CN110964532A - Humic acid modified fly ash granular soil and preparation method thereof - Google Patents
Humic acid modified fly ash granular soil and preparation method thereof Download PDFInfo
- Publication number
- CN110964532A CN110964532A CN201811122407.6A CN201811122407A CN110964532A CN 110964532 A CN110964532 A CN 110964532A CN 201811122407 A CN201811122407 A CN 201811122407A CN 110964532 A CN110964532 A CN 110964532A
- Authority
- CN
- China
- Prior art keywords
- water
- humic acid
- fly ash
- soil
- granular soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 99
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000004021 humic acid Substances 0.000 title claims abstract description 54
- 239000010881 fly ash Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 229920000642 polymer Polymers 0.000 claims abstract description 46
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 20
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 20
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 20
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 16
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 14
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 14
- 230000003179 granulation Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 14
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 14
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 235000013619 trace mineral Nutrition 0.000 claims description 2
- 239000011573 trace mineral Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 5
- 235000015097 nutrients Nutrition 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000005411 Van der Waals force Methods 0.000 abstract description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 238000005342 ion exchange Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 230000035558 fertility Effects 0.000 abstract description 2
- 240000008436 Ipomoea aquatica Species 0.000 description 12
- 235000019004 Ipomoea aquatica Nutrition 0.000 description 11
- 206010016807 Fluid retention Diseases 0.000 description 10
- 241000196324 Embryophyta Species 0.000 description 8
- 230000012010 growth Effects 0.000 description 8
- 239000003337 fertilizer Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 235000001601 Sabal palmetto Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 230000015784 hyperosmotic salinity response Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000003715 nutritional status Nutrition 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to the field of granular soil, in particular to humic acid modified fly ash granular soil and a preparation method thereof. According to the invention, humic acid and carboxymethyl cellulose are subjected to a cross-linking reaction to generate a three-dimensional reticular high-molecular polymer, hydrophilic groups such as carboxyl and hydroxyl on the surface of the molecule are ionized after meeting water and are combined with water molecules to form a polar hydrogen bond, the formed hydrogen bond can enhance the water absorption performance of the molecule, and the hydrophilic groups can also enhance the adsorption effect on nutrients through electrostatic attraction, van der waals force, ion exchange and the like; the high molecular polymer is coated and granulated by the fly ash to prepare the granular soil, and when the soil moisture is consumed by crops to cause the suction force of the soil matrix potential to rise, the granular soil can slowly release the stored moisture and nutrients into the soil for the crops to absorb and utilize, thereby playing the roles of drought resistance, moisture conservation and fertility improvement.
Description
Technical Field
The invention relates to the field of granular soil, in particular to humic acid modified fly ash granular soil and a preparation method thereof.
Background
China is a country lacking in water resources, arid and semiarid regions account for 47% of the total area of the national soil, and the water resources become one of the important factors for restricting the development of national economy. Particularly, as a big agricultural country in China, plants have higher demand for water resources, but at present, water-retaining agents are mostly used for saving water, retaining water and improving soil, and are gradually applied to agriculture, forestry and gardening. However, the existing water-retaining agents have high production cost and are not beneficial to large-area popularization and use, and meanwhile, the water-retaining agents on the market have weak capability of repeatedly diluting water, short effect duration after application and no salt tolerance, and adverse effects such as soil hardening, pH value rising and the like can be caused after long-term use, so that the actual requirements are difficult to meet. Meanwhile, the granular soil is an inorganic matrix, so that the requirement of plant growth on nutrition cannot be met, the water retention of the existing granular soil is not strong enough, the water loss is fast during outdoor planting, and the popularization effect is poor. Therefore, it is a technical problem in the art to provide a granular soil with low cost and good water and fertilizer retention effects.
Disclosure of Invention
Aiming at the technical problems, the invention provides humic acid modified fly ash granular soil and a preparation method thereof.
The invention adopts the following technical scheme:
the humic acid modified fly ash granular soil comprises the following raw material components of fly ash, polyvinyl alcohol, modified polymer and water in a weight ratio of 100-200:1-20:50-80:40-60, wherein the modified polymer is prepared from the following raw materials in parts by weight: 0.5-5 parts of humic acid, 1-10 parts of carboxymethyl cellulose, 5-10 parts of acrylamide, 0.01-0.5 part of N, N-methylene bisacrylamide, 0.1-0.5 part of potassium persulfate and 10-30 parts of water.
The invention also provides a preparation method of the humic acid modified fly ash granular soil, which comprises the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5-1h, adding potassium persulfate and N, N-methylene-bisacrylamide, stirring for 2.5-3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4-5h under the condition of water bath, cooling to room temperature, repeatedly washing with distilled water, and drying at 50-70 ℃ to constant weight to obtain a modified polymer;
(3) and (3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, and drying at constant temperature to obtain granular soil.
Further, the temperature of the water bath in the step (2) is 60-65 ℃.
Further, the rotation speed of the granulator in the step (3) is 1000-.
Further, the drying temperature in the step (3) is 60-70 ℃.
The humic acid modified fly ash granular soil and the preparation method thereof have the following beneficial effects:
(1) according to the invention, humic acid and carboxymethyl cellulose are subjected to a cross-linking reaction to generate a three-dimensional reticular high-molecular polymer, hydrophilic groups such as carboxyl and hydroxyl on the surface of the molecule are ionized after meeting water and are combined with water molecules to form a polar hydrogen bond, the formed hydrogen bond can enhance the water absorption performance of the molecule, and the hydrophilic groups can also enhance the adsorption effect on nutrients through electrostatic attraction, van der waals force, ion exchange and the like; and the humic acid has the characteristics of promoting the growth of plants, increasing the stress resistance of crops, improving the nutritional status of the plants and the like, thereby effectively improving the water retention and fertilizer retention capacity of the granular soil.
(2) The modified polymer prepared by the cross-linking reaction of humic acid and carboxymethyl cellulose is granulated with fly ash to generate granular soil, and when the soil moisture is consumed by crops to cause the soil matrix potential suction force to rise, the granular soil can slowly release the stored moisture and nutrients into the soil for the crops to absorb and utilize, thereby playing the roles of drought resistance, moisture conservation and fertility improvement.
(3) The invention takes the fly ash as the raw material to prepare the granular soil, provides an effective utilization way for solid waste, can relieve the pollution problem of the solid waste, and simultaneously, the use of the humic acid and the carboxymethyl cellulose is beneficial to solving the problems of poor water and fertilizer retention performance, single and fixed nutrient content and the like of the existing granular soil; and the humic acid has wide source and low price, so that the raw materials of the granular soil are easy to obtain, and the production cost of the granular soil is favorably reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a preparation process of humic acid modified fly ash granular soil.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The humic acid modified fly ash granular soil comprises the following raw material components of fly ash, polyvinyl alcohol, modified polymer and water in a weight ratio of 100-200:1-20:50-80:40-60, wherein the modified polymer is prepared from the following raw materials in parts by weight: 0.5-5 parts of humic acid, 1-10 parts of carboxymethyl cellulose, 5-10 parts of acrylamide, 0.01-0.5 part of N, N-methylene bisacrylamide, 0.1-0.5 part of potassium persulfate and 10-30 parts of water.
The invention takes fly ash and modified polymer as raw materials to prepare the granular soil, the modified polymer is mainly a three-dimensional reticular polymer generated by a cross-linking reaction of humic acid and carboxymethyl cellulose, hydrophilic groups such as carboxyl, hydroxyl and the like on the surface of the molecule are ionized after meeting water and are combined with water molecules to form polar hydrogen bonds, the formed hydrogen bonds can enhance the water absorption performance of the molecule, and the hydrophilic groups can also enhance the adsorption effect on nutrients by electrostatic attraction, van der waals force, ion exchange and the like. The modified polymer is wrapped and granulated by the fly ash, and the prepared granular soil is rich in uniform porous structure, light in weight, free from hardening, strong in dilution water capacity, better in water and fertilizer retention capacity compared with natural sand, and capable of being recycled.
Furthermore, the raw material of the granular soil also comprises trace elements. When the granular soil is prepared, minerals rich in the elements can be added according to the requirements of specific plant elements to meet the growth requirements of plants.
The invention also provides a preparation method of the humic acid modified fly ash particle soil, which comprises the following steps of:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5-1h, adding potassium persulfate and N, N-methylene-bisacrylamide, stirring for 2.5-3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4-5h under the water bath condition of 60-65 ℃, cooling to room temperature, repeatedly washing with distilled water, and drying at 50-70 ℃ to constant weight to obtain a modified polymer;
(3) and (3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, wherein the rotation speed of the granulator is 1000-2000r/min, the granulation time is 10-40min, and then drying at constant temperature of 60-70 ℃ to obtain granular soil.
Humic acid, carboxymethyl cellulose and the like generate high molecular polymers with high water absorption and water retention capacity through a cross-linking reaction, and can absorb water which is hundreds of times or even thousands of times of the self weight, so that soil water is stored in molecules, and the high molecular polymers are wrapped and granulated by utilizing fly ash. When the relative humidity of the environment is reduced, the water in the soil can be slowly released for plants to use, the water can be repeatedly diluted, and the organic components of the soil can be increased by using humic acid and the like, so that the prepared granular soil can be applied to the fields of drought resistance, soil moisture conservation, soil stabilization, soil improvement, water and soil loss control, land desertification and the like.
More specifically, the humic acid is a main organic component of soil, the adverse reaction of the soil caused by application is weaker than that of general artificially synthesized substances, the humic acid can promote the growth and development of plants, increase the stress resistance of crops, improve the nutrition condition of the plants, improve the fertilizer and water retention capacity of the soil, and meanwhile, the humic acid has wide sources and low price and is suitable for large-scale popularization.
The humic acid modified fly ash particle soil and the preparation method thereof according to the present invention will be further described with reference to the following specific examples.
Example 1
The humic acid modified fly ash granular soil comprises the following raw materials of fly ash, polyvinyl alcohol, a modified polymer and water in a weight ratio of 100:1:50:40, wherein the modified polymer is prepared from the following raw materials in parts by weight: 0.5 part of humic acid, 1 part of carboxymethyl cellulose, 5 parts of acrylamide, 0.01 part of N, N-methylene bisacrylamide, 0.1 part of potassium persulfate and 10 parts of water.
The preparation method of humic acid modified fly ash particle soil in the embodiment, as shown in fig. 1, includes the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5h, adding potassium persulfate and N, N-methylene bisacrylamide, stirring for 3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4 hours in a water bath condition at 65 ℃, cooling to room temperature, repeatedly washing with distilled water, and drying at 50 ℃ to constant weight to obtain a modified polymer;
(3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, wherein the rotation speed of the granulator is 1000r/min, the granulation time is 40min, and drying at a constant temperature of 65 ℃ to obtain granular soil;
(4) 400mL of the granular soil prepared in the example is paved in a 500mL flowerpot, the water spinach is inserted in the granular soil, 150mL of water is added, and the growth condition of the water spinach is observed and recorded.
Example 2
The humic acid modified fly ash granular soil comprises the following raw materials of fly ash, polyvinyl alcohol, a modified polymer and water in a weight ratio of 150:10:60:50, wherein the modified polymer is prepared from the following raw materials in parts by weight: 3 parts of humic acid, 5 parts of carboxymethyl cellulose, 7.5 parts of acrylamide, 0.25 part of N, N-methylene bisacrylamide, 0.25 part of potassium persulfate and 20 parts of water.
The preparation method of humic acid modified fly ash particle soil in the embodiment, as shown in fig. 1, includes the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5h, adding potassium persulfate and N, N-methylene bisacrylamide, stirring for 2.5h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 5 hours in a water bath condition at 60 ℃, cooling to room temperature, repeatedly washing with distilled water, and drying at 70 ℃ to constant weight to obtain a modified polymer;
(3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, wherein the rotation speed of the granulator is 1500r/min, the granulation time is 30min, and then drying at a constant temperature of 60 ℃ to obtain granular soil;
(4) 400mL of the granular soil prepared in the example is paved in a 500mL flowerpot, the water spinach is inserted in the granular soil, 150mL of water is added, and the growth condition of the water spinach is observed and recorded.
Example 3
The humic acid modified fly ash granular soil comprises the following raw materials of fly ash, polyvinyl alcohol, a modified polymer and water in a weight ratio of 200:20:80:60, wherein the modified polymer is prepared from the following raw materials in parts by weight: 5 parts of humic acid, 10 parts of carboxymethyl cellulose, 10 parts of acrylamide, 0.5 part of N, N-methylene-bisacrylamide, 0.5 part of potassium persulfate and 30 parts of water.
The preparation method of humic acid modified fly ash particle soil in the embodiment, as shown in fig. 1, includes the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 1h, adding potassium persulfate and N, N-methylene bisacrylamide, stirring for 3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4 hours in a water bath condition at 65 ℃, cooling to room temperature, repeatedly washing with distilled water, and drying at 60 ℃ to constant weight to obtain a modified polymer;
(3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, wherein the rotation speed of the granulator is 2000r/min, the granulation time is 10min, and drying at a constant temperature of 60 ℃ to obtain granular soil;
(4) 400mL of the granular soil prepared in the example is paved in a 500mL flowerpot, the water spinach is inserted in the granular soil, 150mL of water is added, and the growth condition of the water spinach is observed and recorded.
Example 4
The humic acid modified fly ash granular soil comprises the following raw materials of fly ash, polyvinyl alcohol, a modified polymer and water in a weight ratio of 120:10:50:40, wherein the modified polymer is prepared from the following raw materials in parts by weight: 2 parts of humic acid, 4 parts of carboxymethyl cellulose, 6 parts of acrylamide, 0.1 part of N, N-methylene-bisacrylamide, 0.2 part of potassium persulfate and 15 parts of water.
The preparation method of humic acid modified fly ash particle soil in the embodiment, as shown in fig. 1, includes the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5h, adding potassium persulfate and N, N-methylene bisacrylamide, stirring for 2.5-3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4 hours in a water bath condition at 65 ℃, cooling to room temperature, repeatedly washing with distilled water, and drying at 50 ℃ to constant weight to obtain a modified polymer;
(3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, wherein the rotation speed of the granulator is 1200r/min, the granulation time is 25min, and drying at a constant temperature of 70 ℃ to obtain granular soil;
(4) 400mL of the granular soil prepared in the example is paved in a 500mL flowerpot, the water spinach is inserted in the granular soil, 150mL of water is added, and the growth condition of the water spinach is observed and recorded.
Comparative example 1
The raw materials and the preparation method of the comparative example are the same as those of example 1, and the difference is that no modified polymer is added, and only fly ash granulation is used for preparing granular soil, so that fly ash granular soil before modification is obtained.
400mL of the granular soil before modification prepared in the comparative example was taken and spread in a 500mL flowerpot, the water spinach was inserted in the granular soil, 150mL of water was added, and the growth of the water spinach was observed and recorded under the same environment.
The granular soils of examples 1 to 4 of the present invention and comparative example 1 were subjected to water-retention and water-retention tests, and the plant heights of the swamp cabbage cultivated in examples 1 to 4 and comparative example 1 after 15 days were recorded, and the results are shown in table 1.
TABLE 1 granular soil Performance test results
As can be seen from Table 1, the saturated water content of the granular soil prepared by the embodiment of the invention is between 90 and 120 percent and is far greater than that of the granular soil before modification; compared with the water retention capacity of the granular soil before modification, the water retention capacity of the coal ash granular soil modified by humic acid is nearly 2 times of that before modification, the water retention capacity of the granular soil is greatly improved, and the growth condition of the water spinach planted in the granular soil with good water retention and fertilizer retention capacity is better than that of the granular soil before modification. Therefore, the granular soil prepared by the invention has good water and fertilizer retention capacity, adopts the raw materials of fly ash solid waste, humic acid and the like, has wide sources and low cost, and is suitable for large-scale popularization and application in the fields of drought resistance and soil moisture conservation, soil stabilization and soil improvement, water and soil loss control, land desertification control and the like.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (6)
1. The humic acid modified fly ash particle soil is characterized in that the raw material components of the particle soil comprise 100-200:1-20:50-80:40-60 parts by weight of fly ash, polyvinyl alcohol, modified polymer and water, wherein the modified polymer is prepared from the following raw materials in parts by weight: 0.5-5 parts of humic acid, 1-10 parts of carboxymethyl cellulose, 5-10 parts of acrylamide, 0.01-0.5 part of N, N-methylene bisacrylamide, 0.1-0.5 part of potassium persulfate and 10-30 parts of water.
2. The humic acid modified fly ash granular soil according to claim 1, wherein the raw material of the granular soil further comprises trace elements.
3. A method for preparing humic acid modified fly ash particle soil according to claim 1 or 2, which comprises the following steps:
(1) weighing carboxymethyl cellulose, acrylamide and humic acid according to the raw material proportion, dissolving in water, stirring for 0.5-1h, adding potassium persulfate and N, N-methylene-bisacrylamide, stirring for 2.5-3h, and fully and uniformly mixing to obtain a mixture;
(2) reacting the mixture obtained in the step (1) for 4-5h under the condition of water bath, cooling to room temperature, repeatedly washing with distilled water, and drying at 50-70 ℃ to constant weight to obtain a modified polymer;
(3) and (3) crushing the modified polymer obtained in the step (2), adding the crushed modified polymer into a granulator, adding fly ash, polyvinyl alcohol and water in proportion for granulation, and drying at constant temperature to obtain granular soil.
4. The method for preparing humic acid modified fly ash granular soil according to claim 3, wherein the temperature of the water bath in the step (2) is 60-65 ℃.
5. The method for preparing humic acid modified fly ash granular soil according to claim 3, wherein the rotation speed of the granulator in the step (3) is 1000-2000r/min, the granulation time is 10-40min, and 10-30 parts of water are added.
6. The method for preparing humic acid modified fly ash particle soil according to claim 3, wherein the drying temperature in the step (3) is 70-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122407.6A CN110964532A (en) | 2018-09-26 | 2018-09-26 | Humic acid modified fly ash granular soil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122407.6A CN110964532A (en) | 2018-09-26 | 2018-09-26 | Humic acid modified fly ash granular soil and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110964532A true CN110964532A (en) | 2020-04-07 |
Family
ID=70026657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811122407.6A Pending CN110964532A (en) | 2018-09-26 | 2018-09-26 | Humic acid modified fly ash granular soil and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110964532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179695A (en) * | 2021-05-26 | 2021-07-30 | 云南农业大学 | Method for converting hydrophobic soil into hydrophilic soil under rainfall or irrigation conditions |
| CN113861996A (en) * | 2021-10-20 | 2021-12-31 | 四川农业大学 | Compound soil conditioner for calcareous purple soil and application method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042231A1 (en) * | 1998-02-18 | 1999-08-26 | Rocky Mountain Remediation Services, L.L.C. | Treating wastes, preparing construction materials and stabilizing soils |
| CN1821185A (en) * | 2005-02-18 | 2006-08-23 | 爱丽思欧雅玛有限公司 | Granular culture earth |
| CN101973808A (en) * | 2010-09-28 | 2011-02-16 | 湖北富邦化工科技有限公司 | Starch coating material and application thereof in coated sustained/controlled release fertilizers |
| CN102134493A (en) * | 2011-01-18 | 2011-07-27 | 吉林大学 | Permeability/retentivity enhancing material containing humic acid-carboxymethyl cellulose and preparation method thereof |
| CN104263376A (en) * | 2014-09-22 | 2015-01-07 | 安徽大泽生物肥料科技有限公司 | Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent |
| CN104694131A (en) * | 2015-02-03 | 2015-06-10 | 凯姆勒吸水材料（天津）有限公司 | Composite agricultural drought-resistant water conservation agent |
| CN104788619A (en) * | 2015-04-13 | 2015-07-22 | 北京信大虹影环保工程有限公司 | Star-netted organic-inorganic composite super absorbent and preparation method thereof |
| CN105601821A (en) * | 2016-02-05 | 2016-05-25 | 吉林大学 | Macromolecular composite anatonosis storage-increment material and preparation method thereof |
| CN107903118A (en) * | 2017-12-04 | 2018-04-13 | 蒋文兰 | Flyash non-woven fabrics cuttage and seedling culture tree planting bag nutritive cream |
-
2018
- 2018-09-26 CN CN201811122407.6A patent/CN110964532A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042231A1 (en) * | 1998-02-18 | 1999-08-26 | Rocky Mountain Remediation Services, L.L.C. | Treating wastes, preparing construction materials and stabilizing soils |
| CN1821185A (en) * | 2005-02-18 | 2006-08-23 | 爱丽思欧雅玛有限公司 | Granular culture earth |
| CN101973808A (en) * | 2010-09-28 | 2011-02-16 | 湖北富邦化工科技有限公司 | Starch coating material and application thereof in coated sustained/controlled release fertilizers |
| CN102134493A (en) * | 2011-01-18 | 2011-07-27 | 吉林大学 | Permeability/retentivity enhancing material containing humic acid-carboxymethyl cellulose and preparation method thereof |
| CN104263376A (en) * | 2014-09-22 | 2015-01-07 | 安徽大泽生物肥料科技有限公司 | Compound water-retaining agent for soil as well as preparation method and application of compound water-retaining agent |
| CN104694131A (en) * | 2015-02-03 | 2015-06-10 | 凯姆勒吸水材料（天津）有限公司 | Composite agricultural drought-resistant water conservation agent |
| CN104788619A (en) * | 2015-04-13 | 2015-07-22 | 北京信大虹影环保工程有限公司 | Star-netted organic-inorganic composite super absorbent and preparation method thereof |
| CN105601821A (en) * | 2016-02-05 | 2016-05-25 | 吉林大学 | Macromolecular composite anatonosis storage-increment material and preparation method thereof |
| CN107903118A (en) * | 2017-12-04 | 2018-04-13 | 蒋文兰 | Flyash non-woven fabrics cuttage and seedling culture tree planting bag nutritive cream |
Non-Patent Citations (1)
| Title |
|---|
| 王凯 等: ""粉煤灰添加对草地早熟禾种子发芽和幼苗生长的影响"", 《中国草地学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179695A (en) * | 2021-05-26 | 2021-07-30 | 云南农业大学 | Method for converting hydrophobic soil into hydrophilic soil under rainfall or irrigation conditions |
| CN113861996A (en) * | 2021-10-20 | 2021-12-31 | 四川农业大学 | Compound soil conditioner for calcareous purple soil and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103333004B (en) | Agricultural granular zinc sulfate fertilizer and preparation method thereof | |
| CN107021800A (en) | Compound fertilizer, preparation method and applications | |
| CN103897112A (en) | Preparation method of super absorbent polymer (nitrogen) aquasorb-fertilizer | |
| CN103467197A (en) | Acid-proof, moisture-holding and superactive special fertilizer technology for forestry and additive | |
| CN101280073B (en) | Agricultural liquid ground cover film, preparation and use method thereof | |
| CN110964532A (en) | Humic acid modified fly ash granular soil and preparation method thereof | |
| CN1211320C (en) | Film-coated slow-released fertilizer and preparation process thereof | |
| CN118344875A (en) | A saline-alkali land improver and preparation method thereof | |
| CN1284452C (en) | Large grain coating agent for aerial seeding | |
| CN106187432A (en) | A kind of preparation method of Water-retaining slow-release fertilizer | |
| CN100398625C (en) | Water-loss reducer of soil and its preparation method | |
| CN108207157A (en) | A kind of salt affected soil modification method | |
| CN102167787B (en) | Preparation method of medical stone composite water-absorbing material | |
| CN106831231A (en) | A kind of environment-friendly type two-layer coated water-retaining sustained-release fertilizer containing waste residue of Chinese herbs and preparation method thereof | |
| CN103975753B (en) | Floating seedling cultivation substrate for flue-cured tobacco and preparation method thereof | |
| CN110041147A (en) | Drought-resistant water-preserving type charcoal base manure material and preparation method thereof | |
| CN114231292B (en) | Bentonite-based plateau soil modifier and application thereof | |
| CN106398066A (en) | Water-based high molecular polymer-biochar film material, and preparation method thereof | |
| CN110157447A (en) | A sandstorm soil conditioner and its preparation method and use method | |
| CN111233581A (en) | Tobacco special fertilizer for improving water retention performance of tobacco planting soil | |
| CN105295122B (en) | A kind of preparation method of the fertile coated fertilizer of environment-friendly type slow release | |
| CN108440078A (en) | A kind of bagasse base water-retaining agent and preparation method thereof | |
| CN108658661A (en) | Improve photosynthetic environment-friendly coated release fertilizer and preparation method thereof | |
| CN107285908A (en) | It is a kind of to promote watermelon fertilizer of growth and preparation method thereof | |
| CN1297631C (en) | Composite moisture holding agent of humic acid and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |
|
| RJ01 | Rejection of invention patent application after publication |