CN103724659A - Processing method of degradable foamed plastic lunch box - Google Patents
Processing method of degradable foamed plastic lunch box Download PDFInfo
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- CN103724659A CN103724659A CN201310609802.8A CN201310609802A CN103724659A CN 103724659 A CN103724659 A CN 103724659A CN 201310609802 A CN201310609802 A CN 201310609802A CN 103724659 A CN103724659 A CN 103724659A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention provides a processing method of a degradable foamed plastic lunch box. The processing method comprises steps as follows: a), degradation pretreatment; b), sulfonation and grafting reaction treatment; and c), photo-assisted Fenton reaction treatment. The invention discloses the processing method of the degradable foamed plastic lunch box. The processing method is simple and reasonable; and degradation and mineralization of the foamed plastic lunch box are realized through an optimized Fenton reaction, environmental pollution is avoided, and the processing method has a high practical value.
Description
Technical field
The present invention relates to a kind of plastic degradation method, be specifically related to a kind of working method of degradable foam plastics lunch box, belong to technical field of plastic.
Background technology
Along with scientific and technological progress and the development of plastics industry, various plastics are widely used in social production, sphere of life, and wherein porous plastics lunch box is one of the most widely used plastics.The main component of porous plastics lunch box is nondegradable polystyrene, a large amount of uses due to porous plastics lunch box, in regions such as city suburbs, the waters surface, formed a large amount of white pollutions, these porous plastics lunch boxes are due to the constructional feature of himself, in physical environment, be difficult to be degraded by microorganisms, lifetime is centuries.The generation of a large amount of plastic garbages and pile up and not only take valuable land resources, affects attractive in appearancely, and swims in and on the waters surface such as navigation channel, ocean, causes a lot of potential bad hidden dangers.
In recent years, China was just presenting quick up-trend to the use of porous plastics lunch box, and was that burning disposal or deep layer are buried to the improvement method of porous plastics lunch box routine, but was easy to cause secondary pollution.Therefore need to seek a kind of method of green degradable foam plastics lunch box, to realize the thorough degraded mineralising to porous plastics lunch box, conservation of nature environment.
Summary of the invention
For the demand, the invention provides a kind of working method of degradable foam plastics lunch box, this working method advantages of simple, has realized the degraded mineralising of porous plastics lunch box by the Fenton's reaction of optimizing, avoided environmental pollution, has very high practical value.
The present invention is a kind of working method of degradable foam plastics lunch box, and described working method comprises the steps: a) degraded pre-treatment, and b) sulfonation graft reaction is processed, and c) light helps Fenton's reaction to process.
In a preferred embodiment of the present invention, in described step a), degraded pre-treatment comprises the steps: 1) pulverize porous plastics lunch box; 2) prepare degraded raw material.
In a preferred embodiment of the present invention, described degraded raw material comprises 1,2-dichloroethane solution, concentrated nitric acid, sulphuric acid soln, deionized water, ferric chloride Solution, hydrogen peroxide solution and hydrochloric acid soln.
In a preferred embodiment of the present invention, in described step b), sulfonation graft reaction is processed and to be comprised the steps: 1) the porous plastics lunch box pulverizing is put in 1,2-dichloroethane solution to swelling and added concentrated nitric acid; 2) in reacted solution, add sulphuric acid soln and deionized water, after repeatedly filtering, cleaning, dry.
In a preferred embodiment of the present invention, the formula that described sulfonation graft reaction is processed is shown with 1g porous plastics lunch box processing list: 10ml 1,2-dichloroethane solution, 6ml concentrated nitric acid, 50ml sulphuric acid soln, 250ml deionized water.
In a preferred embodiment of the present invention, in described step c), light helps Fenton's reaction to process and comprises the steps: 1) iron(ic) chloride and the hydrogen peroxide mixed solution of preparation pH value 2.5; 2) plastics after sulfonation are put into mixing solutions and carried out Fenton's reaction under the light of xenon lamp power supply helps; 3) in reaction soln, add hydrogen peroxide to regulate iron concentration and hydrogen peroxide concentration and then optimization reaction conditions.
In a preferred embodiment of the present invention, in described Fenton's reaction solution, iron concentration is 40.2umol, and hydrogen peroxide concentration is 14.1mmol.
The present invention has disclosed a kind of working method of degradable foam plastics lunch box, and this working method advantages of simple has realized the degraded mineralising of porous plastics lunch box by the Fenton's reaction of optimizing, avoided environmental pollution, has very high practical value.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the process figure of the working method of embodiment of the present invention degradable foam plastics lunch box.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Fig. 1 is the process figure of the working method of embodiment of the present invention degradable foam plastics lunch box; This working method comprises the steps: a) degraded pre-treatment, and b) sulfonation graft reaction is processed, and c) light helps Fenton's reaction to process.
Embodiment
Concrete working method is as follows:
A) degraded pre-treatment, concrete treating processes is: first porous plastics lunch box is put into pan mill cutting into about the fragment of 1cm, and collected plastic flakes; Then be ready to the raw material of degradative plastics fragment, degraded raw material comprises 1,2-dichloroethane solution, concentrated nitric acid, sulphuric acid soln, deionized water, ferric chloride Solution, hydrogen peroxide solution and hydrochloric acid soln.
B) sulfonation graft reaction is processed, concrete treating processes is: first the porous plastics lunch box pulverizing is put into 80 ℃ 1, swelling 0.5h in 2-dichloroethane solution, then concentrated nitric acid is added to 1 under constantly stirring, in 2-dichloroethane solution, guarantee that plastic flakes carries out sufficient sulfonation graft reaction; The sulphuric acid soln and the deionized water that after question response finishes, add concentration 3 mol/L, after filtration, clean, until that scavenging solution pH value approaches is neutral, finally dry stand-by by the plastic flakes after sulfonation again.In sulfonation graft reaction treating processes, the various composition of raw materials of selecting are shown with 1g porous plastics lunch box processing list: 10ml 1,2-dichloroethane solution, 6ml concentrated nitric acid, 50ml sulphuric acid soln, 250ml deionized water.
C) light helps Fenton's reaction to process, and concrete treating processes is: first a certain amount of ferric chloride Solution and hydrogen peroxide solution mixing are placed in to reaction vessel special, and regulate mixing solutions pH value to 2.5 with the hydrochloric acid soln of concentration 1mol/L; Then the plastic flakes of processing after the sulfonation obtaining in step b) is added in reaction vessel, open xenon lamp power supply preheating 30min simultaneously, aimed at reaction soln and under magnetic stirring apparatus uniform stirring, carry out Fenton's reaction; Question response successively adds appropriate hydrogen peroxide in backward reaction soln in 1 hour, until regulate iron concentration, is 40.2umol, and hydrogen peroxide concentration is 14.1mmol, reaches optimum reaction condition.Because first having passed through sulfonation graft reaction, processes by porous plastics lunch box; its surface grafting sulfonic acid group, then under optimal conditions, carried out again light and helped Fenton's reaction to process, therefore can realize whole mineralisings of degrading; can not cause white pollution, better protecting physical environment.
The present invention has disclosed a kind of working method of degradable foam plastics lunch box, and this working method advantages of simple has realized the degraded mineralising of porous plastics lunch box by the Fenton's reaction of optimizing, avoided environmental pollution, has very high practical value.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. a working method for degradable foam plastics lunch box, is characterized in that, described working method comprises the steps: a) degraded pre-treatment, and b) sulfonation graft reaction is processed, and c) light helps Fenton's reaction to process.
2. the working method of degradable foam plastics lunch box according to claim 1, is characterized in that, in described step a), degraded pre-treatment comprises the steps: 1) pulverize porous plastics lunch box; 2) prepare degraded raw material.
3. the working method of degradable foam plastics lunch box according to claim 2, is characterized in that, described degraded raw material comprises 1,2-dichloroethane solution, concentrated nitric acid, sulphuric acid soln, deionized water, ferric chloride Solution, hydrogen peroxide solution and hydrochloric acid soln.
4. the working method of degradable foam plastics lunch box according to claim 1, it is characterized in that, in described step b), sulfonation graft reaction is processed and to be comprised the steps: 1) the porous plastics lunch box pulverizing is put in 1,2-dichloroethane solution to swelling and added concentrated nitric acid; 2) in reacted solution, add sulphuric acid soln and deionized water, after repeatedly filtering, cleaning, dry.
5. the working method of degradable foam plastics lunch box according to claim 4, it is characterized in that, the formula that described sulfonation graft reaction is processed is shown with 1g porous plastics lunch box processing list: 10ml 1,2-dichloroethane solution, 6ml concentrated nitric acid, 50ml sulphuric acid soln, 250ml deionized water.
6. the working method of degradable foam plastics lunch box according to claim 1, is characterized in that, in described step c), light helps Fenton's reaction to process and comprises the steps: 1) iron(ic) chloride and the hydrogen peroxide mixed solution of preparation pH value 2.5; 2) plastics after sulfonation are put into mixing solutions and carried out Fenton's reaction under the light of xenon lamp power supply helps; 3) in reaction soln, add hydrogen peroxide to regulate iron concentration and hydrogen peroxide concentration and then optimization reaction conditions.
7. the working method of degradable foam plastics lunch box according to claim 6, is characterized in that, in described Fenton's reaction solution, iron concentration is 40.2umol, and hydrogen peroxide concentration is 14.1mmol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609802.8A CN103724659A (en) | 2013-11-27 | 2013-11-27 | Processing method of degradable foamed plastic lunch box |
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| CN201310609802.8A CN103724659A (en) | 2013-11-27 | 2013-11-27 | Processing method of degradable foamed plastic lunch box |
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| CN103724659A true CN103724659A (en) | 2014-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466095A (en) * | 2021-06-02 | 2021-10-01 | 国科大杭州高等研究院 | Method for determining content of granular black carbon in water environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466095A (en) * | 2021-06-02 | 2021-10-01 | 国科大杭州高等研究院 | Method for determining content of granular black carbon in water environment |
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Application publication date: 20140416 |