CN110240240A - A kind of device and method of enhancing flowing electrode capacitance deionization performance - Google Patents
A kind of device and method of enhancing flowing electrode capacitance deionization performance Download PDFInfo
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- CN110240240A CN110240240A CN201910563955.0A CN201910563955A CN110240240A CN 110240240 A CN110240240 A CN 110240240A CN 201910563955 A CN201910563955 A CN 201910563955A CN 110240240 A CN110240240 A CN 110240240A
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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
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- C02F2201/46—Apparatus for electrochemical processes
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Abstract
The invention belongs to water-treatment technology fields, are related to a kind of device and method of enhancing flowing electrode capacitance deionization performance.The present invention is based on traditional FCDI, it is collector substrate using clean conductive material, using electro-deposition, hydrothermal synthesis, polytetrafluoroethylene (PTFE) mull technique, chemical reduction method, ion sputtering process, high-temperature sintering process, the method of metal powder sintered method carries out the load of catalyst to collector substrate, to enhance sun, the progress of the electrochemical reaction of cathode chamber, so that anion is faced south, Ghandler motion is dynamic and cation is accelerated to the speed of movable cathode, so that the speed that ion is separated from solution is accelerated, removal efficiency can be improved, and the energy consumption under unit removal amount is reduced to a certain extent.
Description
Technical field
The invention belongs to water-treatment technology field, it is related to device and the side of a kind of enhancing flowing electrode capacitance deionization performance
Method.
Background technique
Water is the absolutely required product of human lives, thus possess safe enough, clean water is extremely important.With people
Mouthful continuous growth with industrialized continuous development, the demand to fresh water have become 21 century mostly important global challenge it
One.Scientific and Cultural Organization's estimation, the population lives of the nearly one third in the world arrive in water-deficient area at present
This number in 2025 will be estimated to double.For the urgent need for meeting this pair of of fresh water, it is light to have been developed for a variety of seawater
Change technology, but widely used desalting technology is there is also very big technological deficiency, such as energy consumption is high for flash distillation, ion exchange and anti-
Infiltration technology needs expensive regeneration technology, and secondary pollution can be brought in regenerative process；Although electrodialysis system obtains quotient
Industry, but since the voltage used is very high, therefore power consumption is larger.And capacitive deionization (CDI) technology is in recent years by extensive
The water treatment technology of concern.
Capacitive deionization technology is to apply an electrostatic field containing solion to processed, divides ion and water
From to obtain the lower water of ion concentration.When the water treatment technology uses flow-type electrode solution as electrode, due to constantly
Supply fresh electrode material, ion may be implemented and continuously adsorb, so realize to containing high concentration ion salt water and waste water carry out
Purification, this CDI technology are referred to as to flow capacitive deionization (FCDI) technology.
Capacitive deionization technology is flowed compared with traditional water treatment technology, with low energy consumption, water use efficiency is high, operation
The advantages that simple.The technology can be used for the fields such as sea water desalination, the softening of hard water, the enrichment of noble metal, the preparation of high purity water.
Existing flowing capacitive deionization technology the problem is that: the anions and canons in water treatment room are respectively to anode and cathode
Room migration velocity is slower, and can not quickly separate ion from solution.To solve the above problems, proposing a kind of enhancing
Flow the device and method of electrode capacitance deionization performance.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of enhancing flowing electrode capacitance deionization performances
Device and method.
For achieving the above object, the invention adopts the following technical scheme:
A kind of device collector of enhancing flowing electrode capacitance deionization performance, the collector is supported catalyst
Collector.
A kind of device collector of above-mentioned enhancing flowing electrode capacitance deionization performance, the collector supported catalyst
Unit area load capacity be 0.05~200mg/cm2。
The device collector of electrode capacitance deionization performance, raw material used in the catalyst are flowed in a kind of above-mentioned enhancing
For one of nickel, cobalt, manganese, copper, iron, tungsten, the metal hydrochloride of molybdenum, nitrate, sulfate, carbonate and acetate or several
Kind.
The device collector of above-mentioned a kind of enhancing flowing electrode capacitance deionization performance, used in the substrate of the collector
Raw material is titanium, nickel, copper, iron, aluminium, silver, pure metal or alloy in lead, stainless steel, carbon cloth, graphite plate, graphite paper.
A kind of device collector of above-mentioned enhancing flowing electrode capacitance deionization performance, the side of collector supported catalyst
Method are as follows: electrodeposition process, hydrothermal synthesis method, polytetrafluoroethylene (PTFE) mull technique, chemical reduction method, ion sputtering process, high-temperature sintering process or
Metal powder sintered method.
A kind of device collector of above-mentioned enhancing flowing electrode capacitance deionization performance, the side of collector supported catalyst
Method are as follows: (1) pre-process:
By the aqueous hydrochloric acid solution ultrasound 3-60min of collector substrate 0.1-5mol/L, acetone, ethyl alcohol, deionization moisture
Not ultrasound 10-60min is pre-processed, and spare after dry 3-24h at 25-100 DEG C；
(2) preparation of solution:
By one in nickel, cobalt, manganese, copper, iron, tungsten, the metal hydrochloride of molybdenum, nitrate, sulfate, carbonate or acetate
Kind or it is several be dissolved in deionized water, is formed concentration of metal ions for 0.01-1mol/L single or mixed salt solution 1；
(3) load of catalyst:
(electrodeposition process) by step (2) solution 1 and step (1) in clean collector substrate in current density be 0.5-
10A/dm2Under constant current or voltage is to carry out catalyst load by electro-deposition 3-100min under 0.5-10V constant pressure；Or
(hydrothermal synthesis method) by step (2) solution 1 and step (1) in clean collector substrate to be transferred to liner be poly-
In the autoclave of tetrafluoroethene, in an oven using hydrothermal synthesis method, 5-24h is reacted at 80-200 DEG C；
(4) it cleans, dry:
Collector after step (3) load is taken out, with deionized water repeated flushing 3-5 times, and at 60-100 DEG C
After dry 3-24h, the anode collector of supported catalyst is obtained, catalyst unit area load capacity is 0.05~200mg/cm2；
(5) prepared by cathode current collector:
Step (1)~(4) are repeated, obtain the cathode current collector of supported catalyst, catalyst unit area load capacity is
0.05~200mg/cm2。
A kind of device of enhancing flowing electrode capacitance deionization performance, described device includes water treatment room, cation exchange
Film, anion-exchange membrane flow electrode chamber, anode collector, cathode current collector, end plate；Anode collector is collection described previously
Fluid or cathode current collector are collector described previously or yin, yang the two poles of the earth collector is collector described previously.
A method of enhancing flowing electrode capacitance deionization performance, the method are to load to the collector of FCDI device
Catalyst.
A kind of method of above-mentioned enhancing flowing electrode capacitance deionization performance, the method are to urge anode collector load
Agent, or to cathode current collector supported catalyst, or to the equal supported catalyst of yin, yang the two poles of the earth collector.
A kind of method of above-mentioned enhancing flowing electrode capacitance deionization performance, the method for collector supported catalyst is as above
The method.
A kind of method of above-mentioned enhancing flowing electrode capacitance deionization performance, the method is the collector to FCDI device
Supported catalyst recycles the Actidose that flowing electrode is 1-200g/L, and in the case where voltage is the constant pressure of 1-10V or electric current is close
Degree is 0.1-50A/m2Under constant current, the solution in water treatment room is purified.
Beneficial effects of the present invention:
The present invention, there are the slow-footed problem of Ion transfer, is proposed using traditional FCDI as base for tradition FCDI technology
Plinth makes anion face south Ghandler motion by enhancing the progress of the electrochemical reaction of positive and negative pole room to collector supported catalyst
Dynamic and cation is accelerated to the speed of movable cathode, so that the speed that ion is separated from solution is accelerated, that is, removal effect can be improved
Rate, and the energy consumption under unit removal amount is reduced to a certain extent.
Detailed description of the invention
Fig. 1 FCDI cellular construction schematic diagram；Big arrow indicates that water (flow) direction, small arrow indicate ion moving direction in figure；
10. water treatment room, 11a. cation-exchange membrane, 11b. anion-exchange membrane, 12. flowing electrode chambers, 13a. cathode current collector,
13b. anode collector, 14. end plates；
Fig. 2 be in embodiment 1 nickel foam as collector substrate figure, a.NF11, b.NF12；
Fig. 3 is the collector energy consumption schematic diagram of the collector of supported catalyst and unsupported catalyst in embodiment 1；
Fig. 4 be in embodiment 2 titanium plate as collector substrate figure；a.Ti11, b.Ti12；
Fig. 5 is the collector energy consumption schematic diagram of the collector of supported catalyst and unsupported catalyst in embodiment 2；
Fig. 6 be in embodiment 3 carbon cloth as collector substrate figure, a.CC11, b.CC12；
Fig. 7 is the collector energy consumption schematic diagram of the collector of supported catalyst and unsupported catalyst in embodiment 3；
Fig. 8 is the collector energy consumption schematic diagram of the collector of supported catalyst and unsupported catalyst in embodiment 4；
Fig. 9 is the collector energy consumption schematic diagram of the collector of supported catalyst and unsupported catalyst in embodiment 5.
Specific embodiment
Following non-limiting embodiments can with a person of ordinary skill in the art will more fully understand the present invention, but not with
Any mode limits the present invention.Test method described in following embodiments is unless otherwise specified conventional method；The examination
Agent and material commercially obtain unless otherwise specified.
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Anode collector is the collector of supported catalyst,
Cathode current collector be supported catalyst collector or yin, yang the two poles of the earth collector be supported catalyst collector.Catalysis
Raw material used in agent is in nickel, cobalt, manganese, copper, iron, tungsten, the metal hydrochloride of molybdenum, nitrate, sulfate, carbonate and acetate
One or more.It is titanium, nickel, copper, iron, aluminium, silver, the pure metal in lead or alloy that the substrate of collector is raw materials used, stainless
Steel, carbon cloth, graphite plate or graphite paper.The method of collector supported catalyst is electrodeposition process, hydrothermal synthesis method, polytetrafluoroethylene (PTFE)
Mull technique, chemical reduction method, ion sputtering process, high-temperature sintering process or metal powder sintered method.
The method of supported catalyst is by taking electro-deposition and hydrothermal synthesis as an example, step are as follows:
Step A, it pre-processes:
By the aqueous hydrochloric acid solution ultrasound 3-60min of collector substrate 0.1-5mol/L, acetone, ethyl alcohol, deionization moisture
Not ultrasound 10-60min is pre-processed, and spare after dry 3-24h at 25-100 DEG C；
Step B, the preparation of solution:
It will be in the metal hydrochloride of nickel, cobalt, manganese, copper, iron, tungsten, molybdenum etc., nitrate, sulfate, carbonate or acetate
One or more are dissolved in deionized water, form the single or mixed salt solution that concentration of metal ions is 0.01-1mol/L
1；
Step C, the load of catalyst:
Collector substrate clean in solution 1 and step A in step B is 0.5-10A/ in current density by (electrodeposition process)
dm2Under constant current or voltage is to carry out catalyst load by electro-deposition 3-100min under 0.5-10V constant pressure；Or
It is polytetrafluoro that collector substrate clean in solution 1 and step A in step B is transferred to liner by (hydrothermal synthesis method)
In the autoclave of ethylene, in an oven using hydrothermal synthesis method, 5-24h is reacted at 80-200 DEG C；
Step D, cleaning, drying:
Collector after step C load is taken out, is done with deionized water repeated flushing 3-5 times, and at 60-100 DEG C
After dry 3-24h, the anode collector of supported catalyst is obtained, unit area load capacity is 0.05~200mg/cm2；
Step E, prepared by cathode current collector:
Step A-D is repeated, the cathode current collector of supported catalyst is obtained, unit area load capacity is 0.05~200mg/
cm2。
A method of enhancing flowing electrode capacitance deionization performance, the method are the anode collector to FCDI device
Supported catalyst, or to cathode current collector supported catalyst, or to the equal supported catalyst of yin, yang the two poles of the earth collector, supported catalyst
The method of agent is same as above, the Actidose for being then 1-200g/L using flowing electrode, in the case where voltage is the constant pressure of 1-10V or electric
Current density is 0.1-50A/m2Under constant current, the solution in water treatment room is purified.
Embodiment 1
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Yin, yang the two poles of the earth collector is supported catalyst
Collector, raw materials used anode collector supported catalyst is ferric nitrate, nickel nitrate, original used in cathode current collector supported catalyst
Material is nickel nitrate, cobalt nitrate, and collector substrate is nickel foam.
The method of supported catalyst are as follows:
(1) by the nickel foam as collector substrate, with the aqueous hydrochloric acid solution ultrasound 5min of 1.0mol/L, acetone, ethyl alcohol,
Ultrasound 15min is pre-processed deionized water respectively, and spare after dry 6h at 60 DEG C, is denoted as NF0；
(2) ferric nitrate, nickel nitrate are successively dissolved in 90mL deionized water, Fe:Ni=2:1, form concentration of metal ions
For the mixed solution 1 of 0.8mol/L；
(3) by step (2) solution 1 and step (1) in clean nickel foam to be transferred to the liner of 100mL be polytetrafluoro
In the autoclave of ethylene, in an oven using hydrothermal synthesis method, 16h is reacted at 120 DEG C；
(4) it will be taken out through the collector after load in step (3), with drying at deionized water repeated flushing 3-5 times, 60 DEG C
After 12h, the anode collector NF1 of supported catalyst is obtained1, unit area load capacity is 180mg/cm2；
(5) step (1)~(4) are repeated, and the metal salt in step (2) is replaced with into nickel nitrate and cobalt nitrate, are born
The cathode current collector NF1 of carried catalyst2, unit area load capacity is 180mg/cm2；
(6) collector of the supported catalyst obtained by step (1)~(5).
A method of enhancing flowing electrode capacitance deionization performance, the method are yin, yang the two poles of the earth to FCDI device
The equal supported catalyst of collector, the method for supported catalyst are same as above.
Comparative experiments example: with screw, nut successively to end plate, collector NF12, flowing electrode chamber, cation-exchange membrane,
Water treatment room, anion-exchange membrane, flowing electrode chamber, collector NF11, end plate assembled, and using 10g/L active carbon it is molten
Liquid is as flowing electrode, and under 2.0V voltage conditions, the NaCl aqueous solution that the concentration to 100mL is 1.0g/L is carried out at circulation
Reason, is tested at room temperature, after 100min circular treatment, salinity 0.497g/L, and the pure foam nickel of unsupported catalyst
As the experiment that collector is carried out, salinity is reduced to 0.590g/L, and removal rate significantly improves；And from figure 3, it can be seen that
Energy consumption is more much lower than the collector test process of unsupported catalyst.
Embodiment 2
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Yin, yang the two poles of the earth collector is supported catalyst
Collector, raw materials used anode collector supported catalyst is ferric nitrate, nickel nitrate, original used in cathode current collector supported catalyst
Material is nickel nitrate, cobalt nitrate, and collector substrate is titanium plate.
The method of supported catalyst are as follows:
(1) by the titanium plate as collector substrate, with the aqueous hydrochloric acid solution ultrasound 5min of 1.0mol/L, acetone, is gone ethyl alcohol
Ultrasound 15min is pre-processed ionized water respectively, and spare after dry 6h at 60 DEG C, is denoted as Ti0；
(2) ferric nitrate, nickel nitrate are successively dissolved in 500mL deionized water, Fe:Ni=2:1, form concentration of metal ions
For the mixed solution 1 of 0.3mol/L；
(3) in constant current 1.0A/dm2Under, electricity is carried out to the clean collector substrate in step (1) in solution 1 and is sunk
Product 60min；
(4) it will be taken out through the collector after load in step (3), with drying at deionized water repeated flushing 3-5 times, 60 DEG C
After 12h, the anode collector Ti1 of supported catalyst is obtained1, unit area load capacity is 55mg/cm2；
(5) step (1)~(4) are repeated, the ferric nitrate in step 2 is changed to cobalt nitrate, obtains the cathode of supported catalyst
Collector Ti12, unit area load capacity is 55mg/cm2；
(6) collector of the supported catalyst obtained by step (1)~(5).
A method of enhancing flowing electrode capacitance deionization performance, the method are yin, yang the two poles of the earth to FCDI device
The equal supported catalyst of collector, the method for supported catalyst are same as above.
Comparative experiments example: with screw, nut successively to end plate, collector Ti12, flowing electrode chamber, cation-exchange membrane,
Water treatment room, anion-exchange membrane, flowing electrode chamber, collector Ti11, end plate assembled, and using 10g/L active carbon it is molten
Liquid is as flowing electrode, in 9.27A/m2Current density condition under, to the NaCl aqueous solution that the concentration of 100mL is 1.0g/L into
Row circular treatment, is tested at room temperature, and after 60min circular treatment, salinity is reduced to 0.615g/L, the removal rate of salting liquid
40% is had been approached, when carrying out 100min, salinity is reduced to 0.356g/L, and removal rate can reach 65%.And to not loading
The pure titanium collector of catalyst is tested, and when carrying out 100min, salinity is only reduced to 0.803g/L, and removal rate only has
20%, it can be seen that by the modification to collector, in the same time, the removal efficiency of the collector of supported catalyst is significant
It improves, and as can be drawn from Figure 5, the collector of supported catalyst is reduced than the collector energy consumption of unsupported catalyst.
Embodiment 3
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Yin, yang the two poles of the earth collector is supported catalyst
Collector, raw materials used anode collector supported catalyst is copper nitrate, cobalt nitrate, original used in cathode current collector supported catalyst
Material is nickel nitrate, cobalt nitrate, and collector substrate is carbon cloth.
The method of supported catalyst are as follows:
(1) by the carbon cloth as collector substrate, with the aqueous hydrochloric acid solution ultrasound 5min of 1.0mol/L, acetone, is gone ethyl alcohol
Ultrasound 15min is pre-processed ionized water respectively, and the dry 6h at 60 DEG C, spare after drying, is denoted as CC0；
(2) copper nitrate, cobalt nitrate are successively dissolved in 500mL deionized water, Cu:Co=1:1, form concentration of metal ions
For the mixed solution 1 of 0.1mol/L；
(3) in constant current 2.0A/dm2Under, electricity is carried out to the clean collector substrate in step (1) in solution 1 and is sunk
Product 10min；
(4) collector after loading in step 3 is taken out, with drying at deionized water repeated flushing 3-5 times, 60 DEG C
After 12h, the anode collector CC1 of supported catalyst is obtained1, unit area load capacity is 0.1mg/cm2；
(5) step (1)~(4) are repeated, the copper nitrate in step (2) is changed to nickel nitrate, obtains the yin of supported catalyst
Pole collector CC12, unit area load capacity is 0.1mg/cm2；
(6) collector of the supported catalyst obtained by step (1)~(5).
A method of enhancing flowing electrode capacitance deionization performance, the method are yin, yang the two poles of the earth to FCDI device
The equal supported catalyst of collector, the method for supported catalyst are same as above.
Comparative experiments example: with screw, nut successively to end plate, collector CC12, flowing electrode chamber, cation-exchange membrane,
Water treatment room, anion-exchange membrane, flowing electrode chamber, collector CC11, end plate assembled, and using 10g/L active carbon it is molten
Liquid is as flowing electrode, and under the voltage conditions of 1.8V, the NaCl aqueous solution that the concentration to 100mL is 1.0g/L is carried out at circulation
Reason, test result is at room temperature, and after 100min circular treatment, salinity is reduced to 0.532g/L, and to unsupported catalyst
Pure carbon cloth tested, salinity is reduced to 0.681g/L, it can be deduced that the desalting effect of supported catalyst is preferable, passes through Fig. 7
It can be concluded that while improving removal efficiency, the energy consumption for loading the collector of catalyst is lower than unsupported catalyst
It is more.
Embodiment 4
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Anode collector is the collector of supported catalyst,
Raw materials used is ferric nitrate, nickel nitrate, and collector substrate is titanium plate.
The method of supported catalyst are as follows:
(1) by the titanium plate as collector substrate, with the aqueous hydrochloric acid solution ultrasound 5min of 1.0mol/L, acetone, is gone ethyl alcohol
Ultrasound 15min is pre-processed ionized water respectively, and spare after dry 6h at 60 DEG C, is denoted as Ti0；
(2) ferric nitrate, nickel nitrate are successively dissolved in 500mL deionized water, Fe:Ni=2:1, form concentration of metal ions
For the mixed solution 1 of 0.3mol/L；
(3) at constant voltage 7V, electro-deposition is carried out to the clean collector substrate in step (1) in solution 1
30min；
(4) it will take out through the collector after load in step (3), be done at deionized water repeated flushing 3~5 times, 60 DEG C
After dry 12h, the anode collector Ti1 of supported catalyst is obtained1, unit area load capacity is 35mg/cm2；
(5) directly using the Ti0 in step (1) as cathode current collector；
(6) collector of the supported catalyst obtained by step (1)~(5).
A method of enhancing flowing electrode capacitance deionization performance, the method are the anode collector to FCDI device
The method of supported catalyst, supported catalyst is same as above.
Comparative experiments example: with screw, nut successively to end plate, collector Ti0, flowing electrode chamber, cation-exchange membrane, water
Process chamber, anion-exchange membrane, flowing electrode chamber, collector Ti11, end plate assembled, and utilize 10g/L Actidose
As flowing electrode, in 9.27A/m2Current density condition under, the Na for being 1.0g/L to the concentration of 100mL2SO4Aqueous solution into
Row circular treatment, test result is that when carrying out 100min, salinity is reduced to 0.606g/L, and removal rate can reach at room temperature
40%.And the pure titanium collector for not carrying out supported catalyst is tested, when carrying out 100min, salinity is only reduced to
0.831g/L, removal rate only have 17%.It can be seen that removal efficiency improves by the modification to collector, can be obtained from Fig. 8
Out, the collector of supported catalyst is reduced than the collector energy consumption of unsupported catalyst.
Embodiment 5
A kind of device of enhancing flowing electrode capacitance deionization performance, including water treatment room, cation-exchange membrane, anion
Exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate；Cathode current collector is the collector of supported catalyst,
Raw materials used is nickel nitrate, cobalt nitrate, and collector substrate is titanium plate.
The method of supported catalyst are as follows:
(1) by the titanium plate as collector substrate, with the aqueous hydrochloric acid solution ultrasound 5min of 1.0mol/L, acetone, is gone ethyl alcohol
Ultrasound 15min is pre-processed ionized water respectively, and spare after dry 6h at 60 DEG C, is denoted as Ti0；
(2) cobalt nitrate, nickel nitrate are successively dissolved in 500mL deionized water, Co:Ni=2:1, form concentration of metal ions
For the mixed solution 1 of 0.3mol/L；
(3) at constant voltage 5V, electro-deposition is carried out to the clean collector substrate in step (1) in solution 1
90min；
(4) it will take out through the collector after load in step (3), be done at deionized water repeated flushing 3~5 times, 60 DEG C
After dry 12h, the anode collector Ti1 of supported catalyst is obtained2, unit area load capacity is 65mg/cm2；
(5) directly using the Ti0 in step (1) as anode collector；
(6) collector of the supported catalyst obtained by step (1)~(5).
A method of enhancing flowing electrode capacitance deionization performance, the method are the cathode current collector to FCDI device
The method of supported catalyst, supported catalyst is same as above.
Comparative experiments example: with screw, nut successively to end plate, collector Ti12, flowing electrode chamber, cation-exchange membrane,
Water treatment room, anion-exchange membrane, flowing electrode chamber, collector Ti0, end plate are assembled, and utilize 10g/L Actidose
As flowing electrode, in 9.27A/m2Current density condition under, the CaCl for being 0.5g/L to the concentration of 100mL2Aqueous solution carries out
Circular treatment, test result is that, when carrying out 100min, salinity is reduced to 0.204g/L, and removal rate is up to 60% at room temperature.And
The pure titanium for not carrying out supported catalyst is tested as collector, when carrying out 100min, salinity is only reduced to 0.410g/
L, removal rate only have 18%.It can be seen that removal efficiency improves, and as can be drawn from Figure 9, load is urged by the modification to collector
The collector of agent is reduced than the collector energy consumption of unsupported catalyst.
For any person skilled in the art, without departing from the scope of the technical proposal of the invention, all
Many possible changes and modifications are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as equivalent
The equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention, according to the technical essence of the invention to
Any simple modifications, equivalents, and modifications that upper embodiment is done should all still fall within the range of technical solution of the present invention protection
It is interior.
Claims (10)
1. a kind of device collector of enhancing flowing electrode capacitance deionization performance, which is characterized in that the collector is negative
The collector of carried catalyst.
2. a kind of device collector of enhancing flowing electrode capacitance deionization performance according to claim 1, feature
It is, the unit area load capacity of the collector supported catalyst is 0.05~200mg/cm2。
3. a kind of device collector of enhancing flowing electrode capacitance deionization performance according to claim 1 or 2, special
Sign is, raw material used in the catalyst be nickel, cobalt, manganese, copper, iron, tungsten, the metal hydrochloride of molybdenum, nitrate, sulfate,
One or more of carbonate and acetate.
4. the device afflux of described in any item a kind of enhancing flowing electrode capacitance deionization performances according to claim 1~3
Body, which is characterized in that the method for collector supported catalyst are as follows: electrodeposition process, hydrothermal synthesis method, polytetrafluoroethylene (PTFE) mull technique,
Chemical reduction method, ion sputtering process, high-temperature sintering process or metal powder sintered method.
5. a kind of device collector of enhancing flowing electrode capacitance deionization performance according to claim 4, feature
It is, the method for collector supported catalyst are as follows:
(1) it pre-processes:
By the aqueous hydrochloric acid solution ultrasound 3-60min of collector substrate 0.1-5mol/L, acetone, ethyl alcohol, deionized water surpass respectively
Sound 10-60min is pre-processed, and spare after dry 3-24h at 25-100 DEG C；
(2) preparation of solution:
By one of nickel, cobalt, manganese, copper, iron, tungsten, the metal hydrochloride of molybdenum, nitrate, sulfate, carbonate or acetate or
It is several to be dissolved in deionized water, form the single or mixed salt solution 1 that concentration of metal ions is 0.01-1mol/L；
(3) load of catalyst:
(electrodeposition process) by step (2) solution 1 and step (1) in clean collector substrate in current density be 0.5-10A/
dm2Under constant current or voltage is to carry out catalyst load by electro-deposition 3-100min under 0.5-10V constant pressure；Or
(hydrothermal synthesis method) by step (2) solution 1 and step (1) in clean collector substrate to be transferred to liner be polytetrafluoro
In the autoclave of ethylene, in an oven using hydrothermal synthesis method, 5-24h is reacted at 80-200 DEG C；
(4) it cleans, dry:
Collector after step (3) load is taken out, it is dry with deionized water repeated flushing 3-5 times, and at 60-100 DEG C
After 3-24h, the anode collector of supported catalyst is obtained, catalyst unit area load capacity is 0.05~200mg/cm2；
(5) prepared by cathode current collector:
Step (1)~(4) are repeated, obtain the cathode current collector of supported catalyst, catalyst unit area load capacity is 0.05~
200mg/cm2。
6. a kind of device of enhancing flowing electrode capacitance deionization performance, described device includes water treatment room, cation-exchange membrane,
Anion-exchange membrane flows electrode chamber, anode collector, cathode current collector, end plate, which is characterized in that the anode collector
It is any one of Claims 1 to 5 collector for any one of Claims 1 to 5 collector or cathode current collector, or
Yin, yang the two poles of the earth collector is any one of Claims 1 to 5 collector.
7. a kind of method of enhancing flowing electrode capacitance deionization performance, which is characterized in that the method is to FCDI device
Collector supported catalyst.
8. a kind of method of enhancing flowing electrode capacitance deionization performance according to claim 7, which is characterized in that described
Method is negative to anode collector supported catalyst, or to cathode current collector supported catalyst, or to yin, yang the two poles of the earth collector
Carried catalyst.
9. a kind of method of enhancing flowing electrode capacitance deionization performance according to claim 7 or 8, which is characterized in that
The method of collector supported catalyst such as claim 4 or 5 the methods.
10. a kind of method of enhancing flowing electrode capacitance deionization performance according to claim 7~9, which is characterized in that
The method is the collector supported catalyst to FCDI device, recycles the Actidose that flowing electrode is 1-200g/L,
Under the constant pressure that voltage is 1-10V or current density is 0.1-50A/m2Under constant current, the solution in water treatment room is purified.
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| CN111003762A (en) * | 2019-12-31 | 2020-04-14 | 南京瑜铨环保技术有限公司 | Electric deionizing device |
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