CN108624326A - The preparation method and method of modifying of a kind of soil passivator and application - Google Patents
The preparation method and method of modifying of a kind of soil passivator and application Download PDFInfo
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- CN108624326A CN108624326A CN201810564283.0A CN201810564283A CN108624326A CN 108624326 A CN108624326 A CN 108624326A CN 201810564283 A CN201810564283 A CN 201810564283A CN 108624326 A CN108624326 A CN 108624326A
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- 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
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
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- B09C1/08—Reclamation of contaminated soil chemically
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Abstract
The invention discloses a kind of preparation method of soil passivator and method of modifying and applications, using gangue as raw material, synthesize NaY type zeolite molecular sieves, and inquired into the influence that each factor synthesizes NaY type zeolite molecular sieves.The zeolite molecular sieve of gained is modified with iron sulfide, synthetic zeolite and modified zeolite are respectively acting on heavy-metal contaminated soil passivation to repair, heavy metal is passivated in the soil, reduce its migration and bioactivity, secondary pollution is not caused during soil remediation, there is wider practicability in soil remediation engineering.
Description
Technical field
The invention belongs to heavy metal pollution of soil Treatment process fields, and in particular to a kind of preparation method of soil passivator
And method of modifying and application.
Background technology
In recent years, with the fast development of Urbanization in China and the adjustment of industrial pattern, the hair energetically of industrial or agricultural
Exhibition and the exploitation in mine, heavy metal pollution of soil are increasingly severe.Heavy metal is as persistent toxic pollutant, Ke Yitong
Cross different approaches and enter soil, be stored in for a long time in soil because that cannot be biodegradable, cause soil pollution, to public health and
Surrounding enviroment generate harm.
Soil remediation to heavy metal pollution includes mainly peripheral doses, biological prosthetic and chemical remediation, Physical processing
It is costly, it is big for high concentration heavy metal pollution sitework amount；Biological restoration repairing efficiency is long, and to polluter reparation
With certain selectivity.Chemical restoration due to being passivated with regulation effect, thoroughly, suitable for the improvement etc. of serious pollution soil
Advantage and obtain extensive concern and application.
Currently, the chemical restoration for heavy metal pollution mainly uses chemical leaching technology and passivation recovery technique.So
And for elution technique, since eluant, eluent has certain selectivity to heavy metal, soil fertility is destroyed, influences soil
Matter, and eluent needs are further processed.Passivating technique can effectively reduce the migration performance of soil pollutant, easy to operate easy
Row.The material for being used as heavy metal deactivator has ammonium salt, turf, ground phosphate rock, quick lime etc., these material costs are higher, answer
It is poor with eurytopicity, it can seriously change soil physico-chemical property after application.
Invention content
The present invention provides preparation method and method of modifying and the application of a kind of soil passivator, to overcome the prior art to exist
The problem of, the present invention uses the compounds containing thiol groups in food additives as heavy metal absorbent, thus solves soil passivation
The technical issues of agent adsorbance is few, passivation ability is weak and causes secondary pollution in use.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of preparation method of soil passivator, includes the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation, thermal activated coal gangue and powdered sodium carbonate are then passed through into grinding
It is sufficiently mixed, mixture is roasted to obtain alkali fusion product；
Step 2：Alkali fusion product is added in sodium hydroxide solution, it is agitated, filtrate is obtained by filtration；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate are added into filtrate, while sodium metasilicate is added and adjusts silicon
Then aluminium ratio is aged to obtain presoma to 3~8；
Step 4：Presoma is subjected to Crystallizing treatment, then cools down, be filtered, washed, drying to get to soil passivator
NaY type zeolites.
Further, the temperature of thermal activation is 650 DEG C~1000 DEG C in step 1, and the time is 1h~3h；Thermal activation bastard coal
The mass ratio of stone and powdered sodium carbonate is (0.5~1.5)：1；Calcination temperature is 700 DEG C~1000 DEG C, and the time is 1h~3h.
Further, alkali fusion product is added at a temperature of 70 DEG C~100 DEG C in sodium hydroxide solution in step 2,
Make liquid-solid ratio for 30mL/g~50mL/g, and a concentration of 1mol/L~5mol/L of sodium hydroxide solution；Mixing time 0.5h~
1.5h。
Further, the addition of y-type zeolite crystal seed is that 2g~10g, ethylenediamine tetrem is added per mL filtrates in step 3
The addition of acid disodium is that 2g~10g is added per mL filtrates；Aging Temperature is 60 DEG C~90 DEG C, and digestion time is 12h~16h.
Further, the temperature of Crystallizing treatment is 60 DEG C~150 DEG C in step 4, and the time is 6h~10h.
The method of modifying of soil passivator, includes the following steps made from a kind of above-mentioned preparation method：
Step a：Ferrous sulfate is dissolved in ultra-pure water and obtains ferrous sulfate solution, is added into ferrous sulfate solution
Then NaY type zeolites, stirring are filtered, washed, to being uniformly mixed by filter residue and drying；
Step b：Filter residue roasts after will be dry, then cools to room temperature, and modified soil passivator is obtained after ground, sieving
Fe-NaY zeolites.
Further, in step a ferrous sulfate solution a concentration of 0.2mol/L~3mol/L, into ferrous sulfate solution
After NaY type zeolites are added, it is 2mL/g~4mL/g to make liquid-solid ratio, and mixing time is 2h~18h；Drying temperature is 40 DEG C~120
DEG C, drying time be 4~for 24 hours.
Further, calcination temperature is 200 DEG C~800 DEG C in step b, and roasting time is 2h~for 24 hours.
A kind of application of soil passivator prepared by the above method on removal Heavy Metals in Contaminated Soils, when in use,
Contaminated soil, water and soil passivator are uniformly mixed and obtain mixture so that solid content in mixture is 10%~
90%, and the mass fraction of soil passivator is 0.1%~10% in solid, is then conserved 3 months, to remove in contaminated soil
Heavy metal.
Further, the heavy metal includes copper, nickel, lead, cadmium and chromium.
Compared with prior art, the present invention has technique effect beneficial below：
It is raw material that the present invention, which selects gangue, prepares the high purity N aY type zeolites of high silica alumina ratio, is the chemistry of heavy metal
While passivation recovery technique provides a kind of passivator of new cost effective, asking for gangue solid waste bulk deposition is solved
Topic, reaches the environmental improvement dreamboat of " treatment of wastes with processes of wastes against one another ", contains part of hydroxyl in NaY type zeolites prepared by the present invention, can be with
It interacts with the heavy metal in soil, forms coordinate bond, and NaY type zeolites are porous material, NaY zeolite is to heavy metal
Absorption can also be exchanged by cation and two kinds of major ways of electrostatic interaction, to achieve the purpose that heavy metal in stable soil.
The present invention is modified the Fe-NaY types zeolite prepared and increases relative to NaY type zeolite pores, aperture increases, distribution of pores
Uniformly, plane of crystal forms porous shape lamellar structure.
The NaY types zeolite for preparing of the present invention and Fe-NaY types zeolite are carried out using test, as a result show NaY types zeolite with
Fe-NaY types zeolite has Pb, Cd, Cu and Ni in soil certain passivation effect, identical in additive amount
(10%), Fe-NaY types zeolite is better than NaY type zeolites to the passivation effect of heavy metal, is especially imitated to the passivation of Ni, Cu and Cd
Fruit, two kinds of passivator are mainly to change the existing forms of each heavy metal in soil to the passivation of heavy metal in soil, drop
The transfer ability of each heavy metal in low soil.
Description of the drawings
Fig. 1 is the front and back heavy metal Cr morphological analysis of passivation；
Fig. 2 is the front and back heavy metal Cu morphological analysis of passivation；
Fig. 3 is the front and back heavy metal Ni morphological analysis of passivation；
Fig. 4 is the front and back heavy metal Pb morphological analysis of passivation；
Fig. 5 is the front and back heavy metal Cd morphological analysis of passivation；
Flow chart when Fig. 6 is application.
Specific implementation mode
The present invention is described in further detail below：
A kind of preparation method of soil passivator, includes the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation 1h~3h at a temperature of 650 DEG C~1000 DEG C, it is then that heat is living
Change gangue with powdered sodium carbonate according to (0.5~1.5)：1 mass ratio is sufficiently mixed by grinding, by mixture at 700 DEG C
1h~3h is roasted at a temperature of~1000 DEG C obtains alkali fusion product；
Step 2：Alkali fusion product is added at a temperature of 70 DEG C~100 DEG C in sodium hydroxide solution, makes the liquid-solid ratio be
30mL/g~50mL/g, and a concentration of 1mol/L~5mol/L of sodium hydroxide solution, magnetic agitation 0.5h~1.5h are filtered
To filtrate；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate, y-type zeolite crystal seed and ethylenediamine are added into filtrate
The addition of tetraacethyl disodium is that 2g~10g is added in every mL filtrates, while sodium metasilicate is added and adjusts silica alumina ratio to 3~8, then
It is aged 12h~16h at a temperature of 60 DEG C~90 DEG C and obtains presoma；
Step 4：Presoma is subjected to Crystallizing treatment, the temperature of Crystallizing treatment is 60 DEG C~150 DEG C, the time be 6h~
Then 10h is quickly cooled down, is filtered, washed, drying to get to soil passivator NaY type zeolites.
A kind of method of modifying of above-mentioned soil passivator, includes the following steps：
Step a：Ferrous sulfate is dissolved in obtained in ultra-pure water a concentration of 0.2mol/L~3mol/L ferrous sulfate it is molten
NaY type zeolites are added into ferrous sulfate solution for liquid, and it is 2mL/g~4mL/g to make liquid-solid ratio, and stirring 2h~18h is equal to mixing
It is even, it is then filtered, washed, by filter residue and drying, drying temperature is 40 DEG C~120 DEG C, and drying time is 4h~for 24 hours；
Step b：Will it is dry after filter residue roast 2h~for 24 hours at a temperature of 200 DEG C~800 DEG C, then cool to room temperature, warp
Grinding obtains modified soil passivator Fe-NaY zeolites after crossing 300 mesh sieve.
A kind of application of soil passivator on removal Heavy Metals in Contaminated Soils, in use, by contaminated soil, water and
Soil passivator is uniformly mixed and obtains mixture so that the solid content in mixture is 10%~90%, and soil in solid
The mass fraction of passivator is 0.1%~10%, is then conserved 3 months, to remove the heavy metal in contaminated soil, the huge sum of money
Category includes copper, nickel, lead, cadmium and chromium.
The present invention is described in further detail with reference to embodiment：
Embodiment 1
A kind of preparation method of soil passivator, includes the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation 3h at a temperature of 650 DEG C, then by thermal activated coal gangue and carbon
Sour sodium powder end is according to 0.5：1 mass ratio is sufficiently mixed by grinding, and mixture is roasted 1h at a temperature of 700 DEG C obtains alkali
Molten product；
Step 2：Alkali fusion product is added at a temperature of 70 DEG C in sodium hydroxide solution, it is 50mL/g to make liquid-solid ratio,
And filtrate is obtained by filtration in a concentration of 5mol/L of sodium hydroxide solution, magnetic agitation 1.5h；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate, y-type zeolite crystal seed and ethylenediamine are added into filtrate
The addition of tetraacethyl disodium is respectively to add 2g per mL filtrates, while sodium metasilicate is added and adjusts silica alumina ratio to 8, then at 60 DEG C
At a temperature of ageing 12h obtain presoma；
Step 4：Presoma is subjected to Crystallizing treatment, the temperature of Crystallizing treatment is 60 DEG C, time 6h, then fast quickly cooling
But it, is filtered, washed, dries to get to soil passivator NaY type zeolites.
A kind of method of modifying of above-mentioned soil passivator, includes the following steps：
Step a：Ferrous sulfate is dissolved in the ferrous sulfate solution that a concentration of 0.2mol/L is obtained in ultra-pure water, to sulfuric acid
NaY type zeolites are added in ferrous iron solution, it is 2mL/g to make liquid-solid ratio, then stirring 2h is filtered, washed, to being uniformly mixed by filter residue
Dry, drying temperature is 40 DEG C, and drying time is for 24 hours；
Step b：Filter residue after drying is roasted for 24 hours at a temperature of 200 DEG C, is then cooled to room temperature, ground, mistake 300
Modified soil passivator Fe-NaY zeolites are obtained after mesh sieve.
Embodiment 2
A kind of preparation method of soil passivator, includes the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation 1h at a temperature of 1000 DEG C, then by thermal activated coal gangue with
Powdered sodium carbonate is according to 1.5：1 mass ratio is sufficiently mixed by grinding, and mixture is roasted 3h at a temperature of 1000 DEG C to be obtained
To alkali fusion product；
Step 2：Alkali fusion product is added at a temperature of 100 DEG C in sodium hydroxide solution, it is 30mL/ to make liquid-solid ratio
G, and filtrate is obtained by filtration in a concentration of 1mol/L of sodium hydroxide solution, magnetic agitation 0.5h；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate, y-type zeolite crystal seed and ethylenediamine are added into filtrate
The addition of tetraacethyl disodium is respectively to add 5g per mL filtrates, while sodium metasilicate is added and adjusts silica alumina ratio to 3, then at 90 DEG C
At a temperature of ageing 14h obtain presoma；
Step 4：Presoma is subjected to Crystallizing treatment, the temperature of Crystallizing treatment is 150 DEG C, time 8h, then fast quickly cooling
But it, is filtered, washed, dries to get to soil passivator NaY type zeolites.
A kind of method of modifying of above-mentioned soil passivator, includes the following steps：
Step a：Ferrous sulfate is dissolved in the ferrous sulfate solution that a concentration of 3mol/L is obtained in ultra-pure water, to sulfuric acid Asia
NaY type zeolites are added in ferrous solution, it is 4mL/g to make liquid-solid ratio, then stirring 18h is filtered, washed, to being uniformly mixed by filter residue
Dry, drying temperature is 120 DEG C, drying time 4h；
Step b：Filter residue after drying is roasted into 2h at a temperature of 800 DEG C, is then cooled to room temperature, ground, 300 mesh excessively
Modified soil passivator Fe-NaY zeolites are obtained after sieve.
Embodiment 3
A kind of preparation method of soil passivator, includes the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation 2h at a temperature of 800 DEG C, then by thermal activated coal gangue and carbon
Sour sodium powder end is according to 1：1 mass ratio is sufficiently mixed by grinding, and mixture is roasted 2h at a temperature of 800 DEG C obtains alkali fusion
Melt product；
Step 2：Alkali fusion product is added at a temperature of 80 DEG C in sodium hydroxide solution, it is 40mL/g to make liquid-solid ratio,
And filtrate is obtained by filtration in a concentration of 3mol/L of sodium hydroxide solution, magnetic agitation 1h；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate, y-type zeolite crystal seed and ethylenediamine are added into filtrate
The addition of tetraacethyl disodium is respectively to add 10g per mL filtrates, while sodium metasilicate is added and adjusts silica alumina ratio to 6, then at 75 DEG C
At a temperature of be aged 16h obtain presoma；
Step 4：Presoma is subjected to Crystallizing treatment, the temperature of Crystallizing treatment is 100 DEG C, time 10h, then quickly
It cools down, be filtered, washed, drying to get to soil passivator NaY type zeolites.
A kind of method of modifying of above-mentioned soil passivator, includes the following steps：
Step a：Ferrous sulfate is dissolved in the ferrous sulfate solution that a concentration of 1mol/L is obtained in ultra-pure water, to sulfuric acid Asia
NaY type zeolites are added in ferrous solution, it is 3mL/g to make liquid-solid ratio, then stirring 10h is filtered, washed, to being uniformly mixed by filter residue
Dry, drying temperature is 105 DEG C, drying time 18h；
Step b：Filter residue after drying is roasted into 16h at a temperature of 500 DEG C, is then cooled to room temperature, ground, mistake 300
Modified soil passivator Fe-NaY zeolites are obtained after mesh sieve.
NaY types zeolite and Fe-NaY zeolites prepared by embodiment 2 is passivated for soil, the following institute of specific embodiment
Show：
Embodiment a：
3.074gkg is accurately weighed with assay balance-1CrCl3·6H2Ultra-pure water is added in 1.5kg sample soil in O
Submergence, being placed in stirring 2h on magnetic stirring apparatus makes it be uniformly mixed, and air-dries at room temperature, after carrying out aging in eight months by a definite date,
20 mesh sieve is crossed, every part of 40g soil is weighed with assay balance and is placed in 250mL wide-mouth bottles, added respectively according to dry mass ratio
0.1%, Fe-NaY boiling of 0.25%, 0.4%, 1%, 2.5%, the 5% and 10% passivator NaY zeolite and dry mass than 10%
Ultrapure water immersion is added in stone, and being placed in stirring 0.5h on magnetic stirring apparatus makes it be uniformly mixed, and air-dries, periodically adds at room temperature
Ultra-pure water simultaneously controls soil moisture content 20% or so.Three groups of parallel laboratory tests are set, trimestral passivation by a definite date is carried out.Reaction
Heavy metal in soil Cd leaching concentrations are measured afterwards.The results are shown in Table 1.Morphological analysis, knot are carried out to the soil after passivation simultaneously
Fruit is as shown in Figure 1.
Table 1 simulates heavy metal chromium Cr leaching concentrations and passivation efficiency after soil passivation
Table 1 shows that NaY types zeolite can reduce the concentration of Cr in leachate, there is certain passivation to the Cr in contaminated soil
Effect.When NaY type zeolite additive amounts>When 2.5%, the deactivation rate to Cr in soil is more than 50%.When NaY type zeolite additive amounts are
When 10%, the deactivation rate of Cr is 57.47%, and when the Fe-NaY type zeolites of addition 10%, the deactivation rate of Cr is 78.47%.It says
Bright Fe-NaY types zeolite is better than NaY type zeolites to the passivation effect of Cr.NaY types zeolite and Fe-NaY zeolites in soil Cr it is blunt
Change effect mainly changes the occurrence patterns (Fig. 1) of Cr in soil, reduces the transfer ability of Cr in soil.
Embodiment b：
3.058mgkg is accurately weighed with assay balance-1CdCl2·2.5H2O, 1.510gkg-1Cu(NO3)2,
1.201g·kg-1Pb(NO3)2, 1.336gkg-1NiSO4·6H2O is added ultrapure water immersion, sets in 1.5kg sample soil
So that it is uniformly mixed in stirring 2h on magnetic stirring apparatus, air-dry at room temperature, after carrying out aging in eight months by a definite date, crosses 20 mesh
Sieve, weighs every part of 40g soil with assay balance and is placed in 250mL wide-mouth bottles, add respectively according to dry mass than 0.1%,
0.25%, Fe-NaY zeolite of 0.4%, 1%, 2.5%, the 5% and 10% stabilizer NaY zeolite and dry mass than 10%, adds
Enter ultra-pure water submergence, being placed in stirring 0.5h on magnetic stirring apparatus makes it be uniformly mixed, and air-dries at room temperature, periodically adds ultra-pure water
And soil moisture content is controlled 20% or so.Three groups of parallel laboratory tests are set, trimestral passivation by a definite date is carried out.It is measured after reaction
Heavy metal in soil Cd, Cu, Pb and Ni leaching concentration.The results are shown in Table 2.Form point is carried out to the soil after passivation simultaneously
Analysis, as a result as shown in Fig. 2~Fig. 5.
Table 2 simulates Leaching of Heavy Metals concentration and passivation efficiency after soil passivation
Table 2 shows that NaY types zeolite and Fe-NaY types zeolite have certain passivation to imitate Pb, Cd, Cu and Ni in soil
Fruit.NaY types zeolite is best to the passivation effect of Pb, is secondly Ni, worst to the passivation effect of Cd.As NaY type zeolites add
It measures to increase to the deactivation rate of 10%, Pb from 0.1% and be increased to from 31.32% the deactivation rate of 65.06%, Cu and be promoted from 17.24%
Deactivation rate to 36.21%, Ni is increased to 47.67% from 26.74%, and the deactivation rate of Cd then drops to from 22.72%
13.63%, this is then caused by competitive Adsorption.It is identical (10%) in additive amount, Fe-NaY type zeolite counterweights
The passivation effect of metal is better than NaY type zeolites, the especially passivation effect to Ni, Cu and Cd.
Two kinds of passivator are can be seen that from Fig. 2~Fig. 5, and soil mainly is changed to the passivation of heavy metal in soil
In each heavy metal existing forms, reduce the transfer ability of each heavy metal in soil.
Claims (10)
1. a kind of preparation method of soil passivator, which is characterized in that include the following steps：
Step 1：Coal shale in brick making is subjected to thermal activation, it is then that thermal activated coal gangue and powdered sodium carbonate is abundant by grinding
Mixing, mixture is roasted to obtain alkali fusion product；
Step 2：Alkali fusion product is added in sodium hydroxide solution, it is agitated, filtrate is obtained by filtration；
Step 3：Y-type zeolite crystal seed and disodium ethylene diamine tetraacetate are added into filtrate, while sodium metasilicate is added and adjusts silica alumina ratio
To 3~8, then it is aged to obtain presoma；
Step 4：Presoma is subjected to Crystallizing treatment, then cools down, be filtered, washed, drying to get to soil passivator NaY types
Zeolite.
2. a kind of preparation method of soil passivator according to claim 1, which is characterized in that thermal activation in step 1
Temperature is 650 DEG C~1000 DEG C, and the time is 1h~3h；The mass ratio of thermal activated coal gangue and powdered sodium carbonate be (0.5~
1.5)：1；Calcination temperature is 700 DEG C~1000 DEG C, and the time is 1h~3h.
3. a kind of preparation method of soil passivator according to claim 1, which is characterized in that by alkali fusion in step 2
Product is added at a temperature of 70 DEG C~100 DEG C in sodium hydroxide solution, makes liquid-solid ratio for 30mL/g~50mL/g, and hydroxide
A concentration of 1mol/L~5mol/L of sodium solution；Mixing time 0.5h~1.5h.
4. a kind of preparation method of soil passivator according to claim 1, which is characterized in that y-type zeolite in step 3
The addition of crystal seed is that 2g~10g is added per mL filtrates, the addition of disodium ethylene diamine tetraacetate be added per mL filtrates 2g~
10g；Aging Temperature is 60 DEG C~90 DEG C, and digestion time is 12h~16h.
5. a kind of preparation method of soil passivator according to claim 1, which is characterized in that Crystallizing treatment in step 4
Temperature be 60 DEG C~150 DEG C, the time be 6h~10h.
6. a kind of method of modifying using soil passivator made from preparation method described in claim 1, which is characterized in that packet
Include following steps：
Step a：Ferrous sulfate is dissolved in ultra-pure water and obtains ferrous sulfate solution, NaY types are added into ferrous sulfate solution
Then zeolite, stirring are filtered, washed, to being uniformly mixed by filter residue and drying；
Step b：Filter residue roasts after will be dry, then cools to room temperature, and modified soil passivator Fe- is obtained after ground, sieving
NaY zeolite.
7. the method for modifying of soil passivator according to claim 6, which is characterized in that ferrous sulfate solution in step a
A concentration of 0.2mol/L~3mol/L, into ferrous sulfate solution be added NaY type zeolites after, make liquid-solid ratio be 2mL/g~
4mL/g, mixing time are 2h~18h；Drying temperature be 40 DEG C~120 DEG C, drying time be 4~for 24 hours.
8. the method for modifying of soil passivator according to claim 6, which is characterized in that calcination temperature is 200 in step b
DEG C~800 DEG C, roasting time is 2h~for 24 hours.
9. soil passivator prepared by a kind of any one of claim 1-8 the methods is on removal Heavy Metals in Contaminated Soils
Using, which is characterized in that when in use, contaminated soil, water and soil passivator are uniformly mixed and obtain mixture so that is mixed
It is 10%~90% to close the solid content in object, and the mass fraction of soil passivator is 0.1%~10% in solid, is then supported
Shield 3 months, to remove the heavy metal in contaminated soil.
10. application according to claim 9, which is characterized in that the heavy metal includes copper, nickel, lead, cadmium and chromium.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351764A (en) * | 2018-10-25 | 2019-02-19 | 上海十方生态园林股份有限公司 | The passivator of cadmium in one kind of multiple heavy-metal contaminated soils |
| CN114350368A (en) * | 2022-01-17 | 2022-04-15 | 生态环境部南京环境科学研究所 | Method for repairing arsenic-polluted soil by using zeolite-based mineral repair material |
| CN114751425A (en) * | 2022-04-02 | 2022-07-15 | 四川大学 | Preparation method and application of zeolite soil passivator with high iron content |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1709794A (en) * | 2004-06-16 | 2005-12-21 | 中国石油化工股份有限公司 | Method for synthesizing Y-zeolite composite material |
| CN1803613A (en) * | 2005-12-30 | 2006-07-19 | 中国石油大学(北京) | ZSM-5 type molecular sieve and method for preparing the same |
| CN101618882A (en) * | 2008-07-04 | 2010-01-06 | 中国石油化工股份有限公司 | Method for in-situ synthesis of Y-type molecular sieve |
| CN104340990A (en) * | 2013-07-31 | 2015-02-11 | 中国石油化工股份有限公司 | Method for synthesizing zeolite Y |
| CN105217648A (en) * | 2015-08-19 | 2016-01-06 | 安徽建筑大学 | Method for preparing mesoporous microporous NaY/MCM-41 composite molecular sieve by using coal gangue and silica fume as raw materials |
-
2018
- 2018-06-04 CN CN201810564283.0A patent/CN108624326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1709794A (en) * | 2004-06-16 | 2005-12-21 | 中国石油化工股份有限公司 | Method for synthesizing Y-zeolite composite material |
| CN1803613A (en) * | 2005-12-30 | 2006-07-19 | 中国石油大学(北京) | ZSM-5 type molecular sieve and method for preparing the same |
| CN101618882A (en) * | 2008-07-04 | 2010-01-06 | 中国石油化工股份有限公司 | Method for in-situ synthesis of Y-type molecular sieve |
| CN104340990A (en) * | 2013-07-31 | 2015-02-11 | 中国石油化工股份有限公司 | Method for synthesizing zeolite Y |
| CN105217648A (en) * | 2015-08-19 | 2016-01-06 | 安徽建筑大学 | Method for preparing mesoporous microporous NaY/MCM-41 composite molecular sieve by using coal gangue and silica fume as raw materials |
Non-Patent Citations (2)
| Title |
|---|
| 滕庭庭: "以煤矸石为原料合成Y型沸石及其吸附性能的探究", 《合成化学》 * |
| 腾庭庭: "矸石基NaY型沸石分子筛的合成、改性及在重金属复合污染土壤钝化修复中的应用", 《中国土壤学会土壤环境专业委员会第十九次会议暨"农田土壤污染与修复研讨会"第二届山东省土壤污染防控与修复技术研讨会摘要集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351764A (en) * | 2018-10-25 | 2019-02-19 | 上海十方生态园林股份有限公司 | The passivator of cadmium in one kind of multiple heavy-metal contaminated soils |
| CN114350368A (en) * | 2022-01-17 | 2022-04-15 | 生态环境部南京环境科学研究所 | Method for repairing arsenic-polluted soil by using zeolite-based mineral repair material |
| CN114751425A (en) * | 2022-04-02 | 2022-07-15 | 四川大学 | Preparation method and application of zeolite soil passivator with high iron content |
| CN114751425B (en) * | 2022-04-02 | 2023-04-07 | 四川大学 | Preparation method and application of zeolite soil passivator with high iron content |
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