CN105399179A - A method of removing ionic liquid in a water body by activated carbon adsorption promoted by utilization of phosphates - Google Patents
A method of removing ionic liquid in a water body by activated carbon adsorption promoted by utilization of phosphates Download PDFInfo
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- CN105399179A CN105399179A CN201510909745.4A CN201510909745A CN105399179A CN 105399179 A CN105399179 A CN 105399179A CN 201510909745 A CN201510909745 A CN 201510909745A CN 105399179 A CN105399179 A CN 105399179A
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Abstract
The invention relates to a method of removing ionic liquid in a water body by activated carbon adsorption promoted by utilization of phosphates, and belongs to the field of water pollution control. The method includes adding the phosphates into the water body containing the ionic liquid, fully mixing, dissolving, adsorbing the ionic liquid in the water body by using activated carbon, after adsorption balance or adsorption saturation is achieved, eluting the ionic liquid by using an acid eluant firstly, and adjusting the pH of the activated carbon to be slightly alkaline again by using an alkaline solution so that the activated carbon can be reutilized in the next time of adsorption. Compared with the prior art, the ionic liquid removing capability of the activated carbon by adsorption is significantly improved by utilization of the phosphates. The method is free of extra operation and treatment, the adsorption removing effect for the ionic liquid is greatly improved, the activated carbon can be reutilized for a plurality of times, and the method has a good popularization and application prospect.
Description
Technical field
The present invention relates to a kind of ionic liquid treatment process, especially relate to a kind of method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid, belong to field of water pollution control.
Background technology
Ionic liquid refers to and is at room temperature in a liquid state, the fused salt compound be made up of zwitterion completely.It has difficult volatilization, stable to water and air, to features such as many kinds of substance solubility property are superior, be therefore called as " green solvent ", be widely used in the fields such as chemical industry, medicine, biotechnology, agricultural and food.The ionic liquid of entered environment water body is not easily degraded by Institute of Micro-biology, all has certain toxicity to animal, plant and microorganism.Therefore, rationally effective disposal must be carried out to the ionic liquid contained in industrial water body.
Mainly contain two class methods to the treatment measures of ionic liquid solution at present, a class destroys the structure of ionic liquid, ionic liquid changed into other small molecules that is harmless or low toxicity.Related measure comprises pyrolysis, chemical oxidation and biological treatment etc.; These class methods can not carry out resource reclaim effectively to the ionic liquid in water body.Another kind of method is that ionic liquid is carried out effective Separation and Recovery from water body, and major measure comprises underpressure distillation, crystallization, extraction and absorption etc.Wherein, the method for underpressure distillation, crystallization and extraction is also not suitable for processing the water body containing ionic liquid on a large scale.Therefore, absorption is the method for recommending.Although there is at present the bibliographical information adopting charcoal absorption process ionic liquid water body, the ability of charcoal absorption ionic liquid is general very low, if with prior art parameter in addition industrial application, processing cost will be caused to remain high.
Summary of the invention
What the present invention needed solution is ionic liquid (particularly hydrophilic ionic-liquid) problem that adsorptive capacity is not high on the activated carbon.Main improving one's methods improves activated carbon dosage to increase at present, and this will cause processing cost to promote.The present invention, by adding a small amount of phosphoric acid salt in water body, under the condition not changing other technical parameter, can achieve the remarkable lifting of gac to ionic liquid adsorptive power.
Object of the present invention can be achieved through the following technical solutions:
The method of water body intermediate ion liquid is removed in charcoal absorption to utilize phosphoric acid salt to promote, adds phosphoric acid salt, fully mix and dissolve to containing in the water body of ionic liquid; With the ionic liquid in charcoal absorption water body, reach adsorption equilibrium or adsorb saturated after, first use acidic elution agent elution ionic liquid, then with basic solution readjustment gac pH to the weakly alkaline being greater than 8.0, gac be re-used in next round absorption.
Ionic liquid in water body comprise glyoxaline ion liquid, pyridine ionic liquid, quaternary ammonium ionic liquid, season phosphine class ionic liquid, pyrrolidines ionic liquid or piperidines ionic liquid.
Described phosphoric acid salt comprises sodium phosphate, potassiumphosphate or ammonium phosphate.
After adding phosphoric acid salt, in water body, the ratio of phosphatic volumetric molar concentration and ionic liquid volumetric molar concentration maintains in the scope of 1/500 to 1/50.
Described acidic elution agent comprises hydrochloric acid or the sulphuric acid soln of pH=1-3.
Described basic solution comprises sodium hydroxide or the potassium hydroxide aqueous solution of pH=11-13.
The mode of the ionic liquid in charcoal absorption water body is static equilibrium absorption mode or dynamic column absorption mode.
Static equilibrium absorption mode is: add a small amount of phosphoric acid salt to a certain amount of containing in the water body of ionic liquid, add the gac of certain mass further, abundant vibration makes charcoal absorption ionic liquid reach balance, by activated carbon filtration take out, insert in acidic elution agent, the ionic liquid be tightly held by activated carbon by desorption in acidic elution agent, then gac is taken out from acidic elution agent, be placed in basic solution, gac pH is adjusted to weakly alkaline, gac is reused.
Dynamic column absorption mode is: the gac of filling certain mass in cylinder, under stable flow conditions, post absorption is carried out with flowing through gac packed column containing ionic liquid and a small amount of phosphatic water body, after absorption reaches capacity, water body is drained, with 1 bed volume acidic elution agent wash-out adsorption column, use the distilled water wash-out adsorption column of 1 bed volume again, it is complete that ionic liquid reaches desorption, use the basic solution drip washing adsorption column of 1 bed volume further, gac pH is recalled to weakly alkaline, gac is reused.
The adsorption conditions of static equilibrium absorption mode or dynamic column absorption mode can with reference to conventional activated carbon absorbing process.
Principle of the present invention is: three valent phosphors hydrochlorate has salting-out effect, by the water molecules of the free solvent of the strong hydration of electrostatic interaction, thus can effectively reduce the hydration of water molecules and ionic liquid, and then reduce the solubleness of water body intermediate ion liquid.
Compared with prior art, the present invention only need add a small amount of phosphate solution in water body, just greatly can promote that gac is to the adsorption effect of ionic liquid, with low cost, Be very effective.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
Sodium phosphate promotes gac Static Adsorption ionic liquid (1-ethyl-3-methylimidazole a tetrafluoro borate)
[adding sodium phosphate experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a small amount of sodium phosphate, after stable, the concentration of sodium phosphate is 0.01mmol/L.Add further a certain amount of powder merchandise active carbon vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 40.6mg/g.Insert in the hydrochloric acid soln of pH=1,1-ethyl-3-methylimidazole a tetrafluoro borate can by the complete desorption of acid solution.Gac is placed in the aqueous sodium hydroxide solution of pH=13, gac pH can be adjusted to the weakly alkaline of 10.Gac is repeatedly reusable.
[not adding sodium phosphate contrast experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a certain amount of powder merchandise active carbon, vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 16.2mg/g, then gac is taken out, clean with distilled water.Insert in the hydrochloric acid soln of pH=1, the whole desorption of ionic liquid of absorption is in acid solution.
Relatively add the adsorptive capacity of gac before and after sodium phosphate, add front and back gac and about 2.5 times are promoted to the adsorptive capacity of ionic liquid, prove that phosphoric acid salt effectively can promote that gac is to the absorption of ionic liquid.
Embodiment 2:
Ammonium phosphate promotes gac Static Adsorption ionic liquid (N-butyl-3-picoline hexafluorophosphate)
[adding ammonium phosphate experiment] concrete steps are: in the N-butyl-3-picoline phosphofluoric acid salt brine solution of pending 1mmol/L, add a small amount of ammonium phosphate, after stable, the concentration of ammonium phosphate is 0.01mmol/L.Add a certain amount of powder merchandise active carbon vibration 24h further, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to N-butyl-3-picoline hexafluorophosphate is 56.6mg/g.Insert in the sulphuric acid soln of pH=1, N-butyl-3-picoline hexafluorophosphate can by the complete desorption of acid solution.Gac is placed in the potassium hydroxide aqueous solution of pH=13, gac pH can be adjusted to 9.5 weakly alkalines.Gac is repeatedly reusable.
[not adding ammonium phosphate contrast experiment] concrete steps are: in the N-butyl-3-picoline phosphofluoric acid salt brine solution of pending 1mmol/L, add a certain amount of powder merchandise active carbon, vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to N-butyl-3-picoline hexafluorophosphate is 29.0mg/g, then gac is taken out, clean with distilled water.Insert in the sulphuric acid soln of pH=1, the whole desorption of ionic liquid of absorption is in acid solution.
Relatively add the adsorptive capacity of gac before and after ammonium phosphate, add front and back gac and about 2.0 times are promoted to the adsorptive capacity of ionic liquid, prove that phosphoric acid salt effectively can promote that gac is to the absorption of ionic liquid.
Embodiment 3:
Activated carbon column dynamic adsorption ionic liquid (1-ethyl-3-methylimidazole hexafluorophosphate)
[adding potassiumphosphate experiment] concrete steps are: in the 1-ethyl-3-methylimidazole phosphofluoric acid salt brine solution of pending 1mmol/L, add a small amount of potassiumphosphate, after stable, the concentration of potassiumphosphate is 0.01mmol/L.Get 10g granulated active carbon and load internal diameter 1cm, the glass column of high 10cm.Under stable flow velocity under condition, above-mentioned solution stream is carried out post absorption through gac packed column, record reach absorption saturated accessible liquor capacity be 1600ml.Drained by solution in post, the hydrochloric acid soln adding 1 bed volume pH=1 carries out wash-out, then uses the distilled water wash-out adsorption column of 1 bed volume, and 1-ethyl-3-methylimidazole hexafluorophosphate can by complete desorption.Add the potassium hydroxide aqueous solution of 1 bed volume pH=13 again, gac pH can be adjusted to the weakly alkaline of 9.0.Gac is repeatedly reusable.
[not adding potassiumphosphate contrast experiment] concrete steps are: do not add potassiumphosphate, other process operation identical with [adding sodium phosphate to test], record reach adsorb saturated accessible liquor capacity be 500ml.
Relatively add solution-treated amount before and after phosphoric acid salt, adding the pre-treatment water yield is 500ml, and adding the aftertreatment water yield is 1600ml, and adsorption treatment amount promotes about 3.2 times.
Embodiment 4:
Activated carbon column dynamic adsorption ionic liquid (chlorination N-butyl-3-picoline)
[adding sodium phosphate experiment] concrete steps are: in the chlorination N-butyl-3-picoline aqueous solution of pending 1mmol/L, add a small amount of sodium phosphate, after stable, the concentration of sodium phosphate is 0.01mmol/L.Get 10g granulated active carbon and load internal diameter 1cm, the glass column of high 10cm.Under stable flow velocity under condition, above-mentioned solution stream is carried out post absorption through gac packed column, record reach absorption saturated accessible liquor capacity be 2000ml.Drained by solution in post, the sulphuric acid soln adding 1 bed volume pH=1 carries out wash-out, then uses the distilled water wash-out adsorption column of 1 bed volume, and N-butyl-3-picoline can by complete desorption.Add the aqueous sodium hydroxide solution of 1 bed volume pH=13 again, gac pH can be adjusted to the weakly alkaline of pH9.5.Gac is repeatedly reusable.
[not adding sodium phosphate contrast experiment] concrete steps are: do not add sodium phosphate, other process operation identical with [adding sodium phosphate to test], record reach adsorb saturated accessible liquor capacity be 600ml.
Relatively add solution-treated amount before and after phosphoric acid salt, adding the pre-treatment water yield is 600ml, and adding the aftertreatment water yield is 2000ml, and adsorption treatment amount promotes 3.3 times.
Embodiment 5
The method of water body intermediate ion liquid is removed in charcoal absorption to utilize phosphoric acid salt to promote,
Sodium phosphate promotes gac Static Adsorption ionic liquid (1-ethyl-3-methylimidazole a tetrafluoro borate)
[adding sodium phosphate experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a small amount of sodium phosphate, after stable, the concentration of sodium phosphate is 0.002mmol/L.Add further a certain amount of powder merchandise active carbon vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 28.8mg/g.Insert in the sulphuric acid soln of pH=3,1-ethyl-3-methylimidazole a tetrafluoro borate can by the complete desorption of acid solution.Gac is placed in the potassium hydroxide aqueous solution of pH=13, gac pH can be adjusted to the weakly alkaline of 10.Gac is repeatedly reusable.
[not adding sodium phosphate contrast experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a certain amount of powder merchandise active carbon, vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 16.2mg/g, then gac is taken out, clean with distilled water.Insert in the sulphuric acid soln of pH=3, the whole desorption of ionic liquid of absorption is in acid solution.
Relatively add the adsorptive capacity of gac before and after sodium phosphate, add front and back gac and about 1.8 times are promoted to the adsorptive capacity of ionic liquid, prove that phosphoric acid salt effectively can promote that gac is to the absorption of ionic liquid.
Embodiment 6
The method of water body intermediate ion liquid is removed in charcoal absorption to utilize phosphoric acid salt to promote,
Sodium phosphate promotes gac Static Adsorption ionic liquid (1-ethyl-3-methylimidazole a tetrafluoro borate)
[adding sodium phosphate experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a small amount of sodium phosphate, after stable, the concentration of sodium phosphate is 0.002mmol/L.Add further a certain amount of powder merchandise active carbon vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 50.5mg/g.Insert in the hydrochloric acid soln of pH=2,1-ethyl-3-methylimidazole a tetrafluoro borate can by the complete desorption of acid solution.Gac is placed in the aqueous sodium hydroxide solution of pH=12, gac pH can be adjusted to the weakly alkaline of 10.Gac is repeatedly reusable.
[not adding sodium phosphate contrast experiment] concrete steps are: in the 1-ethyl-3-methylimidazole Tetrafluoroboric acid salt brine solution of pending 1mmol/L, add a certain amount of powder merchandise active carbon, vibration 24h, upon adsorption reach balance after, recording the saturated extent of adsorption of gac to 1-ethyl-3-methylimidazole a tetrafluoro borate is 16.2mg/g, then gac is taken out, clean with distilled water.Insert in the hydrochloric acid soln of pH=2, the whole desorption of ionic liquid of absorption is in acid solution.
Relatively add the adsorptive capacity of gac before and after sodium phosphate, add front and back gac and about 3.1 times are promoted to the adsorptive capacity of ionic liquid, prove that phosphoric acid salt effectively can promote that gac is to the absorption of ionic liquid.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (9)
1. the method for water body intermediate ion liquid is removed in charcoal absorption to utilize phosphoric acid salt to promote, it is characterized in that,
Add phosphoric acid salt to containing in the water body of ionic liquid, fully mix and dissolve;
With the ionic liquid in charcoal absorption water body, reach adsorption equilibrium or adsorb saturated after, first use acidic elution agent elution ionic liquid, then with basic solution readjustment gac pH to the weakly alkaline scope being greater than 8.0, gac is re-used in next round absorption.
2. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, the ionic liquid in water body comprise glyoxaline ion liquid, pyridine ionic liquid, quaternary ammonium ionic liquid, season phosphine class ionic liquid, pyrrolidines ionic liquid or piperidines ionic liquid.
3. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, described phosphoric acid salt comprises sodium phosphate, potassiumphosphate or ammonium phosphate.
4. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, after adding phosphoric acid salt, in water body, the ratio of phosphatic volumetric molar concentration and ionic liquid volumetric molar concentration is 1/500 to 1/50.
5. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, described acidic elution agent comprises hydrochloric acid or the sulphuric acid soln of pH=1-3.
6. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, described basic solution comprises sodium hydroxide or the potassium hydroxide aqueous solution of pH=11-13.
7. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 1, it is characterized in that, the mode of the ionic liquid in charcoal absorption water body is static equilibrium absorption mode or dynamic column absorption mode.
8. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 7, it is characterized in that, static equilibrium absorption mode is: add a small amount of phosphoric acid salt to a certain amount of containing in the water body of ionic liquid, add the gac of certain mass further, abundant vibration makes charcoal absorption ionic liquid reach balance, activated carbon filtration is taken out, insert in acidic elution agent, the ionic liquid be tightly held by activated carbon by desorption in acidic elution agent, then gac is taken out from acidic elution agent, be placed in basic solution, gac pH is adjusted to the weakly alkaline being greater than 8.0, gac is reused.
9. the method utilizing phosphoric acid salt to promote charcoal absorption removal water body intermediate ion liquid according to claim 7, it is characterized in that, dynamic column absorption mode is: the gac of filling certain mass in cylinder, under stable flow conditions, post absorption is carried out with flowing through gac packed column containing ionic liquid and a small amount of phosphatic water body, after absorption reaches capacity, water body is drained, with 1 bed volume acidic elution agent wash-out adsorption column, use the distilled water wash-out adsorption column of 1 bed volume again, it is complete that ionic liquid reaches desorption, use the basic solution drip washing adsorption column of 1 bed volume further, gac pH is recalled to the weakly alkaline to being greater than 8.0, gac is reused.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052537A (en) * | 2018-07-26 | 2018-12-21 | 同济大学 | A method of water soluble ion liquid adsorption performance is promoted using ion-pair effect |
| CN109158083A (en) * | 2018-10-15 | 2019-01-08 | 西北师范大学 | A kind of preparation method and its usage of biomass-based carbon material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016176A (en) * | 2006-12-13 | 2007-08-15 | 辽宁大学 | Novel ionic liquid-inorganic salt-water double aqueous phase system |
| WO2012078783A2 (en) * | 2010-12-07 | 2012-06-14 | Texas State University-San Marcos | Immobilization of ionic liquids via mechnochemical intercalation in layered materials |
-
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- 2015-12-10 CN CN201510909745.4A patent/CN105399179B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016176A (en) * | 2006-12-13 | 2007-08-15 | 辽宁大学 | Novel ionic liquid-inorganic salt-water double aqueous phase system |
| WO2012078783A2 (en) * | 2010-12-07 | 2012-06-14 | Texas State University-San Marcos | Immobilization of ionic liquids via mechnochemical intercalation in layered materials |
Non-Patent Citations (1)
| Title |
|---|
| 曲玉萍等: "5种吸附剂对水中离子液体的吸附性能", 《环境工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052537A (en) * | 2018-07-26 | 2018-12-21 | 同济大学 | A method of water soluble ion liquid adsorption performance is promoted using ion-pair effect |
| CN109158083A (en) * | 2018-10-15 | 2019-01-08 | 西北师范大学 | A kind of preparation method and its usage of biomass-based carbon material |
| CN109158083B (en) * | 2018-10-15 | 2021-04-13 | 西北师范大学 | Preparation method and application of biomass-based carbon material |
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