CN115650449B - Load type composite nutrition material for continuously and slowly releasing and promoting microorganisms to degrade anthracene and pyrene in groundwater - Google Patents
Load type composite nutrition material for continuously and slowly releasing and promoting microorganisms to degrade anthracene and pyrene in groundwater Download PDFInfo
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- CN115650449B CN115650449B CN202211437794.9A CN202211437794A CN115650449B CN 115650449 B CN115650449 B CN 115650449B CN 202211437794 A CN202211437794 A CN 202211437794A CN 115650449 B CN115650449 B CN 115650449B
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- pyrene
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- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 title claims abstract description 72
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 235000016709 nutrition Nutrition 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003673 groundwater Substances 0.000 title claims abstract description 35
- 244000005700 microbiome Species 0.000 title claims abstract description 20
- 230000001737 promoting effect Effects 0.000 title claims abstract description 14
- 230000035764 nutrition Effects 0.000 title description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims abstract description 13
- 238000006731 degradation reaction Methods 0.000 claims abstract description 13
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007836 KH2PO4 Substances 0.000 claims abstract description 7
- 239000001110 calcium chloride Substances 0.000 claims abstract description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 7
- 229910000397 disodium phosphate Inorganic materials 0.000 claims abstract description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 7
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 claims abstract description 7
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 7
- 241000209140 Triticum Species 0.000 claims abstract description 6
- 235000021307 Triticum Nutrition 0.000 claims abstract description 6
- 239000010902 straw Substances 0.000 claims abstract description 6
- 229930003427 Vitamin E Natural products 0.000 claims abstract description 4
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229940046009 vitamin E Drugs 0.000 claims abstract description 4
- 235000019165 vitamin E Nutrition 0.000 claims abstract description 4
- 239000011709 vitamin E Substances 0.000 claims abstract description 4
- 238000002791 soaking Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000004108 freeze drying Methods 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims 2
- 238000013268 sustained release Methods 0.000 claims 2
- 239000012730 sustained-release form Substances 0.000 claims 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 6
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 abstract description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 6
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 abstract description 6
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 abstract description 6
- 230000002459 sustained effect Effects 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 230000000638 stimulation Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229930003231 vitamin Natural products 0.000 description 2
- 235000013343 vitamin Nutrition 0.000 description 2
- 229940088594 vitamin Drugs 0.000 description 2
- 239000011782 vitamin Substances 0.000 description 2
- 150000003722 vitamin derivatives Chemical class 0.000 description 2
- PCFMUWBCZZUMRX-UHFFFAOYSA-N 9,10-Dihydroxyanthracene Chemical compound C1=CC=C2C(O)=C(C=CC=C3)C3=C(O)C2=C1 PCFMUWBCZZUMRX-UHFFFAOYSA-N 0.000 description 1
- 241001156739 Actinobacteria <phylum> Species 0.000 description 1
- 241000192125 Firmicutes Species 0.000 description 1
- 241000192142 Proteobacteria Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- UFNSSSMNJMAOAN-UHFFFAOYSA-N heptacyclo[14.10.2.02,15.03,12.05,10.020,28.023,27]octacosa-1(26),2(15),3,5,7,9,11,13,16,18,20(28),21,23(27),24-tetradecaene Chemical compound C1=CC2=C3C4=CC5=CC=CC=C5C=C4C=CC3=C(C=CC=C3C=C4)C3=C2C4=C1 UFNSSSMNJMAOAN-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- JMLIZQVKDDUDQE-UHFFFAOYSA-N pyrene-1,2-diol Chemical compound C1=CC=C2C=CC3=C(O)C(O)=CC4=CC=C1C2=C43 JMLIZQVKDDUDQE-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a supported composite nutritional material for promoting degradation of anthracene and pyrene in groundwater by microorganisms through sustained slow release, and relates to the technical field of water treatment. The supported composite nutritional material consists of a slow-release material and a nutritional matrix; wherein the slow release material is wheat straw, and the nutritional matrix is composed of KH2PO4、Na2HPO4、MnSO4、FeSO4、CaCl2、NH4NO3、 vitamin E. The supported composite nutritional material provided by the invention is injected into underground water for 3 days at one time, and then starts to stimulate microorganisms in the underground water to degrade anthracene and pyrene, so that the supported composite nutritional material can continuously and efficiently act for more than 30 days.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a supported composite nutritional material for continuously and slowly releasing and promoting microorganisms to degrade anthracene and pyrene in groundwater.
Background
With the development of key industries such as coking, chemical industry, oil gas exploitation and the like, typical organic pollutant polycyclic aromatic hydrocarbon (Polycyclic aromatic hydrocarbons, PAHs for short) with a 'three-induced' effect enters a groundwater environment in various ways, so that the content of anthracene and pyrene in groundwater exceeds the standard, serious threat is caused to ecological environment and human health, and the control and repair of anthracene and pyrene polluted groundwater are urgently needed.
The in-situ stimulation microorganism repairing technology is one of research hotspots in the field of polluted groundwater repairing, and with the development of a slow-release and controlled-release technology in recent years, the two technologies are combined to solve the problems of rebound of organic pollutant content in groundwater, process reduction, cost reduction and aging improvement, so that the technology becomes a new research hotspot and development trend. Therefore, the continuous slow release restoration of the groundwater polluted by anthracene and pyrene based on the in-situ stimulation microorganism restoration technology is an important direction of research in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a supported composite nutritional material for promoting microorganisms to degrade anthracene and pyrene in groundwater. The supported composite nutritional material can efficiently and slowly release the nutritional matrix and promote the stimulation of microorganisms in groundwater to degrade anthracene and pyrene.
The invention is realized by adopting the following technical scheme:
The supported composite nutritional material for promoting microorganisms to degrade anthracene and pyrene in groundwater is composed of a slow-release material and a nutritional matrix;
The slow release material is wheat straw;
The nutritional matrix is composed of KH2PO4、Na2HPO4、MnSO4、FeSO4、CaCl2、NH4NO3、 vitamin E.
Preferably, 1L of the nutrient medium comprises the following components in mass:
KH2PO4 0.05-0.10g、Na2HPO4 0.005-0.02g、MnSO4 0.002-0.005g、FeSO4 0.02-0.05g、CaCl2 0.05-0.10g、NH4NO3 0.20-0.30g、 0.03-0.05g of vitamin E and the balance of water.
The invention also provides a preparation method of the supported composite nutritional material for promoting the degradation of anthracene and pyrene in groundwater by microorganisms, which comprises the following steps:
Mixing and soaking the slow-release material and the nutritional matrix according to the feed-liquid ratio of 1:1.5-3, controlling the pH value to be 7-10, controlling the soaking time to be 30-60h, taking out and freeze-drying to obtain the load type composite nutritional material.
Preferably, the particle size of the slow release material is 30-60 μm.
Compared with the prior art, the invention has the following beneficial effects:
The invention provides a supported composite nutrition material capable of continuously and slowly releasing and promoting microorganisms to adsorb and degrade anthracene and pyrene in underground water, wherein the supported composite nutrition material is injected into the underground water for 30 days, anthracene and pyrene in the underground water are effectively degraded, and the removal rates of anthracene and pyrene are respectively up to 83.99% and 98.50%.
Detailed Description
The following detailed description of the present invention provides for a more complete understanding of the objects, features and advantages of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention provides a supported composite nutrition material for adsorbing and degrading anthracene and pyrene in groundwater, which can efficiently adsorb anthracene and pyrene in groundwater, activate degrading bacteria in groundwater and improve degradation efficiency, thereby realizing the purpose of efficiently removing anthracene and pyrene in groundwater. The invention is further illustrated and described below in connection with specific examples.
Example 1
A supported composite nutritional material for promoting microorganisms to degrade anthracene and pyrene in groundwater is composed of wheat straw with an average particle size of 50 mu m (specific surface area of 5.42m 2/g) and a nutritional matrix, wherein 1L of the nutritional matrix comprises the following components in mass:
KH2PO4 0.10g、Na2HPO4 0.02g、MnSO4 0.005g、FeSO4 0.05g、CaCl2 0.10g、NH4NO30.20g、 Vitamin E0.05 g, and water for the rest.
The preparation method of the supported composite nutritional material for promoting the degradation of anthracene and pyrene in groundwater by microorganisms comprises the following steps:
And mixing and soaking the slow-release material and the nutritional matrix according to a feed-liquid ratio of 1:2, adjusting the pH value to 8, soaking for 48 hours, taking out and drying to obtain the load type composite nutritional material, wherein the drug loading rate of the load type composite nutritional material is 1.98%, and the specific surface area of the load type composite nutritional material is 2.74m 2/g.
Example 2
A supported composite nutritional material for promoting microorganisms to degrade anthracene and pyrene in groundwater is composed of wheat straw with an average particle size of 50 mu m (specific surface area of 5.42m 2/g) and a nutritional matrix, wherein 1L of the nutritional matrix comprises the following components in mass:
KH2PO4 0.05g、Na2HPO4 0.01g、MnSO4 0.005g、FeSO4 0.03g、CaCl2 0.10g、NH4NO30.30g、 Vitamin E0.03 g, and water for the rest.
The preparation method of the supported composite nutritional material for promoting the degradation of anthracene and pyrene in groundwater by microorganisms comprises the following steps:
Mixing and soaking the slow-release material and the nutritional matrix according to a feed-liquid ratio of 1:2.5, adjusting the pH value to 9, soaking for 48 hours, taking out and drying to obtain the load type composite nutritional material, wherein the drug loading rate of the load type composite nutritional material is 1.98%, and the specific surface area of the composite material is 2.81m 2/g.
Comparative example 1 (compared to example 1 lacking ferrous sulfate and microbion E)
A supported composite nutritional material for promoting microorganisms to degrade anthracene and pyrene in groundwater is composed of wheat straw with an average particle size of 50 mu m (specific surface area of 5.42m 2/g) and a nutritional matrix, wherein 1L of the nutritional matrix comprises the following components in mass:
KH2PO4 0.10g、Na2HPO4 0.02g、MnSO4 0.005g、CaCl2 0.10g、NH4NO3 0.20g, The balance being water.
The preparation method of the supported composite nutritional material refers to the example 1, and the specific surface area of the supported composite nutritional material is 2.77m 2/g.
The supported composite nutritional materials prepared in examples 1-2 and comparative example 1 were injected into the anthrapyrene-contaminated groundwater (water temperature: 10 ℃) wherein the anthrapyrene content in the groundwater was 10mg/L, and the input amount of the supported composite nutritional material in 1L of groundwater was 50mg, respectively. And a blank case is additionally arranged, namely no medicament is injected. The degradation rates of anthracene and pyrene in groundwater were measured by periodic sampling, as shown in Table 1.
TABLE 1 results of experiments on the stimulation of degradation of indigenous microorganisms in anthracene and pyrene contaminated groundwater by supported composite nutritional materials
As can be seen from Table 1, after the load type composite nutrition material prepared in example 1 is added into groundwater for 30 days, the degradation rate of anthracene and pyrene in the groundwater reaches 83.99% and 98.50%.
Example 3
The supported composite nutritional material synthesized in the embodiment 1 is adopted for a test based on an in-situ injection repair engineering mode, and specifically, the supported composite nutritional material disclosed by the invention is used for repairing anthracene and pyrene polluted groundwater. The test device consists of an organic glass tank with the length, the width and the height of 50cm, 30cm and 30cm respectively, an imports and imports reservoir with the length of 5cm at the left end and the right end, lithology mediums are filled in the imports and impoundments, the lithology mediums are paved into powdery clay, coarse sand, middle sand, fine sand and powdery clay from bottom to top respectively, the thicknesses of the powdery clay are 2cm, 6cm and 6cm respectively, the upper and lower layers of the powdery clay are water-bearing layer top plates and bottom plates, the test process is controlled at 10-15 ℃, dissolved oxygen is lower than 1.0mg/L, the hydraulic gradient of groundwater is 4 per mill, at the beginning of the test, 10mg/L of anthracene and pyrene pollute underground water environment simulation liquid, water is fed into the water-bearing layer from bottom to top at a flow rate of 10mL/min, 50g of load type composite nutrition materials are injected into the water-bearing injection well after the anthracene and pyrene pollutes underground water continuously fed into the water-bearing layer for 30 days, the content of anthracene and pyrene in the underground water sample monitoring of different lithology mediums is periodically, and the anthracene and pyrene-degrading bacteria are cultivated at the same time after the anthracene and pyrene is degraded.
The results show that: after 30 days of operation, the supported composite nutritional material stimulates the degradation efficiency of indigenous microorganisms in groundwater to achieve 79.03 percent and 77.13 percent, compared with the effect test of adding anthracene and pyrene in the culturable degradation bacteria, the degradation efficiency is improved by 53.14 percent and 48.77, the response rule of dominant bacteria is mainly Proteobacteria, firmicutes, actinobacteria, the ratio is 88.9 percent, 5.11 percent and 5.12 percent respectively, microextraction-GC/MS full scanning detection is utilized to infer that the degradation paths of anthracene and pyrene are oxidized into anthracene-9, 10-diol and pyrene diol firstly and then are gradually degraded into micromolecular organic acid through ring opening, and the physiological and biochemical properties of the indigenous bacteria are shown as being capable of decomposing micromolecular saccharides and organic acid, so that the supported composite nutritional material has the effect of continuously slowly releasing and repairing the anthracene and pyrene polluted groundwater and is ecological safety.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (2)
1. The supported composite nutritional material is characterized by comprising a slow-release material and a nutritional matrix;
The slow release material is wheat straw;
the mass of each component in 1L of the nutrient medium is as follows:
KH2PO40.05-0.10g、Na2HPO40.005-0.02g、MnSO40.002-0.005g、FeSO40.02-0.05g、CaCl20.05-0.10g、NH4NO30.20-0.30g、 0.03-0.05g of vitamin E and the balance of solvent; the solvent is water;
the preparation method of the supported composite nutritional material comprises the following steps:
Mixing and soaking the slow-release material and the nutritional matrix according to the feed-liquid ratio of 1:1.5-3, controlling the pH value to be 7-10, controlling the soaking time to be 30-60h, taking out and freeze-drying to obtain the load type composite nutritional material.
2. The sustained-release supported composite nutritional material for promoting degradation of anthracene and pyrene in groundwater by microorganisms according to claim 1, wherein the particle size of the sustained-release material is 30-60 μm.
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| CN101219832A (en) * | 2008-01-25 | 2008-07-16 | 天津大学 | Carbon emission material for renovation of nitrogen hydrogen nitrate pollution groundwater and production method |
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| CN107324462A (en) * | 2017-06-30 | 2017-11-07 | 南京中科水治理股份有限公司 | A kind of spacetabs type algal control particle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6787034B2 (en) * | 2002-07-12 | 2004-09-07 | Remediation Products, Inc. | Compositions for removing hydrocarbons and halogenated hydrocarbons from contaminated environments |
| EP2970035A4 (en) * | 2013-03-15 | 2017-04-05 | Ndsu Research Foundation | Iron-functionalized alginate for phosphate and other contaminant removal and recovery from aqueous solutions |
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- 2022-11-15 CN CN202211437794.9A patent/CN115650449B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219832A (en) * | 2008-01-25 | 2008-07-16 | 天津大学 | Carbon emission material for renovation of nitrogen hydrogen nitrate pollution groundwater and production method |
| JP2012179595A (en) * | 2011-02-28 | 2012-09-20 | Solutions Ies Inc | IN SITU pH ADJUSTMENT FOR SOLID AND GROUNDWATER REMEDIATION |
| CN107324462A (en) * | 2017-06-30 | 2017-11-07 | 南京中科水治理股份有限公司 | A kind of spacetabs type algal control particle |
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