CN114752014B - Mine soil modifier and preparation method thereof - Google Patents
Mine soil modifier and preparation method thereof Download PDFInfo
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- CN114752014B CN114752014B CN202210397647.7A CN202210397647A CN114752014B CN 114752014 B CN114752014 B CN 114752014B CN 202210397647 A CN202210397647 A CN 202210397647A CN 114752014 B CN114752014 B CN 114752014B
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
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- 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
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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
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
- C09K17/20—Vinyl polymers
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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
- C09K2101/00—Agricultural use
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Pest Control & Pesticides (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a mine soil modifier and a preparation method thereof, wherein the mine soil modifier comprises the following raw materials in parts by weight: 40-80 parts of acrylamide, 10-30 parts of acrylic acid, 10-20 parts of methyl methacrylate, 1-3 parts of functional auxiliary agents, 0.5-1.5 parts of benzoyl peroxide and 80-120 parts of deionized water; the functional auxiliary agent consists of methyl glucitol polyether and an epoxy surfactant according to the mass ratio of 1:0.5-2; the epoxy surfactant is epoxy polyether fluorosilicone surfactant or hydroxyethyl cellulose grafted epoxy soybean oil polymer surfactant; the preparation method of the mine soil modifier comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier. The modifier prepared by the invention can play a good role in repairing alkaline mine soil.
Description
Technical Field
The invention relates to the technical field of mine soil remediation, in particular to a mine soil modifier and a preparation method thereof.
Background
The ecological management of the mine is to repair the mine smoothly and repair the mine ecology. Not only the mine is greened, but also an ecological function restoration is constructed, and a complete functional ecological system is generally realized. A complete ecosystem, which must be a good quality soil, achieves the original greenization vegetation, and then transitions to the functional ecosystem operation.
The mountain and stone extraction of the mine has great influence on the barren soil, and is mainly characterized by the stripping of surface soil, the exploitation and crushing of rock, so that the layer and structure of the whole soil are damaged, the water content is low, the organic matter is low, the biological colony is low, the barren soil is caused, and the ecological function of the soil is gradually lost. The soil in the mining area is generally shallow in soil layer, low in nutrient content and slow in plant growth, so that once the plants are destroyed, the plants cannot be recovered for decades or even hundreds of years. If effective ecological restoration measures are not timely taken after the mining area is closed, serious land degradation, water and soil loss, collapse, surface cracks and the like are caused, and even debris flow and mountain torrents are generated when rainwater is encountered. The vegetation is greatly destroyed, so that a great amount of water and soil loss is caused.
The ecological restoration of the mine firstly controls water and soil loss. The ecological restoration engineering of the quarry is realized by soil body remodeling such as land leveling and vegetation reconstruction processes, so that the water and soil loss control is realized, the water and soil green planting production is realized, and the ecological restoration engineering is a key problem facing ecological management restoration of mines.
Disclosure of Invention
Based on the technical problems in the background technology, the invention provides the mine soil modifier and the preparation method thereof, which can play a good role in repairing alkaline mine soil.
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 40-80 parts of acrylamide, 10-30 parts of acrylic acid, 10-20 parts of methyl methacrylate, 1-3 parts of functional auxiliary agent, 0.5-1.5 parts of benzoyl peroxide and 80-120 parts of deionized water.
Preferably, the functional auxiliary agent consists of methyl glucitol polyether and epoxy surfactant according to the mass ratio of 1:0.5-2.
Preferably, the epoxy-based surfactant is an epoxy-based polyether fluorosilicone surfactant or a hydroxyethyl cellulose grafted epoxidized soybean oil polymer surfactant.
The preparation method of the mine soil modifier provided by the invention comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier.
Preferably, the reaction conditions are: the microwave power is 300-500W, the temperature is 70-90 ℃ and the time is 1-3h.
Preferably, the pH of the prepared mine soil modifier is from 6 to 7.
Preferably, the viscosity of the prepared mine soil modifier is 500-1000mPa.s.
The invention provides application of the mine soil modifier in mine soil restoration.
Preferably, the method steps are as follows: and uniformly mixing plant straw, wood powder and mine soil modifier with mine soil to repair.
Preferably, the components are mixed according to the weight parts: 80-90 parts of mine soil, 5-15 parts of plant straw, 1-10 parts of wood powder and 0.05-0.15 part of mine soil modifier.
The beneficial technical effects of the invention are as follows:
(1) The modifier is super absorbent resin, and is different from commercial absorbent resin in that weak acid resin is used for improving the alkaline structure of mine soil, analyzing the ion balance of the soil, enriching the nutrient components of the soil and enriching the organic matters of the mine soil. The existence of the water-absorbent resin can always keep the moisture of soil, promote the moisture of straw and wood powder, promote the decay of straw and wood powder and promote the propagation and diffusion of biological bacteria. Promoting the organization and nutrition of the diffusion soil under a certain humidity.
(2) The modifier provided by the invention uses water-soluble acrylamide as a main material, methyl methacrylate as a framework material and acrylic acid as an acid source material, and the three components are selected on the premise of meeting the water-soluble modifier and on the principle of weak acidity, so that the aim of improving the alkaline mine soil structure is fulfilled. In order to ensure the dispersibility of the water-soluble resin, methyl methacrylate is used as a framework material, the cohesive energy of the acrylic acid acrylamide linear copolymerization macromolecule is overcome, and the diffusivity of the aqueous medium of the macromolecule is enhanced, so that each carboxyl of the ternary copolymerization macromolecule can realize the function with an acid group. Avoiding the acid groups from being wrapped and clamped to lose the acid effect.
(3) The functional auxiliary agent is added in the modifier, so that the dispersibility and the water retention of the modifier can be further improved, the soil restoration rate is improved, and the methyl glucitol polyether and the epoxy surfactant in the functional auxiliary agent have a certain synergistic effect on mine soil restoration.
(4) The acidic modifier disclosed by the invention is compatible with waste straws of crops to improve mine soil, so that the modifying efficiency of the modifier can be improved. The modifier is an acidic medium, can be adhered with straws added into soil and moisten the straws, promotes the decay of the moistened straws in the soil, not only can provide organic fertilizer for the soil, but also biological bacteria generated by the decay are beneficial to enriching the fertility of the soil and decomposing inorganic mineral substances of the soil, thereby further improving the fertility and the organization of the soil for natural reconstruction. Thereby ensuring the survival and production of planted trees and flowers.
Detailed Description
Example 1
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 60 parts of acrylamide, 20 parts of acrylic acid, 15 parts of methyl methacrylate, 2 parts of a functional auxiliary agent, 1 part of benzoyl peroxide and 100 parts of deionized water.
The functional auxiliary agent consists of methyl glucitol polyether and an epoxy surfactant according to the mass ratio of 1:1.
The epoxy-based surfactant is an epoxy-based polyether fluorosilicone surfactant.
The preparation method of the mine soil modifier provided by the invention comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier.
The reaction conditions are as follows: microwave power 400W, temperature 80 ℃ and time 2h.
The pH value of the prepared mine soil modifier is 6.5; the viscosity of the prepared mine soil modifier was 750mpa.s.
Example 2
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 40 parts of acrylamide, 10 parts of acrylic acid, 10 parts of methyl methacrylate, 1 part of a functional auxiliary agent, 0.5 part of benzoyl peroxide and 80 parts of deionized water.
The functional auxiliary agent consists of methyl glucitol polyether and an epoxy surfactant according to the mass ratio of 2:1.
The epoxy surfactant is hydroxyethyl cellulose grafted epoxy soybean oil polymer surfactant.
The preparation method of the mine soil modifier provided by the invention comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier.
The reaction conditions are as follows: the microwave power is 300W, the temperature is 70 ℃ and the time is 1h.
The pH value of the prepared mine soil modifier is 6; the viscosity of the prepared mine soil modifier was 500mPa.s.
Example 3
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 80 parts of acrylamide, 30 parts of acrylic acid, 20 parts of methyl methacrylate, 3 parts of a functional auxiliary agent, 1.5 parts of benzoyl peroxide and 120 parts of deionized water.
The functional auxiliary agent consists of methyl glucitol polyether and epoxy surfactant according to the mass ratio of 1:2.
The epoxy-based surfactant is an epoxy-based polyether fluorosilicone surfactant.
The preparation method of the mine soil modifier provided by the invention comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier.
The reaction conditions are as follows: the microwave power is 500W, the temperature is 90 ℃ and the time is 3h.
The pH value of the prepared mine soil modifier is 6.8; the viscosity of the prepared mine soil modifier is 1000mPa.s.
Example 4
The application of the mine soil modifier in mine soil remediation is as follows: uniformly mixing plant straw, wood powder and mine soil modifier to repair mine soil; the weight ratio of each component is as follows: 85 parts of mine soil, 10 parts of plant straw, 5 parts of wood powder and 0.1 part of mine soil modifier. Wherein the mine soil modifier is the product prepared in example 1.
Example 5
The application of the mine soil modifier in mine soil remediation is as follows: uniformly mixing plant straw, wood powder and mine soil modifier to repair mine soil; the weight ratio of each component is as follows: 80 parts of mine soil, 5 parts of plant straw, 1 part of wood powder and 0.05 part of mine soil modifier. Wherein the mine soil modifier is the product prepared in example 1.
Example 6
The application of the mine soil modifier in mine soil remediation is as follows: uniformly mixing plant straw, wood powder and mine soil modifier to repair mine soil; the weight ratio of each component is as follows: 90 parts of mine soil, 15 parts of plant straw, 10 parts of wood powder and 0.15 part of mine soil modifier. Wherein the mine soil modifier is the product prepared in example 1.
Comparative example 1
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 60 parts of acrylamide, 20 parts of acrylic acid, 15 parts of methyl methacrylate, 2 parts of functional auxiliary agent, 1 part of benzoyl peroxide and 100 parts of deionized water; wherein the functional auxiliary agent is methyl glucitol polyether. The other conditions were the same as in example 1.
The application of the mine soil modifier in mine soil remediation is as follows: uniformly mixing plant straw, wood powder and mine soil modifier to repair mine soil; the weight ratio of each component is as follows: 85 parts of mine soil, 10 parts of plant straw, 5 parts of wood powder and 0.1 part of mine soil modifier.
Comparative example 2
The mine soil modifier provided by the invention comprises the following raw materials in parts by weight: 60 parts of acrylamide, 20 parts of acrylic acid, 15 parts of methyl methacrylate, 2 parts of functional auxiliary agent, 1 part of benzoyl peroxide and 100 parts of deionized water; wherein the functional auxiliary agent is epoxy polyether fluorosilicone surfactant. The other conditions were the same as in example 1.
The application of the mine soil modifier in mine soil remediation is as follows: uniformly mixing plant straw, wood powder and mine soil modifier to repair mine soil; the weight ratio of each component is as follows: 85 parts of mine soil, 10 parts of plant straw, 5 parts of wood powder and 0.1 part of mine soil modifier.
The soil restored in example 4, comparative example 1 and comparative example 2 was divided into 2m×2m areas, and sown at row spacing of 0.5m, with 4 grains per litter for a total of 100 grains. The germination rate and survival rate after 2 months of growth were measured, and the results are shown in table 1. Wherein the blank control group is unrepaired mine soil.
Table 1 soil remediation test results
| Group of | Seed germination percentage (%) | Survival after 2 months of growth (%) |
| Example 4 | 96 | 97.9 |
| Comparative example 1 | 68 | 76.5 |
| Comparative example 2 | 61 | 72.1 |
| Blank control group | 13 | 15.4 |
As can be seen from table 1, the mine soil modifier prepared by the invention can significantly improve the survival rate of vegetation, which indicates that the mine soil modifier of the invention can effectively repair mine soil, and the data of example 4 and comparative examples 1-2 show that the methyl glucitol polyether and the epoxy-based surfactant in the functional auxiliary agent added in the mine soil modifier of the invention have a certain synergistic effect on mine soil repair.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The mine soil modifier is characterized by comprising the following raw materials in parts by weight: 40-80 parts of acrylamide, 10-30 parts of acrylic acid, 10-20 parts of methyl methacrylate, 1-3 parts of functional auxiliary agents, 0.5-1.5 parts of benzoyl peroxide and 80-120 parts of deionized water;
the functional auxiliary agent consists of methyl glucitol polyether and an epoxy surfactant according to the mass ratio of 1:0.5-2;
the epoxy-based surfactant is an epoxy-based polyether fluorosilicone surfactant.
2. The method for preparing the mine soil modifier according to claim 1, wherein the method comprises the following steps: adding acrylic acid, methyl methacrylate, functional auxiliary agent and benzoyl peroxide into deionized water, uniformly mixing, and then reacting under the microwave condition to obtain the mine soil modifier.
3. The method for preparing the mine soil modifier according to claim 2, wherein the reaction conditions are as follows: the microwave power is 300-500W, the temperature is 70-90 ℃ and the time is 1-3h.
4. The method for producing a mine soil modifier according to claim 2, wherein the pH of the produced mine soil modifier is 6 to 7.
5. The method for producing a mine soil modifier according to claim 2, wherein the viscosity of the produced mine soil modifier is 500 to 1000mpa.s.
6. Use of the mine soil modifier of claim 1 in mine soil remediation.
7. The use of the mine soil modifier according to claim 6 in mine soil remediation, characterized by the method steps of: and uniformly mixing plant straw, wood powder and mine soil modifier with mine soil to repair.
8. The application of the mine soil modifier in mine soil remediation according to claim 6, wherein the mine soil modifier comprises the following components in parts by weight: 80-90 parts of mine soil, 5-15 parts of plant straw, 1-10 parts of wood powder and 0.05-0.15 part of mine soil modifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210397647.7A CN114752014B (en) | 2022-04-15 | 2022-04-15 | Mine soil modifier and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210397647.7A CN114752014B (en) | 2022-04-15 | 2022-04-15 | Mine soil modifier and preparation method thereof |
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| CN114752014B true CN114752014B (en) | 2023-07-18 |
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| CN102604644B (en) * | 2012-02-27 | 2015-03-11 | 甘肃源岗农林开发有限公司 | Ecological water-retaining agent used for restoring saline lands, and preparation method thereof |
| CN106188430A (en) * | 2015-04-30 | 2016-12-07 | 山东中商研高分子材料有限公司 | A kind of preparation method of polymeric soil renovation agent |
| KR102256143B1 (en) * | 2019-12-03 | 2021-05-26 | 주식회사 한솔케미칼 | Water-soluble anion polymer dispersion having high molecular weight and the preparing method thereof |
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