CN108192638A - It is a kind of for soil-repairing agent of heavy metal pollution and preparation method thereof - Google Patents
It is a kind of for soil-repairing agent of heavy metal pollution and preparation method thereof Download PDFInfo
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- CN108192638A CN108192638A CN201810215747.7A CN201810215747A CN108192638A CN 108192638 A CN108192638 A CN 108192638A CN 201810215747 A CN201810215747 A CN 201810215747A CN 108192638 A CN108192638 A CN 108192638A
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- parts
- soil
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- heavy metal
- clover
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Links
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 241000219793 Trifolium Species 0.000 claims abstract description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- 239000002734 clay mineral Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 17
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 17
- 229920001661 Chitosan Polymers 0.000 claims abstract description 15
- PZNOBXVHZYGUEX-UHFFFAOYSA-N n-prop-2-enylprop-2-en-1-amine;hydrochloride Chemical compound Cl.C=CCNCC=C PZNOBXVHZYGUEX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 13
- 239000011734 sodium Substances 0.000 claims abstract description 13
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920002907 Guar gum Polymers 0.000 claims abstract description 12
- 239000000665 guar gum Substances 0.000 claims abstract description 12
- 229960002154 guar gum Drugs 0.000 claims abstract description 12
- 235000010417 guar gum Nutrition 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 47
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 22
- 230000010355 oscillation Effects 0.000 claims description 14
- 239000012141 concentrate Substances 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 229910052625 palygorskite Inorganic materials 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000010902 straw Substances 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 235000013339 cereals Nutrition 0.000 claims description 5
- 240000000111 Saccharum officinarum Species 0.000 claims description 4
- 235000007201 Saccharum officinarum Nutrition 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 229960000892 attapulgite Drugs 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052900 illite Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 4
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 4
- 229910052624 sepiolite Inorganic materials 0.000 claims description 4
- 235000019355 sepiolite Nutrition 0.000 claims description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 4
- 240000006394 Sorghum bicolor Species 0.000 claims description 3
- 235000015505 Sorghum bicolor subsp. bicolor Nutrition 0.000 claims description 3
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 3
- 235000021307 Triticum Nutrition 0.000 claims description 3
- 240000008042 Zea mays Species 0.000 claims description 3
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 claims description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000009973 maize Nutrition 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- 244000098338 Triticum aestivum Species 0.000 claims 1
- 230000001476 alcoholic effect Effects 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 22
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 abstract description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052753 mercury Inorganic materials 0.000 abstract description 3
- 230000003311 flocculating effect Effects 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- 230000002000 scavenging effect Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 244000303965 Cyamopsis psoralioides Species 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of for soil-repairing agent of heavy metal pollution and preparation method thereof, include the raw material of following parts by weight：25 parts of 45 64 parts of clay mineral, 24 33 parts of stalk, 10 14 parts of chitosan, 58 parts of clover, 69 parts of polydimethyl diallyl ammonium chloride, 8 15 parts of water-soluble poval, 1.5 3 parts of guar gum, 46 parts of sodium carbonate, 5 10 parts of metal oxide and sodium humate.Raw material sources of the present invention are extensive, and under the synergistic effect of various raw materials, the finished product of preparation has good scavenging effect for heavy metal ion such as mercury, chromium, the lead in soil, will not also cause soil hardening, prospect of the application is wide by the means such as flocculating, adsorbing.
Description
Technical field
The present invention relates to soil remediation field, specifically a kind of soil-repairing agent for heavy metal pollution.
Background technology
As industrial structure upgrading, city layout adjust, national large- and-medium size cities are faced with the closing of large quantities of contaminating enterprises
With resettlement problem, city is caused to occur largely leaving, abandoning industrial pollution place, wherein heavy-metal contaminated soil is industrial pollution
A relatively conventional type in place.These contaminated sites face business development mostly and the change of land-use style occur, by
There is chronicity, potentiality and irreversibility to the harm of animals and plants and human body in heavy metal, it should before contaminated soil recycles
Carry out the corresponding health repaired to ensure space enrironment and resident.
For the repairing and treating of heavy-metal contaminated soil, stabilization technology is a kind of more mature and cost-effective skill
Art.Using stabilizer and soil and heavy metal therein hydration reaction, redox, chelating, precipitation, absorption etc. occur for the technology
Physics chemical action, by changing the chemical form of heavy metal in soil or reducing its migration, so as to reach repairing and treating
Effect.So far, have nearly thousand heavy-metal contaminated soil rehablitation projects in American-European and other developed countries and use stabilisation
Technology.It is existing for heavy-metal contaminated soil processing stabilizer mostly based on the hydraulic materials such as cement, lime, gypsum,
Reparation medicament containing cement constituents can cause to make soil original after soil hardening, increase-volume after repairing after soil is added to
Value disappear totally, the soil practical use limitation after reparation is big.
Invention content
The purpose of the present invention is to provide a kind of soil-repairing agent for heavy metal pollution, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution：
A kind of soil-repairing agent for heavy metal pollution includes the raw material of following parts by weight：45-64 parts of clay mineral,
24-33 parts of stalk, 10-14 parts of chitosan, 5-8 parts of clover, 6-9 parts of polydimethyl diallyl ammonium chloride, water-soluble polyethylene
2-5 parts of 8-15 parts of alcohol, 1.5-3 parts of guar gum, 4-6 parts of sodium carbonate, 5-10 parts of metal oxide and sodium humate, clay mineral
Including at least one of attapulgite, sepiolite, palygorskite, illite, montmorillonite and kaolin.
As further embodiment of the present invention：Metal oxide is included in magnesia, sodium oxide molybdena, potassium oxide and zinc oxide
At least one, stalk include one or several kinds of mixing in broomcorn straw, maize straw, wheat stalk and sugarcane stalk
Object.
As further embodiment of the present invention：The grain size of clay mineral is 0.02-0.15mm.
The preparation method of the soil-repairing agent for heavy metal pollution, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 420-500 degrees Celsius, naturally cooled to by step 1
Room temperature and 150-200 mesh is crushed to, obtains the first mixture；
Step 2 crushes clover, is then extracted 80-100 minutes with the hydrochloric acid solution of 0.6-0.8mol/L, clover and salt
The mass ratio of acid solution is 1:Then 8-12 is filtered and is cooled to room temperature, add strong base solution and be adjusted to neutrality, obtain
First extracting solution with the mass fraction of the deionized water of 5-8 times of its volume, 3-4 times of its volume is successively 25-40% by first extracting solution
Ethanol solution and 6-8 times of its volume mass fraction be 50-75% ethanol solution elute, then stir evenly and
20-25 degrees Celsius crystallization 5-6 hours lower, sucks supernatant and is depressured concentration, obtains clover concentrate；
Step 3, by clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide in ball material
Than for 60-75：Ball milling in 1 ball mill obtains the second mixture；
Step 4, by the mixing of chitosan, polydimethyl diallyl ammonium chloride and clover concentrate and sonic oscillation 15-
30 minutes, obtain third mixture；
First mixture, the second mixture and third mixture are stirred by step 5 in water-bath autoclave
Even, bath temperature is 60-75 degrees Celsius, and the pressure of autoclave is 6-8MPa, mixing speed 300-450rpm, then in 30-
It is dry under 40 degrees Celsius, obtain finished product.
As further embodiment of the present invention：In step 4 the power of sonic oscillation be 660-850W, the frequency of sonic oscillation
Rate is 50-60KHz.
Compared with prior art, the beneficial effects of the invention are as follows：Raw material sources of the present invention are extensive, in the collaboration of various raw materials
Under effect, the finished product of preparation has the heavy metal ion such as mercury, chromium, the lead in soil good by the means such as flocculating, adsorbing
Scavenging effect, will not also cause soil hardening, and prospect of the application is wide.
Specific embodiment
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of soil-repairing agent for heavy metal pollution includes the raw material of following parts by weight：45 parts of clay mineral, stalk
24 parts, 10 parts of chitosan, 5 parts of clover, 6 parts of polydimethyl diallyl ammonium chloride, 8 parts of water-soluble poval, guar gum
2 parts of 1.5 parts, 4 parts of sodium carbonate, 5 parts of metal oxide and sodium humate, clay mineral include attapulgite and montmorillonite and kaolinite
The mixture of soil.Metal oxide includes the mixture of magnesia, sodium oxide molybdena and potassium oxide, and stalk uses sugarcane stalk.
The preparation method of the soil-repairing agent for heavy metal pollution, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 480 degrees Celsius, naturally cools to room temperature by step 1
And 160 mesh are crushed to, obtain the first mixture；
Step 2 crushes clover, is then extracted 90 minutes with the hydrochloric acid solution of 0.6mol/L, clover and hydrochloric acid solution
Mass ratio is 1:9, it then filters and is cooled to room temperature, add strong base solution and be adjusted to neutrality, obtain just extracting solution, it will
First extracting solution successively with the deionized water of 6 times of its volume, 3 times of its volume mass fraction for 32% ethanol solution and its body
The ethanol solution that the mass fraction of 6 times of product is 65% elutes, and then stirs evenly and in 24 degrees Celsius of lower crystallizations 6 hours, inhales
It removes supernatant and is depressured concentration, obtain clover concentrate；
Step 3, by clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide in ball material
Than being 66：Ball milling in 1 ball mill obtains the second mixture；
Step 4, by the mixing of chitosan, polydimethyl diallyl ammonium chloride and clover concentrate and sonic oscillation 24
Minute, obtain third mixture；
First mixture, the second mixture and third mixture are stirred by step 5 in water-bath autoclave
Even, bath temperature is 66 degrees Celsius, and the pressure of autoclave is 6.8MPa, mixing speed 360rpm, then under 36 degrees Celsius
It is dry, obtain finished product.
Embodiment 2
A kind of soil-repairing agent for heavy metal pollution includes the raw material of following parts by weight：52 parts of clay mineral, stalk
28 parts, 11.5 parts of chitosan, 6 parts of clover, 7.5 parts of polydimethyl diallyl ammonium chloride, 11 parts of water-soluble poval, Guar
3 parts of 2 parts of bean gum, 4.8 parts of sodium carbonate, 7.5 parts of metal oxide and sodium humate, clay mineral include sepiolite, palygorskite and
Illitic mixture.The grain size of clay mineral is 0.12mm.
The preparation method of the soil-repairing agent for heavy metal pollution, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 450 degrees Celsius, naturally cools to room temperature by step 1
And 180 mesh are crushed to, obtain the first mixture；
Step 2 crushes clover, is then extracted 88 minutes with the hydrochloric acid solution of 0.75mol/L, clover and hydrochloric acid solution
Mass ratio be 1:11, it then filters and is cooled to room temperature, add strong base solution and be adjusted to neutrality, obtain just extracting
Liquid, by first extracting solution successively with the mass fraction of the deionized water of 7 times of its volume, 4 times of its volume be 36% ethanol solution with
And its ethanol solution that the mass fraction of 7 times of volume is 66% elutes, and then stirs evenly and small in 24 degrees Celsius of lower crystallizations 5
When, it sucks supernatant and is depressured concentration, obtain clover concentrate；
Step 3, by clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide in ball material
Than being 72：Ball milling in 1 ball mill obtains the second mixture；
Step 4, by the mixing of chitosan, polydimethyl diallyl ammonium chloride and clover concentrate and sonic oscillation 24
Minute, obtain third mixture；
First mixture, the second mixture and third mixture are stirred by step 5 in water-bath autoclave
Even, bath temperature is 70 degrees Celsius, and the pressure of autoclave is 7.2MPa, mixing speed 360rpm, then under 38 degrees Celsius
It is dry, obtain finished product.
Embodiment 3
A kind of soil-repairing agent for heavy metal pollution includes the raw material of following parts by weight：61 parts of clay mineral, stalk
30 parts, 13 parts of chitosan, 7.5 parts of clover, 8 parts of polydimethyl diallyl ammonium chloride, 14 parts of water-soluble poval, cluster bean
4.2 parts of 2.5 parts of glue, 5.5 parts of sodium carbonate, 9 parts of metal oxide and sodium humate, clay mineral include palygorskite, illite, illiteracy
De- stone and kaolinic mixture.The grain size of clay mineral is 0.08mm.
The preparation method of the soil-repairing agent for heavy metal pollution, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 485 degrees Celsius, naturally cools to room temperature by step 1
And 200 mesh are crushed to, obtain the first mixture；
Step 2 crushes clover, is then extracted 88 minutes with the hydrochloric acid solution of 0.75mol/L, clover and hydrochloric acid solution
Mass ratio be 1:10, it then filters and is cooled to room temperature, add strong base solution and be adjusted to neutrality, obtain just extracting
Liquid, by first extracting solution successively with the mass fraction of the deionized water of 7 times of its volume, 3 times of its volume be 36% ethanol solution with
And its ethanol solution that the mass fraction of 7 times of volume is 68% elutes, and then stirs evenly and small in 24 degrees Celsius of lower crystallizations 6
When, it sucks supernatant and is depressured concentration, obtain clover concentrate；
Step 3, by clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide in ball material
Than being 65：Ball milling in 1 ball mill obtains the second mixture；
Step 4, by the mixing of chitosan, polydimethyl diallyl ammonium chloride and clover concentrate and sonic oscillation 28
Minute, the power of sonic oscillation is 750W, and the frequency of sonic oscillation is 54KHz, obtains third mixture；
First mixture, the second mixture and third mixture are stirred by step 5 in water-bath autoclave
Even, bath temperature is 66 degrees Celsius, and the pressure of autoclave is 7.2MPa, mixing speed 360rpm, then under 34 degrees Celsius
It is dry, obtain finished product.
Embodiment 4
A kind of soil-repairing agent for heavy metal pollution includes the raw material of following parts by weight：64 parts of clay mineral, stalk
33 parts, 14 parts of chitosan, 8 parts of clover, 9 parts of polydimethyl diallyl ammonium chloride, 15 parts of water-soluble poval, guar gum
5 parts of 3 parts, 6 parts of sodium carbonate, 10 parts of metal oxide and sodium humate, clay mineral include attapulgite, sepiolite, palygorskite,
Illite, montmorillonite and kaolinic mixture.Metal oxide is included in magnesia, sodium oxide molybdena, potassium oxide and zinc oxide
At least one, stalk include the mixture of broomcorn straw, maize straw, wheat stalk and sugarcane stalk.The grain size of clay mineral
For 0.14mm.
The preparation method of the soil-repairing agent for heavy metal pollution, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 500 degrees Celsius, naturally cools to room temperature by step 1
And 180 mesh are crushed to, obtain the first mixture；
Step 2 crushes clover, is then extracted 90 minutes with the hydrochloric acid solution of 0.6mol/L, clover and hydrochloric acid solution
Mass ratio is 1:11, it then filters and is cooled to room temperature, add strong base solution and be adjusted to neutrality, obtain just extracting solution,
By first extracting solution successively with the mass fraction of the deionized water of 6 times of its volume, 4 times of its volume be 36% ethanol solution and its
The ethanol solution that the mass fraction that 8 times of volume is 70% elutes, and then stirs evenly and in 25 degrees Celsius of lower crystallizations 6 hours,
It sucks supernatant and is depressured concentration, obtain clover concentrate；
Step 3, by clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide in ball material
Than being 75：Ball milling in 1 ball mill obtains the second mixture；
Step 4, by the mixing of chitosan, polydimethyl diallyl ammonium chloride and clover concentrate and sonic oscillation 22
Minute, the power of sonic oscillation is 800W, and the frequency of sonic oscillation is 60KHz, obtains third mixture；
First mixture, the second mixture and third mixture are stirred by step 5 in water-bath autoclave
Even, bath temperature is 72 degrees Celsius, and the pressure of autoclave is 7MPa, mixing speed 450rpm, is then done under 38 degrees Celsius
It is dry, obtain finished product.
Comparative example 1
Except without clover, remaining component and preparation method are same as Example 2.
Comparative example 2
Component with embodiment 4, but preparation method is only that various components are crushed and mixed.
It selects the heavy-metal contaminated soil of equivalent and carries out heavy metal analysis, measure：Cadmium content 0.28mg/kg, chromium contain
475mg/kg, mercury content 0.64mg/kg, lead content 386mg/kg are measured, arsenic content 42mg/kg, copper content 105mg/kg take equivalent
The product of embodiment 1-4 and the product of comparative example 1-2 be applied to the surface of heavy-metal contaminated soil and be stirred uniformly,
Then the water and surface covering curing film for adding in equivalent conserve 8-10 days, then sampled, and sampling the results are shown in Table 1.
Table 1
The effect of embodiment 1-4 products that as can be seen from Table 1 prepared by the present invention is significantly better than the production of comparative example 1-2
Product have good removing to act on cadmium, mercury ion and meet national standard.
Stalk is prepared into the present invention charcoal and so that sodium carbonate enters in the hole of charcoal as matrix, then uses
Clay mineral, water-soluble poval, guar gum etc. are prepared into the second mixture, to chitosan and are gathered using clover concentrate
Dimethyl diallyl ammonium chloride is modified, by the first mixture, the second mixture and third mixture in autoclave
Modification of chitosan and modified polydimethyl diallyl ammonium chloride are attached to matrix surface and promote its absorption, wadding by reaction
Solidifying and sedimentation heavy metal ability, meets the use demand of people, product of the invention is not using cementitious material, to soil
Soil hardening and other effects will not be caused after reparation, harmful effect will not be caused using soil to people.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
1. a kind of soil-repairing agent for heavy metal pollution, which is characterized in that include the raw material of following parts by weight：Clay mineral
45-64 parts, it is 24-33 parts of stalk, 10-14 parts of chitosan, 5-8 parts of clover, 6-9 parts of polydimethyl diallyl ammonium chloride, water-soluble
Property 2-5 parts of 8-15 parts of polyvinyl alcohol, 1.5-3 parts of guar gum, 4-6 parts of sodium carbonate, 5-10 parts of metal oxide and sodium humate,
Clay mineral includes at least one of attapulgite, sepiolite, palygorskite, illite, montmorillonite and kaolin.
2. the soil-repairing agent according to claim 1 for heavy metal pollution, which is characterized in that the metal oxide
Including at least one of magnesia, sodium oxide molybdena, potassium oxide and zinc oxide, stalk includes broomcorn straw, maize straw, Wheat Straw
One or several kinds of mixtures in stalk and sugarcane stalk.
3. the soil-repairing agent according to claim 1 for heavy metal pollution, which is characterized in that the clay mineral
Grain size is 0.02-0.15mm.
4. a kind of preparation method of the soil-repairing agent as described in any one of claims 1-3 for heavy metal pollution, feature
It is, is as follows：
Sodium carbonate with stalk is mixed and completely cuts off air and heated under 420-500 degrees Celsius, naturally cools to room temperature by step 1
And 150-200 mesh is crushed to, obtains the first mixture；
Step 2 crushes clover, is then extracted 80-100 minutes with the hydrochloric acid solution of 0.6-0.8mol/L, clover is molten with hydrochloric acid
The mass ratio of liquid is 1:Then 8-12 is filtered and is cooled to room temperature, add strong base solution and be adjusted to neutrality, and obtains just carrying
Liquid is taken, with the mass fraction of the deionized water of 5-8 times of its volume, 3-4 times of its volume is successively the second of 25-40% by first extracting solution
Alcoholic solution and the ethanol solution that the mass fraction of 6-8 times of its volume is 50-75% elute, and then stir evenly and in 20-25
It degrees Celsius lower crystallization 5-6 hours, sucks supernatant and is depressured concentration, obtain clover concentrate；
Clay mineral, water-soluble poval, guar gum, sodium humate and metal oxide be by step 3 in ratio of grinding media to material
60-75：Ball milling in 1 ball mill obtains the second mixture；
Chitosan, polydimethyl diallyl ammonium chloride and clover concentrate are mixed and sonic oscillation 15-30 divide by step 4
Clock obtains third mixture；
First mixture, the second mixture and third mixture are uniformly mixed, water by step 5 in water-bath autoclave
Bath temperature is 60-75 degrees Celsius, and the pressure of autoclave is 6-8MPa, mixing speed 300-450rpm, then Celsius in 30-40
The lower drying of degree, obtains finished product.
5. the preparation method of the soil-repairing agent according to claim 4 for heavy metal pollution, which is characterized in that described
The power of sonic oscillation is 660-850W in step 4, and the frequency of sonic oscillation is 50-60KHz.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913226A (en) * | 2019-03-20 | 2019-06-21 | 武汉山友爆破科技工程有限公司 | A kind of soil-repairing agent and preparation method thereof and restorative procedure |
| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
| CN111394103A (en) * | 2020-04-02 | 2020-07-10 | 北京泷涛环境修复有限公司 | Mercury and polychlorinated biphenyl compound polluted soil remediation agent, preparation and application |
| CN111662727A (en) * | 2020-07-17 | 2020-09-15 | 北京市环境保护科学研究院 | Improver for soil polluted by primary explosive |
| EP3789353A1 (en) * | 2019-09-09 | 2021-03-10 | Nanjing Institute Of Geography & Limnology. Chinese Academy Of Sciences | Ecological remediation method for water bodies rich in high-turbidity colloidal particles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106669631A (en) * | 2016-12-30 | 2017-05-17 | 郑州掌盟网络科技有限公司 | Heavy metal ion treating agent and preparation method thereof |
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2018
- 2018-03-15 CN CN201810215747.7A patent/CN108192638B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106669631A (en) * | 2016-12-30 | 2017-05-17 | 郑州掌盟网络科技有限公司 | Heavy metal ion treating agent and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913226A (en) * | 2019-03-20 | 2019-06-21 | 武汉山友爆破科技工程有限公司 | A kind of soil-repairing agent and preparation method thereof and restorative procedure |
| EP3789353A1 (en) * | 2019-09-09 | 2021-03-10 | Nanjing Institute Of Geography & Limnology. Chinese Academy Of Sciences | Ecological remediation method for water bodies rich in high-turbidity colloidal particles |
| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
| CN111394103A (en) * | 2020-04-02 | 2020-07-10 | 北京泷涛环境修复有限公司 | Mercury and polychlorinated biphenyl compound polluted soil remediation agent, preparation and application |
| CN111394103B (en) * | 2020-04-02 | 2021-10-26 | 北京泷涛环境修复有限公司 | Mercury and polychlorinated biphenyl compound polluted soil remediation agent, preparation and application |
| CN111662727A (en) * | 2020-07-17 | 2020-09-15 | 北京市环境保护科学研究院 | Improver for soil polluted by primary explosive |
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