CN108892428A - Bacterium is used for the cured application of flyash - Google Patents
Bacterium is used for the cured application of flyash Download PDFInfo
- Publication number
- CN108892428A CN108892428A CN201810947166.2A CN201810947166A CN108892428A CN 108892428 A CN108892428 A CN 108892428A CN 201810947166 A CN201810947166 A CN 201810947166A CN 108892428 A CN108892428 A CN 108892428A
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- Prior art keywords
- flyash
- bacterium
- bacterial
- poured
- conserved
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides bacteriums to be used for the cured application of flyash, and the bacterium is carbonate mineralized bacterium.A kind of flyash bacterial immobilisation material based on application of the invention, the preparation method of the material include：Bacterium, water and flyash are mixed, mixture is poured, solidified, conserved and to obtain flyash bacterial immobilisation material；The maintenance is to be conserved using the solution containing bacterial nutrientss to solidification test specimen under the environmental condition that appropriate bacterial is grown；The bacterium is carbonate mineralized bacterium.The present invention uses bacterium flyash processing technique, and production cost is low, and the compression strength of material is up to 2-10Mpa after solidification, and production process is environmentally protective, and treated, and flyash is environmentally friendly.
Description
Technical field
The present invention relates to flyash to solidify technical field, and in particular to bacterium is used for the cured application of flyash.
Background technique
Flyash is the industrial solid castoff generated after coal burning.Traditional flyash curing method is using cement etc.
Cementing material is prepared into all kinds of construction materials.From another point of view, it is also a kind of effective hand for administering flyash that flyash, which solidifies,
Section.
It is not only at high cost using the cementitious materials solidified fly ash such as cement, alkali-activator, and there are alkaline matters pair
Environmental ecology affects, and the flyash after solidification is only used for traditional the field of building materials, the ring that can not be applied on a large scale
Border ecological construction field.
In addition, many coal-burning power plants use low-NO_x combustion technology, and flyash loss on ignition is significantly as environmental protection pressure increases
Increase, the field of building materials application is severely limited.Including low nitrogen burning flyash, denitration flyash, desulfurization flyash etc.
There is great difficulty in the comprehensive utilization of similar industrial solid waste, and flyash environmental pollution problem cannot access effective solution for a long time
Certainly.
Summary of the invention
For the defects in the prior art and insufficient, the present invention provides bacteriums to be used for the cured application of flyash, described
Bacterium is carbonate mineralized bacterium.
The present invention provides a kind of flyash bacterial immobilisation materials simultaneously.The preparation method of provided material includes：It will be thin
Bacterium, water and flyash mixing, mixture are poured, are solidified, being conserved and to be obtained flyash bacterial immobilisation material；The maintenance is suitable
Under the environmental condition of bacterial growth, solidification test specimen is conserved using the solution containing bacterial nutrientss；The bacterium is carbon
Hydrochlorate mineralising bacterium.
Preferably, the preparation method of material of the present invention includes：
(1) bacterium, water and flyash are mixed to prepare mixture；
(2) mixture is poured into mold and is poured；
(3) test specimen will be poured and place reasonable time solidified forming；
(4) under the environmental condition of appropriate bacterial growth, solidification test specimen is carried out using the solution containing bacterial nutrientss
Maintenance.
In some embodiments, the mass ratio of bacterium of the present invention, water and flyash is：(0.1-1):(40-50)：(70-
100)。
In some embodiments, three-dimensional of the present invention pours test specimen through 2-3 days solidified formings.
In some embodiments, the solution of the invention containing bacterial nutrientss is the solution containing calcium chloride and urea.
Advantages of the present invention is：
The present invention uses bacterium flyash processing technique, and production cost is low, and the compression strength of material is up to 2- after solidification
10Mpa, and production process is environmentally protective, treated, and flyash is environmentally friendly, and it is not only good in economic efficiency, and also environmental protection is raw
State is profitable, opens completely new approach for flyash ecological use.
Detailed description of the invention
Electron scanning micrograph after Fig. 1 flyash bacterial treatment, (a), (b), (c), (d) are different amplification
Photo.
Specific embodiment
The present invention can mix gained bacterium solution after Bacteria Culture with water and flyash, and Bacteria Culture is that strain is placed in culture
In liquid, the culture reasonable time obtains bacterium solution under preference temperature.The solution of the present invention be suitable for include but is not limited to ordinary fly ash,
Desulfurization flyash, denitration flyash, low calcium ash and high calcium ash etc..Carbonate mineralized bacterial metabolism process of the invention generates
CO32+ generates the corn spar with cementation in having Ca2+ environment.General carbonate mineralized bacterial nutrientss packet
It includes：Urea, vegetable protein etc., using Bacillus pasteurii, (the towering biotechnology in Shanghai Shanghai is limited in following specific embodiments research
Company ATCC11859).Following scheme can be selected in the culture solution condition of the bacterium：Soy peptone, tryptone, NaCl, urea and
What deionized water was prepared, the culture solution composition weight ratio is：Soy peptone：Tryptone：NaCl：Urea：Deionized water
=1:3:1:5:250.Condition of culture is optional：It is cultivated 24 hours or so under 30 DEG C of water bath condition, obtains bacterium solution.
The present invention conserves solution used and includes at least nitrogen (source such as urea), the elements such as calcium (source such as calcium chloride), this hair
Bacterium flyash calcium chloride and urea liquid health in bright specific embodiment after pouring molding, calcium chloride and urea liquid
When concentration is 1mol/L, when health, is 3-7 days a length of,
Embodiment 1：
70g flyash, addition bacterium powder 0.1g, 40ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
After shape 2, the mixed solution of 1mol/L calcium chloride solution and 1mol/L urea liquid is conserved, and measures the machinery of different larval instar in the process
Intensity：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | 2.4 | 3.45 | 3.7 | 4.3 |
Comparative example：
The comparative example unlike the first embodiment, does not add bacterium powder.As a result detection flyash is without intensity.
Embodiment 2：
80g flyash, addition bacterium powder 0.4g, 46ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
It after shape 1.5 days, is conserved using calcium chloride and urea mixed solution, measures the mechanical strength of different larval instar in the process：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | 2.7 | 5.64 | 5.4 | 4.9 |
Electronic Speculum test is carried out to the curing materials of the embodiment, as shown in Figure 1, flyash is effectively solidified.
Embodiment 3：
90g flyash, addition bacterium powder 0.7g, 50ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
It after shape 3 days, is conserved in calcium chloride and urea mixed solution, measures the mechanical strength of different larval instar in the process：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | 2 | 6.6 | 5.6 | 6.3 |
Embodiment 4：
100g flyash, addition bacterium powder 1g, 50ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
After shape 2.5 days, is conserved in calcium chloride and urea mixed solution, measure the mechanical strength of different larval instar in the process：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | / | 6.6 | / | 10.3 |
Embodiment 5：
88g flyash, addition bacterium powder 0.7g, 48ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
After shape 2 days, is conserved in calcium chloride and urea mixed solution, measure the mechanical strength of different larval instar in the process：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | / | 7.1 | / | 11.5 |
Embodiment 6：
93g flyash, addition bacterium powder 0.3g, 40ml tap water are uniformly mixed, and slurry is poured into grinding tool and pours, be solidified into
After shape 2 days, is conserved in calcium chloride and urea mixed solution, measure the mechanical strength of different larval instar in the process：
| Age (day) | 7 | 14 | 21 | 28 |
| Compression strength (Mpa) | / | 6.1 | / | 8.3 |
Claims (8)
1. bacterium is used for the cured application of flyash, the bacterium is carbonate mineralized bacterium.
2. a kind of flyash bacterial immobilisation material, which is characterized in that the preparation method of the material includes：By bacterium, water and powder
Coal ash mixing, mixture are poured, are solidified, being conserved and to be obtained flyash bacterial immobilisation material；The maintenance is in appropriate bacterial growth
Environmental condition under, using the solution containing bacterial nutrientss to solidification test specimen conserve；The bacterium is carbonate mineralized
Bacterium.
3. flyash bacterial immobilisation material as claimed in claim 2, which is characterized in that the preparation method of the material includes：
(1) bacterium, water and flyash are mixed to prepare mixture；
(2) mixture is poured into mold and is poured；
(3) test specimen will be poured and place reasonable time solidified forming；
(4) under the environmental condition of appropriate bacterial growth, solidification test specimen is conserved using the solution containing bacterial nutrientss.
4. flyash bacterial immobilisation material described in Claims 2 or 3, which is characterized in that bacterium, water and flyash mass ratio
For：(0.1-1):(40-50)：(70-100).
5. flyash bacterial immobilisation material described in Claims 2 or 3, which is characterized in that pour test specimen through 2-3 days solidified formings.
6. flyash bacterial immobilisation material described in Claims 2 or 3, which is characterized in that the solution containing bacterial nutrientss
For the solution containing calcium chloride and urea.
7. a kind of preparation method of flyash bacterial immobilisation material, which is characterized in that method includes：By bacterium, water and flyash
Mixing, mixture are poured, are solidified, being conserved and to be obtained flyash bacterial immobilisation material；The maintenance is the ring grown in appropriate bacterial
Under the conditions of border, solidification test specimen is conserved using the solution containing bacterial nutrientss；The bacterium is carbonate mineralized bacterium.
8. the preparation method of flyash bacterial immobilisation material as claimed in claim 7, which is characterized in that method includes：
(1) bacterium, water and flyash are mixed to prepare mixture；
(2) mixture is poured into mold and is poured；
(3) test specimen will be poured and place reasonable time solidified forming；
(4) under the environmental condition of appropriate bacterial growth, solidification test specimen is conserved using the solution containing bacterial nutrientss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947166.2A CN108892428A (en) | 2018-08-20 | 2018-08-20 | Bacterium is used for the cured application of flyash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947166.2A CN108892428A (en) | 2018-08-20 | 2018-08-20 | Bacterium is used for the cured application of flyash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108892428A true CN108892428A (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810947166.2A Pending CN108892428A (en) | 2018-08-20 | 2018-08-20 | Bacterium is used for the cured application of flyash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877234A (en) * | 2021-01-26 | 2021-06-01 | 太原理工大学 | Paenibacillus mucilaginosus, microorganism-excited circulating fluidized bed fly ash cementing material, method and application |
| CN112979193A (en) * | 2021-03-09 | 2021-06-18 | 东北大学 | Preparation method of bio-based fly ash admixture |
| CN114082759A (en) * | 2021-11-18 | 2022-02-25 | 国网新疆电力有限公司电力科学研究院 | Method for safely disposing fly ash |
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| CN101365790A (en) * | 2005-12-15 | 2009-02-11 | 三角洲研究基金会 | Immobilisation of bacteria to a geological material |
| CN101781152A (en) * | 2010-03-25 | 2010-07-21 | 北京精耕天下科技发展有限公司 | Multi-effect active silicon fertilizer and production process thereof |
| CN105386433A (en) * | 2015-12-08 | 2016-03-09 | 南京林业大学 | Microorganism soil-reinforcement cement fly-ash gravel (CFG) pile composite foundation and construction method |
| CN106904854A (en) * | 2017-03-29 | 2017-06-30 | 河海大学 | The method that flyash treatment and flyash produce building materials is carried out using microorganism |
| CN108017337A (en) * | 2017-12-13 | 2018-05-11 | 李珠 | Microorganism crack autogenous healing gunite concrete and preparation method thereof |
| CN108033806A (en) * | 2017-12-18 | 2018-05-15 | 郭舒洋 | A kind of preparation method of expanded perlite thermal-nsulation brick |
| CN108191400A (en) * | 2018-04-10 | 2018-06-22 | 朱文杰 | A kind of preparation method of industrial slag base fired brick |
-
2018
- 2018-08-20 CN CN201810947166.2A patent/CN108892428A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365790A (en) * | 2005-12-15 | 2009-02-11 | 三角洲研究基金会 | Immobilisation of bacteria to a geological material |
| CN101781152A (en) * | 2010-03-25 | 2010-07-21 | 北京精耕天下科技发展有限公司 | Multi-effect active silicon fertilizer and production process thereof |
| CN105386433A (en) * | 2015-12-08 | 2016-03-09 | 南京林业大学 | Microorganism soil-reinforcement cement fly-ash gravel (CFG) pile composite foundation and construction method |
| CN106904854A (en) * | 2017-03-29 | 2017-06-30 | 河海大学 | The method that flyash treatment and flyash produce building materials is carried out using microorganism |
| CN108017337A (en) * | 2017-12-13 | 2018-05-11 | 李珠 | Microorganism crack autogenous healing gunite concrete and preparation method thereof |
| CN108033806A (en) * | 2017-12-18 | 2018-05-15 | 郭舒洋 | A kind of preparation method of expanded perlite thermal-nsulation brick |
| CN108191400A (en) * | 2018-04-10 | 2018-06-22 | 朱文杰 | A kind of preparation method of industrial slag base fired brick |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877234A (en) * | 2021-01-26 | 2021-06-01 | 太原理工大学 | Paenibacillus mucilaginosus, microorganism-excited circulating fluidized bed fly ash cementing material, method and application |
| CN112979193A (en) * | 2021-03-09 | 2021-06-18 | 东北大学 | Preparation method of bio-based fly ash admixture |
| CN114082759A (en) * | 2021-11-18 | 2022-02-25 | 国网新疆电力有限公司电力科学研究院 | Method for safely disposing fly ash |
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Application publication date: 20181127 |