CN109570210A - A method of soil metallic pollution is administered using nano-porous materials - Google Patents
A method of soil metallic pollution is administered using nano-porous materials Download PDFInfo
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- CN109570210A CN109570210A CN201811239288.2A CN201811239288A CN109570210A CN 109570210 A CN109570210 A CN 109570210A CN 201811239288 A CN201811239288 A CN 201811239288A CN 109570210 A CN109570210 A CN 109570210A
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- nano
- porous materials
- leacheate
- soil
- metallic pollution
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Classifications
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- 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
Abstract
The present invention relates to soil pollution processing technology fields, the present invention provides a kind of method for administering soil metallic pollution using nano-porous materials, include the following steps: 1) to elute: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and collects leacheate using extraction well；2) adsorb: KOH and nano-porous materials being added in Xiang Suoshu leacheate and carry out adsorption treatment, it is to be adsorbed reach balance after, filtering obtains filtrate and filter residue, and the filtrate may continue as leacheate in step 1) and reuse；3) it is desorbed: the acid solution of KCl and 0.01mol/L being added in Xiang Suoshu filter residue, oscillation high speed rotation carries out desorption processing, the nano-porous materials that obtain that treated.Soil leaching and nano-porous materials absorption heavy metal are combined and achieve the purpose that pollution administration soil by the present invention, nano-porous materials have the characteristics that large specific surface area and pore volume are big, have a large amount of active groups, have excellent absorption property to heavy metal lead, cadmium.
Description
Technical field
The present invention relates to soil pollution processing technology fields, administer soil using nano-porous materials more particularly to a kind of
The method of metallic pollution.
Background technique
Soil pollution refers to that the harm ingredient for including in soil is excessive and excessive, has been more than the purification energy of soil itself
Power, so as to cause the variation of soil physics and chemical structure, harmful components in plant absorption soil pass through soil-water-
Plant-human body route of transmission, endangers the health of the mankind.Its feature are as follows: 1, cumulative bad, polluter are difficult to expand in the soil
Migration is dissipated, is easily accumulated exceeded；2, irreversibility, contaminated by heavy metals soil need the 100-200 year that could restore；3,
Refractory reason, the Recalcitrant chemicals accumulated in the soil are difficult to eliminate by diluting and degrading.The unexpected pollution got worse,
The quality and quantity of growth and development of crop and products thereof is not only influenced, but also human health is influenced by food chain and is therefore controlled
It is very urgent to manage soil pollution.
Summary of the invention
In view of the foregoing deficiencies of prior art, it is controlled the purpose of the present invention is to provide a kind of using nano-porous materials
The method for managing soil metallic pollution, this can alleviate a soil huge sum of money using the method that nano-porous materials administer soil metallic pollution
Belong to crop toxic action, improves crop yield and quality.
In order to achieve the above objects and other related objects, the present invention provides a kind of golden using nano-porous materials improvement soil
The method for belonging to pollution, includes the following steps:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and receive using extraction well
Collect leacheate；
2) it adsorbs: KOH being added in Xiang Suoshu leacheate and nano-porous materials carry out adsorption treatment, it is to be adsorbed to reach balance
Afterwards, it filters, obtains filtrate and filter residue, the filtrate may continue as leacheate in step 1) and reuse；
3) it is desorbed: the acid solution of KCl and 0.01mol/L being added in Xiang Suoshu filter residue, oscillation high speed rotation is desorbed
Processing, the nano-porous materials that obtain that treated.The effect of KCl is to carry out ion exchange, to enable nano-porous materials
Enough reused
Preferably, the partial size of the nano-porous materials is 0.1-50 μm, Kong Rongwei 0.1-15ml/g, aperture 2-
50nm, porosity 40-80%.
Preferably, the nano-porous materials include carbon nanotube, active carbon fibre peacekeeping carbon molecular sieve any one or
It is a variety of.
It is highly preferred that the nano-porous materials are by active carbon fibre peacekeeping carbon molecular sieve according to weight ratio (4-7): (14-
17) it is composed.
Preferably, in step 2), the temperature of the adsorption treatment is 40-55 DEG C.
Preferably, in step 2), the weight ratio of weight and the leacheate that the KOH is added is 1-2kg/ tons.
Preferably, in step 2), the weight ratio of weight and the leacheate that the nano-porous materials are added is
5-40kg/ tons.
Preferably, in step 3), the high-speed rotating revolving speed of oscillation is 180-200rpm.
Preferably, in step 3), the acid solution is aqueous hydrochloric acid solution.
Preferably, in step 3), the weight ratio of the weight and the filter residue of adding the KCl is (0.1-0.8):
(3-8)。
Preferably, in step 3), the weight ratio of the volume and the filter residue of adding the acid solution is L:kg=
(1-15): (3-8).
In conclusion the present invention provides a kind of method for administering soil metallic pollution using nano-porous materials, the present invention
Have the beneficial effect that
Nano-porous materials are because having high-specific surface area, high porosity, regulatable aperture and surface property, in catalyst
The fields such as carrier, supercapacitor, catalyst and adsorbent, which have, to be widely applied.Object of this investigation is, by Soil leaching
It is combined with nano-porous materials absorption heavy metal and achievees the purpose that pollution administration soil.Nano-porous materials have specific surface area
Big and pore volume is big, has the characteristics that a large amount of active groups, has excellent absorption property to heavy metal lead, cadmium, meets novel
The environment-friendly type of material, functionality and economy it is inherently required.Nano-porous materials have improvement chiltern soil texture, improve it
Porosity and water holding fertilizer-preserving ability increase argillaceous soil permeability, delay fertilizer loss, improve utilization rate of fertilizer, meanwhile, nanometer
Porous material surface has a large amount of oxygen-containing functional groups, has compared with strongly hydrophilic and ion-exchange capacity, can reduce plant absorption
Heavy metal amount alleviates heavy metal-polluted soil to crop toxic action, improves crop yield and quality.
The present invention selects nano-porous materials as adsorbent, can not only reduce the content of heavy metal-polluted soil, simultaneously because
A large amount of oxygen-containing functional group is contained on nano-porous materials surface, has very strong hydrophily, thus has water holding fertilizer-preserving ability, ginseng
With plant cyclic metabolism, the utilization rate of fertilizer is improved.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.
Embodiment 1
A method of soil metallic pollution being administered using nano-porous materials, is included the following steps:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and receive using extraction well
Collect leacheate；
2) it adsorbs: KOH being added in Xiang Suoshu leacheate and carbon nanotube carries out adsorption treatment, the temperature of adsorption treatment is 50
DEG C, it is to be adsorbed reach balance after, filtering obtains filtrate and filter residue, and the filtrate may continue as leacheate in step 1) and repeat
It uses；Wherein, the weight ratio of weight and leacheate that KOH is added is 1.2kg/ tons, the feeding quantity and leacheate of carbon nanotube
Weight ratio be 20kg/ tons, the Kong Rongwei 2ml/g of carbon nanotube, aperture 10nm, porosity 50%.
After tested, carbon nanotube respectively reaches 10.25% and 14.76% to the adsorption rate of lead, cadmium.
3) it is desorbed: the aqueous hydrochloric acid solution of KCl and 0.01mol/L being added into filter residue, revolved at room temperature using oscillation high speed
The processing of capable desorption is rotated into, vibrating high-speed rotating revolving speed is 200rpm, the carbon nanotube that obtains that treated.Wherein, add KCl's
The weight ratio of weight and filter residue is 0.2:5；The weight ratio of the volume and filter residue of adding acid solution is L:kg=2:5.
Embodiment 2
A method of soil metallic pollution being administered using nano-porous materials, is included the following steps:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and receive using extraction well
Collect leacheate；
2) it adsorbs: KOH being added in Xiang Suoshu leacheate and activated carbon fibre carries out adsorption treatment, the temperature of adsorption treatment is
50 DEG C, it is to be adsorbed reach balance after, filtering, obtain filtrate and filter residue, the filtrate may continue as leacheate weight in step 1)
It is multiple to use；Wherein, the weight ratio of weight and leacheate that KOH is added is 1.4kg/ tons, the feeding quantity of the activated carbon fibre
Weight ratio with leacheate is 17kg/ tons, and the partial size of activated carbon fibre is 25 μm, and Kong Rongwei 5ml/g, aperture is
12nm, porosity 57%.
After tested, activated carbon fibre respectively reaches 12.14% and 15.78% to the adsorption rate of lead, cadmium.
3) it is desorbed: the aqueous hydrochloric acid solution of KCl and 0.01mol/L being added into filter residue, revolved at room temperature using oscillation high speed
The processing of capable desorption is rotated into, vibrating high-speed rotating revolving speed is 200rpm, the activated carbon fibre that obtains that treated.Wherein, KCl is added
Weight and filter residue weight ratio be 0.4:6；The weight ratio of the volume and filter residue of adding acid solution is L:kg=2.5:
6。
Embodiment 3
A method of soil metallic pollution being administered using nano-porous materials, is included the following steps:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and receive using extraction well
Collect leacheate；
2) it adsorbs: KOH being added into leacheate and carbon molecular sieve carries out adsorption treatment, the temperature of adsorption treatment is 50 DEG C,
It is to be adsorbed reach balance after, filtering obtains filtrate and filter residue, and the filtrate may continue as leacheate in step 1) and repeat to make
With；Wherein, the weight ratio of weight and leacheate that KOH is added is 1.4kg/ tons, the feeding quantity of carbon molecular sieve and leacheate
Weight ratio is 20kg/ tons, and the partial size of carbon molecular sieve is 20 μm, Kong Rongwei 2ml/g, aperture 10nm, and porosity is
50%.
After tested, carbon molecular sieve respectively reaches 12.75% and 16.87% to the adsorption rate of lead, cadmium.
3) it is desorbed: the aqueous hydrochloric acid solution of KCl and 0.01mol/L being added into filter residue, revolved at room temperature using oscillation high speed
The processing of capable desorption is rotated into, vibrating high-speed rotating revolving speed is 200rpm, the carbon molecular sieve that obtains that treated.Wherein, add KCl's
The weight ratio of weight and filter residue is 0.6:7；The weight ratio of the volume and filter residue of adding acid solution is L:kg=3.2:7.
Embodiment 4
A method of soil metallic pollution being administered using nano-porous materials, is included the following steps:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and receive using extraction well
Collect leacheate；
2) it adsorbs: KOH, active carbon fibre peacekeeping carbon molecular sieve progress adsorption treatment being added into leacheate, adsorption treatment
Temperature is 50 DEG C, it is to be adsorbed reach balance after, filtering obtains filtrate and filter residue, and the filtrate may continue as leaching in step 1)
Washing lotion is reused；Wherein, the weight ratio of weight and leacheate that KOH is added is 1.4kg/ tons, the charging of activated carbon fibre
The weight ratio of amount and leacheate is 6kg/ tons, and the partial size of activated carbon fibre is 30 μm, and Kong Rongwei 7ml/g, aperture is
15nm, porosity 59%；The feeding quantity of carbon molecular sieve and the weight ratio of leacheate are 15kg/ tons, the grain of carbon molecular sieve
Diameter is 20 μm, Kong Rongwei 2ml/g, aperture 10nm, porosity 50%.
After tested, carbon molecular sieve respectively reaches 18.79% and 17.48% to the adsorption rate of lead, cadmium.
3) it is desorbed: the aqueous hydrochloric acid solution of KCl and 0.01mol/L being added into filter residue, revolved at room temperature using oscillation high speed
The processing of capable desorption is rotated into, vibrating high-speed rotating revolving speed is 200rpm, the carbon molecular sieve that obtains that treated.Wherein, add KCl's
The weight ratio of weight and filter residue is 0.7:7；The weight ratio of the volume and filter residue of adding acid solution is L:kg=3.5:7.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of method for administering soil metallic pollution using nano-porous materials, which comprises the steps of:
1) it elutes: using water as leacheate, contaminated soil is flowed through under the action of gravity or external force, and collect leaching using extraction well
Washing lotion；
2) adsorb: KOH and nano-porous materials being added in Xiang Suoshu leacheate and carry out adsorption treatment, it is to be adsorbed reach balance after,
Filtering, obtains filtrate and filter residue, and the filtrate may continue as leacheate in step 1) and reuse；
3) it being desorbed: the acid solution of KCl and 0.01mol/L being added in Xiang Suoshu filter residue, oscillation high speed rotation carries out desorption processing,
The nano-porous materials that obtain that treated.
2. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that described
The partial size of nano-porous materials is 0.1-50 μm, Kong Rongwei 0.1-15ml/g, aperture 2-50nm, porosity 40-
80%.
3. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that described
Nano-porous materials include any one or more of carbon nanotube, active carbon fibre peacekeeping carbon molecular sieve.
4. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 2) in, the temperature of the adsorption treatment is 40-55 DEG C.
5. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 2) in, be added the KOH weight and the leacheate weight ratio be 1-2kg/ tons.
6. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 2) in, be added the nano-porous materials weight and the leacheate weight ratio be 5-40kg/ tons.
7. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 3) in, the high-speed rotating revolving speed of the oscillation is 180-200rpm.
8. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 3) in, the acid solution be aqueous hydrochloric acid solution.
9. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that in step
It is rapid 3) in, add the KCl weight and the filter residue weight ratio be (0.1-0.8): (3-8).
10. the method for administering soil metallic pollution using nano-porous materials as described in claim 1, which is characterized in that
In step 3), the weight ratio of the volume and the filter residue of adding the acid solution is L:kg=(1-15): (3-8).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957734A (en) * | 2020-07-03 | 2020-11-20 | 广东省生态环境技术研究所 | Method for in-situ remediation of soil heavy metal pollution |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201848424U (en) * | 2010-11-11 | 2011-06-01 | 南京市环境保护科学研究院 | Contaminated soil leaching remediation equipment |
| CN103272562A (en) * | 2013-06-19 | 2013-09-04 | 福州大学 | Preparation method of filter material base activated carbon fiber |
| CN105618472A (en) * | 2015-12-22 | 2016-06-01 | 湖南森美思环保有限责任公司 | Method for removing effective-state heavy metal in heavy metal contaminated soil permanently |
| CN105728450A (en) * | 2016-05-05 | 2016-07-06 | 四川农业大学 | Method for removing lead, zinc and cadmium in soil by increasing low-molecular organic acids by virtue of nano materials |
| CN106269829A (en) * | 2016-10-28 | 2017-01-04 | 环境保护部华南环境科学研究所 | A kind of wide suitable efficient lossless in-situ immobilization is by the method in heavy metal pollution farmland |
| CN106345433A (en) * | 2016-09-18 | 2017-01-25 | 天津北洋百川生物技术有限公司 | Elution-adsorption repair method for hexavalent chromium contaminated soil |
| CN206980741U (en) * | 2017-07-11 | 2018-02-09 | 长沙环境保护职业技术学院 | Adsorb the functional nanomaterials of heavy metal |
-
2018
- 2018-10-23 CN CN201811239288.2A patent/CN109570210A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201848424U (en) * | 2010-11-11 | 2011-06-01 | 南京市环境保护科学研究院 | Contaminated soil leaching remediation equipment |
| CN103272562A (en) * | 2013-06-19 | 2013-09-04 | 福州大学 | Preparation method of filter material base activated carbon fiber |
| CN105618472A (en) * | 2015-12-22 | 2016-06-01 | 湖南森美思环保有限责任公司 | Method for removing effective-state heavy metal in heavy metal contaminated soil permanently |
| CN105728450A (en) * | 2016-05-05 | 2016-07-06 | 四川农业大学 | Method for removing lead, zinc and cadmium in soil by increasing low-molecular organic acids by virtue of nano materials |
| CN106345433A (en) * | 2016-09-18 | 2017-01-25 | 天津北洋百川生物技术有限公司 | Elution-adsorption repair method for hexavalent chromium contaminated soil |
| CN106269829A (en) * | 2016-10-28 | 2017-01-04 | 环境保护部华南环境科学研究所 | A kind of wide suitable efficient lossless in-situ immobilization is by the method in heavy metal pollution farmland |
| CN206980741U (en) * | 2017-07-11 | 2018-02-09 | 长沙环境保护职业技术学院 | Adsorb the functional nanomaterials of heavy metal |
Non-Patent Citations (2)
| Title |
|---|
| 冯权莉等: "《微波-活性炭纤维处理有机废气》", 30 June 2017, 北京冶金工业出版社 * |
| 汪多仁等: "《绿色净水处理剂》", 30 November 2006, 科学技术文献出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957734A (en) * | 2020-07-03 | 2020-11-20 | 广东省生态环境技术研究所 | Method for in-situ remediation of soil heavy metal pollution |
| CN111957734B (en) * | 2020-07-03 | 2022-04-15 | 广东省生态环境技术研究所 | Method for in-situ remediation of soil heavy metal pollution |
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Application publication date: 20190405 |