CN114702360A - Soil heavy metal restoration agent, and preparation method and application thereof - Google Patents
Soil heavy metal restoration agent, and preparation method and application thereof Download PDFInfo
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- CN114702360A CN114702360A CN202210445645.0A CN202210445645A CN114702360A CN 114702360 A CN114702360 A CN 114702360A CN 202210445645 A CN202210445645 A CN 202210445645A CN 114702360 A CN114702360 A CN 114702360A
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- 239000002689 soil Substances 0.000 title claims abstract description 80
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229960000892 attapulgite Drugs 0.000 claims abstract description 21
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 21
- 239000003895 organic fertilizer Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 9
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 9
- 239000006012 monoammonium phosphate Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009264 composting Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000010902 straw Substances 0.000 claims abstract description 8
- 239000002028 Biomass Substances 0.000 claims abstract description 7
- 210000003608 fece Anatomy 0.000 claims abstract description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 7
- 239000010871 livestock manure Substances 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 238000013270 controlled release Methods 0.000 abstract 1
- 230000035558 fertility Effects 0.000 abstract 1
- 238000005067 remediation Methods 0.000 description 31
- 229910052785 arsenic Inorganic materials 0.000 description 7
- 229910052793 cadmium Inorganic materials 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000498 ball milling Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000003971 tillage Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 229930002875 chlorophyll Natural products 0.000 description 3
- 235000019804 chlorophyll Nutrition 0.000 description 3
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 3
- 235000010149 Brassica rapa subsp chinensis Nutrition 0.000 description 2
- 235000000536 Brassica rapa subsp pekinensis Nutrition 0.000 description 2
- 241000499436 Brassica rapa subsp. pekinensis Species 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 240000004928 Paspalum scrobiculatum Species 0.000 description 1
- 235000003675 Paspalum scrobiculatum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a soil heavy metal restoration agent and a preparation method and application thereof, wherein firstly, attapulgite is placed in a muffle furnace in the air atmosphere, pretreated at a certain heating rate, cooled and ground, and then screened by a screen shaker and sealed for storage; adding corncobs and deionized water into a hydrothermal reaction kettle, and reacting at a certain temperature to obtain biochar; uniformly mixing straws, Shanghai green leaves, fresh pig manure and bran according to a certain proportion, and composting at room temperature and in the air atmosphere to prepare an organic fertilizer; and uniformly mixing the calcined attapulgite, the organic fertilizer, the biochar, the red mud and the monoammonium phosphate to obtain the soil heavy metal restoration agent. The repairing agent utilizes a controlled release technology, removes overproof heavy metals in soil accurately for a long time, is combined with a biomass fertilizer, and enhances the soil fertility while repairing the heavy metals in the soil.
Description
Technical Field
The invention relates to the technical field of agricultural soil remediation, in particular to a soil heavy metal remediation agent and a preparation method and application thereof.
Background
Soil is the material basis on which animals, plants and microorganisms live and an important medium for obtaining nutrients, and is an important resource and life line for the development of human society. With human activities such as pesticide and fertilizer abuse, sewage irrigation, chemical manufacturing, mining, metal plating, and improper disposal of industrial residues, the soil is subject to severe heavy metal contamination. And with the development of world economy and urbanization, the discharge amount of heavy metals is increased year by year, so that the heavy metal pollution events of soil are frequent, the control of the heavy metal pollution of the soil and the recovery of the sustainable development of the soil environment become hot spots and difficult problems to be solved urgently in the world.
The remediation of the heavy metal in the soil is realized by adding a remediation agent into the soil to change the form of the heavy metal in the soil, namely, the remediation agent is used for passivating the heavy metal, so that the effectiveness of the heavy metal in the soil is reduced, the harm of the heavy metal to the environment and human is reduced, and finally the purpose of safe utilization of the heavy metal contaminated soil is achieved. The biochar has special physical and chemical properties, such as the advantages of multiple functional groups, large specific surface area, strong ion exchange capacity and the like, and is widely applied to remediation of heavy metal pollution of soil. The compost is used as an organic fertilizer treatment process, the composted organic fertilizer can reduce the content of effective heavy metals in the polluted soil, and the composted organic fertilizer is used as a high-efficiency heavy metal modifier. At present, few researches on the passivation of heavy metals in soil by combining compost and biochar are carried out. Therefore, the application of biochar and composting techniques to remediation of heavy metal contaminated soils remains a major challenge.
Disclosure of Invention
The invention provides a soil heavy metal restoration agent, a preparation method and application thereof.
A preparation method of a soil heavy metal restoration agent comprises the following steps:
step S1: firstly, putting attapulgite in a muffle furnace in an air atmosphere, raising the temperature to 350 ℃ at a certain heating rate for pretreatment for 2-3 h, raising the temperature to 800 ℃ at the same heating rate for preservation for 4-5 h, grinding after cooling, screening by a 100-mesh 200-mesh sieve shaker, and then sealing for storage;
step S2: adding corncobs into a hydrothermal reaction kettle, adding deionized water, reacting for 8-10 h at the temperature of 220-260 ℃, filtering, washing, drying, ball-milling, and screening 100-200-mesh particles to obtain biochar;
step S3: straw, Shanghai green leaves, fresh pig manure and bran are mixed according to the mass ratio of 40-50: 10-20: 20-30: 5-10, and preparing the organic fertilizer rich in biomass through composting for 25-35 days at room temperature in an air atmosphere;
step S4: and uniformly mixing the calcined attapulgite, the organic fertilizer, the biochar, the red mud and the monoammonium phosphate to obtain the soil heavy metal restoration agent.
Preferably, in step S1 of the present invention, 40-80 g of attapulgite with a particle size of 100-200 meshes is taken.
Preferably, the temperature increase rate in step S1 of the present invention is 5 to 10 deg.C/min.
Preferably, in step S2 of the present invention, 5-10 g of corn cob with a particle size of 10-20 meshes is taken.
Preferably, the volume number of the deionized water in step S2 of the present invention is 50-70 ml,
preferably, in step S3 of the present invention, the rice grass is pulverized to 3-5 mm, the Shanghai green leaf is pulverized to 3-5 mm, and the bran has a particle size of 60-80 mesh.
Preferably, in step S4 of the present invention, the weight percentage of the attapulgite is 60-70 wt%, the weight percentage of the organic fertilizer is 10-20 wt%, the weight percentage of the biochar is 5-10 wt%, the weight percentage of the red mud is 5-10 wt%, and the weight percentage of the monoammonium phosphate is 2-6 wt%.
The soil heavy metal restoration agent prepared by the preparation method is adopted.
The soil heavy metal restoration agent disclosed by the invention is applied to soil restoration.
The soil heavy metal remediation agent is uniformly scattered on the surface of heavy metal contaminated soil according to the amount of 100-150 Kg/mu, then is subjected to rotary tillage, and the contents of Zn, Cu, Cd and As in the soil are respectively reduced to 0.10-1.12 mg/Kg, 0.03-0.05 mg/Kg, 0.02-0.04 mg/Kg and 0.03-0.05 mg/Kg measured after 10-15 days.
Drawings
FIG. 1 is a graph showing the comparison of heavy metal content before and after soil remediation by a soil remediation agent.
FIG. 2 is a graph showing the comparison of the growth of Shanghai Qing before and after soil remediation by the soil remediation agent prepared in the method of example 2.
FIG. 3A is a graph showing the comparison of the diameters of leaf crowns of Shanghai Qinghai before and after soil remediation by the soil remediation agent prepared by the method of example 2.
FIG. 3B is a graph showing the comparison of the plant height of Shanghai Qingqing before and after soil remediation by the soil remediation agent prepared according to the method of example 2.
FIG. 3C is a comparison of the soil remediation agent obtained by the method of example 2 before and after soil remediation, and before and after the average weight of the Chinese cabbage.
FIG. 3D is a graph comparing the chlorophyll content of Shanghai green before and after soil remediation by the soil remediation agent prepared by the method of example 2.
FIG. 3E is a graph comparing the green and yellow leaf rate of Shanghai before and after soil remediation by the soil remediation agent prepared by the method of example 2.
FIG. 3F is a graph comparing the white diameter of the Chinese cabbage before and after soil remediation by the soil remediation agent prepared by the method of example 2.
The specific implementation mode is as follows:
a preparation method of a soil heavy metal restoration agent comprises the following steps:
step S1: firstly, under the air atmosphere, 40-80 g of attapulgite (200 meshes in 100 meshes) is placed in a muffle furnace, the temperature is raised to 350 ℃ in 300-3 ℃ at the temperature raising rate of 5-10 ℃/min for pretreatment for 2-3 h, then the temperature is raised to 800 ℃ in 600 meshes at the same temperature raising rate for keeping for 4-5 h, after cooling, grinding is carried out, and after screening, sealing and storing are carried out by a sieve shaker with 200 meshes in 100 meshes;
step S2: adding 5-10 g of corncobs (10-20 meshes) into a hydrothermal reaction kettle, adding 50-70 ml of deionized water, reacting for 8-10 h at the temperature of 260 ℃ of 220-;
step S3: straw (crushed to 3-5 mm), Shanghai green leaf (crushed to 3-5 mm), fresh pig manure and bran (60-80 meshes) are mixed according to the mass ratio of 40-50: 10-20: 20-30: 5-10, and preparing the organic fertilizer rich in biomass through composting for 25-35 days at room temperature in an air atmosphere;
step S4: uniformly mixing 60-70 wt% of calcined attapulgite, 10-20 wt% of organic fertilizer, 5-10 wt% of biochar, 5-10 wt% of red mud and 2-6 wt% of monoammonium phosphate to obtain the soil heavy metal restoration agent.
Example 1:
step S1: firstly, under the air atmosphere, 40 g of attapulgite with the grain diameter of 100 meshes is placed in a muffle furnace, the temperature is increased to 300 ℃ at the heating rate of 5 ℃/min for pretreatment for 2 h, then the temperature is increased to 600 ℃ at the same heating rate for keeping for 4 h, after cooling, grinding is carried out, and after screening by a sieve shaker with 100 meshes, sealing and storing are carried out;
step S2: adding 5 g of corncobs with the particle size of 10 meshes into a hydrothermal reaction kettle, adding 50 ml of deionized water, reacting for 8 hours at 220 ℃, filtering, washing, drying, ball-milling, and screening particles with 100 meshes to obtain biochar;
step S3: straw crushed to 3 mm, Shanghai green leaves crushed to 3 mm, fresh pig manure and bran with the particle size of 60 meshes are mixed according to the mass ratio of 40: 10: 20: 5, and preparing the organic fertilizer rich in biomass through composting for 25 days at room temperature in an air atmosphere;
step S4: uniformly mixing calcined attapulgite (60 wt%), organic fertilizer (20 wt%), biochar (10 wt%), red mud (5 wt%) and monoammonium phosphate (5 wt%) to obtain the soil heavy metal restoration agent.
And (4) uniformly scattering the soil heavy metal restoration agent obtained in the step (S4) on the surface of the heavy metal polluted soil according to the amount of 100 Kg/mu, then carrying out rotary tillage, and measuring the content of Zn, Cu, Cd and As in the soil to be respectively reduced to 0.12 mg/Kg, 0.05 mg/Kg, 0.03 mg/Kg and 0.04 mg/Kg after 10 days.
As shown in figure 1, the soil remediation agent obtained by the preparation method of example 1 is used for the heavy metal content before and after soil remediation, and the obvious effect on heavy metals Zn, Cu, Cd and As in soil can be seen.
Example 2:
step S1: firstly, 60 g of attapulgite with the particle size of 150 meshes is placed in a muffle furnace in the air atmosphere, the temperature is increased to 325 ℃ at the heating rate of 7 ℃/min for pretreatment for 2.5 h, then the temperature is increased to 700 ℃ at the same heating rate for preservation for 4.5 h, the attapulgite is ground after cooling, and the attapulgite is sealed and stored after being screened by a sieve shaker with 150 meshes;
step S2: adding 7 g of corncobs with the particle size of 15 meshes into a hydrothermal reaction kettle, adding 60 ml of deionized water, reacting for 9 hours at 240 ℃, filtering, washing, drying, ball-milling, and screening 150-mesh particles to obtain biochar;
step S3: straw crushed to 4 mm, Shanghai green leaf () fresh pig manure crushed to 4 mm, and bran with the grain size of 70 meshes are mixed according to the mass ratio of 40: 15: 25: 7, and preparing the organic fertilizer rich in biomass through composting for 30 days at room temperature and in the air atmosphere;
step S4: uniformly mixing calcined attapulgite (65 wt%), organic fertilizer (15 wt%), biochar (8 wt%), red mud (7 wt%) and monoammonium phosphate (5 wt%) to obtain a soil heavy metal restoration agent;
and (4) uniformly scattering the soil heavy metal restoration agent obtained in the step (S4) on the surface of the heavy metal polluted soil according to the amount of 130 Kg/mu, then carrying out rotary tillage, and measuring the content of Zn, Cu, Cd and As in the soil to be respectively reduced to 0.10 mg/Kg, 0.03 mg/Kg, 0.02 mg/Kg and 0.03 mg/Kg after 13 days. And then planting the Shanghai Qingn in the restored soil, and measuring the fresh weight, chlorophyll content, plant height and root length of the planted Shanghai Qingn after 30 days.
As shown in figure 1, the soil remediation agent obtained by the preparation method of example 2 is used for the heavy metal content before and after soil remediation, and the obvious effect on heavy metals Zn, Cu, Cd and As in soil can be seen.
As shown in FIG. 2, the growth of Shanghai Qing is obviously improved after the soil is repaired by the soil repairing agent obtained by the preparation method of example 2.
As shown in the figure 3A, the diameter of the leaf crown of Shanghai Qing is compared before and after, the height of the Shanghai Qing is compared before and after, the average weight of the 3C Shanghai Qing is compared before and after, the chlorophyll content of the 3D Shanghai Qing is compared before and after, the yellow leaf rate of the 3E Shanghai Qing is compared before and after, and the white diameter of the 3F Shanghai Qing is compared before and after, the soil remediation agent prepared by the method has an obvious effect on plant growth.
Example 3:
step S1: firstly, 80 g of attapulgite with the particle size of 200 meshes is placed in a muffle furnace in the air atmosphere, the temperature is raised to 350 ℃ at the heating rate of 10 ℃/min for pretreatment for 3 h, then the temperature is raised to 800 ℃ at the same heating rate for keeping for 5 h, grinding is carried out after cooling, and the attapulgite is sealed and stored after being screened by a sieve shaker with 200 meshes;
step S3: adding 10 g of corncobs with the particle size of 20 meshes into a hydrothermal reaction kettle, adding 70 ml of deionized water, reacting for 10 hours at 260 ℃, filtering, washing, drying, ball-milling, and screening particles with the particle size of 200 meshes to obtain biochar;
step S3: straw crushed to 5 mm, Shanghai green leaves crushed to 5 mm, fresh pig manure and bran with the particle size of 80 meshes are mixed according to the mass ratio of 40: 20: 30: 10, and preparing the organic fertilizer rich in biomass through composting for 35 days at room temperature and in the air atmosphere;
step S4: uniformly mixing calcined attapulgite (70 wt%), organic fertilizer (10 wt%), biochar (5 wt%), red mud (10 wt%) and monoammonium phosphate (5 wt%) to obtain a soil heavy metal restoration agent;
and (4) uniformly scattering the soil heavy metal restoration agent obtained in the step (S4) on the surface of the heavy metal polluted soil according to the amount of 150 Kg/mu, then carrying out rotary tillage, and measuring the content of Zn, Cu, Cd and As in the soil to be respectively reduced to 0.12 mg/Kg, 0.05 mg/Kg, 0.03 mg/Kg and 0.05 mg/Kg after 15 days. As shown in figure 1, the soil remediation agent obtained by the preparation method of example 3 is used for the heavy metal content before and after soil remediation, and the obvious effect on heavy metals Zn, Cu, Cd and As in soil can be seen.
Claims (9)
1. The preparation method of the soil heavy metal restoration agent is characterized by comprising the following steps:
step S1: firstly, putting attapulgite in a muffle furnace in an air atmosphere, raising the temperature to 350 ℃ at a certain heating rate for pretreatment for 2-3 h, raising the temperature to 800 ℃ at the same heating rate for preservation for 4-5 h, grinding after cooling, screening by a 100-mesh 200-mesh sieve shaker, and then sealing for storage;
step S2: adding corncobs into a hydrothermal reaction kettle, adding deionized water, reacting for 8-10 h at the temperature of 260 ℃ after 220-;
step S3: straw, Shanghai green leaves, fresh pig manure and bran are mixed according to the mass ratio of 40-50: 10-20: 20-30: 5-10, and preparing the organic fertilizer rich in biomass through composting for 25-35 days at room temperature in an air atmosphere;
step S4: and uniformly mixing the calcined attapulgite, the organic fertilizer, the biochar, the red mud and the monoammonium phosphate to obtain the soil heavy metal restoration agent.
2. The method as claimed in claim 1, wherein in the step S1, 40-80 g of attapulgite with a particle size of 100-200 meshes is taken.
3. The method according to claim 1, wherein the temperature increase rate in the step S1 is 5 to 10 ℃/min.
4. The method according to claim 1, wherein 5 to 10 g of corncob having a particle size of 10 to 20 mesh is taken in the step S2.
5. The method according to claim 1, wherein the volume of the deionized water in the step S2 is 50 to 70 ml.
6. The method according to claim 1, wherein in step S3, the straw is pulverized to 3-5 mm, the green leaves of shanghai are pulverized to 3-5 mm, and the bran has a particle size of 60-80 mesh.
7. The method according to claim 1, wherein the weight percentage of the attapulgite in the step S4 is 60-70 wt%, the weight percentage of the organic fertilizer is 10-20 wt%, the weight percentage of the biochar is 5-10 wt%, the weight percentage of the red mud is 5-10 wt%, and the weight percentage of the monoammonium phosphate is 2-6 wt%.
8. A soil heavy metal restoration agent, characterized by being prepared by the preparation method of any one of claims 1 to 7.
9. The soil heavy metal restoration agent according to claim 8 for use in soil restoration.
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| CN115041168A (en) * | 2022-07-26 | 2022-09-13 | 重庆理工大学 | Red mud-based photo-Fenton catalyst for water treatment and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788960A (en) * | 2014-03-05 | 2014-05-14 | 中国科学院合肥物质科学研究院 | Functional fertilizer and repair agents for repairing soil heavy metal |
| CN108889773A (en) * | 2018-05-29 | 2018-11-27 | 深圳文科园林股份有限公司 | A kind of cadmium pollution mine soil renovation agent and preparation and application method |
| CN110947364A (en) * | 2019-12-12 | 2020-04-03 | 甘肃农业大学 | Heavy metal contaminated soil remediation agent and application thereof |
| AU2020102561A4 (en) * | 2020-10-01 | 2020-11-19 | Zhejiang Academy Of Agricultural Science | An Amendment Applicable to Acid Soil and Its Application Method and Process |
| CN112275788A (en) * | 2020-09-27 | 2021-01-29 | 东华大学 | Method for solidifying and stabilizing heavy metal ions in soil by using sludge-based biochar |
| CN113248321A (en) * | 2021-05-19 | 2021-08-13 | 东华大学 | Preparation method of light-operated slow-release fulvic acid fertilizer capable of repairing heavy metals |
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788960A (en) * | 2014-03-05 | 2014-05-14 | 中国科学院合肥物质科学研究院 | Functional fertilizer and repair agents for repairing soil heavy metal |
| CN108889773A (en) * | 2018-05-29 | 2018-11-27 | 深圳文科园林股份有限公司 | A kind of cadmium pollution mine soil renovation agent and preparation and application method |
| CN110947364A (en) * | 2019-12-12 | 2020-04-03 | 甘肃农业大学 | Heavy metal contaminated soil remediation agent and application thereof |
| CN112275788A (en) * | 2020-09-27 | 2021-01-29 | 东华大学 | Method for solidifying and stabilizing heavy metal ions in soil by using sludge-based biochar |
| AU2020102561A4 (en) * | 2020-10-01 | 2020-11-19 | Zhejiang Academy Of Agricultural Science | An Amendment Applicable to Acid Soil and Its Application Method and Process |
| CN113248321A (en) * | 2021-05-19 | 2021-08-13 | 东华大学 | Preparation method of light-operated slow-release fulvic acid fertilizer capable of repairing heavy metals |
Non-Patent Citations (3)
| Title |
|---|
| 上海环境科学编辑部: "《上海环境科学集》", 31 May 2020, 上海科学技术出版社 * |
| 杨文玺: "《马铃薯生长发育与环境》", 30 September 2015, 武汉大学出版社 * |
| 贵州中医药大学编: "《贵州中药材种植技术300问》", 29 February 2020, 贵州科技出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041168A (en) * | 2022-07-26 | 2022-09-13 | 重庆理工大学 | Red mud-based photo-Fenton catalyst for water treatment and preparation method and application thereof |
| CN115041168B (en) * | 2022-07-26 | 2024-04-02 | 重庆理工大学 | Red mud-based photo-Fenton catalyst for water treatment and preparation method and application thereof |
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