CN101555061B - Composition for aquatic system chemical purification treatment based on nano technology - Google Patents
Composition for aquatic system chemical purification treatment based on nano technology Download PDFInfo
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- CN101555061B CN101555061B CN2009101374186A CN200910137418A CN101555061B CN 101555061 B CN101555061 B CN 101555061B CN 2009101374186 A CN2009101374186 A CN 2009101374186A CN 200910137418 A CN200910137418 A CN 200910137418A CN 101555061 B CN101555061 B CN 101555061B
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- sodium percarbonate
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Abstract
本发明涉及一种基于纳米技术的水体化学净化处理用组合物，属于水体化学净化处理领域。针对水中难降解有机污染物处理困难问题，本发明旨在研发一种高效绿色的水体化学净化用组合物。本案组合物其各成分重量百分含量如下：过碳酸钠50％～80％；纳米AlOOH粉20％～50％。其中，过碳酸钠优选形态呈粉态，该粉态过碳酸钠的粒径优选值介于1微米～500微米之间。纳米AlOOH粉的粒径优选值介于10纳米～600纳米之间，并且，组合物成品内各颗粒的优选形态是：纳米AlOOH粉裹覆于过碳酸钠粉体颗粒的表面上。纳米AlOOH粉作为外稳定剂保护着固体过碳酸钠中的活性氧，同时，过碳酸钠在水溶液中的碱性作用能促进铝盐进一步水解，强化了其絮凝效果。The invention relates to a composition for water body chemical purification treatment based on nanotechnology, which belongs to the field of water body chemical purification treatment. Aiming at the problem of difficult treatment of refractory organic pollutants in water, the present invention aims to develop a high-efficiency and green composition for chemical purification of water body. The weight percentage of each component of the composition of the present case is as follows: 50%-80% of sodium percarbonate; 20%-50% of nanometer AlOOH powder. Wherein, the preferred form of sodium percarbonate is powder state, and the preferred particle size of the powder state sodium percarbonate is between 1 micron and 500 microns. The preferred particle size of the nano-AlOOH powder is between 10 nanometers and 600 nanometers, and the preferred form of each particle in the finished composition is: the nano-AlOOH powder is coated on the surface of the sodium percarbonate powder particles. Nano-AlOOH powder is used as an external stabilizer to protect the active oxygen in solid sodium percarbonate. At the same time, the alkaline action of sodium percarbonate in aqueous solution can promote the further hydrolysis of aluminum salt and strengthen its flocculation effect.
Description
Technical field
The present invention relates to a kind of composition for aquatic system chemical purification treatment, belong to the aquatic system chemical purification process field based on nanotechnology.
Background technology
At present, traditional to mainly containing chlorine class and oxygen class in the agent of former water chemistry oxide treatment.The chlorine class comprises liquid chlorine, chlorinated lime and dioxide peroxide etc., easily generates harmful disinfection byproduct (DBP) such as haloform (THM after the chloridized
3); Dioxide peroxide can cause hemolytic anemia and denatured hemoglobin disease.The oxygen class mainly contains ozone, hydrogen peroxide and Peracetic Acid etc.The oxidation cost of ozone is higher and lack the persistence effect, and hydrogen peroxide and Peracetic Acid instability are easy to decompose, and are difficult to transportation and preservation.Therefore, the searching effectively organic pollutant in the degradation water again can environment amenable high-level oxidation technology, is the important directions of drinking water treatment technical development both at home and abroad at present.In the drinking water treatment process of routine, flocculation is one of important technical process, and the quality of its treatment effect directly influences to the water quality of follow-up processing flow and even water outlet.Traditional drinking water treatment flocculation process mainly utilizes inorganic salt such as aluminium salt and molysite etc. to pass through compression double electric layer, adsorption bridging, volume is beaten and the steady cohesion of taking off that is used for finishing to suspended substance in the water and colloidal type non-solubility material such as is caught, so that impurity is removed in subsequent technique.But to solvability impurity such as organic pollutant, the effect of traditional flocculation treatment is unsatisfactory.
Summary of the invention
Technical problem to be solved by this invention is, at the problem of Persistent organic pollutants difficult treatment in the water.Research and develop a kind of new efficient, green composition for aquatic system chemical purification treatment, when the application said composition is carried out the water body purification processing, should dispose organic pollutant, composition self can be decomposed into innoxious substance again.
The present invention solve the technical problem by following scheme, and this scheme provides a kind of composition for aquatic system chemical purification treatment based on nanotechnology, and the weight percentage of each composition is as follows in the said composition:
SPC-D 50%～80%;
Nano gamma-AlOOH powder 20%～50%.
Said composition both can be two compositions that the simple and mechanical mixing of relevant component forms; Said composition also can be the composition that is prepared from via the complicated chemical approach; The higher limit of each component content scope of composition and lower value and intermediate value all are the suitable content value that allows.
Also can allow stablizer in a small amount in the said composition and exist, described stablizer is solubility magnesium salts or water glass or this both combination of a small amount of for example.Described stablizer is optional.
The form of SPC-D composition is not wherein limit, and it is form, for example bulk, strip, spherical and various size particles shape arbitrarily that the form of described SPC-D can allow; The preferred configuration of SPC-D is the powder attitude, and the particle diameter preferred value of described powder attitude SPC-D is between 1 micron～500 microns.Powder attitude SPC-D is used more convenient.
It is the particulate matter of any form on the nanotechnology meaning that its particle diameter of nano gamma-AlOOH powder in the composition can allow, and its preferred value of the particle diameter of described nano gamma-AlOOH powder is between 10 nanometers～600 nanometers; Described nano gamma-AlOOH powder can mix with described SPC-D in any way, its mixed form without limits, but described nano gamma-AlOOH powder and the mixed preferred configuration of described SPC-D are: the nano gamma-AlOOH powder wraps on the surface of SPC-D powder granule.
Be two correlated conditions such as alkalescence when having possessed the oxidisability that promotes organic pollutant degradation and hydrolysis in view of SPC-D, SPC-D has under usual condition characteristics such as stable, shock resistance as solid peroxide, be the oxygenant of a kind of safe, cheap, gentle, multi-usage and environmental sound, in the organo-functional group oxidizing reaction, also obtain more and more many attention.The aqueous solution of SPC-D shows alkalescence, can spontaneously discharge H in water
2O
2, and with nucleophilic peroxide anionic form (HO
2 -) exist.So, the chemical property of the aqueous solution of SPC-D and H
2O
2Alkaline aqueous solution similar, and owing to comprising that percarbonic acid root negatively charged ion has the activity of higher oxidizing reaction and nucleophilic hydrolysis reaction.Use sol-gel method and be prepared into composite nano AlOOH surface coated sodium percarbonate water purification agent.The nano gamma-AlOOH film is being protected active oxygen in the solid SPC-D as outer stabilizer on the one hand; On the other hand, the alkaline interaction energy of SPC-D in the aqueous solution promotes the further hydrolysis of aluminium salt, strengthened its flocculating effect.And, use the effect of nano gamma-AlOOH film coated sodium percarbonate by the Surface Physical chemistry, strengthen its adsorptive power widely to micro quantity organic pollutant.Simultaneously, the oxidation susceptibility of SPC-D helps these organic pollutants of degraded, can show synergistic effect preferably.Because the oxygen anion (HO excessively that SPC-D produces
2 -) can sulfur oxide for the P=S of functional group in the organophosphorus pesticide to P=O, and further functional group such as phosphorus oxide acid esters and C=C; Its aqueous solution has alkalescence, the nucleophilic reagent HO of generation
2 -More help hydrolysis reaction.So SPC-D has possessed the oxidation of promotion organic pollutant degradation and two correlated conditions of alkaline hydrolysis.And SPC-D can become carboxylic acid by the oxidative degradation dione compounds, so phenol compound may be oxidized to quinone, further is degraded into carboxylic acid again.Therefore, nano gamma-AlOOH film coated sodium percarbonate particulate possesses organic pollutant and phenol compound absorption and Degradation ability.
Advantage of the present invention is, said composition can either be disposed organic pollutant in application, and self can be decomposed into innoxious substance again.Said composition has solved the traditional biological and chemical oxidation treatment method of simple dependence and be difficult to fundamentally eliminate problem such as Persistent organic pollutants in the water under the current situation of China.
This case composition can be via number of ways production, produce, described approach for example:
Approach one: in the aqueous solution or circulating mother liquor, add anhydrous sodium carbonate, make hydrated sodium carbonate suspension through the emulsification hydration reaction; Hydrated sodium carbonate suspension and aqueous hydrogen peroxide solution import reaction kettle for reaction with certain speed that adds, and reaction makes the sodium percarbonate crystal product; The crystallisate solid-liquid separation, filtrate cycle is used, and crystallisate becomes to contain the SPC-D solid of small amount of moisture through aftertreatment; Adding aluminum isopropylate, ethanol and small amount of deionized water in the SPC-D solid is hydrolyzed under the condition of heating and obtains comparatively stable AlOOH colloidal sol and carry out heat aging with further stable; Obtain nano gamma-AlOOH surface coated sodium percarbonate particle at last.
Approach two: aluminum isopropylate, ethanol and small amount of deionized water are hydrolyzed and obtain comparatively stable AlOOH colloidal sol under the condition of heating, then SPC-D solid and the stablizers such as solubility magnesium salts and water glass that obtain in the scheme one are added wherein, and carry out heat aging with further stable; Obtain nano gamma-AlOOH surface coated sodium percarbonate particle at last.
Embodiment
SPC-D is that yellow soda ash and hydrogen peroxide utilize the formed a kind of unsettled mixture of hydrogen bond.Because SPC-D is at high temperature decomposed easily, so reaction must be carried out at low temperatures.Some reactions below generally in solution, existing:
Main reaction: 2Na
2CO
3+ 3H
2O
2=2Na
2CO
33H
2O
2
Side reaction: 2Na
2CO
33H
2O
2=2Na
2CO
3+ 3H
2O
22H
2O
2=H
2O+O
2
Raw materials used aluminum isopropylate molecular weight is 204.24, and the formula weight of corresponding nano gamma-AlOOH powder is 59.98, and wherein, AlOOH is commonly called as and is alkali type aluminium oxide, ALUMINA HYDRATE.
Now in conjunction with some object lessons introduce described composition production, produce approach:
Embodiment 1: the saturated sodium carbonate solution for preparing is added reactor, add organic solvent Virahol or ethanol then, and adding a small amount of solubility magnesium salts and water glass stablizer, add hydrogen peroxide again, under 0～5 ℃ of condition, react, the SPC-D that generates is through centrifugation, the dry finished product that gets, and is standby, reserve level 100 grams.
Get SPC-D solid 80.00 grams that prepare, add aluminum isopropylate 68.02 gram, 250 milliliters of ethanol and small amount of deionized water therein, under the condition of heating, be hydrolyzed and obtain comparatively stable AlOOH colloidal sol, and heat aging is with further stable, after the pulverizing, obtain composition for aquatic system chemical purification treatment based on nanotechnology.In the ingredients 68.02 gram aluminum isopropylate corresponding A lOOH amount is 20.00 grams.
Embodiment 2: get the saturated sodium carbonate solution for preparing and add reactor, add organic solvent Virahol or ethanol then, and adding a small amount of solubility magnesium salts and water glass stablizer, add hydrogen peroxide again, under 0～5 ℃ of condition, react, the SPC-D that generates is through centrifugation, the dry finished product that gets, and is standby, reserve level 100.00 grams.
Get SPC-D solid 50.00 grams that prepare, go into to add aluminum isopropylate 170.26 gram, 500 milliliters of ethanol and small amount of deionized water at it, under the condition of heating, be hydrolyzed and obtain comparatively stable AlOOH colloidal sol, and heat aging is with further stable, after the pulverizing, obtain composition for aquatic system chemical purification treatment based on nanotechnology.In the ingredients 170.26 gram aluminum isopropylate corresponding A lOOH amount is 50.00 grams.
Embodiment 3: get the saturated sodium carbonate solution for preparing and add reactor, add organic solvent Virahol or ethanol then, and adding a small amount of solubility magnesium salts and water glass stablizer, add hydrogen peroxide again, under 0～5 ℃ of condition, react, the SPC-D that generates is through centrifugation, the dry finished product that gets, and is standby, reserve level 100.00 grams.
Get SPC-D solid 65.00 grams of producing, go into to add aluminum isopropylate 119.18 gram, 350 milliliters of ethanol and small amount of deionized water at it, under the condition of heating, be hydrolyzed and obtain comparatively stable AlOOH colloidal sol, and heat aging is with further stable, after the pulverizing, obtain composition for aquatic system chemical purification treatment based on nanotechnology.In the ingredients 119.18 gram aluminum isopropylate corresponding A lOOH amount is 35.00 grams.
The approach of producing of this case composition is not limited to above-mentioned each example.
Claims (1)
1. based on the composition for aquatic system chemical purification treatment of nanotechnology, the weight percentage of each composition is as follows in the said composition: SPC-D 50%～80%, nano gamma-AlOOH powder 20%～50%; SPC-D is the powder attitude, and the particle diameter of described powder attitude SPC-D is between 1 micron～500 microns; The particle diameter of nano gamma-AlOOH powder is between 10 nanometers～600 nanometers, and the nano gamma-AlOOH powder wraps on the surface of SPC-D powder granule.
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|---|---|---|---|
| CN2009101374186A CN101555061B (en) | 2009-04-20 | 2009-04-20 | Composition for aquatic system chemical purification treatment based on nano technology |
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|---|---|---|---|
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| CN101555061A CN101555061A (en) | 2009-10-14 |
| CN101555061B true CN101555061B (en) | 2011-08-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732821B (en) * | 2009-12-04 | 2012-10-24 | 南京师范大学 | Nano AlOOH-coated sodium percarbonate degradation agent for pyrethroids pesticides and preparation method and application thereof |
| FI127073B (en) * | 2011-12-30 | 2017-10-31 | Kemira Oyj | Improvement of biocidal action of peracids |
| RU2742169C1 (en) | 2020-06-05 | 2021-02-02 | Общество с ограниченной ответственностью "Листерра" | Solution for cleaning water bodies from cyanobacteria and green algae |
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2009
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