CN108300482A - A kind of renovation agent and preparation method thereof for cadmium pollution soil - Google Patents
A kind of renovation agent and preparation method thereof for cadmium pollution soil Download PDFInfo
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- CN108300482A CN108300482A CN201810063072.9A CN201810063072A CN108300482A CN 108300482 A CN108300482 A CN 108300482A CN 201810063072 A CN201810063072 A CN 201810063072A CN 108300482 A CN108300482 A CN 108300482A
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- cadmium pollution
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The renovation agent and preparation method thereof that the invention discloses a kind of for cadmium pollution soil, includes the raw material of following parts by weight：15 20 parts of 10 15 parts of peppermint, 35 parts of quick lime, 10 15 parts of medical stone, 21 28 parts of clay mineral, 8 13 parts of nano silicon dioxide, 5 10 parts of magnesia powder, 12 18 parts of straw ash, 45 parts of Sodium Polyacrylate, 25 parts of furfural dregs, 68 parts of oxalic acid, 48 parts of manioc waste and polyvinyl alcohol.Raw material sources of the present invention are extensive, and renovation technique is simple, and by the synergistic effect between various raw materials, the finished product of preparation can effectively remove the cadmium ion in soil, and repairing efficiency is short, and prospect of the application is wide.
Description
Technical field
The present invention relates to soil remediation field, specifically a kind of renovation agent for cadmium pollution soil.
Background technology
Soil refers to one layer of loose substance of earth surface, by various particulate minerals, organic substance, moisture, sky
The compositions such as gas, microorganism, can growing plant.Soil minerals, animals and plants made of rock weathering, the production of microorganism residuum decomposition
Raw organic matter, geobiont（Solid matter）And moisture（Liquid phase substance）, air（Gaseous substance）, the humus etc. of oxidation
Composition.In recent years, with the increase of Agricultural Activities, increasing for industrial wastewater discharge and being excessively used for chemical fertilizer, soil
The structure of earth is destroyed, and the situations such as hardened occurs in soil, and the agricultural output of plantation is low, poor quality, heavy metal in soil from
The concentration of son is also improving.
Cadmium is exactly common heavy metal species, and cadmium ion has the spies such as chemical activity is strong, migration is big, toxicity is lasting
Point is difficult degradation in the environment, and accumulation, migration in the soil not only cause composition of the soil, structure, changes of function, also
It can inhibit crop root effect and photosynthesis, cause crop failure even to have no harvest, it is often more important that cadmium is moved by food chain
It moves into the human body, accumulates gradually in human body, cause human body slow poisoning, lead to kidney, liver, lung, bone, genitals
Official, immune system, cardiovascular system injury cause high risks to health, therefore reduce the content of cadmium ion in soil
It is very urgent.
Invention content
The purpose of the present invention is to provide a kind of renovation agents for cadmium pollution soil, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides the following technical solutions：
A kind of renovation agent for cadmium pollution soil includes the raw material of following parts by weight：10-15 parts of peppermint, 3-5 parts of quick lime,
10-15 parts of medical stone, 21-28 parts of clay mineral, 8-13 parts of nano silicon dioxide, 5-10 parts of magnesia powder, straw ash 12-18
Part, 4-5 parts of Sodium Polyacrylate, 2-5 parts of furfural dregs, 6-8 parts of oxalic acid, 4-8 parts of manioc waste and 15-20 parts of polyvinyl alcohol.
As a further solution of the present invention：Straw ash includes soybean stalk ash, wheat stalk ash, maize straw ash, height
At least one of fine strain of millet straw ash and sugarcane straw ash, clay mineral include one or two kinds of in sepiolite and illite
Mixture.
As a further solution of the present invention：The grain size of furfural dregs and manioc waste is 0.18-2.14mm.
The preparation method of the renovation agent for cadmium pollution soil, is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 40-55 degrees Celsius, and the pressure of extraction is
3.2-5.4Mpa digests extract liquor and complex enzyme at 30-40 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2 natural cooling and is ground by medical stone and clay mineral in 360-450 degrees Celsius of heat modification 3-5 hours
Powder crosses 200 mesh sieve, obtains maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added by step 3, and it is small that 2-3 is impregnated under 85-90 degrees Celsius
When and using supersonic oscillations 25-40 minutes, centrifugal filtration and be washed with deionized to neutrality, at 60-70 degrees Celsius
Lower drying, obtains the first mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 15-20 minutes after being mixed thoroughly in the case where electric field strength is 28-36KV, it is mixed to obtain second
Close object；
First mixture, the second mixture and polyvinyl alcohol are stirred and are done under 30-40 degrees Celsius by step 5
It is dry, you can to obtain finished product.
As a further solution of the present invention：The power of ultrasonic wave is 750-900W in step 3, and speed is stirred in step 5
Degree is 180-300rpm.
The application method of the renovation agent for cadmium pollution soil, is as follows：By finished product and cadmium pollution soil
According to mass ratio 1:300-360 is mixed and is turned over, and it is 20-25% then to add water to water content, and overlay film conserves 8-12 days
.
Compared with prior art, the beneficial effects of the invention are as follows：Raw material sources of the present invention are extensive, and renovation technique is simple, lead to
The synergistic effect between various raw materials is crossed, the finished product of preparation can effectively remove the cadmium ion in soil, and repairing efficiency is short, makes
With having a extensive future.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of renovation agent for cadmium pollution soil includes the raw material of following parts by weight：10 parts of peppermint, 3 parts of quick lime, medical stone
10 parts, 21 parts of clay mineral, 8 parts of nano silicon dioxide, 5 parts of magnesia powder, 12 parts of straw ash, 4 parts of Sodium Polyacrylate, furfural dregs
15 parts of 2 parts, 6 parts of oxalic acid, 4 parts of manioc waste and polyvinyl alcohol.Straw ash includes soybean stalk ash, maize straw ash and sugarcane stalk
The mixture of ash, clay mineral use sepiolite.
The preparation method of the renovation agent for cadmium pollution soil, is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 46 degrees Celsius, and the pressure of extraction is
3.8Mpa digests extract liquor and complex enzyme at 35 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2, by medical stone and clay mineral in 420 degrees Celsius of heat modifications 4 hours, natural cooling and grind into powder, mistake
200 mesh sieve, and obtain maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added, 2 hours are impregnated under 88 degrees Celsius simultaneously by step 3
And using supersonic oscillations 32 minutes, centrifugal filtration and it is washed with deionized to neutrality, it is dry under 66 degrees Celsius, it obtains
First mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 18 minutes after being mixed thoroughly in the case where electric field strength is 31KV, obtains the second mixture；
Step 5 stirs the first mixture, the second mixture and polyvinyl alcohol and dry under 35 degrees Celsius,
It can be obtained finished product.
The application method of the renovation agent for cadmium pollution soil, is as follows：By finished product and cadmium pollution soil
According to mass ratio 1:330 mix and turn over, and it is 22% then to add water to water content, and overlay film conserves 10 days.
The cadmium pollution soil in Shanxi somewhere is administered using the product and application method of embodiment 1, cadmium in soil before repairing
Content is 0.095mg/kg, and cadmium content is 0.011mg/kg in soil after reparation, and cadmium content rate of descent is 88.42%.
Embodiment 2
A kind of renovation agent for cadmium pollution soil includes the raw material of following parts by weight：12.5 parts of peppermint, 3.6 parts of quick lime, wheat
11 parts of meal stone, 23 parts of clay mineral, 10 parts of nano silicon dioxide, 7 parts of magnesia powder, 14 parts of straw ash, Sodium Polyacrylate 4.3
Part, 3.5 parts of furfural dregs, 6.8 parts of oxalic acid, 5.5 parts of manioc waste and 17.5 parts of polyvinyl alcohol.The grain size of furfural dregs and manioc waste is
0.64mm。
The preparation method of the renovation agent for cadmium pollution soil, is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 50 degrees Celsius, and the pressure of extraction is
4.5Mpa digests extract liquor and complex enzyme in 36 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2, by medical stone and clay mineral in 420 degrees Celsius of heat modifications 4 hours, natural cooling and grind into powder, mistake
200 mesh sieve, and obtain maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added, 3 hours are impregnated under 86 degrees Celsius simultaneously by step 3
And using supersonic oscillations 35 minutes, centrifugal filtration and it is washed with deionized to neutrality, it is dry under 65 degrees Celsius, it obtains
First mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 20 minutes after being mixed thoroughly in the case where electric field strength is 33KV, obtains the second mixture；
Step 5 stirs the first mixture, the second mixture and polyvinyl alcohol and dry under 36 degrees Celsius,
It can be obtained finished product.
The application method of the renovation agent for cadmium pollution soil, is as follows：By finished product and cadmium pollution soil
According to mass ratio 1:350 mix and turn over, and it is 24% then to add water to water content, and overlay film conserves 11 days
The cadmium pollution soil in Henan somewhere is administered using the product and application method of embodiment 2, cadmium content in soil before repairing
For 0.142mg/kg, cadmium content is 0.008mg/kg in soil after reparation, and cadmium content rate of descent is 94.37%.
Embodiment 3
A kind of renovation agent for cadmium pollution soil includes the raw material of following parts by weight：14 parts of peppermint, 4.5 parts of quick lime, wheat meal
14 parts of stone, 26 parts of clay mineral, 12 parts of nano silicon dioxide, 8.8 parts of magnesia powder, 16.5 parts of straw ash, Sodium Polyacrylate 4.8
Part, 4 parts of furfural dregs, 7.5 parts of oxalic acid, 7 parts of manioc waste and 19 parts of polyvinyl alcohol.The grain size of furfural dregs and manioc waste is
1.66mm。
The preparation method of the renovation agent for cadmium pollution soil, is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 54 degrees Celsius, and the pressure of extraction is
5.2Mpa digests extract liquor and complex enzyme at 38 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2, by medical stone and clay mineral in 440 degrees Celsius of heat modifications 5 hours, natural cooling and grind into powder, mistake
200 mesh sieve, and obtain maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added, impregnated 2.8 hours under 90 degrees Celsius by step 3
And using the supersonic oscillations 35 minutes of 800W, centrifugal filtration and it is washed with deionized to neutrality, under 68 degrees Celsius
It is dry, obtain the first mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 20 minutes after being mixed thoroughly in the case where electric field strength is 35KV, obtains the second mixture；
Step 5, by the first mixture, the second mixture and polyvinyl alcohol stirred with the rotating speed of 240rpm and
It is dry under 34 degrees Celsius, you can to obtain finished product.
The application method of the renovation agent for cadmium pollution soil, is as follows：By finished product and cadmium pollution soil
According to mass ratio 1:320 mix and turn over, and it is 20% then to add water to water content, and overlay film conserves 12 days
The cadmium pollution soil of Certain District, Hunan is administered using the product and application method of embodiment 3, cadmium content in soil before repairing
For 0.178mg/kg, cadmium content is 0.019mg/kg in soil after reparation, and cadmium content rate of descent is 89.33%.
Embodiment 4
A kind of renovation agent for cadmium pollution soil includes the raw material of following parts by weight：15 parts of peppermint, 5 parts of quick lime, medical stone
15 parts, 28 parts of clay mineral, 13 parts of nano silicon dioxide, 10 parts of magnesia powder, 18 parts of straw ash, 5 parts of Sodium Polyacrylate, furfural
20 parts of 5 parts of slag, 8 parts of oxalic acid, 8 parts of manioc waste and polyvinyl alcohol.Straw ash includes soybean stalk ash, wheat stalk ash, corn stalk
The mixture of stalk ash, broomcorn straw ash and sugarcane straw ash, clay mineral includes sepiolite and illitic mixture.Furfural dregs
Grain size with manioc waste is 1.68mm.
The preparation method of the renovation agent for cadmium pollution soil, is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 45 degrees Celsius, and the pressure of extraction is
3.6Mpa digests extract liquor and complex enzyme in 36 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2, by medical stone and clay mineral in 440 degrees Celsius of heat modifications 5 hours, natural cooling and grind into powder, mistake
200 mesh sieve, and obtain maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added, 2 hours are impregnated under 86 degrees Celsius simultaneously by step 3
And using the supersonic oscillations 35 minutes of 880W, centrifugal filtration and it is washed with deionized to neutrality, is done under 66 degrees Celsius
It is dry, obtain the first mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 18 minutes after being mixed thoroughly in the case where electric field strength is 36KV, obtains the second mixture；
Step 5, by the first mixture, the second mixture and polyvinyl alcohol stirred with the rotating speed of 300rpm and
It is dry under 34 degrees Celsius, you can to obtain finished product.
The application method of the renovation agent for cadmium pollution soil, is as follows：By finished product and cadmium pollution soil
According to mass ratio 1:300 mix and turn over, and it is 25% then to add water to water content, and overlay film conserves 10 days
The cadmium pollution soil in Hebei somewhere is administered using the product and application method of embodiment 4, cadmium content in soil before repairing
For 0.137mg/kg, cadmium content is 0.009mg/kg in soil after reparation, and cadmium content rate of descent is 93.43%.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (6)
1. a kind of renovation agent for cadmium pollution soil, which is characterized in that include the raw material of following parts by weight：10-15 parts of peppermint,
3-5 parts of quick lime, 10-15 parts of medical stone, 21-28 parts of clay mineral, 8-13 parts of nano silicon dioxide, 5-10 parts of magnesia powder,
12-18 parts of straw ash, 4-5 parts of Sodium Polyacrylate, 2-5 parts of furfural dregs, 6-8 parts of oxalic acid, 4-8 parts of manioc waste and polyvinyl alcohol 15-
20 parts.
2. the renovation agent according to claim 1 for cadmium pollution soil, which is characterized in that the straw ash includes soybean
At least one of straw ash, wheat stalk ash, maize straw ash, broomcorn straw ash and sugarcane straw ash, clay mineral includes
One or two kinds of mixture in sepiolite and illite.
3. the renovation agent according to claim 1 for cadmium pollution soil, which is characterized in that the furfural dregs and manioc waste
Grain size be 0.18-2.14mm.
4. a kind of preparation method of the renovation agent as described in any one of claims 1-3 for cadmium pollution soil, which is characterized in that
It is as follows：
Peppermint is used supercritical carbon dioxide extracting by step 1, and the temperature of extraction is 40-55 degrees Celsius, and the pressure of extraction is
3.2-5.4Mpa digests extract liquor and complex enzyme at 30-40 degrees Celsius, then high temperature enzyme deactivation, obtains peppermint enzymolysis liquid；
Step 2 natural cooling and is ground by medical stone and clay mineral in 360-450 degrees Celsius of heat modification 3-5 hours
Powder crosses 200 mesh sieve, obtains maifanite powder and clay mineral powder；
Medical stone, quick lime and magnesia powder are mixed and oxalic acid are added by step 3, and it is small that 2-3 is impregnated under 85-90 degrees Celsius
When and using supersonic oscillations 25-40 minutes, centrifugal filtration and be washed with deionized to neutrality, at 60-70 degrees Celsius
Lower drying, obtains the first mixture；
Step 4 mixes clay mineral powder, nano silicon dioxide, straw ash, Sodium Polyacrylate, furfural dregs and manioc waste simultaneously
And peppermint enzymolysis liquid is added, it is kept for 15-20 minutes after being mixed thoroughly in the case where electric field strength is 28-36KV, it is mixed to obtain second
Close object；
First mixture, the second mixture and polyvinyl alcohol are stirred and are done under 30-40 degrees Celsius by step 5
It is dry, you can to obtain finished product.
5. the preparation method of the renovation agent according to claim 4 for cadmium pollution soil, which is characterized in that the step
The power of ultrasonic wave is 750-900W in three, and mixing speed is 180-300rpm in step 5.
6. a kind of application method of the renovation agent as described in any one of claims 1-3 for cadmium pollution soil, which is characterized in that
It is as follows：By finished product and cadmium pollution soil according to mass ratio 1:300-360 is mixed and is turned over, and is then added water to aqueous
Mass fraction is 20-25%, and overlay film conserves 8-12 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810063072.9A CN108300482A (en) | 2018-01-23 | 2018-01-23 | A kind of renovation agent and preparation method thereof for cadmium pollution soil |
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| CN201810063072.9A CN108300482A (en) | 2018-01-23 | 2018-01-23 | A kind of renovation agent and preparation method thereof for cadmium pollution soil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110878210A (en) * | 2019-11-29 | 2020-03-13 | 云南平海新材料科技有限公司 | Nano active mineral soil heavy metal solidification repair liquid |
| CN111014275A (en) * | 2019-12-19 | 2020-04-17 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Heavy metal soil remediation agent and application thereof |
| CN116984365A (en) * | 2023-08-23 | 2023-11-03 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for reducing cadmium activity in soil by returning straw to field |
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| CN105542781A (en) * | 2015-12-14 | 2016-05-04 | 百色学院 | Heavy metal contaminated soil improving agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878210A (en) * | 2019-11-29 | 2020-03-13 | 云南平海新材料科技有限公司 | Nano active mineral soil heavy metal solidification repair liquid |
| CN111014275A (en) * | 2019-12-19 | 2020-04-17 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Heavy metal soil remediation agent and application thereof |
| CN111014275B (en) * | 2019-12-19 | 2021-07-02 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Heavy metal soil remediation agent and application thereof |
| CN116984365A (en) * | 2023-08-23 | 2023-11-03 | 广东省农业科学院农业质量标准与监测技术研究所 | Method for reducing cadmium activity in soil by returning straw to field |
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Application publication date: 20180720 |