CN103936085A - Environmental-friendly high-efficient decontaminating agent used for aniline water body leakage - Google Patents
Environmental-friendly high-efficient decontaminating agent used for aniline water body leakage Download PDFInfo
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- CN103936085A CN103936085A CN201410030432.7A CN201410030432A CN103936085A CN 103936085 A CN103936085 A CN 103936085A CN 201410030432 A CN201410030432 A CN 201410030432A CN 103936085 A CN103936085 A CN 103936085A
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- aniline
- decontamination
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Abstract
The invention relates to an environmental-friendly high-efficient decontaminating agent used for aniline water body leakage. The environmental-friendly high-efficient decontaminating agent comprises an iron catalyst, hydrogen peroxide, and deionized water. An application method of the environmental-friendly high-efficient decontaminating agent comprises following steps: pH value of aniline leakage water body is adjusted firstly; the iron catalyst is added into the aniline leakage water body; and hydrogen peroxide is added for 30min of decontamination after full mixing, wherein when the environmental-friendly high-efficient decontaminating agent is used for decontamination of 8000mg/l aniline, preferable conditions are that, pH value is adjusted to 4.5, the concentration of the added iron catalyst is 15g/l, the concentration of added hydrogen peroxide is 60ml/l, and an environment temperature is controlled to be 30 DEG C. According to the environmental-friendly high-efficient decontaminating agent used for aniline water body leakage, optimization of decontamination conditions is capable of delaying decrease of aniline decontamination rate greatly, and decontamination rate is increased greatly under the same aniline initial concentration after optimization of decontamination conditions.
Description
Technical field
The present invention relates to a kind of decontaminant, particularly the efficient decontaminant of a kind of aniline water body leakage environmental protection.
Background technology
Hazardous chemical aniline is one of important aromatic amine, is also one of important amine substance.Belong to colourless or micro-yellow oily liquid, there is overpowering odor, be slightly soluble in water, be soluble in the organism such as ethanol, ether, benzene.Its stable chemical nature, self is difficult for degraded.Aniline belongs to important industrial chemicals, and in recent years, China becomes remarkable ascendant trend to the demand of aniline, has increased the possibility that aniline leaks; Aniline leakage accident hidden danger and potential hazard can not get enough attention, and the leakage accident that causes China to occur increases year by year, have brought unprecedented pressure to basic public security fire brigade rescue; Aniline has very high toxicity, once especially water body leakage is mishandling for leakage accident, by serious harm HUMAN HEALTH and surrounding environment.Once aniline leaks, situation is complicated and changeable, expects product from former, middlely all will experience the defeated of mode such as processing, storage and transport and turns, and the factors such as its friction, vibrations, extruding and humiture variation are all inevitable in whole process.To the emergency management and rescue of aniline leakage accident dispose require high, technical difficulty is large, give fire brigade's emergency management and rescue bring very big difficulty.In addition, aniline water body leakage accident often needs the many departments interlock cooperations such as correlation technique expert and public security, safety supervision efficiently to dispose.Make a general survey of in recent years, aniline water body leakage accident brings serious harm to the mankind and environment, and public security fire-fighting army does not have relatively independent emergency management and rescue prediction scheme to aniline leakage accident.Therefore study decontamination disposal technology after aniline water body leaks imperative, simultaneously also will dispose important data supporting and technical director will be provided for public security fire-fighting army emergency washing and disin fecting.
summary of the invention
Reveal for more effective processing aniline, the present invention has developed a kind of environment-friendly high-efficiency decontaminant.
The efficient decontaminant of a kind of aniline water body leakage environmental protection of the present invention, comprises iron catalyzer, hydrogen peroxide, deionized water.
Described iron catalyzer is divalent iron salt.
Iron catalyzer separates and deposits with hydrogen peroxide.
The using method of the efficient decontaminant of a kind of aniline water body leakage environmental protection of the present invention, comprises the following steps:
1), regulate aniline to leak pH=1～9 of water body with deionized water;
2), leak in water body and add iron catalyzer at the aniline that regulates pH, adding the concentration range of iron catalyzer after iron catalyzer is 1～30g/L, fully mixes, and obtains mixture;
3), in step 2) mixture in add hydrogen peroxide, adding the concentration range of hydrogen peroxide after hydrogen peroxide is 10～200mL/L, decontamination 30min.
The applicable envrionment temperature of using method of the efficient decontaminant of a kind of aniline water body leakage environmental protection is 0～50 DEG C, and concentration of aniline is 0～50000mg/L.
In the time of aniline 8000mg/L, the optimum condition of decontamination is: pH=4.5, and adding the concentration of iron catalyzer after iron catalyzer is 15g/L, and adding the concentration of hydrogen peroxide after hydrogen peroxide is 60mL/L, and envrionment temperature is 30 DEG C.
The efficient decontaminant of a kind of aniline water body leakage environmental protection of the present invention is first Fenton's reaction to be applied in dangerization product decontamination field.Grope by experiment Best, after decontamination condition optimizing, greatly delayed the decline process of aniline decontamination rate, and under the identical condition of aniline starting point concentration, after decontamination condition optimizing, decontamination efficiency improves greatly.
Brief description of the drawings
Fig. 1 is the impact of aniline starting point concentration on aniline decontamination rate;
Fig. 2 is the impact of pH value on aniline decontamination rate;
Fig. 3 is the impact of iron catalyzer add-on on aniline decontamination rate;
Fig. 4 is the impact of hydrogen peroxide add-on on aniline decontamination rate;
Fig. 5 is the impact of envrionment temperature on aniline decontamination rate;
Fig. 6 is the condition optimizing of aniline decontaminant decontamination aniline.
Embodiment
Following examples are for further explaining the present invention.
Embodiment 1:
1), at 20 DEG C, with deionized water compound concentration be 10000mg/L aniline solution, be modeled to aniline leak water sample, get 20mL aniline leak water sample regulate pH=4.5;
2), in leaking water body, the aniline that regulates pH adds 0.1g FeSO
4.9H
2o, fully mixes, and obtains mixture;
3), in step 2) mixture in add H
2o
21mL, decontamination 30min.
Embodiment 2:
1), at 30 DEG C, with deionized water compound concentration be 8000mg/L aniline solution, be modeled to aniline leak water sample, get 20mL aniline leak water sample regulate pH=5.5;
2), in leaking water body, the aniline that regulates pH adds 0.1g Fecl
2, fully mix, obtain mixture;
3), in step 2) mixture in add H
2o
20.5mL, decontamination 30min.
Embodiment 3:
1), at 20 DEG C, with deionized water compound concentration be 6000mg/L aniline solution, be modeled to aniline and leak water sample, get 20mL aniline and leak water sample and regulate aniline to leak the pH=3 of water body;
2), in leaking water body, the aniline that regulates pH adds 0.05g FeSO
4.9H
2o, fully mixes, and obtains mixture;
3), in step 2) mixture in add H
2o
20.5mL, decontamination 30min.
Experimental example:
The relation of aniline starting point concentration and aniline decontamination rate
Get the aniline stock solution of different volumes, the aniline solution of preparation different concns, is modeled to aniline and leaks water sample.Regulate the pH=3 of each aniline solution with deionized water, get the each 20mL of aniline leakage water sample and be placed in reaction unit, add the FeSO of 0.3g
4.9H
2o, the H of 1mL
2o
2, stirring reaction 30min under normal temperature, termination reaction.System after decontamination is stopped is placed in centrifuge tube, after the centrifugal 5min of 4000r/min, gets 0.25mL supernatant liquor, with the naphthodiamide azo method 30min that adds lustre to, does reference with blank sample, carries out spectrophotometry detection.When rear different aniline starting point concentration is disposed in decontamination, the decontamination rate of aniline is shown in Fig. 1.
As can be seen from the figure,, when decontamination aniline, decontamination rate reduces gradually with the increase of aniline starting point concentration.Roughly there are three plateaus.Aniline starting point concentration during lower than 2000mg/L, is the first platform, the aniline leaking in can completely decontamination system under this condition.Known according to the kinetic parameter of reaction, under this stage, aniline is preferentially completely degraded, and aniline starting point concentration is lower, and the mineralization degree of aniline is higher, and in system, the intermediate of degrading aniline is residual fewer.Aniline starting point concentration belongs to the second platform while being 3000mg/L～6000mg/L, now aniline decontamination rate is stabilized in 99% left and right, in the time that concentration of aniline is greater than 6000mg/L, aniline decontamination rate significantly declines, during to 10000mg/L, stop declining, concentration of aniline is the 3rd platform in 10000mg/L～14000mg/L scope, decontamination rate approximately 92% left and right of this one-phase aniline, and starting point concentration is greater than decontamination rate less than 90% after 15000mg/L.
The relation of pH value and aniline decontamination rate
Fixing aniline decontamination system starting point concentration is 8000mg/L, the each 20mL of decontamination system, FeSO
4.9H
2o adds respectively 0.1g, H
2o
2add respectively 1mL, decontamination 30min under normal temperature condition, the pH value of change aniline simulated leakage system, carries out decontamination experiment, detects with naphthodiamide azo method through pre-treatment, and while calculating different pH value, the decontamination rate of aniline, the results are shown in Figure 2.
As can be seen from the figure,, when decontamination 8000mg/L aniline, the decontamination rate of aniline, with the increase of pH value, first raises and reduces afterwards.There is obvious plateau at 2～5.5 o'clock in pH, aniline decontamination rate is higher, all reaches more than 99%, and when pH<2 and pH>5.5, aniline decontamination rate is dropped rapidly to below 90%.Therefore when decontamination aniline, it is 2～5.5 more suitable that pH value is selected.
The relation of iron catalyzer add-on and aniline decontamination rate
Fixing aniline starting point concentration is 8000mg/L, the each 20mL of decontamination system, decontamination pH=3, H
2o
2add respectively 1mL, decontamination 30min under normal temperature condition, the FeSO of change aniline simulated leakage system
4.9H
2o add-on, carries out decontamination experiment, after pre-treatment, detects with naphthodiamide azo method, obtains different FeSO
4.9H
2when O add-on, the decontamination rate of aniline is shown in Fig. 3.
As can be seen from Figure 3, when decontamination aniline, decontamination rate is with FeSO
4.9H
2the increase of O add-on, first raises rapidly, rear slow decreasing.FeSO
4.9H
2when O adds 0.1g, aniline decontamination rate 99.75%, approaches 100%.Work as FeSO
4.9H
2when O adds not enough 0.1g, decontamination rate significantly declines.FeSO
4.9H
2o adds the aniline decontamination rate of 0.025g less than 96%.Work as FeSO
4.9H
2o adds while exceeding 0.1g, and aniline decontamination rate slightly declines on the contrary.Requirement and economic benefit, FeSO are disposed in the decontamination that considers public security fire-fighting army
4.9H
2o add-on should select 0.1g left and right to be advisable.
The relation of hydrogen peroxide add-on and aniline decontamination rate
Fixing aniline starting point concentration is 8000mg/L, the each 20mL of decontamination system, decontamination pH=3, FeSO
4.9H
2o respectively adds 0.1g, under normal temperature condition, reacts 30min, changes the H of aniline simulated leakage system
2o
2add-on, carries out decontamination experiment, detects with naphthodiamide azo method through pre-treatment, obtains different H
2o
2when add-on, the decontamination rate of aniline, the results are shown in Figure 4.
As can be seen from Figure 4, when decontamination aniline, aniline decontamination rate is with H
2o
2increasing of add-on, raises rapidly, H
2o
2when add-on 1.0mL, aniline decontamination rate reaches 99.57%, substantially approaches 100%.H
2o
2consumption continues to increase again, and decontamination rate is without obvious improve, and decontamination rate approaches 100% gradually.Work as H
2o
2when add-on is less than 1.0mL, along with H
2o
2the increase of add-on, the rapid straight line of aniline decontamination rate rises.H
2o
2while adding 1.0mL, system reaction reaches balance, and each amounts of components is all more suitable, the aniline in now can efficiently decontamination system.H
2o
2consumption continues to increase again, and aniline decontamination rate continues higher stablely to approach 100%.Now showing as decontaminant organic intermediate to the permineralization of further degrading is CO
2and H
2o.
The relation of envrionment temperature and aniline decontamination rate
Fixing aniline starting point concentration is 8000mg/L, the each 20mL of decontamination system, and decontamination pH=3, FeSO4.9H2O respectively adds 0.1g, and reaction unit is placed in to waters constant temperature blender with magnetic force, continues stirring until system temperature constant under differing temps, adds respectively the H of 1mL
2o
2, at varying environment temperature, react 30min, complete decontamination experiment, with spectrophotometry detection, while obtaining varying environment temperature, the decontamination rate of aniline is shown in Fig. 5.
Any chemical reaction all can be subject to the impact of temperature, and during with aniline decontaminant decontamination aniline, envrionment temperature has remarkably influenced to aniline decontamination rate.In certain temperature range, the rising of envrionment temperature is conducive to the carrying out of decontamination.As can be seen from Figure 5, aniline decontamination rate first improves rear reduction with the rising of envrionment temperature.When envrionment temperature is 25 DEG C, aniline decontamination rate is the highest, reaches 99.82%, substantially approaches 100%.Envrionment temperature is during lower than 25 DEG C, and aniline decontamination rate slowly raises, but totally all more than 99%.Envrionment temperature is during higher than 25 DEG C, and aniline decontamination rate slowly reduces.When envrionment temperature is greater than after 50 DEG C, aniline decontamination rate declines rapidly.
Orthogonal experiment when aniline starting point concentration is 8000mg/L
Aniline starting point concentration is under 8000mg/L condition, selects L
16(4
5) orthogonal design table contrived experiment, determine that according to experiment of single factor level of factor that orthogonal experiment adopts is in table 1.
The orthogonal table of table 1 aniline decontaminant decontamination aniline
Selected level value is pressed to orthogonal array L
16(4
5) in 1～4 row be designed to orthogonal experiment.Orthogonal experiment results when gained aniline starting point concentration is 8000mg/L is in table 2.
The orthogonal experiment scheme table of table 2 aniline decontaminant decontamination aniline
According to the orthogonal experiment scheme table of table 2, analyze experimental result, obtain range analysis and the results are shown in Table 3.
The orthogonal experiment range analysis table of table 3 aniline decontaminant decontamination aniline
Can find out R from the range analysis table of orthogonal experiment
3>R
4>R
2>R
1.When this shows with aniline decontaminant decontamination aniline, each empirical factor is to descending being followed successively by of aniline decontamination rate influence degree: H
2o
2add-on, envrionment temperature, FeSO
4.9H
2o add-on, pH value.What wherein decontamination rate was the highest is combined as A
3b
3c
4d
3, therefore, can determine decontamination 8000mg/L aniline time, the top condition of decontamination is: pH=4.5, FeSO
4.9H
2o consumption 0.3g, H
2o
2consumption 1.2mL, envrionment temperature is selected 30 DEG C.
Aniline decontamination experiment under optimal conditions
Before condition optimizing: the aniline solution of preparation different concns is modeled to aniline and leaks water sample.Regulating sample pH value=3, error is no more than ± and 0.05.Each water sampling 20mL is placed in reaction unit, and magnetic agitation is even, adds 0.3g FeSO
4.9H
2o, is stirred to abundant dissolving, continues to add the H of 1mL in system
2o
2, stirring reaction 30min under normal temperature, termination reaction completes decontamination experiment.After pre-treatment, with the naphthodiamide azo method 30min that adds lustre to, carry out spectrophotometry detection.
After condition optimizing: the aniline solution of preparing each concentration is modeled to aniline and leaks water sample.Regulating sample pH value=4.5, error is no more than ± and 0.05.Each water sampling 20mL is placed in reaction unit, and magnetic agitation is even, adds respectively the FeSO of 0.3g
4.9H
2o, is stirred to abundant dissolving, reaction unit is placed in to constant temperature water bath magnetic stirring apparatus and fully stirs, and in the time that the envrionment temperature of system stabilizes to 30 DEG C, in system, adds 1.2mLH
2o
2, after stirring reaction 30min, termination reaction completes decontamination experiment.After pre-treatment, with the naphthodiamide azo method 30min that adds lustre to, carry out spectrophotometry detection.The decontamination rate of aniline under two kinds of decontamination conditions, as Fig. 6.
As can be seen from Figure 6, before condition optimizing, roughly there are three plateaus in the decontamination rate of aniline, and when aniline starting point concentration is less than 2000mg/L, aniline decontamination rate can reach 100%; When 3000mg/L～6000mg/L, decontamination rate is stable at 99% left and right; Then aniline decontamination rate declines rapidly, again stable to 10000mg/L, now decontamination rate approximately 92%.After decontamination condition optimizing, greatly delayed the decline process of aniline decontamination rate, when aniline starting point concentration is 0～8000mg/L, aniline decontaminant is the aniline in decontamination simulated leakage water sample thoroughly, reaches thoroughly decontamination requirement efficiently.When aniline starting point concentration 8000mg/L～10000mg/L, decontamination rate is in a slight decrease, is reduced to 98%, approximately two percentage points from 100%.Under the identical condition of aniline starting point concentration, after decontamination condition optimizing, decontamination efficiency improves greatly.
Claims (6)
1. the efficient decontaminant of aniline water body leakage environmental protection, is characterized in that: comprise iron catalyzer, hydrogen peroxide, deionized water.
2. according to the efficient decontaminant of a kind of aniline water body leakage environmental protection of claim 1, it is characterized in that: described iron catalyzer is divalent iron salt.
3. according to the efficient decontaminant of a kind of aniline water body leakage environmental protection of claim 1, it is characterized in that: iron catalyzer separates and deposits with hydrogen peroxide.
4. a using method for the efficient decontaminant of aniline water body leakage environmental protection, is characterized in that comprising the following steps:
1), regulate aniline to leak pH=1～9 of water body with deionized water;
2), leak in water body and add iron catalyzer at the aniline that regulates pH, adding the concentration range of iron catalyzer after iron catalyzer is 1～30g/L, fully mixes, and obtains mixture;
3), in step 2) mixture in add hydrogen peroxide, adding the concentration range of hydrogen peroxide after hydrogen peroxide is 10～200mL/L, decontamination 30min.
5. according to the using method of the efficient decontaminant of a kind of aniline water body leakage environmental protection of claim 4, it is characterized in that the applicable envrionment temperature of described using method is 0～50 DEG C, concentration of aniline is 0～50000mg/L.
6. according to the using method of the efficient decontaminant of a kind of aniline water body leakage environmental protection of claim 4, it is characterized in that in the time of aniline 8000mg/L, the optimum condition of decontamination is: pH=4.5, adding the concentration of iron catalyzer after iron catalyzer is 15g/L, adding the concentration of hydrogen peroxide after hydrogen peroxide is 60mL/L, and envrionment temperature is 30 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709363A (en) * | 2016-04-29 | 2016-06-29 | 中国科学技术大学 | Aniline leakage emergency treatment agent |
| CN111494870B (en) * | 2020-03-18 | 2021-11-19 | 中国人民解放军陆军防化学院 | Disinfection method |
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| US20100219372A1 (en) * | 2007-08-23 | 2010-09-02 | Bruce Hook | Brine purification |
| CN103420475A (en) * | 2013-09-11 | 2013-12-04 | 天津天雷科技有限公司 | Method for treating organic wastewater containing aniline through Fenton catalytic degradation reaction |
| CN203319802U (en) * | 2013-06-14 | 2013-12-04 | 厦门市威士邦膜科技有限公司 | Water treatment equipment adopting three-dimension electrode-Fenton reactor combination membrane technology |
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2014
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| US20100219372A1 (en) * | 2007-08-23 | 2010-09-02 | Bruce Hook | Brine purification |
| CN203319802U (en) * | 2013-06-14 | 2013-12-04 | 厦门市威士邦膜科技有限公司 | Water treatment equipment adopting three-dimension electrode-Fenton reactor combination membrane technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709363A (en) * | 2016-04-29 | 2016-06-29 | 中国科学技术大学 | Aniline leakage emergency treatment agent |
| CN105709363B (en) * | 2016-04-29 | 2019-06-21 | 中国科学技术大学 | A kind of aniline leakage emergency disposal agent |
| CN111494870B (en) * | 2020-03-18 | 2021-11-19 | 中国人民解放军陆军防化学院 | Disinfection method |
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Application publication date: 20140723 |