage treatment plant
In the anaerobism silk mouth bottle of 500ml；
Two, the VSS concentration for measuring sludge, measuring sludge concentration is 9.11g/L；
Three, potassium ferrate 9.11g is weighed according to VSS concentration,.
Four, the sodium hydroxide solution 20ml of 4M is deployed.
Five, potassium ferrate is put into reactor, then sodium hydroxide solution is added in sludge, make dirt using pH meter monitoring
The pH value of mud is adjusted to 11.5.
Six, single-chamber microbial electrolytic cell reactor is assembled in advance, and cathode is platinum carbon cathode, and anode is carbon brush anode, outside
Resistance is 10 Ω.
Seven, large amount of organic dissolution (placing 45 minutes) is jelly then assert to sludge, using sludge at this time as substrate
Start to carry out microorganism electrolysis cell hydrogen manufacturing.
Comparative example one: the step of not adding medicament to sludge is as follows:
It one, will be from the secondary settling tank sludge obtained in sewage treatment plant after sedimentation in 24 hours, after removing supernatant directly
Put into hydrogen manufacturing in microorganism electrolysis cell.
Embodiment one is compared with comparative example one, is 8.67g/L in sludge concentration, while after adding two kinds of chemical agents
It is put into after 30~45 minutes in microorganism electrolysis cell reactor.In addition to starting the period, run with four days each cycles
In 10 periods, the rate for producing hydrogen is 0.095L/Ld, hydrogen content 73.4%, methane content 0.2%.And without place
The sludge of reason starts largely to generate methane after microorganism electrolysis cell reactor has run 2 periods, hydrogen content less than 1%,
And methane content reaches 68.4%.Dense hydrogen has been obtained during producing hydrogen as the microorganism electrolysis cell of substrate using sludge
Gas, for hydrogen transport, purify and put into engineering production in provide huge convenience.In addition, embodiment two is except starting
Outside period, 10 periods are run with four days each cycles, the rate for producing hydrogen is 0.085L/Ld, and hydrogen content is
63.4%, methane content 0.2%；Embodiment three ran for 10 week with four days each cycles in addition to starting the period
Phase, the rate for producing hydrogen is 0.089L/Ld, hydrogen content 69.4%, methane content 0.3%.
Claims (9)
1. a kind of microorganism electrolysis cell highly effective hydrogen yield and the method for inhibiting methane phase, it is characterised in that: the following steps are included:
One, reactor is put into after pre-processing to sludge；
Two, the VSS concentration of sludge is measured；
Three, appropriate potassium ferrate is taken according to VSS concentration；
Four, certain density sodium hydrate aqueous solution is taken；
Five, above-mentioned potassium ferrate is added in reactor, conditioning of mud pH value in reactor is added in sodium hydrate aqueous solution；
Six, after placing a period of time, the sludge after dissolution large amount of organic is added to single-chamber microbial electrolytic cell as substrate
In reactor, carries out subsequent microorganism electrolysis cell and produce hydrogen reaction.
2. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
Sludge described in step 1 is the secondary settling tank sludge obtained from sewage treatment plant.
3. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
It is pre-processed described in step 1 are as follows: by sludge settling 24 hours, remove supernatant.
4. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
The method that the VSS concentration of sludge is measured described in step 2 is National Standard Method.
5. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
The amount of potassium ferrate described in step 3 is the potassium ferrate that 1.0g/g VSS is taken according to sludge VSS concentration.
6. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
Sodium hydrate aqueous solution concentration described in step 4 is 4M.
7. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
Conditioning of mud pH value described in step 5 adjusts pH value to 11.5.
8. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
Standing time described in step 6 is 30-45 minutes.
9. microorganism electrolysis cell highly effective hydrogen yield according to claim 1 and the method for inhibiting methane phase, it is characterised in that:
Single-chamber microbial electrolytic cell reactor described in step 6 kind is the conventional reactor of volume 28mL, and cathode is platinum carbon cathode, sun
Extremely carbon brush anode, external resistance are 10 Ω.
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Cited By (3)
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| CN110511963A (en) * | 2019-08-21 | 2019-11-29 | 河海大学 | The method that advanced oxidation processes and the combination of bioelectrochemistry method promote excess sludge to produce hydrogen |
| CN111518843A (en) * | 2020-04-30 | 2020-08-11 | 同济大学 | Anaerobic fermentation hydrogen production method and additive using excess sludge as raw material |
| CN114558417A (en) * | 2022-02-18 | 2022-05-31 | 湖南农业大学 | Method for reducing emission of greenhouse gas in rice field |
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| CN105567741A (en) * | 2016-01-15 | 2016-05-11 | 复旦大学 | Method for improving excess activated sludge anaerobic fermentation hydrogen production efficiency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511963A (en) * | 2019-08-21 | 2019-11-29 | 河海大学 | The method that advanced oxidation processes and the combination of bioelectrochemistry method promote excess sludge to produce hydrogen |
| CN111518843A (en) * | 2020-04-30 | 2020-08-11 | 同济大学 | Anaerobic fermentation hydrogen production method and additive using excess sludge as raw material |
| CN114558417A (en) * | 2022-02-18 | 2022-05-31 | 湖南农业大学 | Method for reducing emission of greenhouse gas in rice field |
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