CN107812508A - For removing the expansion type palygorskite adsorbing material and preparation method of pollutant in soil - Google Patents
For removing the expansion type palygorskite adsorbing material and preparation method of pollutant in soil Download PDFInfo
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28064—Surface area, e.g. B.E.T specific surface area being in the range 500-1000 m2/g
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/305—Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores
- B01J20/3064—Addition of pore forming agents, e.g. pore inducing or porogenic agents
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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Abstract
The invention provides a kind of palygorskite adsorbing material that can remove heavy metal in soil, organophosphor, organochlorine pollutant, it is after water and yeast powder fermentation are added after palygorskite is crushed, it is placed in pug mill, add waterglass, hydrogen peroxide and calcium bicarbonate, extruding pelletization after well mixed, dry, obtain palygorskite particle；By palygorskite particle after 200 DEG C ~ 400 DEG C calcinings, soaked 1 ~ 2 day in citric acid solution；Again in 200 ~ 400 DEG C of secondary clacinings, soaked 10 ~ 24 hours in the ethanol solution containing silane coupler, dry, produce palygorskite adsorbing material.By in Baiyin cadmium ion serious pollution, the farmland experiment of organophosphor and organochlorine slight pollution, to the removal rate of cadmium ion 60% ~ 80%；To the removal rate 15 ~ 30% of organophosphor；To the removal rate of organochlorine 15 ~ 30%.Administered by Soil tillage three times, cadmium ion substantially eliminates.
Description
Technical field
The present invention relates to a kind of adsorbent for enough removing pollutant in soil, more particularly to one kind can remove a huge sum of money in soil
Belong to the expansion type palygorskite base adsorbent and preparation method of the pollutants such as ion, organophosphor, organochlorine, belong to composite
Field and remediation contaminated soil field.
Background technology
" raw in all things on earth soil, having soil, this has grain ", bread is the staff of life, including the food that human survival relies on, such as various grains,
Vegetables, vegetable oil；Chinese medicine used in the outstanding wisdom traditional Chinese medical science of our Chinese name races etc., soil will be come from.We eat
Various meats, birds, beasts and eggs and dairy produce basically also come from the various crops grown in soil.Various plants are from soil
Nutrition is drawn in earth, the nutrition being changed into required for the mankind and animal.But if soil is not clean, plant equally can be by these
Harmful material absorbing, travel further into the food that we eat, serious influence is caused to food security.
Research shows that mainly there is the following aspects in the source of soil pollution：
1st, the pollution introduced in agricultural production process.IncludingPeasant uses plastic sheeting（Mulch film, general film）, cause plastics system
Product are retained in soil, and this kind of plastic products can discharge its a large amount of plasticizer-phthalic acid ester contained, these organic additives
Can heavy damage ecological environment.The serious pollution brought using high toxicity agricultural chemicals.China is currently second largest agricultural chemicals in the world
Producing country, annual Pesticide use amount have exceeded 250,000 tons, comprising insecticide, herbicide, plant growth substance etc., and due to anti-
The increase of the property of medicine, annual peasant are excess using the amount of agricultural chemicals.Although agricultural chemicals has played important in agricultural guarantor's production volume increase
Effect, but the unreasonable soil contamination problem using caused by agricultural chemicals becomes increasingly conspicuous, and the national agricultural land soil by pollution by pesticides is
Up to 9,330,000 hm2。Largely use chemical fertilizer.Pollution of the chemical fertilizer to soil has been primarily introduced into heavy metal ion, especially phosphate fertilizer
Contain substantial amounts of toxic heavy metal ion.Soil constitution deterioration and the change of Soil Microorganism largely can be caused using chemical fertilizer,
Have influence on the activation of heavy metal ion.Water source irrigated farmland containing pollutant.Contain large amount of organic and heavy metal ion
Waste water, behind irrigated farmland, the pollution of soil can be effectively caused.Cd, Hg, As, Ni, Pb, Cu, Zn etc. are in the most of farmland in the north
It is detected in region, some areas belong to intermediate pollution.
2nd, the pollution transportation that industrial production is brought is into farmland.In factories and miness area often it can be seen that what pile up like a mountain is various useless
Material, mine tailing, waste residue etc., once rainfall, rainwater can wash away these waste materials, and the heavy metal ion of dissolving can flow into farmland, river with water
Stream, causes the pollution to environment.Attacked as the Maonan Autonomous County of Huanjiang of Guangxi Zhuang Autonomous Region in 2001 meets with extra torrential rain, ring
3 Mineral Processing Enterprises Tailings Dam dam breaks of upper reaches, Luoyang town, big Anxiang, Si En towns 600hm2Farmland is by mine tailing and abandoned mine slag
Flood, crops Large Scale Death, arrived Second Year, plant that what crop does not grow in ground, not even a blade of grass grows in serious place.Soil
Test result to show, agricultural land soil acidity is excessive, and the element such as Pb, Zn, As is exceeded.Battery enterprise be to river and soil pollution most
Serious industrial products, including dry cell, battery and inorganic silicon solar cell.As China will produce compact battery about every year
140000000000000, in addition to 90,000,000,000,000 export, the substantial amounts of type battery flows to rural market, and people just throw away to rubbish after use
Rubbish case, it is impossible to normal recycling, the nuisance such as mercury, chromium, cadmium, zinc, manganese, nickel, iron, copper, lead, arsenic of high concentration contained therein
Matter, farmland is just continuously transferred to, and be constantly enriched with, crops are brought with serious harm.
3rd, the pollution of industrial dust and waste gas to soil.What this main steam power plant, food and drink and automobile largely discharged daily
Various flue gases, containing substantial amounts of heavy metal ion such as Hg, Pb, Cd, Zn etc. in these flue gases, the pollution of soil can be caused.At present,
Ministry of Land and Resources and Chinese Ministry of Environmental Protection have been noted that the seriousness of the problem, on May 28th, 2016,《Soil Pollution Control action meter
Draw》（Referred to as ten, soil）Printed and distributed by State Council, implemented from 28 days Mays in 2016.Chinese Ministry of Environmental Protection personage expression, remediation contaminated soil
Almost it is not yet turned on repairing market, based on this starting point, once soil remediation market space opening can be very big, much
More than the improvement of air and water.
Relative to air and water harnessing, the reparation of soil is an extremely complex and difficult engineering, it is important to lacks reality
In effectively administering method.In ten, soil, the strength depended on science and technology specially is proposed, promotes and administers with repairing industry development.
Service monitoring market is decontroled, encourages social framework to participate in the activities such as soil environment monitoring assessment.Promoted, accelerated by policy
The mature industry of the links such as kind mulching soil environmental survey, analysis test, risk assessment, improvement and recovery project design and construction
Chain, the rich leading enterprise of some comprehensive strengths is formed, cultivates a collection of vigorous medium-sized and small enterprises.Promote conditional area
Build industrialization demonstration base.Specification remediation contaminated soil and reparation working unit and personal management, establish and improve supervision mechanism,
By technological service ability is weak, the working unit name single pass-through credit information of enterprise publicity of horizontal low, the comprehensive credit difference of operation management
System is open to society." internet+" is played in remediation contaminated soil with repairing the effect in full industrial chain, promotes popular wound
Industry, millions of people innovation, most critical is exactly soil restoring technology here.The recovery technique of contaminated soil at present, including it is biological prosthetic,
Chemical remediation, Agro-ecology reparation and mechanical engineering reparation.Wherein chemical material is a kind of most effective method.It is and chemical
It is to use sorbing material to repair maximally effective method, and by the auxiliary of mechanical engineering reparation, is effectively completed to weight in soil
The improvement of metal and organic material contaminated soil.The practices well that absorption method most general at present administers soil is in soil is administered
Adsorbent is added, these adsorbents adsorb pollutant so that heavy metal ion, the organic pollution content drop of crops absorption
It is low, it is offline so as to reach state-set standard.Although soil pollution is administered on this method surface so that crop products matter
It is qualified to examine, but in the long run, this improvement takes out pollutant from soil, but the gradual mankind and the animal food of allowing
With.Therefore such method can only meet an urgent need, can not be from more solving soil contamination problem on this.
The content of the invention
It is an object of the invention to provide a kind of expansion type palygorskite base adsorption material for being used to remove pollutant in soil
The preparation method of material.
First, the preparation of expansion type palygorskite adsorbing material
The preparation method of expansion type palygorskite adsorbing material of the present invention, is comprised the following steps that：
（1）The fermentation of palygorskite：Palygorskite is crushed to 2 ~ 5 microns, distilled water and yeast powder are added, in pug mill
In continuously stir mixing 3 ~ 5 hours, in sealed environment, fermented 8 ~ 10 days at 30 ~ 40 DEG C.The addition of distilled water is slope thread
The 40% ~ 70% of stone clay quality.
（2）Mixing granulation：Fermented palygorskite is again placed in pug mill, adds waterglass, hydrogen peroxide, carbon
Sour hydrogen calcium, stir 20 ~ 40 minutes, extruding pelletization freeze-drying, obtain the palygorskite particle that particle diameter is 0.8 ~ 1.2 centimetre.
The addition of waterglass is the 5% ~ 10% of palygorskite butt quality；Waterglass has inorganic adhesive in early stage
Effect, the intensity of palygorskite particle can be increased after use, the later stage can improve clay through calcine technology, waterglass
The resistance to soaked property of grain.
The addition of hydrogen peroxide is the 10% ~ 15% of palygorskite butt quality；Hydrogen peroxide can kill palygorskite
Microorganism in ore deposit, scavenging material.More importantly hydrogen peroxide can effectively foam palygorskite, reduce palygorskite
The density of particle, increase specific surface area.
Calcium bicarbonate addition is the 5% ~ 10% of palygorskite butt quality；Calcium bicarbonate can be that soil supplements calcium member
Element, it is often more important that in calcination stage, the releasable carbon dioxide of calcium bicarbonate and water vapour, can effectively increase palygorskite
The specific surface area of clay particle, improve adsorption capacity.
（3）Calcining：First by palygorskite particle obtained above after 200 DEG C ~ 400 DEG C are calcined 3 ~ 5 hours, in lemon
Soaked 1 ~ 2 day in acid solution；Again in 200 ~ 400 DEG C of secondary clacinings 3 ~ 5 hours, then in the absolute ethyl alcohol containing silane coupler
Soaked 10 ~ 24 hours in solution, dry, produce palygorskite Quito function sorbing material.
The concentration of citric acid solution is 0.5 ~ 1 mol/L.The purpose soaked with citric acid solution is increase palygorskite
The specific surface area of particle, the self-contained metal ion of dissolution palygorskite, it can be so set more to carry negative electrical charge,
Improve adsorption capacity of the clay particle to polluted heavy metals ion.
In ethanol solution containing silane coupler, the concentration of silane coupler is 0.01 ~ 0.05 mol/L.With containing
There is silane coupler solution to soak clay particle, clay surface organic can be made, be so more beneficial for adsorbing organic pollution,
Realize multifunctional comprehensive adsorptivity of the adsorption particle to inorganic matter and organic matter.
2nd, the structure of expansion type palygorskite adsorbing material
1. XRD is characterized
Expansion type palygorskite base adsorption particle is crushed, tests its XRD powder diffraction, Fig. 1 expansion type palygorskite bases
Sorbing material XRD structural characterizations.By diffraction curve it will be seen that the structure of palygorskite rod crystalline substance is in modifying process
Do not change, the calcining heat for illustrating us is suitable, and the absorption property of the material comes from palygorskite.
2. palygorskite adsorption particle IR Characterization
Fig. 2 expansion type palygorskite adsorbing material infrared spectrograms.Figure it is seen that in 3734 cm-1The peak at place is
MgO-H stretching vibration absworption peak, 3398cm-1Locate as duct edge combination water, 1580cm-1Flexible shaken for the hydroxyl of hydrone
Dynamic absworption peak, 1026cm-1It is the characteristic absorption peak of palygorskite to locate as Si-OH stretching vibration absworption peaks, above absworption peak.
This turns out us after firing, does not destroy the structure of palygorskite.1451cm-1Locate the absworption peak for carbonate impurities,
The absworption peak is stronger, illustrates that the calcination process does not have the carbonate removed completely in palygorskite, or the carbon added in experiment
Hydrochlorate.
3. palygorskite adsorption particle surface topography
The microscopic appearance of expansion type palygorskite adsorbing material is characterized.Fig. 3 expansion type palygorskites base is inhaled
Enclosure material stereoscan photograph.As seen from Figure 3, the palygorskite adsorbing material surface that we prepare has a lot of micro-
Hole, it is about extremely important to the specific surface area for increasing sorbing material in 2 microns, these micropores, and reduce palygorskite and stick
The key of native sorbing material density.In a word, by morphology characterization we it is also predicted that the good adsorptivity of the material.
3rd, the performance of expansion type palygorskite adsorbing material
1st, physical property
Expansion type palygorskite adsorbing material is the particle of 0.8 ~ 1.2 centimetre of particle diameter, and its density is 0.53 ~ 0.65 g/
cm3, specific surface area is 500 ~ 800m2/g。
2nd, mechanical performance
Examination criteria using national standard to granular active carbon hardness, the palygorskite prepared to the present invention and absorption
The hardness of grain is tested, and specific method is：Using the change of weight, hardness power is expressed as a percentage, percentage is bigger,
Illustrate that hardness is higher.More precisely, hardness number refers to adsorption particle in RO-TAP instruments to the resistance of steel ball decay motion.
After charcoal contacted with steel ball, hardness number is calculated by using the weight of the absorbent powder on sieve.
The hardness number of adsorption particle is 98.5% ~ 99.7% in the present invention, the setting higher than country to granular active carbon,
It is fully able to the requirement of Reusability in competent practical operation.
3rd, absorption property
Application method：Heavy metal, containing organophosphor, organochlorine contamination farmland in, on surface, paving spills the foaming for preparing of the present invention
Type palygorskite particle, every mu of ground select to use according to the order of severity of pollution, and basic dosage is 5 ~ 15 kgs/acre.Afterwards
Watering immersion absorption, in farmland, delivery port filter screen collects the clay particle for having adsorbed pollutant.After being dried Deng soil, soil is turned over
Earth, said process is repeated, can be administered completely for general 3 ~ 5 times.
Pilot scale effect：By in Baiyin cadmium ion serious pollution, the farmland of organophosphor and organochlorine slight pollution is real
Test, to the removal rate of cadmium ion 60% ~ 80%, to the removal rate of organophosphor and organochlorine 15 ~ 30%.Turned over by soil three times
Plough and administer, cadmium ion is substantially achieved elimination.
In summary, the pollution-free adsorbent palygorskite of Nantural non-toxic is prepared into expansion type adsorption particle by this hair, should
Particle not only has good suction-operated, and can swim in the water surface, so as to by the pollutant removal in soil, reach
To the purpose of essential pollution administration soil.
Brief description of the drawings
Fig. 1 expansion type palygorskite adsorbing material XRD structural characterizations.
Fig. 2 expansion type palygorskite adsorbing material infrared spectrograms.
Fig. 3 expansion type palygorskite adsorbing material stereoscan photographs.
Embodiment
Below by preparation of the specific embodiment to expansion type palygorskite adsorbing material of the present invention and the heart can do into
One step explanation.
Embodiment 1
Palygorskite is crushed to 20 ~ 50 microns.A certain amount of palygorskite powder is weighed, adds its quality 40% oneself
Water, 0.5% commercially available yeast powder, mixing 3 hours is continuously stirred in pug mill.It is sealed against preserving afterwards, in 30 DEG C of fermentations
10 days, it is again placed in afterwards in pug mill, adds waterglass（The 5% of clay butt quality）, commercially available hydrogen peroxide（Clay is done
The 10% of matrix amount）, calcium bicarbonate（The 5% of clay butt quality）, stir 20 minutes afterwards, extruding pelletization, particle diameter is 0.8 ~ 1.2
Between centimetre, freeze-drying.After being completely dried, it is placed in calcining furnace and is calcined 5 hours at 200 DEG C.After calcining
Particle is placed in citric acid solution（0.5 mol/L）In, soak 2 days, calcined 5 hours at 200 DEG C again.By the glutinous of secondary clacining
Soil particle is placed in the ethanol solution containing silane coupler（0.01mol/L）Immersion 24 hours, is dried under reduced pressure, directly afterwards
Untill ethanol is removed completely, expansion type thread stone clay adsorbing material is obtained.
Pilot scale effect：By in Baiyin cadmium ion serious pollution, the farmland of organophosphor and organochlorine slight pollution is real
Test, to the removal rate of cadmium ion 60% ~ 80%；To the removal rate 15 ~ 30% of organophosphor；To the removal rate of organochlorine 15 ~ 30%.
Administered by Soil tillage three times, cadmium ion is substantially achieved elimination.
Embodiment 2
Palygorskite is crushed to 20 ~ 50 microns.A certain amount of palygorskite powder is weighed, adds its quality 55% oneself
Water, 0.8% commercially available yeast powder, mixing 4 hours is continuously stirred in pug mill, is sealed against preserving afterwards, in 35 DEG C of fermentations
9 days, it is again placed in afterwards in pug mill, adds waterglass（The 7% of clay butt quality）, commercially available hydrogen peroxide（Clay butt
The 12% of quality）, calcium bicarbonate（The 8% of clay butt quality）, stir 30 minutes afterwards, extruding pelletization, particle diameter is at 0.8 ~ 1.2 li
Between rice, freeze-drying.After being completely dried, it is placed in calcining furnace and is calcined 4 hours at 300 DEG C.By after calcining
Grain is placed in citric acid solution（1mol/L）In, soak 1.5 days, calcined 4 hours at 300 DEG C again.By the clay of secondary clacining
Particle is placed in the ethanol solution containing silane coupler（0.05 mol/L）Immersion 18 hours, is dried under reduced pressure, directly afterwards
Untill ethanol is removed completely, expansion type thread stone clay adsorbing material is obtained.
Pilot scale effect：By in Baiyin cadmium ion serious pollution, the farmland of organophosphor and organochlorine slight pollution is real
Test, to the removal rate of cadmium ion 60% ~ 80%；To the removal rate 15 ~ 30% of organophosphor；To the removal rate of organochlorine 15 ~ 30%.
Administered by Soil tillage three times, cadmium ion is substantially achieved elimination.
Embodiment 3
Palygorskite is crushed to 20 ~ 50 microns.A certain amount of palygorskite powder is weighed, adds its quality 70% oneself
Water, 1% commercially available yeast powder, mixing 5 hours is continuously stirred in pug mill, is sealed against preserving afterwards, in 40 DEG C of fermentations 8
My god, it is again placed in afterwards in pug mill, adds waterglass（The 10% of clay butt quality）, commercially available hydrogen peroxide（Clay butt
The 15% of quality）, calcium bicarbonate（The 10% of clay butt quality）, stir 40 minutes afterwards, extruding pelletization, particle diameter is 0.8 ~ 1.2
Between centimetre, freeze-drying.After being completely dried, it is placed in calcining furnace and is calcined 3 hours at 400 DEG C.After calcining
Particle is placed in citric acid solution（0.8mol/L）In, soak 1 day, calcined 3 hours at 400 DEG C again.By the glutinous of secondary clacining
Soil particle is placed in the ethanol solution containing silane coupler（0.03mol/L）Immersion 24 hours, is dried under reduced pressure, directly afterwards
Untill ethanol is removed completely, expansion type thread stone clay adsorbing material is obtained.
Pilot scale effect：By in Baiyin cadmium ion serious pollution, the farmland of organophosphor and organochlorine slight pollution is real
Test, to the removal rate of cadmium ion 60% ~ 80%；To the removal rate 15 ~ 30% of organophosphor；To the removal rate of organochlorine 15 ~ 30%.
Administered by Soil tillage three times, cadmium ion is substantially achieved elimination.
Claims (8)
1. a kind of preparation method for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil, including it is following
Processing step：
（1）The fermentation of palygorskite：Palygorskite is crushed to 2 ~ 5 microns, distilled water and yeast powder are added, in pug mill
In continuously stir mixing 3 ~ 5 hours, then sealed fermenting 8 ~ 10 days at 30 ~ 40 DEG C；
（2）Mixing granulation：Fermented palygorskite is placed in pug mill, addition waterglass, hydrogen peroxide, calcium bicarbonate,
Stirring 20 ~ 40 minutes, extruding pelletization, freeze-drying, obtain palygorskite particle；
（3）Calcining：First by palygorskite particle 200 DEG C ~ 400 DEG C calcining 3 ~ 5 hours after, in citric acid solution soak 1 ~
2 days；Then in 200 ~ 400 DEG C of secondary clacinings 3 ~ 5 hours, 10 are then soaked in the ethanol solution containing silane coupler
~ 24 hours, dry, produce palygorskite Quito function sorbing material.
A kind of 2. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（1）In, the addition of distilled water is the 40% ~ 70% of palygorskite quality.
A kind of 3. system for being used to remove palygorskite Quito function sorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（2）In, the addition of waterglass is the 5% ~ 10% of palygorskite butt quality.
A kind of 4. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（2）In, the addition of hydrogen peroxide is the 10% ~ 15% of palygorskite butt quality.
A kind of 5. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（2）In, calcium bicarbonate addition is the 5% ~ 10% of palygorskite butt quality.
A kind of 6. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（2）In, the particle diameter of palygorskite particle is between 0.8 ~ 1.2 centimetre.
A kind of 7. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（3）In, the concentration of citric acid solution is 0.5 ~ 1mol/L.
A kind of 8. system for being used to remove the expansion type palygorskite adsorbing material of pollutant in soil as claimed in claim 1
Preparation Method, it is characterised in that：Step（3）In, in the ethanol solution containing silane coupler, the concentration of silane coupler is
0.01~0.05 mol/L。
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| CN201710990318.2A CN107812508B (en) | 2017-10-23 | 2017-10-23 | Foaming type palygorskite clay-based adsorption material for removing pollutants in soil and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279248A (en) * | 2008-05-16 | 2008-10-08 | 西北师范大学 | Modified paligorskite water purification agent and preparation thereof |
| CN102603028A (en) * | 2012-04-17 | 2012-07-25 | 西北师范大学 | Application of palygorskite clay serving as adsorbent in treatment of picric acid waste water |
| US20130023408A1 (en) * | 2009-12-07 | 2013-01-24 | Venkata Subba Rao Kambala | Amine modified clay sorbents |
| CN103663582A (en) * | 2014-01-02 | 2014-03-26 | 西北师范大学 | Nutrient slow-release type drinking water purifier and preparation method |
| CN104525123A (en) * | 2014-12-12 | 2015-04-22 | 格丰科技材料有限公司 | Porous composite material for removing heavy metals in soil and preparation method thereof |
| CN105985783A (en) * | 2016-02-24 | 2016-10-05 | 凤阳徽亨商贸有限公司 | Soil heavy metal restoration agent capable of enhancing organic carbon level |
| CN106116786A (en) * | 2016-06-16 | 2016-11-16 | 安徽乐农环保科技有限公司 | The preparation method that a kind of organic functions containing PAL biological restoration preparation is fertile |
-
2017
- 2017-10-23 CN CN201710990318.2A patent/CN107812508B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279248A (en) * | 2008-05-16 | 2008-10-08 | 西北师范大学 | Modified paligorskite water purification agent and preparation thereof |
| US20130023408A1 (en) * | 2009-12-07 | 2013-01-24 | Venkata Subba Rao Kambala | Amine modified clay sorbents |
| CN102603028A (en) * | 2012-04-17 | 2012-07-25 | 西北师范大学 | Application of palygorskite clay serving as adsorbent in treatment of picric acid waste water |
| CN103663582A (en) * | 2014-01-02 | 2014-03-26 | 西北师范大学 | Nutrient slow-release type drinking water purifier and preparation method |
| CN104525123A (en) * | 2014-12-12 | 2015-04-22 | 格丰科技材料有限公司 | Porous composite material for removing heavy metals in soil and preparation method thereof |
| CN105985783A (en) * | 2016-02-24 | 2016-10-05 | 凤阳徽亨商贸有限公司 | Soil heavy metal restoration agent capable of enhancing organic carbon level |
| CN106116786A (en) * | 2016-06-16 | 2016-11-16 | 安徽乐农环保科技有限公司 | The preparation method that a kind of organic functions containing PAL biological restoration preparation is fertile |
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