CN115353891B - Soil improvement material and preparation method and application thereof - Google Patents
Soil improvement material and preparation method and application thereof Download PDFInfo
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- CN115353891B CN115353891B CN202211276484.3A CN202211276484A CN115353891B CN 115353891 B CN115353891 B CN 115353891B CN 202211276484 A CN202211276484 A CN 202211276484A CN 115353891 B CN115353891 B CN 115353891B
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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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
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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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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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
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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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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- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Pest Control & Pesticides (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The application provides a soil improvement material and a preparation method and application thereof, and relates to the field of solid waste treatment. The soil improvement material comprises the following raw materials in parts by weight: 60-70 parts of waste ammonia adsorbent, 10-20 parts of vegetable gum, 0-20 parts of biochar and 3-10 parts of adhesive; the waste ammonia adsorbent is generated by industrial ammonia adsorption treatment, and the adsorption matrix of the waste ammonia adsorbent is one or more of activated carbon, molecular sieve and zeolite. The preparation method of the soil improvement material comprises the following steps: and mixing the raw materials to obtain the soil improvement material. Use of a soil improvement material for improving acid soil. The application provides a soil improvement material effectively utilizes the discarded ammonia adsorbent among the industrial production to be used for the acid soil improvement of copper mine, has solved the discarded adsorbent and has dealt with the land that causes and occupy and the environmental pollution problem. By the coating effect of the vegetable gum, the soil improvement material has good slow release performance, and the survival rate of plants is improved.
Description
Technical Field
The application relates to the field of solid waste treatment, in particular to a soil improvement material and a preparation method and application thereof.
Background
The ammonia is alkaline and can be used as fertilizer to be applied to soil for plant absorption and utilization. Ammonia gas emission exists in the industrial production of chemical industry, nonferrous industry and the like and in the processes of waste gas denitration and the like. The most common method for treating ammonia gas is adsorption, and commonly used porous materials are activated carbon, molecular sieves, zeolites, and the like. When the physical activity of the porous adsorbent reaches a certain saturation degree, the adsorption capacity is lost. The waste ammonia adsorbent after saturated adsorption is generally used as general industrial solid waste for stockpiling or landfill treatment, so that site waste and secondary pollution are caused.
The metal mines are present in a large proportion as sulphides in the minerals, with copper mines being the most typical. The copper mine waste rock is piled in the open air, under the catalysis of microorganisms such as thiobacillus ferrooxidans and thiobacillus thiooxidans, sulfur and metal sulfides in the waste rock are oxidized, and acid mine wastewater is formed through rainwater washing. The pH value of the acidic wastewater is extremely low, and the acidic wastewater contains metal ions such As Fe, mn, cu, zn, pb, cd, as, al and the like and SO 4 2- And the environment is polluted and damaged. In the process of recovering vegetation in the waste rock yard, the acid production environment of the yard seriously restricts the normal growth of plants.
Disclosure of Invention
The present application aims to provide a soil improvement material, a preparation method and an application thereof to solve the above problems.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a soil improvement material comprises the following raw materials in parts by weight:
60-70 parts of waste ammonia adsorbent, 10-20 parts of vegetable gum, 0-20 parts of biochar and 3-10 parts of adhesive;
the waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is one or more of activated carbon, molecular sieve, zeolite, silica gel and graphene oxide.
Preferably, the raw material of the biochar is selected from one or more of wood chips, bamboo charcoal and rice hulls.
Preferably, the vegetable gum is a natural vegetable gum comprising galactomannan, protein, cellulose, water and inorganic elements;
the inorganic elements include calcium and magnesium.
Preferably, the binder comprises a biological binder and/or an inorganic binder;
the inorganic binder includes bentonite.
Preferably, the binder is a bioadhesive.
Preferably, the adsorption matrix of the waste ammonia gas adsorbent is activated carbon.
A method for preparing the soil improvement material comprises the following steps:
when the adsorption matrix of the waste ammonia adsorbent contains activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, and coating the waste ammonia adsorbent to obtain the soil improvement material;
and when the adsorption matrix of the waste ammonia adsorbent does not contain activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, mixing the waste ammonia adsorbent and the biochar, then repeatedly granulating, and then laminating to obtain the soil improvement material.
Preferably, water is added in the mixing process, and the mixing process further comprises the following steps: and (5) drying.
Preferably, after the water is added, the water content of the obtained mixture is 10-15%;
the particle size of the soil improvement material is 4-6mm.
The application of the soil improvement material is used for improving acid soil.
Compared with the prior art, the beneficial effect of this application includes:
according to the soil improvement material provided by the application, the waste ammonia adsorbent in industrial production is effectively utilized for improving the acid soil of the copper mine, and the problems of land occupation and environmental pollution caused by treatment of the waste adsorbent are solved; plant glue is even attached to on abandonment ammonia adsorbent particle surface under the effect of adhesive, forms the parcel structure, and through the cladding effect of plant glue, can be so that abandonment ammonia adsorbent has fine slow release performance, can effectively reduce volatilizing of ammonia, the extension ammonia release time reduces the stimulation of ammonia to the vegetation to improve the plant survival rate.
As a soil conditioner, alkaline substances dissolved out from the waste ammonia adsorbent can neutralize the pH value of acid soil, and the soil acidity can be effectively improved after the alkaline substances are applied; the ammonia dissolved out from the waste ammonia adsorbent reacts with copper ions, zinc ions, iron ions and the like in the soil and is converted into hydroxide precipitate, so that heavy metal ions are effectively solidified, and the emission of the heavy metal ions in the acidic leaching water is reduced; the slow-release and low-concentration ammonia gas can be absorbed by plants to be used as nitrogen nutrition, thereby being beneficial to the growth of the plants; matrix materials such as activated carbon, molecular sieve, zeolite and the like in the waste ammonia adsorbent have developed pore structures and better water absorption, so that the interaction of the soil environment with the atmosphere and rainfall is increased, the oxygen concentration in soil pores is ensured, the soil humidity is adjusted and balanced, and the self-repairing of acid soil and the growth of plants are facilitated; the vegetable gum can obviously enhance the soil aggregation effect, increase the content of organic matters and improve the water and fertilizer retention performance.
The preparation method of the soil improvement material is simple to operate and low in cost.
The soil improvement material provided by the application can be widely used for improvement of acid soil, especially for copper mine soil remediation.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments are briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope of the present application.
FIG. 1 is a cross-sectional view of a soil amendment material obtained in example 1;
FIG. 2 is a partially enlarged view of a cross-sectional structure of a soil improving material obtained in example 1;
FIG. 3 is a surface structure view of the soil improvement material obtained in example 1;
fig. 4 is a partially enlarged view of a structure of a surface of the soil amendment material obtained in example 1.
Detailed Description
The terms as used herein:
"by 8230; \ 8230; preparation" is synonymous with "comprising". As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," "contains" or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of 823070, 8230composition" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of (8230) \8230; occurs in a clause of the subject matter of the claims rather than immediately after the subject matter, it only defines the elements described in the clause; no other elements are excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the recited range should be interpreted to include ranges of "1 to 4," "1 to 3," "1 to 2 and 4 to 5," "1 to 3 and 5," and the like. When a range of values is described herein, unless otherwise specified, the range is intended to include the endpoints thereof, and all integers and fractions within the range.
In these examples, the parts and percentages are by mass unless otherwise indicated.
"part by mass" means a basic unit of measure indicating a mass ratio of a plurality of components, and 1 part may represent an arbitrary unit mass, for example, 1g or 2.689 g. If the parts by mass of the component A are a parts and the parts by mass of the component B are B parts, the mass ratio of the component A to the component B is expressed as a: b. alternatively, the mass of the A component is aK and the mass of the B component is bK (K is an arbitrary number, and represents a multiple factor). It is not to be misunderstood that the sum of the parts by mass of all the components is not limited to the limit of 100 parts, unlike the parts by mass.
"and/or" is used to indicate that one or both of the illustrated conditions may occur, e.g., a and/or B includes (a and B) and (a or B).
A soil improvement material comprises the following raw materials in parts by weight:
60-70 parts of waste ammonia adsorbent, 10-20 parts of vegetable gum, 0-20 parts of biochar and 3-10 parts of adhesive;
the waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is one or more of activated carbon, molecular sieve, zeolite, silica gel and graphene oxide.
It should be noted that the adsorbent substrate referred to herein may be a corresponding raw material or a modified material, such as a molecular sieve or a modified molecular sieve.
The waste ammonia adsorbent belongs to general class I industrial solid waste, and mainly comprises a porous adsorption matrix and adsorbed ammonia. Ammonia gas forms ammonia water under the precipitation condition, the dissolved ammonia can neutralize the pH value of acid soil, and the soil acidity can be effectively improved after the ammonia water is applied. Meanwhile, the dissolved ammonia reacts with copper ions, zinc ions, iron ions and the like in the soil and is converted into hydroxide precipitate, so that the heavy metal ions are effectively solidified, and the discharge of the heavy metal ions in the acidic leaching water is reduced.
Ammonia has a two-sided effect on plants. On the one hand, the fertilizer promotes the growth of plants, and on the other hand, the short-time large-amount discharge of high-concentration ammonia is corrosive to plants, thereby destroying the growth of plants. The coating effect of vegetable gum can make the discarded ammonia adsorbent granule after smashing have fine slowly-releasing performance, can effectively reduce volatilizing of ammonia, and the extension ammonia release time reduces the stimulation of ammonia to the vegetation to improve the plant survival rate. And secondly, the vegetable gum can obviously enhance the soil aggregation effect, increase the content of organic matters and improve the water and fertilizer retention performance.
Optionally, the amount of the waste ammonia gas adsorbent may be 60 parts, 65 parts, 70 parts or any value between 60 and 70 parts, the amount of the plant gum may be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts or any value between 10 and 20 parts, the amount of the biochar may be 0 part, 1 part, 5 parts, 10 parts, 15 parts, 20 parts or any value between 0 and 20 parts, and the amount of the adhesive may be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts or any value between 3 and 10 parts.
In an alternative embodiment, the raw material of the bio-char is selected from one or more of wood chips, bamboo charcoal, and rice hulls.
The biochar is alkaline, has a good improvement effect on soil, and can improve the pH value of acid soil when applied to the soil. The biochar has a complex porous structure and a larger specific surface area, can increase the soil permeability, improve soil aggregates, adsorb more water and nutrient ions, and improve the water capacity and nutrient holding capacity of the soil. The biomass charcoal contains a certain amount of easily-decomposed organic compounds, and soil microorganisms can use the easily-decomposed organic compounds as carbon sources, so that the biomass and activity of the soil microorganisms can be improved, and the growth of microbial communities in soil is facilitated.
The raw material for preparing the biochar is rice husk preferably. The rice hulls are products obtained after rice processing, are rich in cellulose, lignin and silicon dioxide, are harder and have stronger wear resistance when the silicon content in the rice hulls is higher, and are solid waste resources which can be recycled.
In an alternative embodiment, the vegetable gum is a natural vegetable gum comprising galactomannan, protein, cellulose, water and inorganic elements;
the inorganic elements include calcium and magnesium.
The vegetable gum can be swelled and hydrated in water to form high-viscosity sol liquid, and the viscosity of the sol liquid can be obviously increased along with the increase of the concentration of the powder. The vegetable gum is attached to the surface of the waste adsorbent particles, so that a wrapping structure is easily formed.
In an alternative embodiment, the binder comprises a biological binder and/or an inorganic binder;
the inorganic binder includes bentonite.
In an alternative embodiment, the adhesive is a bioadhesive.
In an alternative embodiment, the adsorption matrix of the waste ammonia adsorbent is activated carbon, and the soil improvement material is not added with the biochar.
A method for preparing the soil improvement material comprises the following steps:
when the adsorption matrix of the waste ammonia adsorbent contains activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, and coating the waste ammonia adsorbent to obtain the soil improvement material;
and when the adsorption matrix of the waste ammonia adsorbent does not contain activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, mixing the waste ammonia adsorbent and the biochar, then repeatedly granulating, and then laminating to obtain the soil improvement material.
The waste ammonia adsorbent is crushed before use, and the particle size of the crushed particles is 3-5mm. The particle size of the crushed particles may be any of 3mm, 4mm, 5mm or 3-5mm.
In an alternative embodiment, water is added during the mixing process, and the mixing process further comprises: and (5) drying.
In an alternative embodiment, after the addition of the water, the resulting mixture has a water content of 10-15%;
the particle size of the obtained soil improvement material is 4-6mm.
Optionally, the water content of the mixture may be 10%, 11%, 12%, 13%, 14%, 15%, or any value between 10-15%; the particle size of the granules obtained by granulation can be any value between 4mm, 5mm, 6mm or 4-6mm.
The drying is usually carried out in a normal-temperature natural airing way.
The application of the soil improvement material is used for improving acid soil.
Embodiments of the present application will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present application and should not be construed as limiting the scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
This embodiment provides a soil amendment material comprising: 70 g of waste ammonia adsorbent, 12g of vegetable gum and 5g of adhesive.
The waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is activated carbon. The vegetable gum is natural vegetable gum, including galactomannan, protein, cellulose, water, calcium and magnesium; the binder is hydroxymethyl cellulose.
The preparation method of the soil improvement material comprises the following steps:
crushing the waste ammonia adsorbent to 3mm, mixing the plant gum and the adhesive with water to obtain a mixture with the water content of 10%, coating the waste ammonia adsorbent to obtain particles with the particle size of 3-4 mm, and drying to obtain the soil improvement material.
The cross-sectional structure of the soil improvement material is shown in fig. 1 and 2, and the surface structure of the soil improvement material is shown in fig. 3 and 4.
As can be seen from the cross section structure of the soil improvement material, the surface of the waste adsorbent adsorbing ammonia gas presents a porous structure, and the adsorbed ammonia gas is very easy to release in a short time; according to the surface structure of the soil improvement material, the plant gum coating film is formed on the surface of the waste ammonia adsorbent, so that the material has slow release performance, and the ammonia release time is prolonged.
Example 2
This embodiment provides a soil amendment material comprising: 65g of waste ammonia adsorbent, 10 g of vegetable gum, 10 g of charcoal and 5g of adhesive.
The waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is active carbon and zeolite. The raw material of the biochar is rice husk. The vegetable gum is natural vegetable gum, including galactomannan, protein, cellulose, water, calcium and magnesium; the binder is hydroxymethyl cellulose.
The preparation method of the soil improvement material comprises the following steps:
crushing the waste ammonia adsorbent to 1mm, mixing the biochar with the waste ammonia adsorbent, then repeatedly granulating to form particles of 3mm, mixing the plant gum and the adhesive with water to obtain a mixture with the water content of 10%, coating the particles with a film, then obtaining the soil improvement material with the particle size of 3-4 mm, and drying.
Example 3
This embodiment provides a soil amendment material comprising: 70 g of waste ammonia adsorbent, 15 g of vegetable gum, 5g of charcoal and 3 g of adhesive.
The waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is active carbon and zeolite. The raw material of the biochar is rice husk. The vegetable gum is natural vegetable gum, including galactomannan, protein, cellulose, water, calcium and magnesium; the binder is hydroxymethyl cellulose.
The preparation method of the soil improvement material comprises the following steps:
crushing the waste ammonia adsorbent to 1mm, mixing the biochar with the waste ammonia adsorbent, then repeatedly granulating to form particles of 3mm, mixing the plant gum and the adhesive with water to obtain a mixture with the water content of 10%, coating the particles with a film, then obtaining the soil improvement material with the particle size of 3-4 mm, and drying.
Example 4
This embodiment provides a soil amendment material comprising: 60 g of waste ammonia adsorbent, 15 g of vegetable gum, 15 g of biochar and 5g of adhesive.
The waste ammonia adsorbent is produced by industrial ammonia adsorption treatment, and the adsorption matrix is active carbon and zeolite. The raw material of the biochar is rice husk. The vegetable gum is natural vegetable gum, including galactomannan, protein, cellulose, water, calcium and magnesium; the binder is hydroxymethyl cellulose.
The preparation method of the soil improvement material comprises the following steps:
crushing the waste ammonia adsorbent to 1mm, mixing the biochar with the waste ammonia adsorbent, then repeatedly granulating to form 3mm particles, mixing the plant gum and the adhesive with water to obtain a mixture with the water content of 10%, coating the particles with a film, then obtaining the soil improvement material with the particle size of 3-4 mm, and drying.
In conjunction with the examples, a total of 3 validation blocks were designed, labeled as block a (comparative example 1), block B (comparative example 2), and block C (example 1).
Comparative example 1
The present comparative example provides a soil improving material comprising: 60 g of waste ammonia adsorbent (matrix does not contain activated carbon) and 20 g of biochar.
Comparative example 2
The present comparative example provides a soil improving material comprising: 20 g of vegetable gum, 70 g of charcoal and 5g of adhesive (hydroxymethyl cellulose).
The influence of different blocks on the germination rate, the biomass, the vegetation coverage and the soil pH, the volume weight and the conductivity of the broadleaf weeds is shown in the table 1, the vegetation germination rate, the biomass and the vegetation coverage are measured by a sample method, the soil pH is measured by a potential method, the soil volume weight is measured by a cutting ring method, and the soil conductivity is measured by an electrode method.
TABLE 1 Effect of different plots on soil and broadleaf grass growth
As can be seen from table 1, different blocks exhibited different effects on germination, biomass, coverage and soil pH, volume weight and conductivity in the area where the broadleaf grass seeds were located, and the overall expression was that block C was significantly higher than the control blocks (block a and block B lacking the specific component), indicating that the improvement effect of the soil improvement material was significantly better than that of the conventional acidic improvement material.
The application provides a method for improving copper mine acid soil by using waste ammonia gas adsorbent in industrial production, solves the problems of land occupation and environmental pollution caused by waste adsorbent disposal, and provides a new improvement method for copper mine acid soil.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (4)
1. The soil improvement material is characterized by comprising the following raw materials in parts by weight:
60-70 parts of waste ammonia adsorbent, 10-20 parts of vegetable gum, 0-20 parts of biochar and 3-10 parts of adhesive;
the waste ammonia adsorbent is a waste adsorbent generated by industrial ammonia adsorption treatment, and an adsorption matrix of the waste ammonia adsorbent is one or more of activated carbon, molecular sieve, zeolite, silica gel and graphene oxide; the raw material of the biochar is selected from one or more of wood chips, bamboo charcoal and rice hulls; the vegetable gum is natural vegetable gum and comprises galactomannan, protein, cellulose, water and inorganic elements; the inorganic elements include calcium and magnesium; the adhesive comprises a biological adhesive and/or an inorganic adhesive; the inorganic binder comprises bentonite;
the preparation method of the soil improvement material comprises the following steps:
when the adsorption matrix of the waste ammonia adsorbent contains activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, and coating the waste ammonia adsorbent to obtain the soil improvement material;
when the adsorption matrix of the waste ammonia adsorbent does not contain activated carbon, mixing the plant gum and the adhesive to form a colloidal solution, mixing the waste ammonia adsorbent and the biochar, then repeatedly granulating, and then laminating to obtain the soil improvement material;
adding water in the mixing process, and after mixing, further comprising: drying; after the water is added, the water content of the obtained mixture is 10-15%; the particle size of the soil improvement material is 4-6mm.
2. The soil amendment material according to claim 1, wherein the binder is a biological binder.
3. The soil amendment material according to claim 1 or 2, wherein the adsorption matrix of the waste ammonia gas adsorbent is activated carbon.
4. Use of a soil amendment material according to any of claims 1 to 3 for amending acidic soil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211276484.3A CN115353891B (en) | 2022-10-19 | 2022-10-19 | Soil improvement material and preparation method and application thereof |
| PCT/CN2023/081780 WO2024082531A1 (en) | 2022-10-19 | 2023-03-16 | Soil improvement material, preparation method therefor and use thereof |
| ZA2023/03812A ZA202303812B (en) | 2022-10-19 | 2023-03-24 | Soil improvement material and its preparation method and application |
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| CN202211276484.3A CN115353891B (en) | 2022-10-19 | 2022-10-19 | Soil improvement material and preparation method and application thereof |
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| CN106635030A (en) * | 2016-09-20 | 2017-05-10 | 南京工业大学 | Acidic soil conditioner and preparation method and application thereof |
| WO2017147979A1 (en) * | 2016-03-01 | 2017-09-08 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | Method for preparing iron silicon sulfur multi-element composite biochar soil heavy metal conditioner |
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| CN114806584A (en) * | 2022-05-09 | 2022-07-29 | 矿冶科技集团有限公司 | Soil improvement material and preparation method and application thereof |
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| JP4051415B2 (en) * | 2002-11-20 | 2008-02-27 | 謙二郎 栗花落 | Garbage incineration, dust collection, neutralization, and catalytic reaction treatment equipment after incineration, post-catalyst fertilizer plant and its structure |
| CN109809911A (en) * | 2017-11-22 | 2019-05-28 | 深圳市芭田生态工程股份有限公司 | Alkaline fertilizer and preparation method thereof |
| CN112500244A (en) * | 2020-12-02 | 2021-03-16 | 刘劲 | Preparation method of organic fertilizer |
| CN112707465A (en) * | 2020-12-30 | 2021-04-27 | 中国科学院南京土壤研究所 | Composite material for rare earth mining area acidic wastewater treatment and preparation method and application thereof |
| CN113652242A (en) * | 2021-09-17 | 2021-11-16 | 山东省农业科学院 | Acid soil conditioner and preparation method and application thereof |
| CN115353891B (en) * | 2022-10-19 | 2023-03-10 | 矿冶科技集团有限公司 | Soil improvement material and preparation method and application thereof |
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| JP2008239831A (en) * | 2007-03-28 | 2008-10-09 | Oji Paper Co Ltd | Acid soil amending material |
| WO2017147979A1 (en) * | 2016-03-01 | 2017-09-08 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | Method for preparing iron silicon sulfur multi-element composite biochar soil heavy metal conditioner |
| CN106635030A (en) * | 2016-09-20 | 2017-05-10 | 南京工业大学 | Acidic soil conditioner and preparation method and application thereof |
| CN109438101A (en) * | 2018-12-29 | 2019-03-08 | 史丹利化肥（平原）有限公司 | Preparation method, granulating agent and its application of granulating agent |
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