CN112062124A - Activated carbon prepared from domestic solid waste and preparation method and application thereof - Google Patents
Activated carbon prepared from domestic solid waste and preparation method and application thereof Download PDFInfo
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- CN112062124A CN112062124A CN202010941793.2A CN202010941793A CN112062124A CN 112062124 A CN112062124 A CN 112062124A CN 202010941793 A CN202010941793 A CN 202010941793A CN 112062124 A CN112062124 A CN 112062124A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
Abstract
The invention provides activated carbon prepared from domestic solid waste, and a preparation method and application thereof. The method comprises the following steps: (1) taking the compressed and molded domestic solid waste as a carbon source, and dehydrating and carbonizing under protective gas to obtain a carbonized product; (2) activating the carbonized product in the step (1) in steam to obtain an activated product; (3) and (3) carrying out acid leaching on the activated product obtained in the step (2), and carrying out solid-liquid separation to obtain the activated carbon. The carbon source used by the preparation method provided by the invention is domestic solid waste, such as white garbage, waste paper, disposable medical plastic and fabric, has rich source and low cost, and is beneficial to recycling of the solid waste. The activated carbon material prepared by the preparation method provided by the invention has the properties of high specific surface area, stable performance and the like.
Description
Technical Field
The invention belongs to the field of environmental functional materials, and relates to activated carbon, a preparation method and application thereof, in particular to activated carbon prepared from domestic solid wastes, and a preparation method and application thereof.
Background
The domestic solid waste mainly refers to solid waste generated in daily life or activities for providing services for urban daily life, namely urban domestic waste, and mainly comprises resident domestic waste, hospital waste, commercial waste and construction waste (also called muck). With the rapid development of society and the promotion of living needs of people, a great deal of domestic solid waste is generated, for example, although the invention and the use of plastics further accelerate the development speed of human beings, the invention and the use of plastics also become a white pollution problem which is difficult to solve all over the world; and a large amount of disposable medical solid waste greatly influences the surrounding environment.
At present, the following modes are mainly used for treating domestic solid wastes: burying, burning, composting and recycling.
The landfill can be divided into sanitary landfill and non-sanitary landfill, and the main mode used in domestic inaccessible cities and most rural areas is the non-sanitary landfill, and a set of complete sanitary classification, primary treatment and other technical problems are lacked for a long time; for well-developed cities, sanitary landfills account for a significant proportion, such as first-line cities in the north, the world wide, and the like.
Incineration is the best method for realizing harmlessness, reduction and recycling in domestic solid waste treatment, and the volume can be reduced by about 90%. The heat generated by incineration can be used for power generation, and is a better resource scheme. However, the domestic solid waste often contains a large amount of moisture and is even flammable, so that the domestic solid waste can be used only after being separated, crushed, dried and made into garbage fuel, and a certain application scene is provided. However, the ash after incineration still needs to be classified again and screened for reuse.
The compost mainly makes organic substances in the garbage generate biochemical reaction through anaerobic fermentation and aerobic fermentation to generate a substance similar to humus soil, and the substance can be used as a fertilizer and also can generate combustible gas. The compost needs to classify the garbage more thoroughly, so that the garbage such as metal, ceramic and the like is prevented from entering a fermentation tank; contamination with microorganisms and viruses may also occur. The useful components of waste paper, black and nonferrous metals, plastics, fabrics, glass ceramics, leather and rubber, etc. in the garbage are recycled. This is also one of the important measures for protecting the environment.
The recycling mainly refers to the useful components of waste paper, black and nonferrous metals, plastics, fabrics, glass ceramics, leather rubber and the like in the garbage, and can be recycled. This is also one of the important measures for protecting the environment.
The activated carbon is a specially treated carbon material, has a developed pore structure and a higher specific surface area, has double characteristics of physical adsorption and chemical adsorption, and has wide application, such as decolorization and adsorption, gas adsorption, catalysts and carriers in chemical industry, water treatment, desulfurization and deodorization in petroleum industry and the like.
CN103130223A discloses a method for preparing activated carbon by using municipal solid waste as raw material, comprising the following steps: selecting municipal solid waste as a raw material; pretreating the raw materials, including drying, crushing and sieving, weighing the pretreated carbonaceous raw materials, adding KOH powder into the carbonized materials, adding excessive deionized water, and placing the carbonized materials in an oven for drying; and putting the pretreated sample into a porcelain cup, putting the porcelain cup into a quartz tube of a pyrolysis furnace, starting to heat under the condition of introducing nitrogen as protective gas, and pyrolyzing at the temperature to obtain an activated carbon sample.
Although the above scheme can prepare activated carbon using solid waste as a raw material, the surface area and performance of the activated carbon obtained by the above scheme are to be further improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the activated carbon prepared from the domestic solid waste, and a preparation method and application thereof. The preparation method provided by the invention takes the domestic solid waste as the carbon source, and can prepare the activated carbon material with high specific surface area and stable performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for preparing activated carbon from domestic solid waste, comprising the following steps:
(1) taking the compressed and molded domestic solid waste as a carbon source, and dehydrating and carbonizing under protective gas to obtain a carbonized product;
(2) activating the carbonized product in the step (1) in steam to obtain an activated product;
(3) and (3) carrying out acid leaching on the activated product obtained in the step (2), and carrying out solid-liquid separation to obtain the activated carbon.
In the preparation method provided by the invention, the purpose of removing water in the step (1) is to dry the carbon source, as the domestic solid waste can be wet and contains a large amount of water, the water in the carbon source can seriously influence the carbonization process, even the water forms water vapor at high temperature, and accidents can occur when the gas is not exhausted in time; the aim of carbonization is to form a stable carbon material from the carbon source, which is also a product of low specific surface area. The activation in the step (2) aims at forming an activated carbon material with a macroporous, mesoporous and microporous hierarchical pore structure, so that the specific surface area of the activated carbon is improved, and the acid leaching in the step (3) aims at removing metal oxides in the activated carbon (mainly, metal ions in a carbon source are oxidized into the metal oxides in the carbonization process), and simultaneously removing redundant activating agents, generated potassium metal and oxides thereof in the activation process.
The preparation method provided by the invention can fully utilize the domestic solid waste as a carbon source to produce high-value activated carbon, realizes changing waste into valuable, has rich carbon source and low cost, and is beneficial to realizing the reutilization of the solid waste.
The preparation method provided by the invention is simple and easy to implement, easy to control in operation and suitable for popularization and application.
The following is a preferred technical solution of the present invention, but not a limitation to the technical solution provided by the present invention, and the technical objects and advantageous effects of the present invention can be better achieved and achieved by the following preferred technical solution.
As a preferable technical scheme of the invention, the domestic solid waste in the step (1) comprises any one of domestic white garbage, waste paper, disposable medical plastics or fabrics or a combination of at least two of the domestic white garbage, the waste paper and the disposable medical plastics or fabrics.
Preferably, the domestic solid waste in the step (1) is crushed and then is subjected to compression molding.
Preferably, the crushing is performed according to the type of the domestic solid waste.
As a preferred technical scheme of the invention, the protective gas in the step (1) comprises nitrogen and/or argon.
Preferably, the temperature for removing water in step (1) is 120-.
Preferably, the water removal in step (1) is carried out for 1-5h, such as 1h, 2h, 3h, 4h or 5h, but not limited to the recited values, and other values not recited in the range of values are also applicable.
Preferably, the carbonization temperature in step (1) is 400-600 ℃, such as 400 ℃, 450 ℃, 500 ℃, 550 ℃ or 600 ℃, but not limited to the recited values, and other unrecited values within the range of values are equally applicable. In the present invention, if the carbonization temperature has an influence on the pore structure of the activated carbon and also on the yield of the activated carbon, the temperature above or below the preferred value may have an adverse effect.
Preferably, the carbonization time in step (1) is 1 to 4 hours, such as 1 hour, 2 hours, 3 hours, 4 hours, etc., but not limited to the recited values, and other values not recited within the range of values are also applicable.
In a preferred embodiment of the present invention, the steam in step (2) is steam.
Preferably, the temperature of the steam in step (2) is 700-950 ℃, such as 700 ℃, 750 ℃, 800 ℃, 850 ℃, 900 ℃ or 950 ℃, but not limited to the recited values, and other unrecited values within the range of values are equally applicable. In the present invention, if the temperature of the steam is too high, the yield is reduced; if the temperature of the steam is too low, the specific surface area of the product is small.
In a preferred embodiment of the present invention, the activation time in step (2) is 4 to 36 hours, for example, 4 hours, 6 hours, 12 hours, 24 hours, or 36 hours, but the activation time is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
As a preferable technical scheme of the invention, the acid used in the acid leaching in the step (3) comprises hydrochloric acid and/or sulfuric acid.
Preferably, the acid used in the acid leaching in step (3) has a concentration of 0.1 to 2mol/L, such as 0.1mol/L, 0.5mol/L, 1mol/L, 1.5mol/L, or 2mol/L, but is not limited to the recited values, and other values not recited in the numerical range are also applicable.
Preferably, the acid leaching time in step (3) is 0.5-5h, such as 0.5h, 1h, 2h, 3h, 4h or 5h, etc.
As a preferable embodiment of the present invention, the solid-liquid separation in the step (3) is filtration separation.
Preferably, step (3) further comprises: washing the solid extracted by solid-liquid separation with water to neutrality.
As a further preferable technical scheme of the preparation method, the method comprises the following steps:
(1) crushing the domestic solid waste according to the type of the domestic solid waste, then compressing and molding, taking the compressed and molded domestic solid waste as a carbon source, dehydrating for 1-5h at the temperature of 120-plus-one and 200 ℃ under protective gas, and carbonizing for 1-4h at the temperature of 400-plus-one and 600 ℃ to obtain a carbonized product;
wherein the domestic solid waste comprises any one or a combination of at least two of domestic white garbage, waste paper, disposable medical plastic or fabric;
(2) activating the carbonization product in the step (1) in water vapor at the temperature of 700-950 ℃ for 4-36h to obtain an activated product;
(3) and (3) carrying out acid leaching on the activated product in the step (2) by hydrochloric acid with the concentration of 0.1-2mol/L for 0.5-5h, filtering to obtain a solid, and washing the solid to be neutral by water to obtain the activated carbon.
The further preferable technical proposal is that firstly, domestic solid waste, such as white garbage, waste paper, disposable medical plastic, fabric and the like is crushed, compressed and molded; secondly, carbonizing the formed solid waste carbon source at high temperature under the protection of nitrogen to obtain carbide; thirdly, activating the carbide by water vapor to carry out physical activation; finally, impurities are removed by hydrochloric acid and washed to neutrality by water to obtain activated carbon with high specific surface area. The activated carbon obtained by the method can reveal the parameters such as the morphology, the pore channel distribution and the like of the composite material by various characterization means.
In a second aspect, the invention provides activated carbon prepared from domestic solid waste, wherein the activated carbon prepared from domestic solid waste is prepared by the preparation method in the first aspect.
The activated carbon prepared from the domestic solid waste provided by the invention has the properties of high specific surface area, stable performance and the like.
In a third aspect, the invention provides the use of the activated carbon prepared from the domestic solid waste as described in the second aspect, for adsorbing indoor formaldehyde, for adsorbing antibiotics in sewage, or for serving as a catalyst carrier.
Compared with the prior art, the invention has the following beneficial effects:
(1) the carbon source used by the preparation method provided by the invention is domestic solid waste, such as white garbage, waste paper, disposable medical plastic and fabric, has rich source and low cost, and is beneficial to recycling of the solid waste.
(2) The activated carbon material prepared by the preparation method provided by the invention has high specific surface area and stable performance.
(3) The activated carbon prepared from the domestic solid waste provided by the invention has a high specific surface area, and can be widely used in the fields of adsorbing indoor formaldehyde, adsorbing antibiotics in sewage, catalyst carriers and the like.
(4) The preparation method provided by the invention is simple and easy to implement, easy to control in operation and suitable for popularization and application.
Drawings
FIG. 1 is a scanning electron micrograph of the white garbage activated carbon prepared in example 1;
FIG. 2 is a scanning electron micrograph of the waste activated carbon prepared in example 2;
FIG. 3 is a scanning electron micrograph of the primary medical plastic activated carbon prepared in example 3;
FIG. 4(a) is a scanning electron microscope image of the activated carbon of the fabric prepared in example 4 before activation;
fig. 4(b) is a scanning electron microscope image of the activated carbon of the fabric prepared in example 4 after activation.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
The following are typical but non-limiting examples of the invention:
example 1
This example prepared activated carbon as follows:
firstly, classifying domestic white garbage from domestic solid waste, crushing, and compressing and molding; secondly, dehydrating the formed solid waste carbon source for 3 hours at 150 ℃ in a nitrogen atmosphere, and carbonizing the formed solid waste carbon source for 2 hours at 550 ℃ in the nitrogen atmosphere to obtain carbide; thirdly, activating the carbide for 6 hours by using water vapor at the temperature of 900 ℃ to obtain activated carbon; soaking the activated carbon in 0.2mol/L hydrochloric acid for 5h to remove impurities, filtering, washing with water to be neutral, and drying to obtain the activated carbon.
The scanning electron microscope image of the white waste activated carbon prepared in this example is shown in fig. 1, and it can be clearly seen that many nanometer-scale pore channels are formed on the surface, which fully illustrates a series of operations adopted by the present invention to convert white waste into an activated carbon material.
Example 2
This example is the same as the method for preparing activated carbon of example 1, except that the domestic solid waste uses waste paper instead of the domestic white garbage.
As shown in fig. 2, a scanning electron microscope image of the waste paper activated carbon prepared in this embodiment is mainly made of fibers, and the activated carbon prepared by the scheme provided by the present invention has many pores, so that the activated carbon has a high surface area intuitively.
Example 3
This example is the same as the method of example 1 for preparing activated carbon, except that the domestic solid waste uses a disposable medical plastic instead of the domestic white garbage.
The scanning electron microscope image of the primary medical plastic activated carbon prepared in this embodiment is shown in fig. 3, and since the primary medical plastic is difficult to decompose, certain pores are generated during carbonization and activation, which can also be described by the scanning electron microscope image.
Example 4
This example was the same as the method of example 1 for preparing activated carbon, except that the domestic solid waste used fabric instead of the domestic white garbage.
In the preparation method provided by this embodiment, a scanning electron microscope image of the activated fabric carbon before activation is shown in fig. 4(a), and a scanning electron microscope image of the activated fabric carbon after activation is shown in fig. 4(b), which clearly shows that a part of the layered exfoliation is present on the surface of fig. 4(b) compared with that of fig. 4(a), mainly due to the activation process, and is one of the important reasons for increasing the surface area.
Example 5
This example prepared activated carbon as follows:
firstly, classifying domestic white garbage from domestic solid waste, crushing, and compressing and molding; secondly, dehydrating the formed solid waste carbon source for 5 hours at 120 ℃ in a nitrogen atmosphere, and carbonizing the formed solid waste carbon source for 4 hours at 400 ℃ in the nitrogen atmosphere to obtain carbide; thirdly, activating the carbide by using water vapor at 700 ℃ for 36 hours to obtain activated carbon; soaking activated carbon in 2mol/L hydrochloric acid for 0.5h to remove impurities, filtering, washing with water to neutrality, and drying to obtain the activated carbon.
Example 6
This example prepared activated carbon as follows:
firstly, classifying waste paper from domestic solid waste, crushing, and compressing and molding; secondly, dehydrating the formed solid waste carbon source for 1 hour at 200 ℃ in a nitrogen atmosphere, and carbonizing the formed solid waste carbon source for 1 hour at 600 ℃ in the nitrogen atmosphere to obtain carbide; thirdly, activating the carbide by utilizing water vapor with the temperature of 950 ℃ for 4-hours to obtain activated carbon; soaking the activated carbon in 0.1mol/L hydrochloric acid for 5 hours to remove impurities, filtering, washing with water to be neutral, and drying to obtain the activated carbon.
Example 7
This example prepared activated carbon as follows:
firstly, classifying domestic white garbage from domestic solid waste, crushing, and compressing and molding; secondly, dehydrating the formed solid waste carbon source for 3 hours at 180 ℃ in a nitrogen atmosphere, and carbonizing the formed solid waste carbon source for 1 hour at 600 ℃ in the nitrogen atmosphere to obtain carbide; thirdly, activating the carbide for 6 hours by using water vapor at the temperature of 900 ℃ to obtain activated carbon; soaking the activated carbon with 0.5mol/L hydrochloric acid for 4 hours to remove impurities, filtering, washing with water to be neutral, and drying to obtain the activated carbon.
Example 8
This example prepared activated carbon as follows:
firstly, classifying waste paper from domestic solid waste, crushing, and compressing and molding; secondly, dehydrating the formed solid waste carbon source for 3.5 hours at 160 ℃ in a nitrogen atmosphere, and carbonizing the formed solid waste carbon source for 3 hours at 500 ℃ in the nitrogen atmosphere to obtain carbide; thirdly, activating the carbide for 30 hours by using water vapor at the temperature of 750 ℃ to obtain activated carbon; soaking activated carbon in 1mol/L hydrochloric acid for 1h to remove impurities, filtering, washing with water to neutrality, and drying to obtain the activated carbon.
Comparative example 1
This comparative example was identical to example 1 except that no water was removed.
Comparative example 2
This comparative example was conducted in the same manner as example 1 except that high-temperature carbonization was not conducted.
Comparative example 3
This comparative example was identical to example 1 except that no steam activation was performed, and the other raw materials and operations were the same.
Test method
The electron micrographs shown in examples 1 to 4 were obtained by scanning electron microscopy of JSM-7001F, Japan.
The adsorption/desorption curves of each example and comparative example were measured in a liquid nitrogen atmosphere using NOVA2000E of corna instruments, usa, and the specific surface area thereof was calculated.
The test results are shown in the following table:
TABLE 1
It can be seen from the above examples and comparative examples that the carbon source used in the preparation method provided in examples 1 to 8 is domestic solid waste, such as white garbage, waste paper, disposable medical plastic, fabric, and is abundant in source, low in cost, and helpful for recycling the solid waste. And the activated carbon materials prepared in the examples 1 to 8 have high specific surface area and stable performance. Since the activated carbon prepared in examples 1 to 8 has a high specific surface area, it can be widely used in the fields of adsorbing indoor formaldehyde, adsorbing antibiotics in sewage, catalyst carriers, and the like.
Comparative example 1 results in direct influence on the degree of carbonization, even in that only a part of the carbon source was carbonized, because water removal was not performed.
Comparative example 2 does not perform high temperature carbonization, which affects the steam activation process, and even fails to perform steam activation. .
Comparative example 3 results in a smaller specific surface area of the product because steam activation was not performed.
The applicant states that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed methods, i.e. it is not meant that the present invention must rely on the above detailed methods for its implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The method for preparing the activated carbon from the domestic solid waste is characterized by comprising the following steps of:
(1) taking the compressed and molded domestic solid waste as a carbon source, and dehydrating and carbonizing under protective gas to obtain a carbonized product;
(2) activating the carbonized product in the step (1) in steam to obtain an activated product;
(3) and (3) carrying out acid leaching on the activated product obtained in the step (2), and carrying out solid-liquid separation to obtain the activated carbon.
2. The method according to claim 1, wherein the domestic solid waste of step (1) comprises any one of or a combination of at least two of domestic white waste, waste paper, disposable medical plastics or fabrics;
preferably, the domestic solid waste in the step (1) is crushed and then is subjected to compression molding;
preferably, the crushing is performed according to the type of the domestic solid waste.
3. The method of claim 1 or 2, wherein the protective gas of step (1) comprises nitrogen and/or argon;
preferably, the temperature for removing water in the step (1) is 120-200 ℃;
preferably, the water removal time of the step (1) is 1-5 h;
preferably, the temperature of the carbonization in the step (1) is 400-600 ℃;
preferably, the carbonization time in step (1) is 1-4 h.
4. The method according to any one of claims 1 to 3, wherein the steam of step (2) is water vapor;
preferably, the temperature of the steam in step (2) is 700-950 ℃.
5. The method according to any one of claims 1 to 4, wherein the activation time in step (2) is 4 to 36 hours.
6. The process according to any one of claims 1 to 5, wherein the acid used in the acid leaching in step (3) comprises hydrochloric acid and/or sulfuric acid;
preferably, the acid used in the acid leaching in the step (3) has the concentration of 0.1-2 mol/L;
preferably, the acid leaching time in the step (3) is 0.5-5 h.
7. The process according to any one of claims 1 to 6, wherein the solid-liquid separation of step (3) is a filtration separation;
preferably, step (3) further comprises: washing the solid extracted by solid-liquid separation with water to neutrality.
8. The method according to any one of claims 1-7, characterized in that the method comprises the steps of:
(1) crushing the domestic solid waste according to the type of the domestic solid waste, then compressing and molding, taking the compressed and molded domestic solid waste as a carbon source, dehydrating for 1-5h at the temperature of 120-plus-one and 200 ℃ under protective gas, and carbonizing for 1-4h at the temperature of 400-plus-one and 600 ℃ to obtain a carbonized product;
wherein the domestic solid waste comprises any one or a combination of at least two of domestic white garbage, waste paper, disposable medical plastic or fabric;
(2) activating the carbonization product in the step (1) in water vapor at the temperature of 700-950 ℃ for 4-36h to obtain an activated product;
(3) and (3) carrying out acid leaching on the activated product in the step (2) by hydrochloric acid with the concentration of 0.1-2mol/L for 0.5-5h, filtering to obtain a solid, and washing the solid to be neutral by water to obtain the activated carbon.
9. An activated carbon prepared from domestic solid waste, which is prepared by the preparation method of any one of claims 1 to 8.
10. The use of the activated carbon produced from domestic solid waste according to claim 9, wherein the activated carbon produced from domestic solid waste is used for adsorbing indoor formaldehyde, adsorbing antibiotics in sewage, or as a catalyst carrier.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705187A (en) * | 2020-12-23 | 2021-04-27 | 同济大学 | Carbon-based catalyst based on organic household garbage, preparation method of carbon-based catalyst, pyrolysis product prepared from carbon-based catalyst and used as fuel, and method |
| CN116924398A (en) * | 2023-07-31 | 2023-10-24 | 昆明理工大学 | Method for preparing activated carbon from municipal solid waste and product thereof |
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