CN107931322A - A kind of method using zeroth order Nanoscale Iron original position continuous repair soil - Google Patents
A kind of method using zeroth order Nanoscale Iron original position continuous repair soil Download PDFInfo
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- CN107931322A CN107931322A CN201711177537.5A CN201711177537A CN107931322A CN 107931322 A CN107931322 A CN 107931322A CN 201711177537 A CN201711177537 A CN 201711177537A CN 107931322 A CN107931322 A CN 107931322A
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- soil
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- original position
- zeroth order
- cellulose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D11/00—Other features of manufacture
- D01D11/06—Coating with spinning solutions or melts
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/06—Braid or lace serving particular purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The present invention provides a kind of method using zeroth order Nanoscale Iron original position continuous repair soil.Using molysite, cellulose, lithium chloride, N, N dimethylacetylamides, polyalcohol, trifluoroacetic acid, ionic liquid preparation become spinning solution, the zeroth order Nanoscale Iron of line state is reduced to after spinning, cellulose composite filament will be made through electrostatic spinning, again twisting is carried out with glass fibre, the reduction sieve of diamond-shaped meshes is made, and on portable refining machine, quickly reduced during soil in-situ refines and collect heavy metal ion, heavy metal ion is completely separated out from soil, so as to fulfill continuous repair soil in situ.It the method overcome the problem of conventional method nano zero valence iron is difficult to effectively disperse in the soil, it is high to the reduction efficiency of heavy metal ion, heavy metal ion in soil can be reduced and be completely separated from soil, and progress synchronous with soil thinning process, simplified operation and the saving energy.
Description
Technical field
The present invention relates to technical field of soil remediation, and in particular to by Nanoscale Iron rehabilitating soil, more particularly to one kind
Utilize the method for zeroth order Nanoscale Iron original position continuous repair soil.
Background technology
In recent years, since population sharp increase, industry are grown rapidly, solid waste is constantly stacked and inclined to soil surface
, harmful waste water is constantly permeated into soil, and the pernicious gas and floating dust in air also constantly land in the soil with rainwater, lead
Soil pollution is caused.Soil pollution mainly has four classes：Chemical pollutant, physical pollutant, biological pollutant and radioactive pollution
Thing.Wherein especially with heavy metal pollution of soil harm is big and influences deeply, since heavy metal is cannot to be decomposed by the Institute of Micro-biology of soil
, migration is small, is easily enriched among soil, when heavy metal in soil content exceedes their environmental carrying capacity, just directly
Plant is acted on, is enriched with plant, suppresses the growth of the root system of plant, plant leaf blade is turned to be yellow, influences the photosynthetic work of plant
With so that plant growth is slow, plant is short and small, reduces yield, even has no harvest.Agricultural development to China causes great shadow
Ring, and can be moved to by food chain in animal, human body, endanger the health of human and animal.Therefore soil restoring technology is ground
Hair and application are increasingly subject to countries in the world to pay attention to.
At present, the method for domestic and international soil remediation mainly has physical restoration, chemical restoration and biological restoration etc., root
According to the difference of repair mode, recovery technique can be divided into in-situ immobilization and showering again.Based technique for in-situ remediation refers to not excavating
The process administered of soil, to soil without too large disturbances.Advantage is economical and effective, on the spot to pollutant carry out degraded and
Attenuation, can repair profound soil pollution；Shortcoming is " three wastes " produced during more difficult control process, for being permitted
The soil of more combined pollutions is grown with repairing efficiency, it is difficult to reaches the requirement that China's urban soil is quickly repaired, limiting it should
Use scope.Showering technology refers to the process of repair the soil after excavation.Showering technological merit is to processing
The condition control of process is preferable, is contacted with pollutant preferably, is easy to control " three wastes " discharge produced in processing procedure；Shortcoming is
Need to cut the earth and transport before treatment, processed soil can be influenced and reused, to the more demanding of prosthetic appliance, expense compared with
It is high.
For the above situation, if coordinating repair materials, it is possible to achieve preferable in-situ immobilization soil, in the prior art,
Nano zero valence iron because of its superior absorption property, stronger reducing activity, in rehabilitating soil the research of pollutant also increasingly by
Pay attention to.The approach of nano zero valence iron repairing polluted soil is the reproducibility Zero-valent Iron using nano zero valence iron, is occurred with pollutant
Reaction, by high toxicity, the Pb of high activity2+、As5+、Cr6+Removed Deng reduction, reducing its migration and biology in the soil can profit
With property, extensive one heavy metal, inorganic pollution and organic pollution in soil pollutant can be applied to.But because of nano zero valence iron
Particulate is more easy to reunite in aqueous, so as to influence its application because it has magnetism.Nano zero valence iron exists in oxygen
In the case of, easily it is oxidized to ferrous iron or ferric iron；In addition, dissolved oxygen and other oxides can cause nano zero valence iron table
Face is passivated, and prevents reaction from further carrying out, while also result in the loss of quite a few nano zero valence iron, thus in its application
Need to carry out more in-depth study in soil remediation.
Chinese invention patent application number 201611200087.2 discloses a kind of nano zero valence iron/calper calcium peroxide collaboration and repairs
The method of organochlorine pesticide pollution soil, this method are molten by the way that organochlorine pesticide pollution soil is made the mixing of mud state soil
Liquid, adds a certain amount of citric acid, nano zero valence iron and calper calcium peroxide, vibrates the degradation rate of soil organo-chlorine pesticide after 3~24h
More than 85% can be reached.
Chinese invention patent application number 201510388818.X discloses a kind of heavy metal chromium pollution soil remediation material
Prepare and application, this method first prepare charcoal particle, be added into solution made of ferrous salt, carry out reacting drying, grinding
Loaded nano zero-valent iron particle is obtained, gained loaded nano zero-valent iron particle is added in soil, mixes, adds deoxidation
Water, is repaired.
Chinese invention patent application number 201410546895.9 discloses a kind of circulation flow field reinforced nano iron rehabilitating soil
In heavy metal technique, comprise the following steps：CMC is dissolved in distilled water, is placed in starvation container, constant temperature vibration heats, to
Nitrogen is passed through in CMC solution, by FeSO4·7H2O solution is added in CMC solution and stirred, by NaBH4Solution drips dropwise and at the uniform velocity
Enter, at the uniform velocity isothermal vibration, be made and stabilize nano zero valence iron suspension；Digging, which is bored, in soil region adds well；Will be steady with circulating pump
Surely nano zero valence iron suspension injection inlet tube is changed, into injection well and extraction well, rear pause, extracts from extraction well, to note
Enter in well and inject, until during 24h, stop injection；From extraction well extraction reduction liquid and to injection well inject, with heating rod with
Temperature controller carries out thermostatic processing to reduction liquid, adds acid-base buffer, adjusts the pH value of reduction liquid.
Chinese invention patent application number 201510770450.3 discloses a kind of method of in-situ immobilization contaminated soil, bag
Contain：Activate solubilising, adsorption and enrichment, oxidation reuse.Activation solubilising-adsorption and enrichment-oxid-reclamatiom joint the in-situ immobilization of the invention
The method of contaminated soil, have it is easy to operate, cost is low, less cost of power；Meanwhile the method material therefor is environment friend
Environmental concerns will not will not be produced secondary pollution by good section bar material.
According to above-mentioned, based technique for in-situ remediation repairing efficiency length and difficult control, showering technique influence soil in existing scheme
Earth reuses and of high cost, and conventional method coordinates in the soil restoring technology of nano zero valence iron, and Yin Qiyi reunites, it is difficult to
Nano zero valence iron is effectively dispersed in soil, high surface area properties cannot show, and in addition easily oxidation and surface passivation, prevents
Reaction further carries out, and causes reduction efficiency not high, while also result in the loss of quite a few nano zero valence iron, but also
Heavy metal after original can only be fixed temporarily, and be difficult to isolate from soil.
The content of the invention
For in current soil restoring technology, based technique for in-situ remediation repairing efficiency is long and hardly possible controls, showering technology shadow
Soil is rung to reuse and of high cost, and conventional method coordinates in the soil in-situ recovery technique of nano zero valence iron, nano zero valence iron
Easily reunite and be difficult to effectively disperse in the soil, high surface area properties cannot show, easily oxidation and surface passivation, reduction effect
Rate is low, and the heavy metal after reduction can only be fixed temporarily, and is difficult to isolate from soil, and the present invention proposes that one kind utilizes zero
The method of valency Nanoscale Iron original position continuous repair soil, so as to effectively increase the reduction efficiency of zeroth order Nanoscale Iron a, it is ensured that huge sum of money
Belong to the permanent removing of ion.
Concrete technical scheme of the present invention is as follows：
A kind of method using zeroth order Nanoscale Iron original position continuous repair soil, zeroth order Nanoscale Iron original position continuous repair soil
Method and process are：
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and 2 ~ 3h of high-speed stirred makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed
Sodium borohydride solution reacts 1-2h, iron ion is formed zeroth order Nanoscale Iron, obtains cellulose composite filament；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
Preferably, the molysite is at least one of ferric sulfate, ferric phosphate, ferric nitrate or iron halide.
Preferably, the cellulose is by timber, cotton, cotton linter, wheat straw, straw, reed, fiber crops, mulberry skin, paper mulberry skin or sugarcane
At least one of slag is made.
Preferably, the polyalcohol is at least one of ethylene glycol, glycerine, trimethylolpropane or pentaerythrite.
Preferably, the ionic liquid is 1- butyl -3- methylimidazole chlorinations ionic liquid, 1- ethyl -4- tert-butyl group pyrroles
Pyridine iodine, 1- butyl -3- methyl imidazolium tetrafluoroborates, triphenylphosphine quaternary phosphine tosilate, tributylphosphine quaternary phosphine hydrogen sulfate
At least one of salt or triphenylphosphine quaternary phosphine disulfate.
Preferably, spinning solution composition by weight, wherein molysite 15-20 parts, 25-30 parts of cellulose, lithium chloride
0.5 ~ 1 part, 3 ~ 4 parts of DMAC N,N' dimethyl acetamide, 2 ~ 3 parts of polyalcohol, 0.5 ~ 1 part of trifluoroacetic acid, 1-2 parts of ionic liquid, water 30-
50 parts.
Preferably, the glass fibre is continuous fiber.
Preferably, the mass ratio of the cellulose composite filament and glass fibre is 2:1~3:1.
Preferably, the electrostatic spinning process uses electrostatic spinning machine, is made of power supply, spinning appts and receiver, work(
Rate is 500 ~ 2000W, and maximum output voltage is 20 ~ 50kV；The receiver can be drum-type, frame-type, separate type, thin butterfly
Or one kind in water-bath type；
The spinning nozzle quantity of the spinning appts is 50 ~ 200, and internal diameter is 0.8 ~ 1.2mm；
During the electrostatic spinning, the spacing between spinning nozzle and receiver is arranged to 10 ~ 20cm, electric field strength for 20 ~
30kV。
Preferably, the braider can use Horizontal weave machine or vertical braider, and power of motor is 3.8 ~ 6kW.
Preferably, the grid configuration of the reduction sieve is diamond shape, grid aperture 1-3mm.
The electrostatic spinning principle of cellulose composite spinning liquid is：Effect of the composite solution of cellulose and molysite in syringe
Lower ejection, and drop is formed in Capillary, the electrode of immersion assigns the solution high potential in syringe, guides oneself in solution
By charge migration and it is gathered in capillary end.With the increase of electric field strength, the fluid semispherical surface of capillary end is drawn
Taylor cone is grown to, is finally sprayed from cone end, flies to the receiver containing reversed charge.Jet stream passes through air in flight course
Dried, obtain dry fiber, i.e. cellulose composite filament on the receiver.
During above-mentioned electrostatic spinning, the electric field strength of applied voltage, the distance of spinning nozzle and receiver, spinning solution
The preparation of concentration, spinning solution flow rate and environmental condition to composite filament plays material impact.Electric field strength increase can
More fluids are made to be sprayed from spinning nozzle and cause sedimentation rate to increase, so as to cause the shape and fibre structure of jet stream starting point
The change of form, and the too small decline that can cause spinning speed of electric field strength even results in fracture of wire, therefore should strictly control
Electric field strength processed.Since the structure of fiber dependent on sedimentation time, solvent evaporation time and swings interval with form, because
This no matter concentration of dope height, receiver and spinning nozzle can all produce wet fiber or bead structure apart from too short, and distance
It is long and have to form the risk of fracture of wire, therefore should be integrated according to electric field strength, concentration of dope and flow rate and determine receiver
With the spacing of spinning nozzle.The concentration of spinning solution mainly influences into silk diameter, and excessive concentration can cause fiber size into bimodal distribution,
Form a beading, concentration is too low to cause diameter uneven or local meticulous, and the cellulose concentration in spinning solution is advisable with 1 ~ 2%.
Spinning solution flow rate equally influences fibre diameter and hole diameter, should rationally control.In addition, the environmental condition around spinning nozzle
Also fibre property can be influenced, relative humidity is excessive to cause fiber drying to be not thorough, and can be formed and tangled on receiver surface.
And cellulose composite filament and glass fibre establishment reduction sieve when, it should be ensured that sieve it is each suitable to performance, make
It is not destroyed when reducing in the soil and collecting heavy metal ion or corrodes.Cellulose composite filament should uniformly divide with glass fibre
Cloth, so that the sieve reducing power of establishment is uniform and mechanical strength is uniform.The grid of sieve should be diamond shape, to prevent the cunning of silk thread
It is dynamic, make it have more preferable lear energy.
Zeroth order Nanoscale Iron is prepared into fiber and is used for sieve, reduction sieve is installed on portable refining machine, by soil
Original position refinement, collection heavy metal ion is quickly reduced through reducing sieve.Its significant advantage is by the heavy metal ion in soil
Reduce and be completely separated out from soil, overcome existing nano zero valence iron and be difficult to be effectively dispersed in soil, reduction efficiency is not
The defects of height, the heavy metal after reduction cannot be separated from soil.By the method for heavy metal ion in rehabilitating soil of the present invention with
Physisorphtion, chemical complexometry are compared, and in reduction rate, reduction efficiency and separated completeness, are had obvious excellent
Gesture..The present invention provides a kind of method using zeroth order Nanoscale Iron original position continuous repair soil, compared with prior art, it is prominent
The characteristics of going out and excellent effect are：
1st, the method using zeroth order Nanoscale Iron original position continuous repair soil is proposed.
2nd, this method is used for sieve by the way that zeroth order Nanoscale Iron will be prepared into fiber, and reduction sieve is installed on portable refine
Machine, by being refined to soil in-situ, collection heavy metal ion is quickly reduced through reducing sieve.It is difficult to overcome existing nano zero valence iron
The defects of to be effectively dispersed in soil, reduction efficiency is not high, and the heavy metal after reduction cannot be separated from soil.
3rd, the method for the present invention in-situ rapid renovation soil, process is simple, easily operated.
Embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Scope be only limitted to following example.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 3h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed boron
Sodium hydride solution reacts 1h, obtains cellulose composite filament；Molysite is ferric sulfate；Polyalcohol is trimethylolpropane；Ionic liquid
For 1- butyl -3- methyl imidazolium tetrafluoroborates；Spinning solution forms by weight, wherein 15 parts of molysite, 25 parts of cellulose, chlorine
Change 0.5 part of lithium, 3 parts of DMAC N,N' dimethyl acetamide, 2 parts of polyalcohol, 0.5 part of trifluoroacetic acid, 1 part of ionic liquid, 30 parts of water；Electrostatic
The power of spinning-drawing machine is 500W, maximum output voltage 30kV；Receiver can be separate type；The spinning nozzle quantity of spinning appts is
200, internal diameter 1mm；Spacing between spinning nozzle and receiver is arranged to 20cm, electric field strength 22kV；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；Glass fibers
The particle diameter of dimension is 10 μm；The mass ratio of cellulose composite filament and glass fibre is 3:1；Braider uses vertical braider, electricity
Acc power is 3.8kW, mesh diameter 2mm；The grid configuration for reducing sieve is diamond shape, and wire side width is 2m, a diameter of into silk
1mm；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
The method of embodiment 1 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Embodiment 2
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 2h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed boron
Sodium hydride solution reacts 2h, obtains cellulose composite filament；Molysite is ferric nitrate；Polyalcohol is pentaerythrite；Ionic liquid is three
Phenylphosphine quaternary phosphine disulfate；Spinning solution form by weight, wherein 20 parts of molysite, 30 parts of cellulose, 0.5 part of lithium chloride,
3 parts of DMAC N,N' dimethyl acetamide, 2 parts of polyalcohol, 1 part of trifluoroacetic acid, 1 part of ionic liquid, 50 parts of water；The power of electrostatic spinning machine
For 1300W, maximum output voltage 30kV；Receiver can be thin butterfly；The spinning nozzle quantity of spinning appts is 50, and internal diameter is
1.2mm；Spacing between spinning nozzle and receiver is arranged to 10cm, electric field strength 30kV；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；Glass fibers
The particle diameter of dimension is 30 μm；The mass ratio of cellulose composite filament and glass fibre is 3:1；Braider uses Horizontal weave machine, electricity
Acc power is 3.8kW, mesh diameter 1mm；The grid configuration for reducing sieve is diamond shape, and wire side width is 3m, a diameter of into silk
4mm；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
The method of embodiment 2 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Embodiment 3
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 2.5h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed
Sodium borohydride solution reacts 2h, obtains cellulose composite filament；Molysite is iron halide；Polyalcohol is pentaerythrite；Ionic liquid is
Tributylphosphine quaternary phosphine disulfate；Spinning solution form by weight, wherein 15 parts of molysite, 30 parts of cellulose, 1 part of lithium chloride,
4 parts of DMAC N,N' dimethyl acetamide, 3 parts of polyalcohol, 0.5 part of trifluoroacetic acid, 2 parts of ionic liquid, 40 parts of water；The work(of electrostatic spinning machine
Rate is 1000W, maximum output voltage 30kV；Receiver can be water-bath type；The spinning nozzle quantity of spinning appts is 150, interior
Footpath is 1.2mm；Spacing between spinning nozzle and receiver is arranged to 15cm, electric field strength 22kV；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；Glass fibers
The particle diameter of dimension is 15 μm；The mass ratio of cellulose composite filament and glass fibre is 3:1；Braider uses vertical braider, electricity
Acc power is 5kW, mesh diameter 2mm；The grid configuration for reducing sieve is diamond shape, and wire side width is 2m, a diameter of into silk
3mm；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
The method of embodiment 3 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Embodiment 4
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 3h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed boron
Sodium hydride solution reacts 1h, obtains cellulose composite filament；Molysite is ferric nitrate；Polyalcohol is trimethylolpropane；Ionic liquid
For 1- butyl -3- methyl imidazolium tetrafluoroborates；Spinning solution forms by weight, wherein 15 parts of molysite, 25 parts of cellulose, chlorine
Change 0.5 part of lithium, 3 parts of DMAC N,N' dimethyl acetamide, 2 parts of polyalcohol, 0.5 part of trifluoroacetic acid, 2 parts of ionic liquid, 50 parts of water；Electrostatic
The power of spinning-drawing machine is 1000W, maximum output voltage 30kV；Receiver can be separate type；The spinning nozzle quantity of spinning appts
For 200, internal diameter 1mm；Spacing between spinning nozzle and receiver is arranged to 18cm, electric field strength 22kV；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；Glass fibers
The particle diameter of dimension is 30 μm；The mass ratio of cellulose composite filament and glass fibre is 3:1；Braider uses vertical braider, electricity
Acc power is 4kW, mesh diameter 3mm；The grid configuration for reducing sieve is diamond shape, and wire side width is 3m, a diameter of into silk
2mm；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
The method of embodiment 4 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Embodiment 5
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 2h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed boron
Sodium hydride solution reacts 1h, obtains cellulose composite filament；Molysite is ferric phosphate；Polyalcohol is glycerine；Ionic liquid is 1- second
Base -4- tert .-butylpyridine iodine；Spinning solution forms by weight, wherein 20 parts of molysite, 25 parts of cellulose, 1 part of lithium chloride, N, N-
3 parts of dimethylacetylamide, 2 parts of polyalcohol, 0.5 part of trifluoroacetic acid, 2 parts of ionic liquid, 35 parts of water；The power of electrostatic spinning machine is
2000W, maximum output voltage 20kV；Receiver can be frame-type；The spinning nozzle quantity of spinning appts is 200, and internal diameter is
0.8mm；Spacing between spinning nozzle and receiver is arranged to 20cm, electric field strength 30kV；
（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；Glass fibers
The particle diameter of dimension is 10 μm；The mass ratio of cellulose composite filament and glass fibre is 2:1；Braider uses vertical braider, electricity
Acc power is 3.8kW, mesh diameter 2mm；The grid configuration for reducing sieve is diamond shape, and wire side width is 2m, a diameter of into silk
4mm；
（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil,
Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original
Position continuous repair soil.
The method of embodiment 5 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Comparative example 1
（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion
Liquid mixes, and high-speed stirred 2h makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed boron
Sodium hydride solution reacts 1h, obtains cellulose composite filament；Molysite is ferric phosphate；Polyalcohol is glycerine；Ionic liquid is 1- second
Base -4- tert .-butylpyridine iodine；Spinning solution forms by weight, wherein 20 parts of molysite, 25 parts of cellulose, 1 part of lithium chloride, N, N-
3 parts of dimethylacetylamide, 2 parts of polyalcohol, 0.5 part of trifluoroacetic acid, 2 parts of ionic liquid, 35 parts of water；The power of electrostatic spinning machine is
2000W, maximum output voltage 20kV；Receiver can be frame-type；The spinning nozzle quantity of spinning appts is 200, and internal diameter is
0.8mm；Spacing between spinning nozzle and receiver is arranged to 20cm, electric field strength 30kV；
（2）Using braider by step（1）Cellulose composite filament be directly used in, rehabilitating soil compound with soil.
The method of comparative example 1 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Comparative example 2
Commercially available zeroth order Nanoscale Iron is directly scattered to carry out rehabilitating soil with soil.
The method of comparative example 2 reduces and collects heavy metal in soil ion, to Pb2+、As5+、Cr6+Reduction rate, reduction effect
Rate and separated completeness are as shown in table 1.
Table 1：
Claims (8)
- A kind of 1. method using zeroth order Nanoscale Iron original position continuous repair soil, it is characterised in that the zeroth order Nanoscale Iron is in situ The method and process of continuous repair soil be：（1）Molysite is soluble in water, and with cellulose, lithium chloride, n,N-dimethylacetamide, polyalcohol, trifluoroacetic acid, ion Liquid mixes, and 2 ~ 3h of high-speed stirred makes cellulose dissolution, is made into spinning solution, and carries out electrostatic spinning, and obtained spinning is immersed Sodium borohydride solution reacts 1-2h, obtains cellulose composite filament；（2）Using braider by step（1）Cellulose composite filament and glass fibre composite twist be made for reduction sieve；（3）By step（2）Reduction sieve be installed on portable refining machine, during refinement in situ is carried out to soil, Reduction sieve quickly reduces and collects heavy metal ion, makes heavy metal ion be completely separated out from soil, so as to fulfill original Position continuous repair soil.
- A kind of 2. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute Molysite is stated as at least one of ferric sulfate, ferric phosphate, ferric nitrate or iron halide；The cellulose is short by timber, cotton, cotton At least one of suede, wheat straw, straw, reed, fiber crops, mulberry skin, paper mulberry skin or bagasse are made；The polyalcohol is ethylene glycol, third At least one of triol, trimethylolpropane or pentaerythrite；The ionic liquid for the -3- methylimidazoles chlorination of 1- butyl from Sub- liquid, 1- ethyl -4- tert .-butylpyridines iodine, 1- butyl -3- methyl imidazolium tetrafluoroborates, triphenylphosphine quaternary phosphine are to toluene sulphur At least one of hydrochlorate, tributylphosphine quaternary phosphine disulfate or triphenylphosphine quaternary phosphine disulfate.
- A kind of 3. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute State spinning solution composition by weight, wherein molysite 15-20 parts, 25-30 parts of cellulose, 0.5 ~ 1 part of lithium chloride, N, N- dimethyl 3 ~ 4 parts of acetamide, 2 ~ 3 parts of polyalcohol, 0.5 ~ 1 part of trifluoroacetic acid, 1-2 parts of ionic liquid, 30-50 parts of water.
- A kind of 4. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：The electrostatic spinning process uses electrostatic spinning machine, is made of power supply, spinning appts and receiver, power for 500 ~ 2000W, maximum output voltage are 20 ~ 50kV；The receiver is one kind in drum-type, frame-type, separate type, thin butterfly or water-bath type；The spinning nozzle quantity of the spinning appts is 50 ~ 200, and internal diameter is 0.8 ~ 1.2mm.
- A kind of 5. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute During stating electrostatic spinning, the spacing between spinning nozzle and receiver is arranged to 10 ~ 20cm, and electric field strength is 20 ~ 30kV.
- A kind of 6. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute The mass ratio for stating cellulose composite filament and glass fibre is 2:1~3:1.
- A kind of 7. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute State braider and use Horizontal weave machine or vertical braider, power of motor is 3.8 ~ 6kW.
- A kind of 8. method using zeroth order Nanoscale Iron original position continuous repair soil according to claim 1, it is characterised in that：Institute The grid configuration for stating reduction sieve is diamond shape, grid aperture 1-3mm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002994A (en) * | 2019-05-05 | 2019-07-12 | 河北科技大学 | A kind of eutectic ionic liquid and its preparation method and application |
| CN110076192A (en) * | 2019-05-31 | 2019-08-02 | 华南理工大学 | A kind of in-situ remediation method of heavy-metal contaminated soil |
| CN110314655A (en) * | 2019-06-03 | 2019-10-11 | 武汉工程大学 | A kind of bagasse load zeroth order iron adsorbent and its preparation method and application |
| CN110814013A (en) * | 2019-11-22 | 2020-02-21 | 浙江大学 | Method for simultaneously producing and repairing organic contaminated paddy farmland soil |
| CN115029811A (en) * | 2022-06-01 | 2022-09-09 | 西北工业大学 | Denitrification denitrification slow-release electron donor material and preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19608818A1 (en) * | 1996-03-07 | 1997-09-18 | Franz Dietrich Dipl Ing Oeste | Funnel and gate subsoil contamination barrier |
| CN102601104A (en) * | 2012-03-09 | 2012-07-25 | 珠海国佳高分子新材料有限公司 | Embattling treatment method of environment polluted by toxic heavy metals, inorganic matters and organic matters |
| CN104307858A (en) * | 2014-10-30 | 2015-01-28 | 南京农业大学 | Ecological bag for in situ curing and removing of soil heavy mental and application method |
| CN104389110A (en) * | 2014-10-24 | 2015-03-04 | 中国人民大学 | Polyelectrolyte fiber felt embedded with zero-valence nano iron and preparation method thereof |
| CN105880269A (en) * | 2016-06-27 | 2016-08-24 | 安徽金联地矿科技有限公司 | Framework device and remediation method applicable to soil remediation |
| CN106000480A (en) * | 2016-05-24 | 2016-10-12 | 马鞍山中创环保科技有限公司 | Ion exchange fiber used for soil restoration, and preparation method thereof |
| CN106111691A (en) * | 2016-06-27 | 2016-11-16 | 安徽金联地矿科技有限公司 | A kind of soil remediation adsorption net and restorative procedure thereof |
| CN107309256A (en) * | 2017-07-11 | 2017-11-03 | 浙江明境环保科技有限公司 | A kind of heavy metal polluted soil processing system and technique |
-
2017
- 2017-11-23 CN CN201711177537.5A patent/CN107931322B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19608818A1 (en) * | 1996-03-07 | 1997-09-18 | Franz Dietrich Dipl Ing Oeste | Funnel and gate subsoil contamination barrier |
| CN102601104A (en) * | 2012-03-09 | 2012-07-25 | 珠海国佳高分子新材料有限公司 | Embattling treatment method of environment polluted by toxic heavy metals, inorganic matters and organic matters |
| CN104389110A (en) * | 2014-10-24 | 2015-03-04 | 中国人民大学 | Polyelectrolyte fiber felt embedded with zero-valence nano iron and preparation method thereof |
| CN104307858A (en) * | 2014-10-30 | 2015-01-28 | 南京农业大学 | Ecological bag for in situ curing and removing of soil heavy mental and application method |
| CN106000480A (en) * | 2016-05-24 | 2016-10-12 | 马鞍山中创环保科技有限公司 | Ion exchange fiber used for soil restoration, and preparation method thereof |
| CN105880269A (en) * | 2016-06-27 | 2016-08-24 | 安徽金联地矿科技有限公司 | Framework device and remediation method applicable to soil remediation |
| CN106111691A (en) * | 2016-06-27 | 2016-11-16 | 安徽金联地矿科技有限公司 | A kind of soil remediation adsorption net and restorative procedure thereof |
| CN107309256A (en) * | 2017-07-11 | 2017-11-03 | 浙江明境环保科技有限公司 | A kind of heavy metal polluted soil processing system and technique |
Non-Patent Citations (2)
| Title |
|---|
| P.GANESAN等: "纤维素静电纺丝及其难题", 《国际纺织导报》 * |
| 闵伶俐等: "铁氧化物_壳聚糖复合纳米纤维的制备及吸附五价砷研究", 《环境科学学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002994A (en) * | 2019-05-05 | 2019-07-12 | 河北科技大学 | A kind of eutectic ionic liquid and its preparation method and application |
| CN110002994B (en) * | 2019-05-05 | 2021-07-30 | 河北科技大学 | Eutectic ionic liquid and preparation method and application thereof |
| CN110076192A (en) * | 2019-05-31 | 2019-08-02 | 华南理工大学 | A kind of in-situ remediation method of heavy-metal contaminated soil |
| CN110076192B (en) * | 2019-05-31 | 2022-02-15 | 华南理工大学 | In-situ remediation method for heavy metal contaminated soil |
| CN110314655A (en) * | 2019-06-03 | 2019-10-11 | 武汉工程大学 | A kind of bagasse load zeroth order iron adsorbent and its preparation method and application |
| CN110314655B (en) * | 2019-06-03 | 2022-05-10 | 武汉工程大学 | Bagasse-loaded zero-valent iron adsorbent and preparation method and application thereof |
| CN110814013A (en) * | 2019-11-22 | 2020-02-21 | 浙江大学 | Method for simultaneously producing and repairing organic contaminated paddy farmland soil |
| CN115029811A (en) * | 2022-06-01 | 2022-09-09 | 西北工业大学 | Denitrification denitrification slow-release electron donor material and preparation method and application thereof |
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