CN107954494A - The method of package technique absorbent module - Google Patents
The method of package technique absorbent module Download PDFInfo
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- CN107954494A CN107954494A CN201610897899.0A CN201610897899A CN107954494A CN 107954494 A CN107954494 A CN 107954494A CN 201610897899 A CN201610897899 A CN 201610897899A CN 107954494 A CN107954494 A CN 107954494A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
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- Chemical Kinetics & Catalysis (AREA)
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Molecular Biology (AREA)
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Abstract
The present invention relates to a kind of method that self-assembling technique prepares Electro Sorb component.The Electro Sorb component preparating mechanism as shown,（1) electrode substrate,（2) sorbing material,（3) it is assembled in the long chain polymer ion on sorbing material surface.The abundant functional group carried using sorbing material, one layer of very thin long chain polyelectrolyte membrane with like charges is uniformly assembled by noncovalent interaction in the surface of solids.The positive and negative anodes of two panels is respectively provided with positive and negative charge polyelectrolyte membrane electrode slice and power supply are connected, when being tested for Electro Sorb desalination, the ion of the positive and negative charge film layer permeable belt opposite charges formed by polymer ions, repel ion of the same race at the same time, greatly speed up ionic adsorption efficiency, it is shown that stronger desalting ability.The present invention have surface-assembled layer it is very thin, spend cost it is few, the advantages such as technological process is short, have good prospects for commercial application.
Description
Technical field
The present invention relates to a kind of method that self-assembling technique prepares Electro Sorb component, more particularly to package technique absorbent module
Method.
Background technology
Capacitive deionization technology（CapacitiveDeionizationTechnology, CDT) it is to be based on electric double layer capacitance
Device principle carries out a kind of brand-new Electro Sorb desalination process of charging desalination and electric discharge reactivating.When the aqueous solution containing salt ion from
The opposite electrode intermediate flow for being applied with voltage of two panels is out-of-date, and due to the effect of electric field, cation is moved to cathode electrode direction,
Anion thinks that anode electrode direction is moved so that the salt ion in aqueous solution, which is attracted in the hole of sorbing material, forms double electricity
Layer, so as to reduce the saliferous rate in aqueous solution, realizes the desalination and purification of water, obtains relatively pure water.Due to desalination
During only need to use direct current, and electric pole short circuit or reversal connection are achieved that to the circular regeneration of electrode, it is not necessary to use
Substantial amounts of acid-base pair electrode is cleaned, therefore will not produce secondary pollution, has energy-saving and environmental protection, efficient and easy to operate
Feature.
The process that the activated carbon porous material of electrode is prepared in application activation method, creates substantial amounts of micropore（Aperture is less than
2nm), the specific surface area that contribute to this material 80% of these micropores.Due to the limitation of micropore size size, adsorbed from
Son can produce superposition when being stored in aperture in the form of electric double layer, be unfavorable for the formation of electric double layer, so as to can be produced to salt rejection rate
Raw detrimental effect.
Current research tendency is that modification is processed to original sorbing material to improve its adsorption efficiency, either
Research and development prepare the sorbing material of new excellent performance.In the membrane capacitance deionization technology of electrode surface covering amberplex
Selectively permeable ion, repels ion of the same race, prevents unnecessary Ion transfer, improves Electro Sorb.Patent of invention（Electrochemical capacitance
Formula desalter and its manufacture method, application number 200780045835.7) more comprehensively describe ion exchange membrane technology and exist
The application of Electro Sorb.In the electric adsorption module that the patents such as CN01 " 27 " 47, CN01245 sun 4 use, make between opposite electrode plate
Two electrodes are separated with electrolyte membrance, are placed into contact with short circuit.Patent of invention（A kind of coated electrode adsorbent equipment, application number
201310177914.0) a kind of coated electrode electric adsorption device is disclosed, the ion exchange coating energy coated in electrode surface
Specific charge ion is obstructed, reduces energy consumption.
The present invention proposes that a kind of self-assembling technique prepares Electro Sorb component, and in this Electro Sorb component, electrode surface is certainly
Row is assembled into polyion layer, exercises the effect of amberplex, while intercept absorbed portion ion.The ion announced with before is handed over
Change film adsorbent equipment to compare, the present invention has the advantages that surface-assembled layer is very thin, preparation process is extremely simple, spends cost few.
The content of the invention
It is an object of the invention to provide the Electro Sorb component that a kind of separative efficiency is high, preparation process is simple and of low cost
Preparation method.
- kind of the method that adsorption electrode is prepared using self-assembling technique, it is characterised in that：Prepared adsorption electrode includes
(1) electrode substrate,（2) sorbing material and（3) it is assembled in the long chain polymer ion on sorbing material surface；；This method is with length
The poly- zwitterion of chain for solute prepare polyelectrolyte solution, using sorbing material per se with functional group, the absorption
Material includes the porous material with positive and negative charge functional group, passes through uniform group of noncovalent interaction on sorbing material surface
A strata electrolytic thin-membrane is filled, adsorption electrode of the two panels with dissimilar charges film is prepared into and is connected respectively at power positive cathode.
Further, wherein the structure of the polyelectrolyte membrane of the electrode surface assembling is poly- by controlling with thickness control
The dosage of compound ion is realized；Wherein described long chain polymer cationic molecule amount control 50,000 15000,；Its
Described in the control of long chain polymer anion molecule amount 400,000 600,000,；Polymer ions solution concentration control
System is in 1 3mg/L;It is 50 100nm in the thickness of the polyelectrolyte membrane of electrode surface assembling;
Further, wherein the long chain polymer cation is kayexalate, molecular weight Mw:50000〜
70000;The wherein described long chain polymer anion is polydimethyl diallyl ammonium chloride, molecular weight Mw:400,000〜
500,000。
Further, wherein the sorbing material includes activated carbon, active carbon nanotube or graphene composite material.
Further, the functional group that wherein activated carbon carries refers to that carboxyl, lactone group, phenolic hydroxyl group or carbonyl negative electrical charge are used
In absorption assembling polycation roDA;Or amino, imide, lactam group or class amide groups positive charge are used for absorption assembling and gather
Anion PSS.
The wherein described electrode substrate material includes nickel foam, titanium foam, stainless (steel) wire, carbon paper, nickel foam or graphite paper.
The wherein described adsorption electrode with dissimilar charges film is connected with power positive cathode refers to that surface-assembled is gathered
The electrode slice of cation roDA is connected with cathode；The electrode slice of the PSS of surface-assembled polyanion is connected with anode.Poly- negative and positive from
Sublayer exercises the effect of amberplex in Electro Sorb process, and the ion of alternative infiltration oppositely charged, repels of the same race
Ion, while intercept absorbed portion ion.
Self-assembling technique is the important component of the present invention, its principle is by noncovalent interaction power shape between opposite charges
Into one kind there is specific order of molecule aggregate.Wherein the interaction force of non-covalent bond or synergistic effect are self assembly skills
The key of art.This power includes the active forces such as hydrogen bond, Van der Waals force, electrostatic force, hydrophobic forces and key.
The present invention includes sorbing material.Most sorbing material surface in preparation process, which can all carry various hats, to roll into a ball,
Such as the material surface such as activated carbon made from activation method is often with abundant functional group（For example, the functional group of negative electrical charge：Carboxylic
Base, lactone group, phenolic hydroxyl group, carbonyl；The functional group of positive charge：Amino, imide, lactam group, class amide groups）, meet this
Requirement of the invention self-assembling technique for interaction force.
According to the present invention, a kind of method that self-assembling technique prepares Electro Sorb component, the component include：A) surface self-chambering
The adsorption electrode of polycation thin layer；B) hydrophilic electrolyte membrance；C) the surface-assembled absorption of polyanion thin layer
Electrode.
Electro Sorb component, further includes the supply stream with flow velocity and the device for coutroi velocity.Further include as preparation
The voltage source that Electro Sorb component provides and the device for changing the voltage.The Electro Sorb component assembled has polarity, and
And further include the device for inverting the polarity.These devices are conventional equipment.
The advantage of positive and negative charge assembled layers is to can adhere to electrode surface under the conditions of no external force to form a loose tool
There is very thin network-like film, considerably increase the contact site of adion, selective infiltration phase different ion, repels electricity of the same race
Lotus, improves the effective mobility of ion, while also intercepts a part of ion in network layer, so as to improve the desalination of device
Rate.
The structure of the polyelectrolyte membrane of electrode surface assembling of the present invention can be by controlling polymer ions with thickness control
Dosage realize.The wherein described long chain polymer cation component is controlled in 50,000 15000, including polymer poly
Sodium styrene sulfonate（PSS, molecular weight Mw:50000〜70000);The wherein described long chain polymer anion molecule amount control
System is in 400,000 600,000, including polydimethyl diallyl ammonium chloride（PDDA, molecular weight Mw:400,000〜500,
000).The molecular weight of long chain polymer ion it is excessive or it is too small can so that the film layer of tissue is excessively fine and close and thickness is blocked up,
Transmission and suction-operated of the ion in assembled layers can be so hindered, reduces adsorption efficiency.
Inventive polymers solion concentration is controlled in 1 3mg/L.The amount that the present invention takes polymer ions solution is
20 50ml, the thickness for controlling the polyelectrolyte membrane in electrode surface assembling is about 50 100nm.Its thickness far smaller than from
Son exchanges the film thickness that coating technology is scraped（L-l 〇 〇 um), but in addition to it can play the same effect of ion exchange coating, this hair
Bright ultra-thin assembling film is easier to penetrating through for phase different ion, also greatly increases the contact site of adion, desalination rate
Business is carried significantly.
Brief description of the drawings
Fig. 1 is electrode slice surface self-organization polymer ions charge layer procedure chart；
(1) electrode substrate,（2) sorbing material,（3) it is assembled in the long chain polymer ion on sorbing material surface.
Fig. 2 is the profile using the Electro Sorb component of the adsorption electrode assembling prepared.
(1) electrode substrate,（2) sorbing material（3) be assembled in sorbing material surface long chain polymer sheath,（4)
Insulating washer,（5) support plate,（6) liquid outlet,（7) inlet.
Embodiment
The present invention concrete technology step be：
(1) sorbing material activated carbon is mixed with a certain amount of acetylene carbon black, strengthens its electric conductivity, then mix polytetrafluoro wherein
Vac emulsion, material is sticked in electrode substrate, is pressed into that sorbing material is tightly packed, the smooth thin slice in surface, and thickness is about
0.5_.Substrate material can select porous material nickel foam, titanium foam, stainless (steel) wire, carbon paper, nickel foam, graphite paper；Specifically may be used
To use but be not limited to material activity charcoal with acetylene carbon black and ptfe emulsion mass ratio as 75:15:10 mixing.
(2) the polymer cation TODA of selection and polymer anion PSS are configured to the solution of lmg/mL concentration,
20ml is measured to be added dropwise respectively in two panels（1) on piece pressed in, makes it voluntarily assemble one layer of polymeric sheath, dry.Gather from
The thickness of sublayer is about 50-100nm.
(3) the electrode slice assembling absorbent module prepared in utilizing (2).The wherein electrode of surface-assembled polycation thin layer
Piece is connected with positive pole, and the electrode slice of surface-assembled polyanion thin layer is connected with power cathode.
Application example：
Example 1:
Novel adsorption component is assembled using the technology of the present invention, connects power supply, positive pole and the side for assembling polycation layer
Electrode is connected, and power cathode is connected with assembling a lateral electrode of polyanion layer.First, using substantial amounts of deionized water to whole
A component system is cleaned, and ensures the accuracy of absorption result.It is 1.2V that Electro Sorb voltage is controlled in experiment, control absorption temperature
Spend for 25 °C, carry out Electro Sorb desalting performance test.Select the sodium chloride solution of various concentrations, concentration gradient is arranged to 400,
800th, 1600,3200,6400mg/L, as pending solution, adsorption process is arranged to circulatory system absorption, and Electro Sorb result is such as
Shown in following table：
Concentration mg/L 400 800 1,600 32006400
6.38 10.76 16.06 26.i151.50 of unit adsorbance mg/g
Example 2:
Novel adsorption component is assembled using the technology of the present invention, connects power supply, positive pole and the side for assembling polycation layer
Electrode is connected, and power cathode is connected with assembling a lateral electrode of polyanion layer.First, using substantial amounts of deionized water to whole
A component system is cleaned, and ensures the accuracy of absorption result.It is 1.6v that the rise of Electro Sorb voltage is controlled in experiment, and control is inhaled
Enclosure temperature remains unchanged for 25 °C, carries out Electro Sorb desalting performance test.Select the sodium chloride solution of various concentrations, concentration gradient
Be arranged to 400,800,1600,3200,6400mg/L, as pending solution, adsorption process is arranged to circulatory system absorption, electricity
Absorption result is as shown in the table：
Concentration mg/L 400 800 160032006400
656 1267 19.3032.57627 of unit adsorbance mg/g
Example 3:
Novel adsorption component is assembled using the technology of the present invention, connects power supply, positive pole and the side for assembling polycation layer
Electrode is connected, and power cathode is connected with assembling a lateral electrode of polyanion layer.First, using substantial amounts of deionized water to whole
A component system is cleaned, and ensures the accuracy of absorption result.Control Electro Sorb voltage to be remained unchanged for 1.2v in experiment, control
Adsorption temp processed is 35 °C, carries out Electro Sorb desalting performance test.The sodium chloride solution of various concentrations is selected, concentration gradient is set
For 400,800,1600,3200,6400mg/L, as pending solution, adsorption process is arranged to circulatory system absorption, Electro Sorb
As a result it is as shown in the table：
Concentration mg/L 400 800 1,600 3,200 6400
Unit adsorbance mg/g 6.68 11.88 18.16 39.83 53.50
Example 4:
Novel adsorption component is assembled using the technology of the present invention, connects power supply, positive pole is with assembling polycation layer
One lateral electrode is connected, and power cathode is connected with assembling a lateral electrode of polyanion layer.First, using it is substantial amounts of go from
Sub- water cleans whole component system, ensures the accuracy of absorption result.It is 1.2v that Electro Sorb voltage is controlled in experiment, control
Adsorption temp processed is 25 °C, carries out Electro Sorb desalting performance test.The sodium chloride solution of various concentrations is selected, concentration gradient is set
Change into 50,100,200,300,400mg/L, as pending solution, observation novel adsorption component is for low concentration salt solution
Adsorption desalination performance, adsorption process is arranged to circulatory system absorption, and Electro Sorb result is as shown in the table：
Concentration mg/L 50 100 200 300 400
Unit adsorbance mg/g 0.88 2.23 3.69 4.46 6.38.
Claims (6)
- A kind of 1. method that adsorption electrode is prepared using self-assembling technique, it is characterised in that：Prepared adsorption electrode includes(1) electrode substrate,（2) sorbing material and（3) it is assembled in the long chain polymer ion on sorbing material surface；This method with The long poly- zwitterion of chain for solute prepare polyelectrolyte solution, using sorbing material per se with functional group, the suction Enclosure material includes the porous material with positive and negative charge functional group, uniform by noncovalent interaction on sorbing material surface A strata electrolytic thin-membrane is assembled, is prepared into adsorption electrode of the two panels with dissimilar charges film respectively at power positive cathode phase Connection.
- 2. the method as described in claim 1, wherein the structure and thickness of the polyelectrolyte membrane of the electrode surface assembling Control is realized by controlling the dosage of polymer ions；The wherein described long chain polymer cationic molecule amount control exists 50000〜15000,;Wherein described long chain polymer anion molecule amount control 400,000 600,000,;Polymerization Thing solion concentration is controlled in 1 3mg/L;It is 50 100nm in the thickness of the polyelectrolyte membrane of electrode surface assembling.
- 3. method as claimed in claim 2, wherein the long chain polymer cation is kayexalate, molecule Measure Mw:50000〜70000;The wherein described long chain polymer anion is polydimethyl diallyl ammonium chloride, molecular weight Mw:400,000〜500,000。
- 4. the method as described in claim 1, wherein the sorbing material includes activated carbon, active carbon nanotube or graphene Composite material.
- 5. the functional group that method as claimed in claim 4, wherein activated carbon carry refer to carboxyl, lactone group, phenolic hydroxyl group or Carbonyl negative electrical charge is used to adsorb assembling polycation TODA;Or amino, imide, lactam group or class amide groups positive charge are used In absorption assembling polyanion PSS.
- 6. according to the method described in claim 1, the wherein described electrode substrate material includes nickel foam, titanium foam, stainless steel Net, carbon paper, nickel foam or graphite paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897899.0A CN107954494A (en) | 2016-10-14 | 2016-10-14 | The method of package technique absorbent module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610897899.0A CN107954494A (en) | 2016-10-14 | 2016-10-14 | The method of package technique absorbent module |
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| CN107954494A true CN107954494A (en) | 2018-04-24 |
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| CN201610897899.0A Pending CN107954494A (en) | 2016-10-14 | 2016-10-14 | The method of package technique absorbent module |
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Application publication date: 20180424 |