CN102923825A - Application of poly m-phenylenediamine - Google Patents
Application of poly m-phenylenediamine Download PDFInfo
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- CN102923825A CN102923825A CN2012104513337A CN201210451333A CN102923825A CN 102923825 A CN102923825 A CN 102923825A CN 2012104513337 A CN2012104513337 A CN 2012104513337A CN 201210451333 A CN201210451333 A CN 201210451333A CN 102923825 A CN102923825 A CN 102923825A
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Abstract
The invention provides a poly m-phenylenediamine as an application of electro-adsorption electrode materials, and an electro-adsorption electrode prepared by the poly m-phenylenediamine. The poly m-phenylenediamine is added into a solution compounded by molding binder materials and the solution is blended into paste, and then the paste is evenly covered on electrode supporting materials, and last, the electro-adsorption electrode can be achieved after the paste is dried. The electro-adsorption electrode can be applied to the treatment of industrial waste water containing various heavy metal ions. The application of poly m-phenylenediamine has the advantages of being simple in process, low in cost, and short in preparation period. When the electrode decorated by the poly m-phenylenediamine can be used for absorbing the heavy metal ions, the application of poly m-phenylenediamine has the advantages of being high in removal rate, large in absorption capacity, and capable of being reused.
Description
Technical field
The present invention relates to field of waste water treatment, particularly poly m-phenylene diamine is processed the application of waste water.
Background technology
Electro-adsorption is a kind of new type water treatment process that grew up in recent years, is by applying voltage or electric current, and the charged particle in the electrode surface adsorbent solution can make electrode regeneration by removing electric field or applying reversed electric field after electrode is saturated.With respect to other water treatment method, have that less investment, energy consumption are low, an advantage such as non-secondary pollution, long service life and regeneration are easy, be a kind of economical and effective method.Therefore, electro-adsorption is counted as a kind of rising water technology.
According to electrochemical theory, two alternate when applying the decomposition voltage that is lower than solution at electrode and electrolyte solution, electric charge can redistribute in minimum distance, arrange.By way of compensation, charging electrode can attract the ion of the oppositely charged in the solution, and the variation of interface residual electric charge will cause the change of interfacial electric double layer potential difference, thereby forms closely electrostatic double layer, and at electrode and electrolyte interface stored charge.The electrostatic double layer model of at present widespread use is Gouy-Chapman-Stern (GCS) model.The GCS model thinks that electrostatic double layer comprises fixed layer and two parts of dispersion layer, and the total volts lost of electrostatic double layer equals the volts lost of fixed layer and the volts lost sum of dispersion layer.
The electro-adsorption process is comprising physical adsorption and two kinds of processes of chemisorption simultaneously, but electro-adsorption has still played leading role therein, and the end-result of absorption is closing of this three.Because electrostatic double layer has the characteristic of electric capacity, can charge.In process of charging, electrostatic double layer can and be kept at wherein the ionic adsorption in the solution, puts aside certain energy; In discharge process, then can give off energy and ion, so that electrostatic double layer obtains again regeneration.
The preparation moulding process of the selection of sorbent material and electrode is the key of electro-adsorption technology practical application.In order to adsorb a large amount of charged particles, sorbent material must have larger specific surface area and good conductivity, so carbon-based material, or becomes the common electrode material based on the matrix material of carbon-based material.Carbon-based material has shown preferably performance in the electro-adsorption process, but also has some problems, and low such as loading capacity, energy consumption is large, and material price is expensive, is difficult for obtaining etc.
Summary of the invention:
The electro-adsorption that the purpose of this invention is to provide a kind of new electrode adsorption material poly m-phenylene diamine and be applied to heavy metal ion is processed.The invention provides a kind of poly m-phenylene diamine as the new application of electrode adsorption agent.Poly m-phenylene diamine is coated in behind the surface of electro-adsorption electrode the heavy metal ion in can active adsorption solution.
The present invention also provides a kind of electro-adsorption electrode, and its surface-coated has poly m-phenylene diamine.Heavy metal ion in this electro-adsorption electrode energy active adsorption solution.This electrode innovatively industrial goods that are easy to get such as using polythene alcohol or chitosan has been simplified the electrode moulding process greatly as binding agent.
The process for preparing the electro-adsorption electrode with poly m-phenylene diamine is, presses feed ratio, and poly m-phenylene diamine is added in the solution that the molding adhesive material is made into, and the furnishing pasty state evenly is coated on the electrode supporting material, and drying obtains the electro-adsorption electrode in the baking oven.
As preferably: feed ratio is that the 1-2g poly m-phenylene diamine joins in the 4-8ml binder solution;
As preferably: the molding adhesive material is polyvinyl alcohol or chitosan, and the solute massfraction of wiring solution-forming is 2-4%;
As preferably: coating processes is on every plate electrode propping material, applies the 50-100mg poly m-phenylene diamine;
As preferably: the electrode supporting material is hard card paper and wire netting,
As preferably: the drying treatment temperature is 60 ℃ in the baking oven, and be 24h time of drying.
Processing the step that contains heavy metal ion solution with the electro-adsorption electrode of poly m-phenylene diamine preparation is: the poly m-phenylene diamine electrode is fixed in the electro-adsorption container, electrode links to each other with power supply with wire, apply voltage, the solution that contains heavy metal ion is adsorbed, the monitoring electrical conductivity of solution changes, characterize heavy metal ions concentration in solution with conductivity variations and change, treat that electrical conductivity of solution is down to prescribed level, finish dealing with.
As preferably: the solution that contains heavy metal ion is trade effluent and high salinity underground water.
The invention has the beneficial effects as follows: it is short that poly m-phenylene diamine electro-adsorption electrode has fabrication cycle, the advantage that cost is low; The electrode of modifying with poly m-phenylene diamine has advantage easy to operate, that the removal of heavy metal ions rate high, loading capacity is large when being used for Adsorption of Heavy Metal Ions.
Description of drawings:
Fig. 1: poly m-phenylene diamine is as adsorption electrode, when the solution that contains heavy metal ion is carried out electro-adsorption, and Cu
2+The relation of concentration and electrical conductivity of solution
Embodiment
Be described in detail with the every measured value shown in the embodiment in the present invention and measure as follows:
Loading capacity Q (mgg
-1) and clearance q (%) calculate according to following formula respectively
Q=(C
0-C
t)V/m
q％=(C
0-C
t)/C
0×100％
In the formula, C
0: heavy metal ion starting point concentration (mg L
-1); C
t: concentration of heavy metal ion during adsorption equilibrium; V: used heavy metal ion liquor capacity (mL) during absorption; M: adsorbent mass.
Embodiment 1: be coated with the electrode of poly m-phenylene diamine, apply voltage and process the solution that contains single heavy metal ion
Self-control poly m-phenylene diamine electrode is as adsorption electrode: it is in 2% the polyvinyl alcohol water solution that the 1g poly m-phenylene diamine is added to 4ml solute massfraction, the furnishing pasty state, pasty mixture with about 1/10 evenly is coated on wire netting, and 60 ℃ of dry 24h get the electro-adsorption electrode in the baking oven.
Dispose respectively 0.25,0.5,1,2,5,10mmol L
-1CuSO
4Solution carries out electro-adsorption as adsorption electrode to these solution with above-mentioned self-control poly m-phenylene diamine electrode, and the relation of concentration of heavy metal ion and electrical conductivity of solution is seen Fig. 1.
Configuration concentration is 5mmol L
-1CuSO
4Solution, get 80mL solution and place contactor, the electrode that will contain the 50mg poly m-phenylene diamine is placed in the electro-adsorption container, electrode links to each other with power supply with wire, carries out the electro-adsorption test under-0.4V, fully adsorbs, measure the specific conductivity of the rear solution of absorption, find out the concentration of heavy metal ion corresponding with it from Fig. 1, calculating clearance is 78%, and loading capacity is 400mg g
-1
Comparative Examples 1: the poly m-phenylene diamine powder as sorbent material, do not apply voltage and process the solution contain single heavy metal ion
Configuration concentration is 5mmol L
-1CuSO
4Solution is got 80mL solution and is placed contactor, and poly m-phenylene diamine powder 50mg is placed in the electro-adsorption container, carries out adsorption test, fully absorption, and using the method identical with embodiment 1 to record clearance is 29%, loading capacity is 148mg g
-1
Comparative Examples 2: use the polyvinyl alcohol embedding poly m-phenylene diamine, do not apply voltage and process the solution that contains single heavy metal ion
Embedding medium PVA concentration is 8%, and embedding is than being 1:1, and crosslinking time is 24h, and adds 0.2% additive sodium alginate.Getting 80mL concentration is 5mmol L
-1CuSO
4Solution places contactor, gets the poly m-phenylene diamine 50mg of above-described PVA embedding as sorbing material, fully adsorbs, and using the method identical with embodiment 1 to record clearance is 52.4%.Loading capacity is 268.3mg g
-1
Embodiment 2: be coated with the electrode of poly m-phenylene diamine, apply voltage and process the solution that contains contents of many kinds of heavy metal ion
Self-control poly m-phenylene diamine electrode is as adsorption electrode: it is in 4% the chitosan aqueous solution that the 1g poly m-phenylene diamine is added to 4ml solute massfraction, the furnishing pasty state, pasty mixture with about 1/20 evenly is coated on hard card paper, and 60 ℃ of dry 24h get the electro-adsorption electrode in the baking oven.
Configuration concentration is for being 5mmol L
-1PbNO
3, CuSO
4Mixing solutions is got 80mL solution and is placed contactor, and the electrode that will contain the 50mg poly m-phenylene diamine is placed in the electro-adsorption container, electrode links to each other with power supply with wire,-0.4V carries out electro-adsorption to be tested, and reaches abundant absorption, and total clearance of heavy metal ion is 81%.Maximum adsorption capacity is 876mg g
-1
Comparative Examples 3: the poly m-phenylene diamine powder as sorbent material, do not apply voltage and process the solution contain contents of many kinds of heavy metal ion
Configuration concentration is 5mmol L
-1PbNO
3, CuSO
4Solution is got 80mL solution and is placed contactor, and poly m-phenylene diamine powder 50mg is placed in the electro-adsorption container, carries out adsorption test, reaches abundant absorption, and total clearance of heavy metal ion is 31%.Maximum adsorption capacity is 335mg g
-1
Comparative Examples 4: use the polyvinyl alcohol embedding poly m-phenylene diamine, do not apply voltage and process the solution that contains contents of many kinds of heavy metal ion
Embedding medium PVA concentration is 8%, and embedding is than being 1:1, and crosslinking time is 24h, and adds 0.2% additive sodium alginate.Configuration concentration is 5mmol L
-1PbNO
3, CuSO
4Mixing solutions is got 80mL solution and is placed contactor, gets the poly m-phenylene diamine 50mg of above-described PVA embedding as sorbing material, fully adsorbs, and maximum material removal rate is 34.2%.Maximum adsorption capacity is 370mg g
-1
Claims (9)
1. the application of a poly m-phenylene diamine is characterized in that: the described poly m-phenylene diamine that is applied as is as the application of electro-adsorption electrode materials.
2. adsorption electrode, it is characterized in that: described adsorption electrode is to utilize poly m-phenylene diamine to make for raw material.
3. adsorption electrode as claimed in claim 2, it is characterized in that: the described process for preparing the electro-adsorption electrode with poly m-phenylene diamine is, press feed ratio, poly m-phenylene diamine is added in the solution that the molding adhesive material is made into, the furnishing pasty state, evenly be coated on the electrode supporting material, oven dry obtains the electro-adsorption electrode.
4. adsorption electrode as claimed in claim 3, it is characterized in that: described feed ratio is that the 1-2g poly m-phenylene diamine joins in the 4-8ml binder solution.
5. adsorption electrode as claimed in claim 3, it is characterized in that: described molding adhesive material is polyvinyl alcohol or chitosan, the solute massfraction of wiring solution-forming is 2-4%.
6. adsorption electrode as claimed in claim 3, it is characterized in that: described coating processes is on every plate electrode propping material, applies the 50-100mg poly m-phenylene diamine.
7. adsorption electrode as claimed in claim 3, it is characterized in that: described electrode supporting material is hard card paper or wire netting.
8. adsorption electrode as claimed in claim 2, it is characterized in that: described adsorption electrode can be used for the heavy metal ion in the adsorbent solution, concrete steps are, the poly m-phenylene diamine electrode is fixed in the electro-adsorption container, and electrode links to each other with power supply with wire, apply voltage, the solution that contains heavy metal ion is adsorbed, and the monitoring electrical conductivity of solution changes, and characterizes heavy metal ions concentration in solution with conductivity variations and changes, treat that electrical conductivity of solution is down to prescribed level, finish dealing with.
9. adsorption electrode as claimed in claim 8, it is characterized in that: the described solution that contains heavy metal ion is trade effluent or high salinity underground water.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085964A (en) * | 2014-07-07 | 2014-10-08 | 常州大学 | Electrochemical treatment method for removing lead ions from water by adopting polyaniline/attapulgite paper electrode |
| CN104535640A (en) * | 2014-12-09 | 2015-04-22 | 常州大学 | Method for simultaneously detecting cadmium and lead ions by employing sulfhydrylated peroxidized poly(m-phenylenediamine) modified bismuth membrane electrode |
| CN104558598A (en) * | 2015-01-04 | 2015-04-29 | 常州大学 | One-step method for synthesizing poly(m-phenylenediamine) and graphene composite material and application of composite material to electric adsorption of heavy metal ions in water |
| CN104761025A (en) * | 2015-04-01 | 2015-07-08 | 常州大学 | Method for electrochemically regulating and controlling redox state of poly(m-phenylenediamine) and application of method to electrical adsorption of heavy metal ions |
Citations (3)
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| CN1330043A (en) * | 2001-06-25 | 2002-01-09 | 清华大学 | Multi-stage electric capacitance deionizer |
| CN101016587A (en) * | 2007-03-08 | 2007-08-15 | 同济大学 | Method of reclaiming silver from silver containing solution by poly m-phenylenediamine as adsorbent |
| CN101798131A (en) * | 2009-02-09 | 2010-08-11 | 深圳市蓝水晶环保有限公司 | High-efficiency electroplating wastewater treatment and resource utilization device |
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2012
- 2012-11-12 CN CN2012104513337A patent/CN102923825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330043A (en) * | 2001-06-25 | 2002-01-09 | 清华大学 | Multi-stage electric capacitance deionizer |
| CN101016587A (en) * | 2007-03-08 | 2007-08-15 | 同济大学 | Method of reclaiming silver from silver containing solution by poly m-phenylenediamine as adsorbent |
| CN101798131A (en) * | 2009-02-09 | 2010-08-11 | 深圳市蓝水晶环保有限公司 | High-efficiency electroplating wastewater treatment and resource utilization device |
Non-Patent Citations (1)
| Title |
|---|
| 陈慧颖等: "热解聚间苯二胺基超级电容器电极材料的研究", 《黑龙江大学自然科学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085964A (en) * | 2014-07-07 | 2014-10-08 | 常州大学 | Electrochemical treatment method for removing lead ions from water by adopting polyaniline/attapulgite paper electrode |
| CN104535640A (en) * | 2014-12-09 | 2015-04-22 | 常州大学 | Method for simultaneously detecting cadmium and lead ions by employing sulfhydrylated peroxidized poly(m-phenylenediamine) modified bismuth membrane electrode |
| CN104535640B (en) * | 2014-12-09 | 2017-02-22 | 常州大学 | Method for simultaneously detecting cadmium and lead ions by employing sulfhydrylated peroxidized poly(m-phenylenediamine) modified bismuth membrane electrode |
| CN104558598A (en) * | 2015-01-04 | 2015-04-29 | 常州大学 | One-step method for synthesizing poly(m-phenylenediamine) and graphene composite material and application of composite material to electric adsorption of heavy metal ions in water |
| CN104761025A (en) * | 2015-04-01 | 2015-07-08 | 常州大学 | Method for electrochemically regulating and controlling redox state of poly(m-phenylenediamine) and application of method to electrical adsorption of heavy metal ions |
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Application publication date: 20130213 |