CN108690626A - A kind of novel ecological renovation agent and its production technology - Google Patents
A kind of novel ecological renovation agent and its production technology Download PDFInfo
- Publication number
- CN108690626A CN108690626A CN201810441131.1A CN201810441131A CN108690626A CN 108690626 A CN108690626 A CN 108690626A CN 201810441131 A CN201810441131 A CN 201810441131A CN 108690626 A CN108690626 A CN 108690626A
- Authority
- CN
- China
- Prior art keywords
- nano zero
- zero valence
- novel ecological
- valence iron
- renovation agent
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses a kind of production technologies of novel ecological renovation agent, include the following steps:The first step, the preparation of nano zero valence iron:Sodium borohydride is added in ferric aqueous solution under a nitrogen atmosphere and generates nano zero valence iron;It is prepared by the composite material of second step, nano zero valence iron and clay mineral.The present invention can solve the shortcomings of the prior art, and overall structure is secured, and function multipurpose uses, while toilet being suitble to use.
Description
Technical field
The present invention relates to it is a kind of for Heavy Metals in Contaminated Soils carry out in-situ immobilization novel ecological renovation agent and its
Production technology.
Background technology
Soil is is one of the main natural resources on which mankind depends, and leads to soil weight however as industrial or agricultural fast development
Metallic pollution getting worse.The land area station dirt by heavy metal pollution is found to the investigation of national irrigating region according to the Ministry of Agriculture of China
The 64.8% of water irrigated area area.Soil pollution has the characteristics that chronicity, concealment and irreversibility, therefore is repaiied to contaminated soil
Multiple is difficult.Currently, including peripheral doses (such as soil moved in improve the original, elution, soil removal and replacement and depth to heavy metal pollution of soil recovery technique
Plough soil etc.), chemical remediation (electronic, electric heating and modifying agent) and it is biological prosthetic (plant extract, phytovolatilization, plant stability and
Microorganism remediation).In numerous methods, the modifying agent in situ that adds passes through to the absorption of heavy metal, redox, antagonism and precipitation
Effect, to reduce the biological effectiveness of heavy metal.
The present invention is mixed with according to a certain percentage by nano zero valence iron and clay mineral both to be had with high absorption property
The restoration of the ecosystem agent of the quick reducing power of energy, and clay mineral is widely distributed, cheap, environmental-friendly, and the technique
It prepares simply, it is easy to spread.
Invention content
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of for Heavy Metals in Contaminated Soils
The production technology of the novel ecological renovation agent of in-situ immobilization is carried out, technique is prepared simply, easy to spread.
In order to solve the above technical problem, the present invention provides the following technical solutions:
A kind of production technology of novel ecological renovation agent, it is characterised in that:Include the following steps:
The first step, the preparation of nano zero valence iron:Sodium borohydride is added in ferric aqueous solution under a nitrogen atmosphere raw
At nano zero valence iron;
Nitrogen and it is being stirred continuously the lower 1.0mol/L iron chloride that sodium borohydride solids are added to 500mL first, then
It is reacting 1 hour under nitrogen protection;
Then use permanent magnet by Solid-Liquid Separation, washed using ethanol solution it is multiple, by obtained black solid into
Row freeze-drying is then stored in anaerobic drier;
It is prepared by the composite material of second step, nano zero valence iron and clay mineral:
First by above-mentioned nano zero valence iron and bentonite according to mass ratio 2:1 adequately mixing, is additionally added 10%-50%'s
Calcium oxide and ethylenediamine tetra-acetic acid obtain novel ecological renovation agent.
The present invention is done further preferably, the bentonite is the various clay minerals based on montmorillonite.
A kind of novel ecological renovation agent, it is characterised in that:Include following composition according to weight percent:
Nano zero valence iron:20-40%;
Bentonite:10-20%;
Calcium oxide:15-50%;
Ethylenediamine tetra-acetic acid:10-15%.
Compared with prior art, the advantageous effect of the invention reached is:
Nano zero valence iron not only has fine adsorptivity to Heavy Metals in Contaminated Soils in this restoration of the ecosystem agent of the present invention
Can, and there is fine redox property to the high valence elements such as Cr (VI) and As (V);Bentonite is to a various huge sum of moneys in key component
Belonging to all has absorption and ion-exchange performance well;Calcium oxide can not only readjust prices system pH, the hydroxyl and heavy metal of generation
Generate sediment;Ethylenediamine tetra-acetic acid has complexing to each heavy metal species, to reach to the heavy metal in contaminated soil
Effectively administer.
Description of the drawings
In the accompanying drawings:
Fig. 1 is scanning electron microscope schematic diagram of the present invention;
Fig. 2 is Zeta electromotive force schematic diagram of the present invention;
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figs. 1-2, the present invention relates to a kind of production technologies of novel ecological renovation agent, it is characterised in that:Including with
Lower step:
The first step, the preparation of nano zero valence iron:Sodium borohydride is added in ferric aqueous solution under a nitrogen atmosphere raw
At nano zero valence iron;
Nitrogen and it is being stirred continuously the lower 1.0mol/L iron chloride that sodium borohydride solids are added to 500mL first, then
It is reacting 1 hour under nitrogen protection;
Then use permanent magnet by Solid-Liquid Separation, washed using ethanol solution it is multiple, by obtained black solid into
Row freeze-drying is then stored in anaerobic drier;
It is prepared by the composite material of second step, nano zero valence iron and clay mineral:
First by above-mentioned nano zero valence iron and bentonite according to mass ratio 2:1 adequately mixing, it is 10%- to be additionally added total amount
50% calcium oxide and ethylenediamine tetra-acetic acid, obtains novel ecological renovation agent.
Heretofore described bentonite is the various clay minerals based on montmorillonite.
A kind of novel ecological renovation agent for carrying out in-situ immobilization to Heavy Metals in Contaminated Soils, it is characterised in that:It presses
Include following composition according to weight percent:
Nano zero valence iron:20-40%;
Bentonite:10-20%;
Calcium oxide:15-50%;
Ethylenediamine tetra-acetic acid:10-15%.
Finally it should be noted that:The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (3)
1. a kind of production technology of novel ecological renovation agent, it is characterised in that:Include the following steps:
The first step, the preparation of nano zero valence iron:Under a nitrogen atmosphere sodium borohydride is added to generate in ferric aqueous solution and be received
Rice Zero-valent Iron;
Nitrogen and be stirred continuously the lower 1.0mol/L iron chloride that sodium borohydride solids are added to 500mL first, then
It is reacted 1 hour under nitrogen protection;
Then it uses permanent magnet by Solid-Liquid Separation, is washed repeatedly using ethanol solution, obtained black solid is carried out cold
Dry be then stored in anaerobic drier is lyophilized;
It is prepared by the composite material of second step, nano zero valence iron and clay mineral:
First by above-mentioned nano zero valence iron and bentonite according to mass ratio 2:1 adequately mixing, is additionally added the oxidation of 10%-50%
Calcium and ethylenediamine tetra-acetic acid obtain novel ecological renovation agent.
2. a kind of novel ecological reparation for carrying out in-situ immobilization to Heavy Metals in Contaminated Soils according to claim 1
Agent, it is characterised in that:The bentonite is the various clay minerals based on montmorillonite.
3. a kind of novel ecological renovation agent, it is characterised in that:Include following composition according to weight percent:
Nano zero valence iron:20-40%;
Bentonite:10-20%;
Calcium oxide:15-50%;
Ethylenediamine tetra-acetic acid:10-15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810441131.1A CN108690626A (en) | 2018-05-10 | 2018-05-10 | A kind of novel ecological renovation agent and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810441131.1A CN108690626A (en) | 2018-05-10 | 2018-05-10 | A kind of novel ecological renovation agent and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108690626A true CN108690626A (en) | 2018-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810441131.1A Pending CN108690626A (en) | 2018-05-10 | 2018-05-10 | A kind of novel ecological renovation agent and its production technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN108690626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652080A (en) * | 2019-01-09 | 2019-04-19 | 中国农业大学 | A kind of soil-repairing agent and preparation method thereof |
| CN110387240A (en) * | 2019-06-21 | 2019-10-29 | 广西博世科环保科技股份有限公司 | It is a kind of for repairing the passivator and its application method of more metal combined contamination soils |
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| JP2005525210A (en) * | 2001-08-03 | 2005-08-25 | パース・エンバイロメンタル・インコーポレーテツド | Media for transporting environmental improvers |
| CN103143705A (en) * | 2013-03-29 | 2013-06-12 | 湖南科技大学 | Alumina-clad iron nanoparticles and preparation method as well as application thereof |
| CN103787558A (en) * | 2012-11-01 | 2014-05-14 | 深圳市海川实业股份有限公司 | Heavy metal stabilizer used for sludge treatment, and method for treating sludge by adopting it |
| CN104117532A (en) * | 2013-04-23 | 2014-10-29 | 苏州中科慧盛生物科技有限公司 | Nano-material repairing agent restoring heavy-metal polluted soil and restoring method using same |
-
2018
- 2018-05-10 CN CN201810441131.1A patent/CN108690626A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005525210A (en) * | 2001-08-03 | 2005-08-25 | パース・エンバイロメンタル・インコーポレーテツド | Media for transporting environmental improvers |
| CN103787558A (en) * | 2012-11-01 | 2014-05-14 | 深圳市海川实业股份有限公司 | Heavy metal stabilizer used for sludge treatment, and method for treating sludge by adopting it |
| CN103143705A (en) * | 2013-03-29 | 2013-06-12 | 湖南科技大学 | Alumina-clad iron nanoparticles and preparation method as well as application thereof |
| CN104117532A (en) * | 2013-04-23 | 2014-10-29 | 苏州中科慧盛生物科技有限公司 | Nano-material repairing agent restoring heavy-metal polluted soil and restoring method using same |
Non-Patent Citations (1)
| Title |
|---|
| 吕晓书、蒋光明、徐新华: "《纳米零价铁材料：制备方法、性能表征及应用实例》", 31 August 2017, 西南师范大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652080A (en) * | 2019-01-09 | 2019-04-19 | 中国农业大学 | A kind of soil-repairing agent and preparation method thereof |
| CN109652080B (en) * | 2019-01-09 | 2020-05-05 | 中国农业大学 | Soil remediation agent and preparation method thereof |
| CN110387240A (en) * | 2019-06-21 | 2019-10-29 | 广西博世科环保科技股份有限公司 | It is a kind of for repairing the passivator and its application method of more metal combined contamination soils |
| CN110387240B (en) * | 2019-06-21 | 2021-12-21 | 广西博世科环保科技股份有限公司 | Passivator for repairing multi-metal composite contaminated soil and use method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181023 |