CN108485670A - A kind of nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil - Google Patents
A kind of nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil Download PDFInfo
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- CN108485670A CN108485670A CN201810201322.0A CN201810201322A CN108485670A CN 108485670 A CN108485670 A CN 108485670A CN 201810201322 A CN201810201322 A CN 201810201322A CN 108485670 A CN108485670 A CN 108485670A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01J20/02—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
- B01J20/14—Diatomaceous earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
Abstract
The invention discloses a kind of nano ecological renovation agent and its to the renovation technique of heavy-metal contaminated soil, include the preparation of nano zero valence iron and restoration of the ecosystem agent；Processing step：135.25 grams of iron chloride containing six crystallizations water are weighed to be dissolved in 500 milliliters of distilled water；Under nitrogen protection, 30.26 grams of sodium borohydride solids of weighing are slowly added into above-mentioned solution, centrifuge 5 minutes, acetone is then used to replace distillation water washing；It is dried to obtain nano zero-valence iron powder under vacuum；3.5 grams of nano zero valence irons, 3.7 grams of polymer aluminas, 1.45 grams of diatomite, 0.9 gram of calper calcium peroxide and 0.45 gram of sodium citrate are weighed respectively, are sufficiently mixed the above-mentioned raw material claimed to obtain restoration of the ecosystem agent under nitrogen protection.This nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil, restoration of the ecosystem agent obtained is applied widely, and operating condition is good, and processing capacity is big, and the rate of adsorption is soon and adsorption capacity is high, therefore has good application prospect, is worth a large amount of popularization.
Description
Technical field
The present invention relates to remediation of heavy metal-contaminated soil field, specially a kind of nano ecological renovation agent and its counterweight
The renovation technique of metallic pollution soil.
Background technology
As industrial or agricultural quickly develops, the especially industries such as mining, plating, leather and dyestuff are largely useless containing heavy metal
The discharge of water causes soil pollution.Accumulation of heavy metals in soil does not only result in the degeneration of soil, agricultural product production to a certain extent
The reduction of amount and quality, and jeopardize human health by approach such as surface water and quantities of goods produced.Moreover, heavy metal is in soil pollution
There is the features such as irreversibility, chronicity and concealment, therefore the heat that the improvement of soil pollution is always studied at present in the process
Point and difficult point.There is physical chemistry technology (Soil leaching, chemosetting, electrochemical rehabilitation) to the restorative procedure of contaminated soil at present
With phytoremediation (plant stability, plant extract).However, physical-chemical process processing cost is high, it is possible to cause soil texture broken
Ring, biological activity of soil declines and soil is arduously degenerated, and the period of phytoremediation is long, and remediation efficiency is low, and is not easy machinery
Change operation.Currently, the various in-situ immobilizations for containing nano zero valence iron as a kind of efficient, emerging method also by scientific circles and
Some authorized by state and selection, and commercialization is gradually moved towards, but the technology is at present also in pilot scale and demonstration phase, it is also necessary to soil
The multi-disciplinary joint efforts such as earth, chemistry, environmental protection and biology could be realized.
Invention content
The purpose of the present invention is to provide a kind of nano ecological renovation agent and its to the renovation technique of heavy-metal contaminated soil,
Restoration of the ecosystem agent is applied widely, and operating condition is good, and processing capacity is big, and the rate of adsorption is fast and adsorption capacity is high, above-mentioned to solve
The problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：A kind of nano ecological renovation agent, preparation method
Step includes：
The first step：The preparation of nano zero valence iron is carried out first；
Second step：Then the preparation of restoration of the ecosystem agent is carried out.
The present invention provides another technical solution：A kind of reparation work of nano ecological renovation agent to heavy-metal contaminated soil
Skill includes the following steps：
The first step：It weighs 135.25 grams of iron chloride containing six crystallizations water to be dissolved in 500 milliliters of distilled water, then exist
It is sufficiently mixed the oxygen excluded in aqueous solution under logical condition of nitrogen gas；
Second step：Under nitrogen protection, 30.26 grams of sodium borohydride solids of weighing are slowly added into above-mentioned solution,
It is reacted 20 minutes under the conditions of being stirred continuously；
Third walks：Then it is centrifuged at 8000rpm 5 minutes, acetone is then used to replace distillation water washing；
4th step：It is dried to obtain nano zero-valence iron powder under vacuum；
5th step：Weighed respectively according to Material Percentage 3.5 grams of nano zero valence irons, 3.7 grams of polymer aluminas, 1.45 grams
Diatomite, 0.9 gram of calper calcium peroxide and 0.45 gram of sodium citrate；
6th step：It finally is sufficiently mixed the above-mentioned raw material claimed to obtain novel composite ecological under nitrogen protection and repair
Multiple agent.
Preferably, washing times are no less than 3 times in step 3.
Compared with prior art, the beneficial effects of the invention are as follows：
This nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil, not for the combination of different pollution types
With the compound renovation agent of content, main component-nano zero valence iron in this restoration of the ecosystem agent is prepared first, is then received with use
Restoration of the ecosystem agent made of rice Zero-valent Iron, polymer alumina, diatomite, calper calcium peroxide and sodium citrate is sufficiently mixed to obtain one kind
The ecological adsorbent of high absorption property, and this restoration of the ecosystem agent is applied widely, and operating condition is good, and processing capacity is big, inhales
Attached rate is fast and adsorption capacity is high, therefore has good application prospect, is worth a large amount of and promotes.
Description of the drawings
Fig. 1 is the infrared spectrum that the hydrolysate of the aluminium polychloride of the present invention repairs heavy-metal contaminated soil
Figure.
Specific implementation mode
The embodiment of the present invention is will be detailed below, however, the embodiment of the present invention is not limited thereto.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
A kind of the step of nano ecological renovation agent, preparation method includes：
The first step：The preparation of nano zero valence iron is carried out first, and sodium borohydride reduction ferric ion obtains under a nitrogen atmosphere
To nano zero valence iron, nano zero valence iron not only has good adsorption effect, but also the heavy metal to appraising at the current rate to each heavy metal species
With redox, there is degradation to organic pollution；
Second step：Then the preparation of restoration of the ecosystem agent is carried out, restoration of the ecosystem agent is applied widely, and operating condition is good, processing
Ability is big, and the rate of adsorption is fast and adsorption capacity is high, therefore has good application prospect, is worth a large amount of and promotes.
A kind of nano ecological renovation agent includes the following steps the renovation technique of heavy-metal contaminated soil：
The first step：It weighs 135.25 grams of iron chloride containing six crystallizations water to be dissolved in 500 milliliters of distilled water, then exist
It is sufficiently mixed the oxygen excluded in aqueous solution under logical condition of nitrogen gas；
Second step：Under nitrogen protection, 30.26 grams of sodium borohydride solids of weighing are slowly added into above-mentioned solution,
It is reacted 20 minutes under the conditions of being stirred continuously；
Third walks：Then it is centrifuged at 8000rpm 5 minutes, then uses acetone that distillation water washing is replaced to be no less than 3
It is secondary；
4th step：It is dried to obtain nano zero-valence iron powder under vacuum；
5th step：Weighed respectively according to Material Percentage 3.5 grams of nano zero valence irons, 3.7 grams of polymer aluminas, 1.45 grams
Diatomite, 0.9 gram of calper calcium peroxide and 0.45 gram of sodium citrate；
6th step：It finally is sufficiently mixed the above-mentioned raw material claimed to obtain novel composite ecological under nitrogen protection and repair
Multiple agent.
Reaction process and the mechanism of action：Restoration of the ecosystem agent is hydrolyzed, aluminium polychloride is a kind of inorganic polymer wadding
Agent is coagulated, occurs with electrochemistry in aluminium polychloride hydrolytic process, there is stronger absorption and cohesion, therefore to heavy metal
With strong charge neutrality effect, excellent bridge formation suction-operated of the hydrolysate to pollutant, nano zero valence iron is not only in component
There is good adsorption effect to each heavy metal species, and the heavy metal to appraising at the current rate has redox, to organic contamination
Object have degradation, since accounting is larger in nano ecological renovation agent for aluminium polychloride, thus its absorption and cohesion and
Charge neutrality ability is stronger；
The hydrolysate of aluminium polychloride repairs heavy-metal contaminated soil, and infrared spectrogram is attached referring to specification
Fig. 1.
For the pollution type of different heavy metals, each component of nano ecological renovation agent is varied from, hundred shared by each component
Divide than making corresponding adjustment.
In summary：This nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil, the present invention is not for
The compound renovation agent that different content is combined with pollution type, prepares main component-nanometer zero in this restoration of the ecosystem agent first
Valence iron, then with using restoration of the ecosystem made of nano zero valence iron, polymer alumina, diatomite, calper calcium peroxide and sodium citrate
Agent is sufficiently mixed to obtain a kind of ecological adsorbent of high absorption property, and this restoration of the ecosystem agent is applied widely, operates item
Part is good, and processing capacity is big, and the rate of adsorption is fast and adsorption capacity is high, therefore has good application prospect, is worth a large amount of and promotes.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of nano ecological renovation agent, which is characterized in that the step of preparation method includes：
The first step：The preparation of nano zero valence iron is carried out first；
Second step：Then the preparation of restoration of the ecosystem agent is carried out.
2. a kind of nano ecological renovation agent as described in claim 1 and its renovation technique to heavy-metal contaminated soil, special
Sign is that processing step is as follows：
The first step：It weighs 135.25 grams of iron chloride containing six crystallizations water to be dissolved in 500 milliliters of distilled water, then in logical nitrogen
The oxygen excluded in aqueous solution is sufficiently mixed under the conditions of gas；
Second step：Under nitrogen protection, 30.26 grams of sodium borohydride solids of weighing are slowly added into above-mentioned solution, continuous
It is reacted 20 minutes under stirring condition；
Third walks：Then it is centrifuged at 8000rpm 5 minutes, acetone is then used to replace distillation water washing；
4th step：It is dried to obtain nano zero-valence iron powder under vacuum；
5th step：Weigh 3.5 grams of nano zero valence irons, 3.7 grams of polymer aluminas, 1.45 grams of diatoms respectively according to Material Percentage
Soil, 0.9 gram of calper calcium peroxide and 0.45 gram of sodium citrate；
6th step：Finally the above-mentioned raw material claimed is sufficiently mixed under nitrogen protection to obtain novel composite ecological reparation
Agent.
3. a kind of nano ecological renovation agent as described in claim 1 and its renovation technique to heavy-metal contaminated soil, special
Sign is that washing times are no less than 3 times in step 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201322.0A CN108485670A (en) | 2018-03-12 | 2018-03-12 | A kind of nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810201322.0A CN108485670A (en) | 2018-03-12 | 2018-03-12 | A kind of nano ecological renovation agent and its renovation technique to heavy-metal contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111778035A (en) * | 2020-07-07 | 2020-10-16 | 广东大能新材科技有限公司 | Soil remediation agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583440A (en) * | 2016-12-22 | 2017-04-26 | 常州大学 | Method for synergistically remediating soil contaminated by organo-chlorine pesticide through nanoscale zero-valent iron/calcium peroxide |
| CN107674682A (en) * | 2017-09-13 | 2018-02-09 | 铜陵市业永兴工贸有限责任公司 | A kind of copper mine soil-repairing agent and preparation method thereof |
-
2018
- 2018-03-12 CN CN201810201322.0A patent/CN108485670A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583440A (en) * | 2016-12-22 | 2017-04-26 | 常州大学 | Method for synergistically remediating soil contaminated by organo-chlorine pesticide through nanoscale zero-valent iron/calcium peroxide |
| CN107674682A (en) * | 2017-09-13 | 2018-02-09 | 铜陵市业永兴工贸有限责任公司 | A kind of copper mine soil-repairing agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111778035A (en) * | 2020-07-07 | 2020-10-16 | 广东大能新材科技有限公司 | Soil remediation agent and preparation method thereof |
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Application publication date: 20180904 |