CN109110903A - A kind of processing method of water body intermediate ion liquid - Google Patents
A kind of processing method of water body intermediate ion liquid Download PDFInfo
- Publication number
- CN109110903A CN109110903A CN201811118186.5A CN201811118186A CN109110903A CN 109110903 A CN109110903 A CN 109110903A CN 201811118186 A CN201811118186 A CN 201811118186A CN 109110903 A CN109110903 A CN 109110903A
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- Prior art keywords
- ionic liquid
- processing method
- water body
- redox reaction
- persulfate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention provides a kind of processing methods of water body intermediate ion liquid, comprising the following steps: persulfate is added into the water body containing ionic liquid and carries out redox reaction under heating conditions.The present invention carries out redox reaction to the ionic liquid in water body using persulfate as oxidant, using the oxidability of potentiometric titrations, make ionic liquid fast degradation carbon dioxide, not only removal efficiency is high, and the toxicity of intermediate product is lower, will not generate secondary pollution.The result shows that being can be achieved in 3~8 hours according to technical solution provided by the invention by the degradable of the 1- butyl -3- methylimidazole bromide of 21.9mg/L.
Description
Technical field
The invention belongs to technical field of waste water processing more particularly to a kind of processing methods of water body intermediate ion liquid.
Background technique
Ionic liquid is a kind of novel green solvent, has non-volatile, low melting point, wide liquid journey, strong electrostatic field, wide electricity
It the features such as chemical window, good thermal conductivity and thermal stability, designability, is widely applied to organic synthesis, urges
The fields such as change, separation, electrochemistry, biochemistry.Ionic liquid includes imidazoles, pyridines, quaternary ammonium salt, quaternary alkylphosphonium salt at present
About more than 2000 kinds of class, guanidine etc., the production of most of ionic liquid initial industrial.
From the perspective of industrialization, in addition to it should be understood that ionic liquid excellent performance, should also comprehensively consider and to it
Carry out environmental risk assessment.Researcher's discovery, some ionic liquids, such as imidazoles, pyridines, to algae, microorganisms in water, terrestrial
Biology and mammal have apparent toxic action, significantly inhibit to key enzymes some in human body, and have
Potential mutagenicity and carcinogenicity.It is industrializing on the way, is encountering accidental release unavoidably, generates the waste water and dregs containing ionic liquid
Situations such as.Therefore the home to return to for understanding ionic liquid, visits clear ionic liquid degradation approach, finds practical and efficient ionic liquid degradation
Method, which is one, cannot be neglected important process.Therefore the degradation problem for studying ionic liquid, not only can be ionic liquid work
Industryization provides reference data, can also promote the theoretical developments of environment pollutant process technology.
Biodegrade, advanced oxidation degradation and electrochemistry are concentrated mainly on about the correlative study of ionic liquid degradation at present
Degradation aspect.Although biodegrade has, Environmental compatibility is good, low power consumption and other advantages, it is many studies have shown that biodegrade from
The efficiency of sub- liquid is very low, and ionic liquid cannot can not even be degraded by thorough degradation；Electrochemical degradation method can efficiently drop
Ionic liquid is solved, but harmful substance can be generated during cell reaction, generates secondary pollution；For advanced oxidation processes degrade from
Sub- liquid research is more deep, but researcher usually attempts to increase plus compounds such as metal onidiges in the condition of tradition degradation
Add degradation efficiency, is also also easy to produce secondary pollution.Therefore, low, high-efficient, the more environmentally protective biodegrading process of development cost is mesh
Preceding research hotspot.
Summary of the invention
In view of this, the present invention provides the purpose of the present invention is to provide a kind of processing method of water body intermediate ion liquid
Method it is higher to the ionic liquid removal efficiency in water, and secondary pollution will not be generated.
The present invention provides a kind of processing methods of water body intermediate ion liquid, comprising the following steps:
Persulfate is added into the water body containing ionic liquid and carries out redox reaction under heating conditions.
The present invention carries out redox reaction to the ionic liquid in water body using persulfate as oxidant, keeps it final
It is degraded to carbon dioxide, not only removal efficiency is high, and will not generate secondary pollution.By taking 1- butyl -3- methylimidazole bromide as an example,
As shown in FIG. 1, FIG. 1 is ionic liquid degradation mechanism provided by the invention for its mechanism of degradation.1- butyl -3- methylimidazole sun from
Son Major degradation pathways under potentiometric titrations effect are the oxidative degradation of side chain, and then carry out the degradation of imidazole ring, finally
Mineralising is CO2；And use the biodegrading process of traditional Fenton, then trioxy- compound is mainly generated, this makes the poison of intermediate product
Property increase.
In one embodiment of the invention, the ionic liquid is selected from imidazole salt ionic liquid, pyridines ionic liquid
One of body and quaternary ammonium salts ionic liquid are a variety of.
In one embodiment of the invention, the ionic liquid is selected from 1- butyl -3- methylimidazole bromide.
In one embodiment of the invention, the persulfate is in sodium peroxydisulfate, potassium peroxydisulfate and persulfuric acid calcium
It is one or more.
In one embodiment of the invention, the persulfate is selected from potassium peroxydisulfate.
In one embodiment of the invention, the temperature of the heating is 30 DEG C~60 DEG C, the redox reaction
Time is 3h~8h.
In one embodiment of the invention, the pH value of the redox reaction is 5 or more.
In one embodiment of the invention, the molar ratio of the ionic liquid and the over cure acid group in persulfate is 1:
(100~10).
The present invention carries out redox reaction to the ionic liquid in water body using persulfate as oxidant, utilizes sulfuric acid
The oxidability of root free radical makes ionic liquid fast degradation carbon dioxide, and not only removal efficiency is high, and the poison of intermediate product
Property is lower, will not generate secondary pollution.The result shows that can be achieved in 3~8 hours according to technical solution provided by the invention
By the degradable of the 1- butyl -3- methylimidazole bromide of 21.9mg/L.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is ionic liquid degradation mechanism provided by the invention；
Fig. 2 is that BMimBr changes over time curve in the embodiment of the present invention 1~4；
Fig. 3 is that BMimBr changes over time curve in the embodiment of the present invention 5~8；
Fig. 4 is that BMimBr changes over time curve in the embodiment of the present invention 9~12；
Fig. 5 is concentration and initial concentration ratio after TOC processing in embodiment 9~12.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Examples 1 to 4
By the sodium peroxydisulfate of the 20mM of 50mL, the 1- butyl -3- methylimidazole bromide (BMimBr) of the 2mM of 5mL and
The phosphate buffer salt of the 20mM of 10mL mixes, and adds water to be made into 100mL solution, is added in 250mL wide-mouth bottle, adjusts pH=7,
5h is reacted in 30 DEG C, 40 DEG C, 50 DEG C, 60 DEG C of water-bath respectively, that is, completes the removal to BMimBr, wherein BMimBr's is dense
Degree is measured by liquid chromatogram.Test result is shown in that Fig. 2, Fig. 2 are that BMimBr changes over time curve in the embodiment of the present invention 1~4, by
Fig. 2 is it is found that the removal rate of BMimBr is respectively 30%, 60%, 98%, 100% in Examples 1 to 4.
Embodiment 5~8
By the sodium peroxydisulfate of the 20mM of 50mL, the 1- butyl -3- methylimidazole bromide (BMimBr) of the 2mM of 5mL and
The phosphate buffer salt of the different pH of the 20mM of 10mL mixes, and adds water to be made into 100mL solution, is added in 250mL wide-mouth bottle.Its
In, the pH of phosphate buffer salt is respectively 3,5,7,10, and adjusts concentration to 20mM.2h is reacted in 60 DEG C of water-bath, i.e.,
The removal to BMimBr is completed, wherein the concentration of BMimBr is measured by liquid chromatogram.Test result is shown in that Fig. 3, Fig. 3 are that the present invention is real
It applies BMimBr in example 5~8 and changes over time curve, from the figure 3, it may be seen that the removal rate of BMimBr is respectively in embodiment 5~8
65%, 90%, 100%, 100%.
Embodiment 9~12
Respectively by the sodium peroxydisulfate of the 20mM of 5mL, 10mL, 25mL, 50mL and the 1- butyl -3- methyl miaow of the 2mM of 5mL
The phosphate buffer salt of the 200mM of azoles bromide (BMimBr) and 10mL mix, and add water to be made into the solution of 100mL, are added to
In 250mL wide-mouth bottle, sodium peroxydisulfate concentration is respectively 1mM, 2mM, 5mM, 10mM.PH=7 is adjusted, it is anti-in 60 DEG C of water-bath
2h is answered, that is, completes the removal to BMimBr, wherein the concentration of BMimBr is measured by liquid chromatogram.Test result is shown in that Fig. 4, Fig. 4 are
BMimBr changes over time curve in the embodiment of the present invention 9~12, as shown in Figure 4, the removal rate of BMimBr in embodiment 9~12
Respectively 62%, 86%, 97%, 100%.The test of TOC is carried out after reaction 5h respectively, test result such as Fig. 5, Fig. 5 are to implement
Concentration and initial concentration ratio after TOC is handled in example 9~12, as shown in Figure 5, method provided by the invention does not generate secondary dirt
Dye.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of processing method of water body intermediate ion liquid, comprising the following steps:
Persulfate is added into the water body containing ionic liquid and carries out redox reaction under heating conditions.
2. processing method according to claim 1, which is characterized in that the ionic liquid is selected from imidazole salt ionic liquid
One of body, pyridine ionic liquid and quaternary ammonium salts ionic liquid are a variety of.
3. processing method according to claim 2, which is characterized in that the ionic liquid is selected from 1- butyl -3- methyl miaow
Azoles bromide.
4. processing method according to any one of claims 1 to 3, which is characterized in that the persulfate is selected from over cure
One of sour sodium, potassium peroxydisulfate and persulfuric acid calcium are a variety of.
5. processing method according to any one of claims 1 to 3, which is characterized in that the temperature of the heating is 30 DEG C
~60 DEG C, the time of the redox reaction is 3h~8h.
6. processing method according to claim 5, which is characterized in that the pH value of the redox reaction is 5 or more.
7. processing method according to any one of claims 1 to 3, which is characterized in that the ionic liquid and persulfuric acid
The molar ratio of over cure acid group in salt is 1:(100~10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811118186.5A CN109110903A (en) | 2018-09-18 | 2018-09-18 | A kind of processing method of water body intermediate ion liquid |
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| CN201811118186.5A CN109110903A (en) | 2018-09-18 | 2018-09-18 | A kind of processing method of water body intermediate ion liquid |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7119937B2 (en) * | 2002-06-21 | 2006-10-10 | The Regents Of The University Of California | Durable electrooptic devices comprising ionic liquids |
| CN103979664A (en) * | 2014-06-03 | 2014-08-13 | 武汉纺织大学 | Method for activating persulphate by OMS (Octahedral Molecular Sieve)-2 to degrade organic wastewater |
| CN104828900A (en) * | 2015-06-05 | 2015-08-12 | 广西大学 | Method for using photocatalytic reduction to treat waste water containing nitroimidazole antibiotics |
| CN106630102A (en) * | 2017-01-17 | 2017-05-10 | 武汉纺织大学 | Application and method of degrading organic wastewater with Ce-OMS-2 catalyst |
| CN106865733A (en) * | 2017-04-26 | 2017-06-20 | 中国环境科学研究院 | The minimizing technology of 1,4 dioxanes in a kind of water body |
| CN206308237U (en) * | 2016-12-29 | 2017-07-07 | 绵阳迪澳药业有限公司 | It is a kind of to process the device containing pyridine waste water |
| WO2018053630A1 (en) * | 2016-09-20 | 2018-03-29 | National Research Council Of Canada | Ferro-cavitation processes for target metal separation |
-
2018
- 2018-09-18 CN CN201811118186.5A patent/CN109110903A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7119937B2 (en) * | 2002-06-21 | 2006-10-10 | The Regents Of The University Of California | Durable electrooptic devices comprising ionic liquids |
| CN103979664A (en) * | 2014-06-03 | 2014-08-13 | 武汉纺织大学 | Method for activating persulphate by OMS (Octahedral Molecular Sieve)-2 to degrade organic wastewater |
| CN104828900A (en) * | 2015-06-05 | 2015-08-12 | 广西大学 | Method for using photocatalytic reduction to treat waste water containing nitroimidazole antibiotics |
| WO2018053630A1 (en) * | 2016-09-20 | 2018-03-29 | National Research Council Of Canada | Ferro-cavitation processes for target metal separation |
| CN206308237U (en) * | 2016-12-29 | 2017-07-07 | 绵阳迪澳药业有限公司 | It is a kind of to process the device containing pyridine waste water |
| CN106630102A (en) * | 2017-01-17 | 2017-05-10 | 武汉纺织大学 | Application and method of degrading organic wastewater with Ce-OMS-2 catalyst |
| CN106865733A (en) * | 2017-04-26 | 2017-06-20 | 中国环境科学研究院 | The minimizing technology of 1,4 dioxanes in a kind of water body |
Non-Patent Citations (3)
| Title |
|---|
| PATI.SARAH G等: "Reaction rates and product formation during advanced oxidation of ionic liquid cations by UV/peroxide, UV/persulfate, and UV/chlorine", 《ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY》 * |
| 刘希涛等: "《活化过硫酸盐在环境污染控制中的应用》", 30 April 2018, 中国环境出版社 * |
| 宋化民等: "《环境管理基础及管理体系标准教程》", 31 October 2011, 中国地质大学出版社有效公司 * |
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