CN110317611A - A kind of metal oxide/biology carbon composite, preparation method and its application - Google Patents
A kind of metal oxide/biology carbon composite, preparation method and its application Download PDFInfo
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- CN110317611A CN110317611A CN201910678753.0A CN201910678753A CN110317611A CN 110317611 A CN110317611 A CN 110317611A CN 201910678753 A CN201910678753 A CN 201910678753A CN 110317611 A CN110317611 A CN 110317611A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of metal oxide/charcoal composite material and preparation method, the metal oxide/biology carbon composite includes bone black and the metal oxide that is carried on bone black, and the metallic element in metal oxide is soil nutrient elements.Metal oxide provided by the invention/biology carbon composite agent is acted on metal oxide, apatite and charcoal ingredient, can achieve the effect that improve soil physico-chemical property, efficient restoration of soil polluted by heavy metal simultaneously.Metal oxide provided by the invention/biology carbon composite preparation method includes: mixing animal skeleton and metal salt solution, carries out pyrolysis processing to mixed raw material.The preparation method is simple and efficient, is low in cost, can play the role of becoming agriculture waste resource as high-value product.The present invention also provides a kind of metal oxide/biology carbon composite applications.
Description
Technical field
The present invention relates to biotic environment technical field of material, and in particular to a kind of metal oxide/charcoal is compound
Material, preparation method and its application.
Background technique
Economic fast development and size of population surge keep global environmental pollution situation increasingly serious, wherein heavy metal-polluted soil
Have become one of main problem of environmental pollution.Heavy metal-polluted soil has high toxicity, is not easily decomposed, easily spreads and pass through food chain
The features such as passing can dramatically increase the disease incidence of the malignant diseases such as cancer, cause to seriously threaten to people's health and ecological environment.This
Outside, the quality and yield for the crop cultivated on heavy-metal contaminated soil also occur significantly decline, cause potential grain and
Food-safety problem.
Fixation in situ recovery technique is a kind of heavy metal pollution of soil Treatment process of high-efficiency and economic, by adding into soil
Enter to be passivated agent material, to adjust the valence state and form of heavy metal in soil, reduces its migration and biology in soil environment
Validity.
Charcoal is the surface for being pyrolyzed preparation under the conditions of anoxybiotic, few oxygen and relative low temperature (< 700 DEG C) by biological organic matter
The carbon containing aromatising substance of oxygen-containing functional group rich in, it is extensive, without secondary pollution and low in cost with raw material is prepared
The advantages that, it is concerned in heavy metal-polluted soil reparation and soil quality improvement tool positive effect.But charcoal is directly used
In soil passivation, the passivation of the larger and single charcoal of amount of application and heavy metal-polluted soil is limited in practice.
Hydroxyapatite (Ca5(PO4)3(OH)2, HAP) have porous structure, containing the soil nutrients such as hydroxyl and calcium, phosphorus at
It is divided into the stabilization of heavy metal-polluted soil and improves the hot spot material of soil physico-chemical property.However, using conventional chemical method preparation
That there are economic costs is higher by HAP, not can be carried out large-scale industrial application, directly applies in soil environment that reduce soil organic
Matter content, destruction soil nutrient elements are balanced and there are the risks of eutrophication.
It is to be solved by this invention be exactly in the prior art soil passivator cannot have both it is low in cost, improve soil physical chemistry
The problem of property, efficient restoration of soil polluted by heavy metal.
Summary of the invention
Low in cost, improvement soil physico-chemical property, height cannot be had both to solve above-mentioned soil passivator in the prior art
Imitate restoration of soil polluted by heavy metal the problem of, the present invention provides one kind with metal oxide, apatite and charcoal at
The metal oxide being allocated as/biology carbon composite, preparation method and its application.
In order to achieve the above object of the invention, the present invention provides a kind of metal oxide/biology carbon composite, including bone black
With the metal oxide being carried on the bone black, the metallic element in the metal oxide is soil nutrient elements.
Further, the bone black is by animal bone powder through pyrogenous origin, and the animal bone powder is passed through by animal skeleton
It crushes and is formed, the animal skeleton is selected from least one of pig bone, ox bone, sheep bone, chicken bone, duck bone and fish-bone.
Further, the metal oxide is ferriferous oxide and Mn oxide.
Further, the ferriferous oxide is by water-soluble iron salts through pyrogenous origin；The Mn oxide is by water-soluble
Property manganese salt is through pyrogenous origin.
Further, the water-soluble iron salts are iron chloride, frerrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate and sulphur
At least one of sour ferrous iron；The water-soluble manganese salt is at least one in potassium permanganate, manganese chloride, manganese sulfate and manganese nitrate
Kind.
The present invention also provides a kind of preparation methods of above-mentioned metal oxide/biology carbon composite, comprising:
S1, animal bone powder is provided, the animal bone powder is impregnated in the aqueous solution of metalline, mixed after dry
Raw material；
S2, under the conditions of protective atmosphere, to the mixed raw material carry out pyrolysis processing, obtain metal oxide/charcoal
Composite material.
Further, the metal salt is water-soluble iron salts and water-soluble manganese salt, and controls rubbing for ferro element and manganese element
You are than being 1~5:1~5；The ratio between gross mass of the quality of the animal bone powder and the molysite and the manganese salt for 1~10:1~
5。
Further, in the step S2, the protective atmosphere is at least one of nitrogen, helium, neon and argon gas；
The condition of the pyrolysis processing are as follows: be warming up to 500 DEG C~700 DEG C with 5 DEG C/min~25 DEG C/min heating rate.
Further, the step S1 is specifically included: dispersing the animal bone powder in the aqueous solution of the metalline
In, after ultrasonic 15min~180min, impregnate the animal bone powder 2h~for 24 hours.
The present invention also provides a kind of above-mentioned metal oxide/biology carbon composite applications: the metal is aoxidized
Object/biology carbon composite is added in heavy-metal contaminated soil, and carry out in-situ immobilization is added water after mixing.
Metal oxide provided by the invention/biology carbon composite preparation method is made with metal salt and animal bone powder
The metal oxidation with the effect of metal oxide, apatite and charcoal ingredient is obtained by pyrolysis processing for raw material
Object/biology carbon composite.Metal oxide/biology carbon composite can reach simultaneously improves soil physico-chemical property, efficient repairing
The effect of multiple heavy-metal contaminated soil.Metal oxide provided by the invention/biology carbon composite preparation method is simply high
It imitates, is low in cost, can play the role of becoming agriculture waste resource as high-value product.
Detailed description of the invention
What is carried out in conjunction with the accompanying drawings is described below, above and other aspect, features and advantages of the embodiment of the present invention
It will become clearer, in attached drawing:
Fig. 1 is metal oxide/biology carbon composite preparation method flow chart based on the present invention；
Fig. 2 and Fig. 3 is SEM result figure of the ox bone charcoal under different amplification scales in embodiment 1；
Fig. 4 and Fig. 5 is SEM result of the iron and manganese oxides/bone black composite material under different amplification scales in embodiment 2
Figure.
Specific embodiment
Hereinafter, with reference to the accompanying drawings to detailed description of the present invention embodiment.However, it is possible to come in many different forms real
The present invention is applied, and the present invention should not be construed as limited to the specific embodiment illustrated here.On the contrary, providing these implementations
Example is in order to explain the principle of the present invention and its practical application, to make others skilled in the art it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.
The present inventor be based on soil passivator in the prior art cannot have both improve soil physico-chemical property, efficiently
The problem of restoration of soil polluted by heavy metal, the present invention provides one kind with metal oxide, apatite and charcoal ingredient
The metal oxide of effect/biology carbon composite, preparation method and its application.
The embodiment of the invention provides a kind of metal oxide/biology carbon composite preparation methods, referring to Fig. 1, packet
Include step:
S1, provide animal bone powder, disperse the animal bone powder in the aqueous solution of the metalline impregnate 2h~
For 24 hours, while ultrasound suspending liquid 15min~180min, mixed raw material is obtained after dry.
Wherein, animal bone powder is that the leftover bits and pieces processed by animal waste bone or meat products is formed through crushing, main
Also to refer to animal skeleton, the animal skeleton is at least one of pig bone, ox bone, sheep bone, chicken bone, duck bone and fish-bone, this
Place only lists the common animal skeleton in part.In order to obtain the more excellent product of adsorption effect, preferably animal skeleton is carried out
The animal bone powder obtained after crushing is mixed with agricultural wastes.
Metallic element in metal salt is soil nutrient elements, preferably molysite and manganese salt.
Molysite is at least one of iron chloride, frerrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate and ferrous sulfate.
Manganese salt is at least one of potassium permanganate, manganese chloride, manganese sulfate and manganese nitrate.
Further, controlling the molar ratio of ferro element and manganese element in the metal salt is 1~5:1~5；
Further, the ratio between gross mass of the quality of animal bone powder and molysite and manganese salt is 1~10:1~5.
S2, under the conditions of protective atmosphere, to the mixed raw material carry out pyrolysis processing, obtain metal oxide/charcoal
Composite material.
Protective atmosphere is at least one of nitrogen, helium, neon and argon gas, preferably lower-cost nitrogen.
Further, the condition of pyrolysis processing are as follows: with 5 DEG C/min~25 DEG C/min heating rate be warming up to 500 DEG C~
700 DEG C, then keep 0.5h~3h.
It is worth noting that can be oxidized in air when metal salt is dried after impregnating, and raw during pyrolysis
Also contain certain oxygen element in material.Therefore, even if non-oxygen metal salt (such as selecting chlorination metal salt) is selected to make
For reaction raw materials, what is obtained after pyrolysis under the conditions of protective atmosphere with animal bone powder is also that metal oxide/charcoal is multiple
Condensation material.
Metal oxide provided by the invention/biology carbon composite preparation method is to utilize waste animal bone powder system
Made of standby, preparation cost is low and is conducive to the recycling of waste resource, and realization turns waste into wealth and carries out high value utilization
Effect.
The embodiment of the invention provides a kind of metal oxide/biology carbon composite, including bone black and it is carried on described
Metal oxide on bone black.
Wherein, bone black is by animal bone powder through pyrogenous origin.Specifically, animal bone powder be by animal waste bone or
The leftover bits and pieces of person's meat products processing is formed through crushing, and mainly also refers to animal skeleton.Animal skeleton be pig bone, ox bone, sheep bone,
At least one of chicken bone, duck bone and fish-bone only list the common animal skeleton in part herein.Bone black is rich in biological hydroxyl phosphorus
The ASI systematic approach such as lime stone, nitrogen and phosphorus have the characteristics such as large specific surface area, pH value are high, pore structure is abundant.
Metallic element in metal oxide is soil nutrient elements.Metal oxide is preferably ferriferous oxide and manganese oxidation
Object.
Ferriferous oxide is by water-soluble iron salts through pyrogenous origin.Water-soluble iron salts are iron chloride, frerrous chloride, nitric acid
At least one of iron, ferrous nitrate, ferric sulfate and ferrous sulfate.
Mn oxide is by water-soluble manganese salt through pyrogenous origin.Water-soluble manganese salt is potassium permanganate, manganese chloride, manganese sulfate
At least one of with manganese nitrate.
Animal bone powder prepared by the present invention carries out pyrogenically prepared metal oxide/life after the aqueous solution of metal salt dipping
Object carbon composite, the substance that both can have formed high stability for heavy metal in soil (copper, lead, cadmium and zinc etc.) provide complexing position
Point, and can increase soil redox potential, improve soil physico-chemical property, keep the biological effectiveness of heavy metal ion further
It reduces.
Specifically, charcoal is that pyrolysis is made under the conditions of anoxybiotic, few oxygen and relative low temperature (< 700 DEG C) by biological organic matter
The carbon containing aromatising substance of standby surface oxygen-containing functional group rich in, have prepare raw material it is extensive, it is without secondary pollution and
The advantages that low in cost, is concerned in heavy metal-polluted soil reparation and soil quality improvement tool positive effect.Wherein, this hair
The bright bone black material prepared using animal skeleton waste as raw material, carbon are distributed in good biocompatibility and work
In the porous structure of the natural mineral hydroxyapatite of property, containing organic matter and the soil nutrient elements ingredient such as hydroxyl and calcium, phosphorus,
As the stabilization of heavy metal-polluted soil and the ideal material of improvement soil physico-chemical property.
The main composition of soil is in addition to mineral and organic matter, there is also natural minerals such as a large amount of iron and manganese oxides, and iron
Mn oxide plays an important role during soil from heavy metal pollution.During compound cracking charcoal, iron-
The introducing of Mn oxide can improve the building of material internal structure and improve the physicochemical property of soil, including promote Soil oxidation
The formation of reduction potential, the promotion for being conducive to edaphon vigor and good plant rhizosphere environment formation.Therefore, by bone
The compound preparation of charcoal and iron-manganese oxide not only facilitates soil passivation agent material and is mentioned to heavy metal-polluted soil stabilizing power
It rises, also helps soil physico-chemical property and gradually improve, can directly be applied caused by soil to avoid a large amount of of hydroxyapatite
Environmental risk can significantly improve soil fertility.
The embodiment of the invention also provides a kind of applications of metal oxide/biology carbon composite.By metal oxide/
Biological carbon composite is added in heavy-metal contaminated soil, is added water after the two is mixed, and heavy-metal contaminated soil is carried out
In-situ immobilization.
The soil of in-situ immobilization can be acid, neutral or alkalinity heavy-metal contaminated soil.
Illustrate below with reference to specific embodiment above-mentioned metal oxide/biology carbon composite of the invention, its
Preparation method and applications, it is understood by one of ordinary skill in the art to be, following embodiments be only the above-mentioned metal oxide of the present invention/
Biological carbon composite, preparation method and its specific example of application, rather than limit its whole.
Embodiment 1
The bovine bone powder to pulverize and sieve is put into crucible, is placed in the Muffle furnace of nitrogen protection, with the liter of 10 DEG C/min
Warm rate is warming up to 600 DEG C, then continues to be pyrolyzed 2.0h at such a temperature；Continue logical nitrogen after the completion of pyrolysis, makes in Muffle furnace
Temperature is down to room temperature, takes out black bone black.
Ox bone charcoal is scanned using scanning electron microscope (SEM), the result of acquisition is as shown in Figures 2 and 3.From figure
2 and Fig. 3 can be seen that ox bone charcoal and random geometry particle, surface relative smooth be presented, and contain a large amount of holes.
Embodiment 2
The fishbone dust to pulverize and sieve is dispersed in the aqueous solution containing ferric nitrate and potassium permanganate, ferric nitrate and height are controlled
The gross mass of potassium manganate and the mass ratio of fishbone dust are 1:1, and the ratio between amount of substance of Fe and Mn is 1:1；By mixed raw material
Ultrasound 15min is carried out, stirs evenly, dry.Mixed raw material after drying is put into crucible, the Muffle of nitrogen protection is placed in
In furnace, 600 DEG C are warming up to the heating rate of 10 DEG C/min, then continues to be pyrolyzed 2.0h at such a temperature；After the completion of pyrolysis after
Continuous logical nitrogen, makes Muffle in-furnace temperature be down to room temperature, takes out black thermal decomposition product, be ground up, sieved acquisition iron and manganese oxides/bone black
Composite material.
SEM scanning is carried out to above-mentioned iron and manganese oxides provided in this embodiment/bone black composite material, the result of acquisition is as schemed
Shown in 4 and Fig. 5.As can be seen from Figure 4 and Figure 5, iron and manganese oxides/bone black composite material includes fish-bone charcoal, ferriferous oxide and manganese
The particulate load of the particle of oxide, ferriferous oxide and Mn oxide is on fish-bone charcoal, and particle is nanoscale.
The present embodiment also provides above-mentioned iron and manganese oxides/bone black composite material answering in restoration of soil polluted by heavy metal
With:
Tongling, Anhui Province somewhere copper tailing topsoil (0cm~20cm) is taken, which is successively carried out to reject gravel and broken
Root natural air drying, is mixed, is pulverized, after the processing of 18 mesh nylon mesh excessively, as trying soil.PH value for trying soil is 7.12,
It is in neutrality, moisture content 5.71%, Available Cu content are 598.0mg/kg.
For trying the test method of soil: weighing 30g for trying soil, weigh 0.15g and 0.6g iron and manganese oxides/bone black respectively
Composite material will be uniformly mixed for examination soil and soil passivator as soil passivator, the water of 30.0mL is added, fixes 21
It.The test of heavy metal available state is carried out after air-drying processed soil after 21 days: being weighed 10.0g and is air-dried soil, uses 20mL
DTPA extracts the Available Cu in soil.It is as shown in table 1 through the soil conditions of soil passivator before and after the processing for examination soil.
Table 1 is for the soil conditions before and after examination soil application soil passivator
Embodiment 3
The Os Sus domestica powder to pulverize and sieve is dispersed in the aqueous solution containing iron chloride and manganese sulfate, iron chloride and sulfuric acid are controlled
The gross mass of manganese and the mass ratio of Os Sus domestica powder are 1:1, and the ratio between amount of substance of Fe and Mn is 1:4；By mixed raw material ultrasound
60min, it stirs evenly, dry.Mixed raw material after drying is put into crucible, is placed in the Muffle furnace of nitrogen protection, with
The heating rate of 10 DEG C/min is warming up to 600 DEG C, then continues to be pyrolyzed 2.0h at such a temperature；Continue logical nitrogen after the completion of pyrolysis
Gas makes Muffle in-furnace temperature be down to room temperature, takes out black thermal decomposition product, is ground up, sieved acquisition iron and manganese oxides/bone black composite wood
Material.
Iron and manganese oxides provided in this embodiment/bone black composite material includes pig bone charcoal, ferriferous oxide and Mn oxide
The particulate load of particle, ferriferous oxide and Mn oxide is on pig bone charcoal.
The present embodiment also provides above-mentioned iron and manganese oxides/bone black composite material answering in restoration of soil polluted by heavy metal
With:
Tongling, Anhui Province somewhere copper tailing topsoil (0cm~20cm) is taken, which is successively carried out to reject gravel and broken
Root natural air drying, is mixed, is pulverized, after the processing of 18 mesh nylon mesh excessively, as trying soil.PH value for trying soil is 7.12,
It is in neutrality, moisture content 5.71%, Available Cu content are 598.0mg/kg.
Using embodiment 2 test method to for examination soil test, for examination soil through soil passivator before and after the processing
Soil conditions it is as shown in table 2.
Table 2 is for the soil conditions before and after examination soil application soil passivator
Embodiment 4
The bovine bone powder to pulverize and sieve is dispersed in the aqueous solution containing iron chloride and manganese nitrate, iron chloride and nitric acid are controlled
The gross mass of manganese and the mass ratio of bovine bone powder are 1:1, and the ratio between amount of substance of Fe and Mn is 1:2；By mixed raw material ultrasound
90min, it stirs evenly, dry.Mixed raw material after drying is put into crucible, is placed in the Muffle furnace of nitrogen protection, with
The heating rate of 15 DEG C/min is warming up to 500 DEG C, continues to be pyrolyzed 2.0h at such a temperature；Continue logical nitrogen after the completion of pyrolysis, makes
Muffle in-furnace temperature is down to room temperature, takes out black thermal decomposition product, is ground up, sieved acquisition iron and manganese oxides/bone black composite material.
Iron and manganese oxides provided in this embodiment/bone black composite material includes ox bone charcoal, ferriferous oxide and Mn oxide
The particulate load of particle, ferriferous oxide and Mn oxide is on ox bone charcoal.
The present embodiment also provides above-mentioned iron and manganese oxides/bone black composite material answering in restoration of soil polluted by heavy metal
With:
Fuyang, Zhejiang zinc smelting factory pollution arable land topsoil (0~20cm) is taken, rejecting gravel is successively carried out to the soil
After stone and broken, the processing for natural air drying, mixing, pulverizing 18 mesh nylon mesh, as trying soil.Its soil pH value is
7.63, it is respectively 230mg/kg and 36.9mg/ in alkalescent, moisture content 13.71%, Available zinc and available Cd content
kg。
Using embodiment 2 test method to for examination soil test, for examination soil through soil passivator before and after the processing
Soil conditions it is as shown in table 3.
Table 3 is for the soil conditions before and after examination soil application soil passivator
Embodiment 5
The chick bone powder to pulverize and sieve is dispersed in the aqueous solution containing frerrous chloride and manganese chloride, control frerrous chloride and
The gross mass of manganese chloride and the mass ratio of chick bone powder are 1:1, and the ratio between amount of substance for controlling Fe and Mn is 1:4；It will mixing
Raw material ultrasound 60min, it is uniformly mixed, is dry.Mixed raw material after drying is put into crucible, the Muffle of nitrogen protection is placed in
In furnace, 600 DEG C are warming up to the heating rate of 10 DEG C/min, then continues to be pyrolyzed 2.0h at such a temperature；After the completion of pyrolysis after
Continuous logical nitrogen, makes Muffle in-furnace temperature be down to room temperature, takes out black thermal decomposition product, be ground up, sieved acquisition iron and manganese oxides/bone black
Composite material.
Iron and manganese oxides provided in this embodiment/bone black composite material includes ox bone charcoal, ferriferous oxide and Mn oxide
The particulate load of particle, ferriferous oxide and Mn oxide is on chicken bone black.
The present embodiment also provides above-mentioned iron and manganese oxides/bone black composite material answering in restoration of soil polluted by heavy metal
With:
Fuyang, Zhejiang zinc smelting factory pollution arable land topsoil (0~20cm) is taken, rejecting gravel is successively carried out to the soil
After stone and broken, the processing for natural air drying, mixing, pulverizing 18 mesh nylon mesh, as trying soil.Its soil pH value is
7.63, it is respectively 230mg/kg and 36.9mg/ in alkalescent, moisture content 13.71%, Available zinc and available Cd content
kg。
Using embodiment 2 test method to for examination soil test, for examination soil through soil passivator before and after the processing
Soil conditions it is as shown in table 4.
Table 4 is for the soil conditions before and after examination soil application soil passivator
Although the present invention has shown and described referring to specific embodiment, it should be appreciated by those skilled in the art that:
In the case where not departing from the spirit and scope of the present invention being defined by the claims and their equivalents, can carry out herein form and
Various change in details.
Claims (10)
1. a kind of metal oxide/biology carbon composite, which is characterized in that including bone black and the gold being carried on the bone black
Belong to oxide, the metallic element in the metal oxide is soil nutrient elements.
2. metal oxide according to claim 1/biology carbon composite, which is characterized in that the bone black is by moving
Object bone meal is through pyrogenous origin, and the animal bone powder is to be formed by animal skeleton through crushing, and the animal skeleton is selected from pig bone, ox
At least one of bone, sheep bone, chicken bone, duck bone and fish-bone.
3. metal oxide according to claim 1/biology carbon composite, which is characterized in that the metal oxide
For ferriferous oxide and Mn oxide.
4. metal oxide according to claim 3/biology carbon composite, which is characterized in that the ferriferous oxide is
By water-soluble iron salts through pyrogenous origin；The Mn oxide is by water-soluble manganese salt through pyrogenous origin.
5. metal oxide according to claim 4/biology carbon composite, which is characterized in that the water-soluble iron salts
For at least one of iron chloride, frerrous chloride, ferric nitrate, ferrous nitrate, ferric sulfate and ferrous sulfate；The water-soluble manganese salt
For at least one of potassium permanganate, manganese chloride, manganese sulfate and manganese nitrate.
6. a kind of preparation method of the metal oxide as described in Claims 1 to 5 is any/biology carbon composite, feature
It is, comprising:
S1, animal bone powder is provided, the animal bone powder is impregnated in the aqueous solution of metalline, it is former to obtain mixing after dry
Material；
S2, under the conditions of protective atmosphere, to the mixed raw material carry out pyrolysis processing, obtain metal oxide/charcoal it is compound
Material.
7. preparation method according to claim 6, which is characterized in that the metal salt is water-soluble iron salts and water-soluble manganese
Salt, the molar ratio of ferro element and manganese element is 1~5:1~5 in the metal salt；The quality of the animal bone powder and the molysite
It is 1~10:1~5 with the ratio between the gross mass of the manganese salt.
8. preparation method according to claim 6, which is characterized in that in the step S2, the protective atmosphere be nitrogen,
At least one of helium, neon and argon gas；The condition of the pyrolysis processing are as follows: with 5 DEG C/min~25 DEG C/min heating speed
Rate is warming up to 500 DEG C~700 DEG C.
9. according to any preparation method of claim 6~8, which is characterized in that the step S1 is specifically included: will be described
Animal bone powder is scattered in the aqueous solution of the metal salt, after ultrasonic 15min~180min, impregnate the animal bone powder 2h~
24h。
10. a kind of application of the metal oxide as described in Claims 1 to 5 is any/biology carbon composite, feature exist
In the metal oxide/biology carbon composite is added in heavy-metal contaminated soil, it is in situ that progress is added water after mixing
It repairs.
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| CN110835538A (en) * | 2019-11-20 | 2020-02-25 | 榆林学院 | High-efficiency recyclable soil remediation agent and preparation method and use method thereof |
| CN111925806A (en) * | 2020-07-20 | 2020-11-13 | 华东理工大学 | Sulfur-doped nano ferroferric oxide/biochar composite material as well as preparation method and application thereof |
| CN112457851A (en) * | 2020-11-13 | 2021-03-09 | 湖南有色金属研究院 | Heavy metal contaminated soil remediation material and preparation method and application thereof |
| CN112756392A (en) * | 2020-12-18 | 2021-05-07 | 广东工业大学 | Remediation agent and remediation method for organic contaminated soil |
| CN114177878A (en) * | 2021-11-19 | 2022-03-15 | 清华大学 | Material with adsorption-precipitation composite function and preparation method and application thereof |
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