CN103937506A - Degradable soil modifier - Google Patents
Degradable soil modifier Download PDFInfo
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- CN103937506A CN103937506A CN201410078357.1A CN201410078357A CN103937506A CN 103937506 A CN103937506 A CN 103937506A CN 201410078357 A CN201410078357 A CN 201410078357A CN 103937506 A CN103937506 A CN 103937506A
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Abstract
The present invention relates to a degradable soil modifier, wherein nanometer iron powder or other nano-scale metal particles harmless for human body are added to a degradable polymer emulsion, the emulsion comprises aliphatic polycarbonate, aliphatic polyester, an environmental protection solvent and an emulsifier, and the solid content is 10-50%. According to the present invention, after the degradable soil modifier is applied in soil with excessive heavy metal ion content, the nanometer iron powder or other nano-scale metal particles harmless for human body are adopted to change the existing state of the heavy metal in the soil so as to convert the activation state into the stable state and reduce the heavy metal ion content in the soil.
Description
Technical field
The invention belongs to soil improvement agent field, relate to a kind of degradable soil modifying agent, for improveing the soil of heavy-metal pollution, mainly formed by harmless nanometer grade gold metal particles and a kind of degradable macromolecule emulsion.
Background technology
Land resources is the important foundation of the sustainable development of socio-economy.Implementing effective land development arrangement is the fundamental state policy of implementing " extremely treasure, rationally utilize soil and conscientiously protect farmland ", is the important channel that creates sustainable agriculture production model.In recent years, along with the increase of industry, the aggravation of municipal pollution and agrochemicals kind, quantity, heavy metal is excessive buildup in soil, and the pollution causing is day by day serious.Heavy metal pollution of soil has the pollutent feature that poor mobility, residence time are grown, can not be degraded by microorganisms in soil.The heavy metal of contaminated soil comprises that the significant element of bio-toxicity is as cadmium, lead, mercury, chromium, arsenic, and by the element of certain toxicity as copper, zinc, nickel.This class pollution range is wide, the time length is long, it is hidden to pollute, cannot be biodegradable, and will greatly cause Soil degradation, and Crop yield and quality declines, and by runoff, leaching loss effect polluted surface water and underground water.Excessive heavy metal will produce detrimentally affect to physiological function of plants, make its nutritional trouble.That mercury, arsenic can suppress is nitrated in soil, Ammonifying bacteria is movable, hinders nitrogen supply.Heavy metal can and generate the methyl compound that toxicity is stronger by food chain enrichment, poisons food chain biology, finally at people's cylinder accumulation, and harm humans health.
Administer at present heavy metal pollution of soil and can adopt in theory physical measure, chemical, biological control measure and agricultural measures, comprise soil removal and replacement, dig, plant have the specific heavy metal of enrichment crop or edible mushrooms, use soil improvement agent, applying organic manure etc., but these methods are if it were not for cost hi-tech complexity, otherwise be exactly long DeGrain of improvement cycle, feasibility is not high.
Summary of the invention
The present invention adopts nanometer iron powder or other harmless nanometer grade gold metal particles is joined in a kind of degradable macromolecule emulsion, this emulsion is made up of aliphatic polycarbonate, aliphatic polyester and environmentally friendly solvent and emulsifying agent, and solids content is wherein 10-50%.After using in soil, utilize nanometer iron powder or other harmless nanometer grade gold metal particles wherein to change the existence of heavy metal in soil, make it transfer stable state to by activated state.When nanometer iron powder or other harmless nanometer grade gold metal particles join in soil, can be by adsorbing with pollutent, redox reaction alleviates or removes pollutent toxicity, increase the absorption of metal ion in soil, form precipitation with heavy metal ion, thereby reduce the Transport And Transformation characteristic of metal ion.Nanometer grade gold metal particles is owing to having huge micro-interface, polluted heavy metals ion in soil is had to extremely strong adsorption, and this strong adsorption will be brought into play very important effect to the migration, conversion and the biological effectiveness thereof that reduce Heavy Metals in Contaminated Soils ion.Soil improvement agent in this patent, as required soil is first deep ploughed more than 60cm, then application effect is better.In addition, iron ion or other harmless particles itself are a kind of metallic elements of needed by human, therefore after using, can not produce harmful material.Soil improvement agent in this project also can, by being sprayed in the sewage that heavy metal content exceeds standard, carry out sewage disposal.
Embodiment
Embodiment 1: first prepare macromolecule emulsion, 1kg carbon dioxide copolymer is dissolved with poly-methylcarbonate, be mixed with 30% solution, add 0.05kg sorbester p17 to carry out emulsification simultaneously., then get 0.1kg polyvinyl alcohol and be mixed with 30% the aqueous solution then.Two kinds of solution are used to refiner high-speed stirring, and speed 5000 r/min, took out after ten minutes.Then add the iron powder 0.1g of 100 nano-scale, this emulsion is sprayed on the soil pattern that heavy metal content exceeds standard, by observing, the heavy metal ion content in measured soil again after a week, result reduces by 50%.
Embodiment 2: preparation macromolecule emulsion, 1kg carbon dioxide copolymer is dissolved with poly-methylcarbonate, be mixed with 30% solution, add 0.05kg sorbester p17 to carry out emulsification simultaneously., then get 0.1kg polyvinyl alcohol and be mixed with 30% the aqueous solution then.Two kinds of solution are used to refiner high-speed stirring, and speed 5000 r/min, took out after ten minutes.Then add the iron powder 0.2g of 100 nano-scale, this emulsion is sprayed on the soil pattern that heavy metal content exceeds standard, by observing, the heavy metal ion content in measured soil again after a week, result reduces by 80%.
Embodiment 3: first prepare macromolecule emulsion, 1kg carbon dioxide copolymer is dissolved with poly-methylcarbonate, be mixed with 50% solution, add 0.05kg sorbester p17 to carry out emulsification simultaneously., then get 0.1kg polyvinyl alcohol and be mixed with 30% the aqueous solution then.Two kinds of solution are used to refiner high-speed stirring, and speed 5000 r/min, took out after ten minutes.Then add the iron powder 0.1g of 40 nano-scale, this emulsion is sprayed on the soil pattern that heavy metal content exceeds standard, by observing, the heavy metal ion content in measured soil again after a week, result reduces by 70%.
Claims (5)
1. a degradable soil improvement agent, is characterized in that: main component comprises nano grade iron powder or other harmless nanometer grade gold metal particles and a kind of macromolecule emulsion.
2. the particle diameter of the nano grade iron powder in claim 1 or other metallic particles is below 100 nanometers.
3. the content of the nano grade iron powder in claim 1 or other metallic particles, calculates with mass parts, accounts for 1-0.01% of total mass.
4. the macromolecule emulsion in claim 1 comprises aliphatic polycarbonate, aliphatic polyester and environmentally friendly solvent and emulsifying agent.
5. the solids content of the macromolecule emulsion in claim 4, calculates with mass parts, is between 10-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078357.1A CN103937506A (en) | 2014-03-06 | 2014-03-06 | Degradable soil modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078357.1A CN103937506A (en) | 2014-03-06 | 2014-03-06 | Degradable soil modifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103937506A true CN103937506A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410078357.1A Pending CN103937506A (en) | 2014-03-06 | 2014-03-06 | Degradable soil modifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN103937506A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817413A (en) * | 2015-04-14 | 2015-08-05 | 中山大学 | Environment-friendly water-soil conserving soil modifier formula |
| CN106938275A (en) * | 2017-03-22 | 2017-07-11 | 中国石油大学(华东) | Pyrolysis bio-oils produce chromium-polluted soil biofluid humic acid in-situ immobilization agent |
| CN109265297A (en) * | 2018-11-20 | 2019-01-25 | 代彦霞 | A kind of basic soil repair materials and preparation method thereof |
| CN109294598A (en) * | 2018-11-22 | 2019-02-01 | 四川大学 | A kind of long-acting repair materials of chromium pollution soil in-situ |
| CN109967520A (en) * | 2019-03-08 | 2019-07-05 | 华中农业大学 | Purposes and a kind of arsenic in soil activator of the sorbitan fatty acid ester in activating soil arsenic |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134898A (en) * | 2006-08-31 | 2008-03-05 | 吉林金源北方科技发展有限公司 | Degradable alkaline land modifying agent and method for making same |
| CN102380505A (en) * | 2011-08-08 | 2012-03-21 | 同济大学 | Method for repairing heavy metal-polluted soil or sludge with nano-zero-valent iron (nZVI) |
| CN103194240A (en) * | 2013-03-31 | 2013-07-10 | 冯超 | Dustproof sand stabilizing biodegradable high-molecular emulsion and preparation method thereof |
-
2014
- 2014-03-06 CN CN201410078357.1A patent/CN103937506A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134898A (en) * | 2006-08-31 | 2008-03-05 | 吉林金源北方科技发展有限公司 | Degradable alkaline land modifying agent and method for making same |
| CN102380505A (en) * | 2011-08-08 | 2012-03-21 | 同济大学 | Method for repairing heavy metal-polluted soil or sludge with nano-zero-valent iron (nZVI) |
| CN103194240A (en) * | 2013-03-31 | 2013-07-10 | 冯超 | Dustproof sand stabilizing biodegradable high-molecular emulsion and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817413A (en) * | 2015-04-14 | 2015-08-05 | 中山大学 | Environment-friendly water-soil conserving soil modifier formula |
| CN106938275A (en) * | 2017-03-22 | 2017-07-11 | 中国石油大学(华东) | Pyrolysis bio-oils produce chromium-polluted soil biofluid humic acid in-situ immobilization agent |
| CN109265297A (en) * | 2018-11-20 | 2019-01-25 | 代彦霞 | A kind of basic soil repair materials and preparation method thereof |
| CN109294598A (en) * | 2018-11-22 | 2019-02-01 | 四川大学 | A kind of long-acting repair materials of chromium pollution soil in-situ |
| CN109294598B (en) * | 2018-11-22 | 2021-04-23 | 四川大学 | Chromium-contaminated soil in-situ long-acting remediation material |
| CN109967520A (en) * | 2019-03-08 | 2019-07-05 | 华中农业大学 | Purposes and a kind of arsenic in soil activator of the sorbitan fatty acid ester in activating soil arsenic |
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Application publication date: 20140723 |