CN107497399A - A kind of charcoal/bentonite composite material and its preparation method and application - Google Patents
A kind of charcoal/bentonite composite material and its preparation method and application Download PDFInfo
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- CN107497399A CN107497399A CN201710874767.0A CN201710874767A CN107497399A CN 107497399 A CN107497399 A CN 107497399A CN 201710874767 A CN201710874767 A CN 201710874767A CN 107497399 A CN107497399 A CN 107497399A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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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- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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- B09C1/00—Reclamation of contaminated soil
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Abstract
The invention discloses a kind of charcoal/bentonite composite material and its preparation method and application; it is related to environmental protection and repairs field; to simplify the preparation method of charcoal/bentonite composite material, and ensure that prepared charcoal/bentonite composite material has good heavy metal adsorption effect.The preparation method of the charcoal/bentonite composite material includes：Under the protection of inert gas, the bentonite mixed and potato skin are carried out by heating response using programmed temperature method so that the powdery in drying pre-composition discards the charing of potato skin, obtains charcoal/bentonite composite material.Charcoal/the bentonite composite material is made using above-mentioned preparation method.The preparation method of charcoal/bentonite composite material provided by the invention is used to prepare the application in terms of soil heavy mental adsorbent.
Description
Technical field
The present invention relates to environmental protection to repair field, and in particular to a kind of charcoal/bentonite composite material and its preparation
Methods and applications.
Background technology
The adverse effect of environment is constantly aggravated with the fast development and industrial technological advancement, industrial production of economy.Example
Such as：Industrial wastewater discharge can make it that Heavy Metals in Waters is exceeded, and industrial residue discharge can cause soil pollution, and waste gas row then can
Cause atmosphere pollution.Wherein, heavy metal has enriching, it is difficult to the characteristic degraded in the environment, to animals and plants and mankind's meeting
Caused murder by poisoning is bigger.Therefore, how to administer heavy metal pollution has turned into one of urgent problem to be solved in environmental protection.
Bentonite is a kind of layer aluminosilicate using montmorillonite as main component, and interlayer may expand, and cation exchange is held
Measure CEC（cation exchange capacity）Larger, heavy metal cation has stronger adsorption capacity.But due to swollen
Moistening native surface silica structure has stronger hydrophily, and interlayer cation is easily hydrated, thus adsorbed heavy metal is easy
Parsing, it is difficult to thoroughly removed from water body；In addition, adsorptive selectivity, the absorption stability of natural montmorillonite heavy metal ion
Deng also having much room for improvement.
Document CN200810238198.1 provides a kind of organic and electrodeless complex and preparation method thereof, and it is with Na-bentonite
Soil is inorganic matter, using pig manure and its degradation solution as Organic Ingredients, reacts 0.5~3 hour, is made organic at a temperature of 25~70 DEG C
With electrodeless complex, recovery technique is passivated for soil, this method needs to cultivate bacterium solution, complex for operation step.
The content of the invention
It is an object of the invention to provide a kind of charcoal/bentonite composite material and its preparation method and application, with letter
Change the preparation method of charcoal/bentonite composite material, and it is good to ensure that prepared charcoal/bentonite composite material has
Heavy metal adsorption effect.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of preparation method of charcoal/bentonite composite material, including：
Under the protection of inert gas, using programmed temperature method, the bentonite mixed and potato skin are subjected to heating response,
So that the powdery in drying pre-composition discards the charing of potato skin, charcoal/bentonite composite material is obtained.
Compared with prior art, in the preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention, only
Under the protection of inert gas, using programmed temperature method, heating response is carried out to the bentonite and potato skin mixed, at this
During individual, the organic substance such as carbohydrate in potato skin is first modified to bentonite so that bentonite bed spacing increases, and then controls
Heating-up temperature processed carbonizes potato skin, so as to which charcoal/bentonite composite material be made.This method is without nutrient solution and pressurized tank etc.
Special experiment material, only need to after bentonite and potato skin are well mixed, by programmed temperature method heating can just complete charcoal/
Bentonite composite material, therefore, the preparation method of charcoal/bentonite composite material provided by the invention are not only simple, are easy to
Operation, and the pore structure of prepared charcoal/bentonite composite material is flourishing, and there is larger interlamellar spacing, have
Good heavy metal adsorption.
In addition, the preparation method of charcoal/bentonite composite material provided by the invention, during temperature programming,
Bentonite is heated gradually to lose surface water and adsorbed water, and the impurity being mingled with hole possessed by bentonite also can be
Carbonized in heating process, to increase the hole in bentonite, so as to reduce the moisture film that moisture is formed in the presence of bentonite, and
Absorption resistance caused by the impurity being mingled with hole possessed by bentonite, improved its absorption property；Simultaneously
During powdery in pre-composition discards the charing of potato skin, bentonite is calcined, can also further increase swelling
Native specific surface area, contact area is adsorbed so as to increase it, improves absorption property.Therefore, in Temperature Programmed Processes, drying is pre-
Potato skin in mixed thing can not only carbonize, and bentonitic specific surface area there has also been certain increase so that potato skin can be more
Bentonite is modified well.
Present invention also offers a kind of charcoal/bentonite composite material, using the charcoal described in above-mentioned technical proposal/
The preparation method of bentonite composite material obtains, and the specific surface area of the charcoal/bentonite composite material is 59.13 m2/g-
65.26m2/ g, the adsorption capacity to heavy metal in soil are 105 mg/g -118mg/g.
Compared with prior art, the beneficial effect of charcoal/bentonite composite material provided by the invention and above-mentioned technology
The preparation method for charcoal/bentonite composite material that scheme provides is identical, will not be described here.
Present invention also offers charcoal/bentonite composite material described in a kind of above-mentioned technical proposal to prepare soil weight
Application in terms of metal absorbent.
Compared with prior art, charcoal/bentonite composite material provided by the invention is preparing heavy metal-polluted soil absorption
The preparation method phase for charcoal/bentonite composite material that the beneficial effect of application in terms of agent provides with above-mentioned technical proposal
Together, will not be described here.
Embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after present disclosure has been read, those skilled in the art
The present invention can be made various changes or modifications, these equivalent form of values equally fall into what the application appended claims were limited
Scope.
The invention provides a kind of preparation method of charcoal/bentonite composite material, including：In the protection of inert gas
Under, using programmed temperature method, the bentonite mixed and potato skin are subjected to heating response so that the powder in drying pre-composition
Shape discards the charing of potato skin, obtains charcoal/bentonite composite material.Can from the preparation process of charcoal/bentonite composite material
To find out：It can be just made, and need not be fermented using zymotechnique by single step reaction, it is only necessary to the swelling to mixing
Soil and the heating of potato picoprogram, therefore, the preparation method of charcoal/bentonite composite material provided by the invention is relatively simple
It is single, it is easily operated.
Moreover, in the preparation method of charcoal/bentonite composite material provided by the invention, using temperature programming to mixing
Bentonite and potato skin together is heated, and wherein potato skin is converted into charcoal, and the charcoal has largely stablize, height
The loose structure of aromatization, microcellular structure is flourishing, and specific surface area is big, and a variety of functional groups such as carbonyl, carboxyl, phenol are contained in surface
Hydroxyl, lactone group etc. so that charcoal can have a good adsorption capacity, auxiliary bentonite remove heavy metal in soil from
Son and organic pollution.
When using programmed temperature method, during the bentonite mixed and potato skin are carried out into heating response, potato skin
In the organic substance such as carbohydrate first bentonite is modified so that bentonite bed spacing increases so that by programmed temperature method
The bentonite bed spacing of reaction is bigger, after potato skin, which carbonizes formed Organic carbon, is adsorbed onto bentonitic interlayer, is formed
Charcoal/bentonite composite material there is larger particle diameter, so as to preferably play charcoal absorption heavy metal ion it is excellent
Gesture.Exemplary, the mass ratio of bentonite and potato skin is 2:（0.1~0.5）, wherein, potato skin is sweet potato skin, jacket, Chinese yam
One or more in skin, taro skin, other potato skins also may be selected, bentonite is powdery sodium bentonite, naturally it is also possible to is
Other bentonites.
In addition, the preparation method of charcoal/bentonite composite material provided by the invention, during temperature programming,
Bentonite is heated gradually to lose surface water and adsorbed water, and the impurity being mingled with hole possessed by bentonite also can be
Carbonized in heating process, to increase the hole in bentonite, so as to reduce the moisture film that moisture is formed in the presence of bentonite, and
Absorption resistance caused by the impurity being mingled with hole possessed by bentonite, improved its absorption property；Simultaneously
During powdery in pre-composition discards the charing of potato skin, bentonite is calcined, can also further increase swelling
Native specific surface area, contact area is adsorbed so as to increase it, improves absorption property.Therefore, in Temperature Programmed Processes, drying is pre-
Potato skin in mixed thing can not only carbonize, and bentonitic specific surface area there has also been certain increase so that potato skin can be more
Bentonite is modified well.
Test proves that：Compared with natural montmorillonite, the preparation of charcoal/bentonite composite material provided by the invention
The surface topography and interlamellar spacing of charcoal/bentonite composite material obtained by method are all changed：Specific surface area by
30.25m2/ g increases to 65.26m2/ g, interlamellar spacing increase to 2.9nm by 1.8nm.
Specifically, before the mixture of bentonite and potato skin is carried out into heating response, above-mentioned charcoal/bentonite composite material
Preparation method also include：
Bentonite is crushed, then sieved, obtains Powdered bentonite, the granularity of Powdered bentonite is the mesh of 150 mesh~200；
Discarded potato skin is crushed and then sieved, obtains powdery potato skin, the granularity of powdery potato skin is the mesh of 150 mesh -200.
Powdered bentonite and powdery potato skin are evenly spread in water, then dry moisture, obtains drying pre-composition, drying
Temperature used in moisture is 60 DEG C -80 DEG C.
Before carrying out ramped heating schedule due to the above-mentioned bentonite to mixing and potato skin, also to bentonite and potato skin
Carrying out powdered processing so that bentonite can adsorb substantial amounts of potato skin powder, and during moisture is dried so that potato
Skin is cured in bentonitic interlayer.Now, the bentonite and potato skin that mix are heated using programmed temperature method
During reaction, the interlayer that potato skin in bentonite is capable of further modified alta-mud is cured to, it is bentonitic further to improve
Interlamellar spacing；And when potato skin carbonizes, the charcoal obtained by enabling to after carbonizing sufficiently mixes with bentonite.
It is understood that the present invention is by the way that Powdered bentonite and powdery potato skin are evenly spread in water so that with water
For dispersion solvent, sufficiently Powdered bentonite and powdery potato skin are well mixed, and Powdered bentonite is dried by heating
With the dispersion liquid of powdery potato skin, it is ensured that Powdered bentonite and powdery potato skin under cryogenic, Powdered bentonite and powdery potato
Skin is sufficiently mixed, without reacting.
In addition, potato skin used in the present invention is discarded potato skin so that discarded potato skin is utilized, and recycles energy
Source, it is environmentally friendly.
Specifically, the preparation method of above-mentioned charcoal/bentonite composite material specifically includes：In the protection of inert gas
Under, the bentonite mixed and potato skin are heated to 100 DEG C -150 DEG C, insulation reaction 0.5h-1.5h, are then heated to
200 DEG C -300 DEG C, insulation reaction 0.5h-1h, finally heated to 400 DEG C -600 DEG C of insulation reaction 1h-1.5h, obtain charcoal/
Bentonite composite material.
And in order to ensure potato skin in Temperature Programmed Processes, the organic substance such as carbohydrate in potato skin is imitated to alta-mud modification
Fruit, and the charred effect of potato skin, drying pre-composition being heated to 100 DEG C -150 DEG C, used heating rate is 0.5 DEG C/
min；200 DEG C -300 DEG C are heated to, used heating rate is 0.5 DEG C/min, is heated to 400 DEG C -600 DEG C, used
Heating rate is 1 DEG C/min.
Preparation method with reference to specific embodiment to charcoal/bentonite composite material provided by the invention, it is following
Embodiment is only used for explaining, and does not lie in restriction.
Embodiment one
The preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention comprises the following steps：
The first step, bentonite is crushed, then cross 150 mesh sieves, obtain Powdered bentonite；Discarded sweet potato skin is subjected to impurity elimination
150 mesh sieves are crushed and then crossed, washing, obtain powdery potato skin；
Second step, according to 2:0.1 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.5h is mixed, then moisture is dried at 65 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, under the protection of nitrogen, using programmed temperature method, pre-composition will be dried according to 0.5 DEG C/min heating rate
100 DEG C, insulation reaction 0.5h are heated to, is then heated to 250 DEG C, insulation reaction 0.5h according to 0.5 DEG C/min heating rate,
450 DEG C of insulation reaction 1h are heated to 1 DEG C/min heating rate again, last furnace cooling, it is compound to obtain charcoal/bentonite
Material.
Embodiment two
The preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention comprises the following steps：
The first step, bentonite is crushed, then cross 200 mesh sieves, obtain Powdered bentonite；Abandoned white potato potato skin is carried out
Impurity elimination crushes and then crossed 200 mesh sieves, washing, obtains powdery potato skin；
Second step, according to 2:0.5 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
1h is mixed, then moisture is dried at 70 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, under the protection of nitrogen, using programmed temperature method, pre-composition will be dried according to 0.5 DEG C/min heating rate
120 DEG C, insulation reaction 0.5h are heated to, is then heated to 300 DEG C, insulation reaction 0.5h according to 0.5 DEG C/min heating rate,
500 DEG C of insulation reaction 1h are heated to 1 DEG C/min heating rate again, last furnace cooling, it is compound to obtain charcoal/bentonite
Material.
Embodiment three
The preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention comprises the following steps：
The first step, bentonite is crushed, then cross 180 mesh sieves, obtain Powdered bentonite；Discarded taro skin is subjected to impurity elimination
180 mesh sieves are crushed and then crossed, washing, obtain powdery potato skin；
Second step, according to 2:0.3 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.8h is mixed, then moisture is dried at 80 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, under the protection of argon gas, using programmed temperature method, pre-composition will be dried according to 0.5 DEG C/min heating rate
150 DEG C, insulation reaction 0.5h are heated to, is then heated to 280 DEG C, insulation reaction 0.5h according to 0.5 DEG C/min heating rate,
600 DEG C of insulation reaction 1h are heated to 1 DEG C/min heating rate again, last furnace cooling, it is compound to obtain charcoal/bentonite
Material.
Example IV
The preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention comprises the following steps：
The first step, bentonite is crushed, then cross 150 mesh sieves, obtain Powdered bentonite；By discarded yam skin and discarded horse
Bell potato skin is according to 1:1 quality crushes and then crossed 150 mesh sieves than impurity elimination, washing, obtains powdery potato skin；
Second step, according to 2:0.4 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.7h is mixed, then moisture is dried at 60 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, under the protection of argon gas, using programmed temperature method, pre-composition will be dried according to 0.5 DEG C/min heating rate
100 DEG C, insulation reaction 1.5h are heated to, is then heated to 300 DEG C, insulation reaction 1h according to 0.5 DEG C/min heating rate, then
400 DEG C of insulation reaction 1.5h are heated to 1 DEG C/min heating rate, last furnace cooling, it is compound to obtain charcoal/bentonite
Material.
Embodiment five
The preparation method of charcoal/bentonite composite material provided in an embodiment of the present invention comprises the following steps：
The first step, bentonite is crushed, then cross 200 mesh sieves, obtain Powdered bentonite；Abandoned white potato skin is gone into miscellaneous powder
Broken and then 200 mesh sieves excessively, washing, obtain powdery potato skin；
Second step, according to 2:0.3 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.5h is mixed, then moisture is dried at 75 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, under the protection of argon gas, using programmed temperature method, pre-composition will be dried according to 0.5 DEG C/min heating rate
160 DEG C, insulation reaction 1h are heated to, is then heated to 250 DEG C, insulation reaction 0.8h according to 0.5 DEG C/min heating rate, then
450 DEG C of insulation reaction 0.5h are heated to 1 DEG C/min heating rate, last furnace cooling, it is compound to obtain charcoal/bentonite
Material.
Comparative example one
The preparation method for charcoal/bentonite composite material that this comparative example provides comprises the following steps：
The first step, bentonite is crushed, then cross 200 mesh sieves, obtain Powdered bentonite；Discarded sweet potato skin is subjected to impurity elimination
200 mesh sieves are crushed and then crossed, washing, obtain powdery potato skin；
Second step, according to 2:0.1 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.5h is mixed, then moisture is dried at 65 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, drying pre-composition is heated 2 hours at a temperature of 150 DEG C, obtains charcoal/bentonite composite wood
Material.
Comparative example two
The first step, bentonite is crushed, then cross 200 mesh sieves, obtain Powdered bentonite；Discarded sweet potato skin is subjected to impurity elimination
200 mesh sieves are crushed and then crossed, washing, obtain powdery potato skin；
Second step, according to 2:0.1 mass ratio, Powdered bentonite is distributed in water, is then added powdery potato skin thereto, is stirred
0.5h is mixed, then moisture is dried at 65 DEG C, obtains drying pre-composition；It is dispersed in per 2g Powdered bentonites in 20L water；
3rd step, drying pre-composition is heated 2 hours at a temperature of 600 DEG C, obtains charcoal/bentonite composite wood
Material.
The embodiment of table 1 and comparative example heavy metal absorption property comparative result
The result obtained by embodiment and comparative example, it is multiple using charcoal/bentonite obtained by the embodiment of the present invention
Condensation material specific surface area is big, also bigger to the adsorption capacity of heavy metal in soil processing.And charcoal/bentonite composite material
The pollutant adsorption experiment such as heavy metal in soil ion Cu, Cr (VI), Pb is shown, the charcoal prepared at optimum conditions/
Bentonite composite material reaches more than 90% to the removal effect of heavy metal in soil.Therefore, life provided in an embodiment of the present invention
Thing charcoal/bentonite composite material can be in terms of soil heavy mental adsorbent be prepared application.
Claims (10)
- A kind of 1. preparation method of charcoal/bentonite composite material, it is characterised in that including：Under the protection of inert gas, using programmed temperature method, the bentonite mixed and potato skin are subjected to heating response, So that the powdery in drying pre-composition discards the charing of potato skin, charcoal/bentonite composite material is obtained.
- 2. the preparation method of charcoal/bentonite composite material according to claim 1, it is characterised in that by bentonite Before carrying out heating response with the mixture of potato skin, the preparation method of the charcoal/bentonite composite material also includes：Bentonite is crushed, then sieved, obtains Powdered bentonite；Discarded potato skin is crushed and then sieved, is obtained Powdery potato skin；Powdered bentonite and powdery potato skin are evenly spread in water, then dry moisture, obtains drying pre-composition.
- 3. the preparation method of charcoal/bentonite composite material according to claim 2, it is characterised in that the powdery Bentonitic granularity is the mesh of 150 mesh~200, and the granularity of the powdery potato skin is the mesh of 150 mesh -200.
- 4. the preparation method of charcoal/bentonite composite material according to claim 2, it is characterised in that the drying Temperature used in moisture is 60 DEG C -80 DEG C.
- 5. the preparation method of charcoal/bentonite composite material according to claim 1, it is characterised in that the swelling Soil is powdery sodium bentonite, and the potato skin includes the one or more in sweet potato skin, jacket, yam skin, taro skin.
- 6. the preparation method of charcoal/bentonite composite material according to claim 1, it is characterised in that the swelling The mass ratio of soil and potato skin is 2:（0.1~0.5）.
- 7. the preparation method of charcoal/bentonite composite material according to any one of claim 1 ~ 5, it is characterised in that The preparation method of the charcoal/bentonite composite material specifically includes：Under the protection of inert gas, the bentonite mixed and potato skin are heated to 100 DEG C -150 DEG C, insulation reaction 0.5h-1.5h, 200 DEG C -300 DEG C, insulation reaction 0.5h-1h are then heated to, finally heated to 400 DEG C -600 DEG C of insulation reactions 1h-1.5h, obtain charcoal/bentonite composite material.
- 8. the preparation method of charcoal/bentonite composite material according to claim 7, it is characterised in that drying is pre- Mixed thing is heated to 100 DEG C -150 DEG C, and used heating rate is 0.5 DEG C/min；It is heated to 200 DEG C -300 DEG C, it is used Heating rate is 0.5 DEG C/min；400 DEG C -600 DEG C are heated to, used heating rate is 1 DEG C/min.
- A kind of 9. charcoal/bentonite composite material, it is characterised in that：Using the charcoal described in claim any one of 1-8/ The preparation method of bentonite composite material obtains, and the specific surface area of the charcoal/bentonite composite material is 59.13 m2/g- 65.26m2/ g, the adsorption capacity to heavy metal in soil are 105 mg/g -118mg/g.
- 10. application of the charcoal/bentonite composite material in terms of soil heavy mental adsorbent is prepared described in claim 9.
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Cited By (10)
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| CN108607508A (en) * | 2018-04-17 | 2018-10-02 | 句容康泰膨润土有限公司 | A kind of high absorption capacity sodium base bentonite preparation method |
| CN108889273A (en) * | 2018-06-04 | 2018-11-27 | 安徽师范大学 | A kind of preparation method and applications of composite adsorbing material |
| CN110373205A (en) * | 2019-06-20 | 2019-10-25 | 安徽壹陆红现代农业科技有限公司 | A kind of preparation method of high concentration cobalt, lead contamination soil soil-repairing agent |
| CN110496596A (en) * | 2018-05-18 | 2019-11-26 | 南京理工大学 | Charcoal-montmorillonite composite material and its preparation method and application |
| CN110746976A (en) * | 2019-10-16 | 2020-02-04 | 北京乾景园林股份有限公司 | Soil remediation agent for passivating soil heavy metals and preparation method thereof |
| CN110776148A (en) * | 2019-11-21 | 2020-02-11 | 柏威达(南京)环境科技有限公司 | Industrial wastewater treatment method containing metal ions |
| CN111040768A (en) * | 2020-01-02 | 2020-04-21 | 江苏省农业科学院 | Preparation of bentonite modified hydrothermal carbon material and application of bentonite modified hydrothermal carbon material in non-point source pollution emission reduction |
| CN111729644A (en) * | 2020-07-31 | 2020-10-02 | 河海大学 | Biochar-bentonite porous composite ball and preparation method thereof |
| CN114210304A (en) * | 2021-11-11 | 2022-03-22 | 山东山科生态环境研究院有限公司 | Biological carbon/bentonite composite material loaded with humic acid and preparation method and application thereof |
| CN114700033A (en) * | 2020-12-07 | 2022-07-05 | 中国环境科学研究院 | Nitrogen and phosphorus control and aquatic plant habitat restoration material and preparation method and application thereof |
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| CN108607508A (en) * | 2018-04-17 | 2018-10-02 | 句容康泰膨润土有限公司 | A kind of high absorption capacity sodium base bentonite preparation method |
| CN110496596A (en) * | 2018-05-18 | 2019-11-26 | 南京理工大学 | Charcoal-montmorillonite composite material and its preparation method and application |
| CN108889273A (en) * | 2018-06-04 | 2018-11-27 | 安徽师范大学 | A kind of preparation method and applications of composite adsorbing material |
| CN110373205A (en) * | 2019-06-20 | 2019-10-25 | 安徽壹陆红现代农业科技有限公司 | A kind of preparation method of high concentration cobalt, lead contamination soil soil-repairing agent |
| CN110746976A (en) * | 2019-10-16 | 2020-02-04 | 北京乾景园林股份有限公司 | Soil remediation agent for passivating soil heavy metals and preparation method thereof |
| CN110776148A (en) * | 2019-11-21 | 2020-02-11 | 柏威达(南京)环境科技有限公司 | Industrial wastewater treatment method containing metal ions |
| CN111040768A (en) * | 2020-01-02 | 2020-04-21 | 江苏省农业科学院 | Preparation of bentonite modified hydrothermal carbon material and application of bentonite modified hydrothermal carbon material in non-point source pollution emission reduction |
| CN111040768B (en) * | 2020-01-02 | 2021-07-16 | 江苏省农业科学院 | Preparation of bentonite modified hydrothermal carbon material and application of bentonite modified hydrothermal carbon material in non-point source pollution emission reduction |
| CN111729644A (en) * | 2020-07-31 | 2020-10-02 | 河海大学 | Biochar-bentonite porous composite ball and preparation method thereof |
| CN114700033A (en) * | 2020-12-07 | 2022-07-05 | 中国环境科学研究院 | Nitrogen and phosphorus control and aquatic plant habitat restoration material and preparation method and application thereof |
| CN114210304A (en) * | 2021-11-11 | 2022-03-22 | 山东山科生态环境研究院有限公司 | Biological carbon/bentonite composite material loaded with humic acid and preparation method and application thereof |
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