CN109054856A - Soil modification clay mineral and preparation method thereof - Google Patents
Soil modification clay mineral and preparation method thereof Download PDFInfo
- Publication number
- CN109054856A CN109054856A CN201811078100.0A CN201811078100A CN109054856A CN 109054856 A CN109054856 A CN 109054856A CN 201811078100 A CN201811078100 A CN 201811078100A CN 109054856 A CN109054856 A CN 109054856A
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- Prior art keywords
- preparation
- clay mineral
- soil modification
- pal
- soil
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- 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
- C09K2101/00—Agricultural use
Abstract
The invention discloses a kind of soil modification clay mineral and preparation method thereof, which includes: 1) to calcine palygorskite PAL to obtain PAL powder；2) PAL powder, surfactant, water are mixed, sulfur-containing amino acid, EDTA, polyacrylic acid progress ultrasonic vibration is then added and obtains modified system；3) methylcellulose is added in modified system and is coated, then filtered, is dry, is broken to obtain soil modification clay mineral.The soil modification clay mineral can effectively in Enriching soil heavy metal, while the preparation method have the advantages that process simply and operate it is convenient.
Description
Technical field
The present invention relates to fertilizer, and in particular, to a kind of soil modification clay mineral and preparation method thereof.
Background technique
Since chemical fertilizer, pesticide is excessively used in soil for a long time, serious destruction, soil texture are caused to its natural ecosystems
It is impaired, lack active microelement, microbial environment is unbalance, eventually leads to quality of agricultural product decline, the mouthfeel that consumer eats is not
It is good, not comprehensive nutrition；Organic fertilizer economic input and artificial investment are big, and administration area is limited, and crop yield is low and false organic fertilizer
Bring negative effect leads to market confusion etc., all brings strong impact to fertilizer industry.Along with answering for soil large area
Food-safety problem mould assembly pollution and caused, all significantly limits the sustainable development of current fertilizer industry.More need
It should be noted that with the development of industry, the content of the heavy metal element in soil is higher and higher, but existing fertilizer for
Heavy metal effectively can not be enriched with and remove, so that heavy metal accumulation is in crops, for the health of eater
In the presence of greatly hidden danger.
Summary of the invention
The object of the present invention is to provide a kind of soil modification clay mineral and preparation method thereof, the soil modification clay minerals
Heavy metal that can effectively in Enriching soil, at the same the preparation method have the advantages that process simply and operate it is convenient.
To achieve the goals above, the present invention provides a kind of preparation methods of soil modification clay mineral, comprising:
1) palygorskite PAL is calcined to obtain PAL powder；
2) PAL powder, surfactant, water are mixed, sulfur-containing amino acid, EDTA, polyacrylic acid is then added and is surpassed
Acoustic shock swings to obtain modified system；
3) methylcellulose is added in modified system and is coated, then filtered, is dry, is broken glutinous to obtain soil modification
Native mineral.
The present invention also provides a kind of soil modification clay mineral, which passes through above-mentioned preparation side
Method is prepared.
In the above-mentioned technical solutions, the present invention first calcines palygorskite PAL, then in the effect of surfactant
It is lower by sulfur-containing amino acid, EDTA, polyacrylic acid scion grafting on PAL powder, finally methylcellulose coats PAL powder
And then the group on its surface is protected, once soil modification clay mineral enters in soil, Methyl cellulose under the action of microorganism
Element decomposes, so that the surface group of PAL powder and soil come into full contact with and then sedimentation heavy metal can be complexed, to effectively reach
To the effect for removing removing heavy metals.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of preparation methods of soil modification clay mineral, comprising:
1) palygorskite PAL is calcined to obtain PAL powder；
2) PAL powder, surfactant, water are mixed, sulfur-containing amino acid, EDTA, polyacrylic acid is then added and is surpassed
Acoustic shock swings to obtain modified system；
3) methylcellulose is added in modified system and is coated, then filtered, is dry, is broken glutinous to obtain soil modification
Native mineral.
In step 1) of the invention, the actual conditions of calcining can select in a wide range, but in order to further
Improve soil modification clay mineral and go the effects of removing heavy metals, it is preferable that in step 1), calcining are as follows: first from 15-35 DEG C with
The rate of 0.8-1.2 DEG C/min is warming up to 200-230 DEG C and keeps the temperature 1-2h, is then warming up to the rate of 1.5-1.8 DEG C/min
450-480 DEG C and 1-2h is kept the temperature, last natural cooling.
In step 2) of the invention, the dosage of each material can select in a wide range, but in order to further mention
High soil modification clay mineral goes the effect of removing heavy metals, it is preferable that in step 2, PAL powder, water, contains surfactant
Sulphur amino acid, EDTA, polyacrylic acid weight ratio be 20:0.3-0.5:100-200:2-4:0.8-1.5:1.5-2.
In step 2) of the invention, the type of surfactant can select in a wide range, but in order into one
Step improves the effect that soil modification clay mineral removes removing heavy metals, it is preferable that in step 2, surfactant is selected from dodecane
At least one of base benzene sulfonic acid sodium salt, myristyl benzene sulfonic acid sodium salt, lauryl sodium sulfate, sodium tetradecyl sulfate.
In step 2) of the invention, the type of sulfur-containing amino acid can select in a wide range, but in order into one
Step improves the effect that soil modification clay mineral removes removing heavy metals, it is preferable that in step 2, sulfur-containing amino acid is selected from egg ammonia
At least one of acid, cystine and cysteine.
In step 2) of the invention, the mixed time can select in a wide range, but in order to further increase
Soil modification clay mineral goes the effect of removing heavy metals, it is preferable that in step 2, the mixed time is 20-30min.
In step 2) of the invention, the ultrasonic vibration full time can select in a wide range, but in order into one
Step improves the effect that soil modification clay mineral removes removing heavy metals, it is preferable that in step 2, the ultrasonic vibration full time is
40-60min。
In step 3) of the invention, the dosage of each material can select in a wide range, but in order to further mention
High soil modification clay mineral goes the effect of removing heavy metals, it is preferable that in step 3), the weight of modified system, methylcellulose
Amount is than being 10:0.2-0.4.
In step 3) of the invention, the condition of cladding can select in a wide range, but in order to further increase
Soil modification clay mineral goes the effect of removing heavy metals, it is preferable that in step 3), cladding meets the following conditions: temperature of plate
It is 15-35 DEG C, the cladding time is 20-40min.
The present invention also provides a kind of soil modification clay mineral, which passes through above-mentioned preparation side
Method is prepared.
The present invention will be described in detail by way of examples below.
Embodiment 1
1) palygorskite PAL is calcined (be first warming up to 220 DEG C from 25 DEG C of rates with 1 DEG C/min and keep the temperature 1.5h, then with
The rate of 1.6 DEG C/min is warming up to 460 DEG C and keeps the temperature 1.5h, last natural cooling) to obtain PAL powder；
2) PAL powder, surfactant (neopelex), water are subjected to mixing 25min, sulfur-bearing amino is then added
Sour (methionine), EDTA, polyacrylic acid carry out ultrasonic vibration 50min and obtain modified system；Wherein, PAL powder, surface-active
Agent, water, sulfur-containing amino acid, EDTA, polyacrylic acid weight ratio be 20:0.4:150:3:1.2:1.8；
3) methylcellulose is added in modified system to and coated (temperature of plate is 25 DEG C, and the cladding time is 30min；Change
Property system, the weight ratio of methylcellulose be 10:0.3), then filter, be dry, is broken to obtain soil modification clay mineral
A1。
Embodiment 2
1) palygorskite PAL is calcined (be first warming up to 200 DEG C from 15 DEG C of rates with 1.2 DEG C/min and keep the temperature 2h, then with
The rate of 1.5 DEG C/min is warming up to 450 DEG C and keeps the temperature 2h, last natural cooling) to obtain PAL powder；
2) PAL powder, surfactant (myristyl benzene sulfonic acid sodium salt), water are subjected to mixing 20min, sulfur-bearing amino is then added
Sour (cystine), EDTA, polyacrylic acid carry out ultrasonic vibration 40min and obtain modified system；Wherein, PAL powder, surface-active
Agent, water, sulfur-containing amino acid, EDTA, polyacrylic acid weight ratio be 20:0.3:100:2:0.8:1.5；
3) methylcellulose is added in modified system to and coated (temperature of plate is 15 DEG C, and the cladding time is 40min；Change
Property system, the weight ratio of methylcellulose be 10:0.2), then filter, be dry, is broken to obtain soil modification clay mineral
A2。
Embodiment 3
1) palygorskite PAL is calcined (be first warming up to 230 DEG C from 35 DEG C of rates with 0.8 DEG C/min and keep the temperature 1h, then with
The rate of 1.8 DEG C/min is warming up to 480 DEG C and keeps the temperature 1h, last natural cooling) to obtain PAL powder；
2) PAL powder, surfactant (sodium tetradecyl sulfate), water are subjected to mixing 30min, sulfur-containing amino acid is then added
(cysteine), EDTA, polyacrylic acid carry out ultrasonic vibration 60min and obtain modified system；Wherein, PAL powder, surface-active
Agent, water, sulfur-containing amino acid, EDTA, polyacrylic acid weight ratio be 20:0.5:200:4:1.5:2；
3) methylcellulose is added in modified system to and coated (temperature of plate is 35 DEG C, and the cladding time is 20min；Change
Property system, the weight ratio of methylcellulose be 10:0.4), then filter, be dry, is broken to obtain soil modification clay mineral
A3。
Comparative example 1
It carries out that soil modification clay mineral B1 is made according to the method for embodiment 1, unlike, sulfur-bearing ammonia is not used in step 2
Base acid, EDTA, polyacrylic acid.
Comparative example 2
It carries out that soil modification clay mineral B2 is made according to the method for embodiment 1, unlike, it is fine that methyl is not used in step 3)
Dimension element.
Application examples 1
On June 18th, 2017 is by above-mentioned soil modification clay mineral and applies spill in soil (soil modification clay after the fertilizers are mixed
The amount of spilling of applying of mineral per acre is 50kg), pakchoi (Brassica rapa L) then is sowed, passes through GB 2762-2005 on August 20th, 2017
Total mercury content in pakchoi is detected, is specifically shown in Table 1；Soil modification clay mineral is not used in control group.
Table 1
| Soil modification clay mineral | Total mercury content (mg/kg) |
| A1 | 0.004 |
| A2 | 0.003 |
| A3 | 0.005 |
| B1 | 0.009 |
| B2 | 0.008 |
| Control group | 0.010 |
The preferred embodiment of the present invention has been described above in detail, still, the tool during present invention is not limited to the embodiments described above
Body details within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, these letters
Monotropic type all belongs to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of preparation method of soil modification clay mineral characterized by comprising
1) palygorskite PAL is calcined to obtain PAL powder；
2) the PAL powder, surfactant, water are mixed, then be added sulfur-containing amino acid, EDTA, polyacrylic acid into
Row ultrasonic vibration obtains modified system；
3) methylcellulose is added in the modified system and is coated, then filtered, is dry, is broken to obtain the soil
Earth modified clay mineral.
2. preparation method according to claim 1, wherein in step 1), the calcining are as follows: first from 15-35 DEG C with
The rate of 0.8-1.2 DEG C/min is warming up to 200-230 DEG C and keeps the temperature 1-2h, is then warming up to the rate of 1.5-1.8 DEG C/min
450-480 DEG C and 1-2h is kept the temperature, last natural cooling.
3. preparation method according to claim 1, wherein in step 2, the PAL powder, surfactant, water,
Sulfur-containing amino acid, EDTA, polyacrylic acid weight ratio be 20:0.3-0.5:100-200:2-4:0.8-1.5:1.5-2.
4. preparation method according to claim 1, wherein in step 2, the surfactant is selected from dodecyl
At least one of benzene sulfonic acid sodium salt, myristyl benzene sulfonic acid sodium salt, lauryl sodium sulfate, sodium tetradecyl sulfate.
5. preparation method according to claim 1, wherein in step 2, the sulfur-containing amino acid is selected from methionine, Guang
At least one of propylhomoserin and cysteine.
6. preparation method according to claim 1, wherein in step 2, the mixed time is 20-30min.
7. preparation method according to claim 1, wherein in step 2, the ultrasonic vibration full time is 40-
60min。
8. preparation method according to claim 1, wherein in step 3), the weight of the modified system, methylcellulose
Amount is than being 10:0.2-0.4.
9. preparation method according to claim 1, wherein in step 3), the cladding meets the following conditions: cladding temperature
Degree is 15-35 DEG C, and the cladding time is 20-40min.
10. a kind of soil modification clay mineral, which is characterized in that the soil modification clay mineral passes through in claim 1-9
Preparation method described in any one is prepared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811078100.0A CN109054856A (en) | 2018-09-16 | 2018-09-16 | Soil modification clay mineral and preparation method thereof |
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Cited By (3)
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|---|---|---|---|---|
| CN109824426A (en) * | 2019-01-25 | 2019-05-31 | 兰州大学 | A kind of slow release fertilizer improving heavy metal pollution of soil |
| CN109824427A (en) * | 2019-01-25 | 2019-05-31 | 兰州大学 | A kind of Slow-release organic fertilizer improving heavy metal pollution of soil |
| CN111592892A (en) * | 2020-04-28 | 2020-08-28 | 山东科技大学 | Method for preparing high-performance PAL material by using non-metallic mineral palygorskite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109824427A (en) * | 2019-01-25 | 2019-05-31 | 兰州大学 | A kind of Slow-release organic fertilizer improving heavy metal pollution of soil |
| CN111592892A (en) * | 2020-04-28 | 2020-08-28 | 山东科技大学 | Method for preparing high-performance PAL material by using non-metallic mineral palygorskite |
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