KR101847689B1 - Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same - Google Patents
Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same Download PDFInfo
- Publication number
- KR101847689B1 KR101847689B1 KR1020150130348A KR20150130348A KR101847689B1 KR 101847689 B1 KR101847689 B1 KR 101847689B1 KR 1020150130348 A KR1020150130348 A KR 1020150130348A KR 20150130348 A KR20150130348 A KR 20150130348A KR 101847689 B1 KR101847689 B1 KR 101847689B1
- Authority
- KR
- South Korea
- Prior art keywords
- acac
- chelate compound
- metal chelate
- tfa
- metal
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/56—Polyamides, e.g. polyester-amides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
Abstract
The present invention relates to a water treatment membrane including a water treatment membrane, a method for producing the same, and a water treatment membrane.
Description
The present invention provides a water treatment module including a water treatment membrane, a method for producing the same, and a water treatment membrane.
Due to the serious pollution and water shortage in recent years, it is urgent to develop new water resources. Studies on the pollution of water quality are aiming at the treatment of high quality living and industrial water, various domestic sewage and industrial wastewater, and interest in the water treatment process using the separation membrane having the advantage of energy saving is increasing. In addition, the accelerated enforcement of environmental regulations is expected to accelerate the activation of membrane technology. Conventional water treatment process is difficult to meet the regulations that are strengthened, but membrane technology is expected to become a leading technology in the water treatment field because it guarantees excellent treatment efficiency and stable treatment.
Liquid separation is classified into micro filtration, ultrafiltration, nano filtration, reverse osmosis, sedimentation, active transport and electrodialysis depending on the pores of the membrane. Among them, the reverse osmosis method refers to a process of desalting using a semi-permeable membrane which is permeable to water but impermeable to salt. When high-pressure water containing salt is introduced into one side of the semipermeable membrane, Will come out on the other side with low pressure.
In recent years, approximately 1 billion gal / day of water has been subjected to dechlorination through the reverse osmosis process. Since the first reverse osmosis process using the reverse osmosis in the 1930s was announced, many of the semi- Research was conducted. Among them, cellulose-based asymmetric membranes and polyamide-based composite membranes have become mainstream in commercial success. The cellulosic membranes developed at the beginning of the reverse osmosis membrane have various drawbacks such as narrow operating pH range, high temperature deformation, high cost of operation due to high pressure, and vulnerability to microorganisms Is a rarely used trend.
On the other hand, the polyamide-based composite membrane is formed by forming a polysulfone layer on a nonwoven fabric to form a microporous support, and immersing the microporous support in an aqueous solution of m-phenylenediamine (hereinafter referred to as mPD) And then the resultant is immersed or coated in an organic solution of triMesoyl Chloride (hereinafter referred to as TMC) to form a polyamide active layer by interfacial polymerization with the mPD layer in contact with TMC. By contacting the nonpolar solution with the polar solution, the polymerization takes place at the interface only and forms a very thin polyamide layer. The polyamide-based composite membrane has higher stability against pH change, can operate at lower pressure, and has a higher salt removal rate than conventional cellulose-based asymmetric membranes, and is currently a mainstream of water treatment membranes.
Studies on increasing the salt removal rate and permeate flow rate of such polyamide composite membranes have been continuously carried out.
The present specification intends to provide a water treatment membrane having improved performance and a method for manufacturing the same.
An embodiment of the present disclosure includes a porous support; And a polyamide active layer provided on the porous support,
The polyamide active layer comprises (1) a first metal chelate compound comprising a metal atom or metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or metal ion and a carboxylate ligand, Thereby providing a water treatment separation membrane containing
One embodiment of the present disclosure relates to a method of preparing a porous support, comprising: preparing a porous support; And forming a polyamide active layer on the porous support using interfacial polymerization of an organic solution containing an aqueous solution containing an amine compound and an acyl halide compound,
Wherein at least one of the aqueous solution and the organic solution comprises (1) a first metal chelate compound comprising a metal atom or a metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or a metal ion and a carboxylate ligand 2 metal chelate compound.
One embodiment of the present disclosure provides a water treatment module comprising at least one water treatment separation membrane.
The manufacturing method according to one embodiment of the present specification enables the production of a water treatment separation membrane of excellent performance by a simple manufacturing process.
The water treatment separator according to one embodiment of the present invention is advantageous in that it has excellent permeation flow rate and excellent salt removal rate at the same time.
The water treatment separator according to one embodiment of the present invention can achieve a high permeate flow rate while minimizing the decrease of the salt removal rate.
1 shows a water treatment separator according to an embodiment of the present invention.
When a member is referred to herein as being "on " another member, it includes not only a member in contact with another member but also another member between the two members.
Whenever a component is referred to as "comprising ", it is understood that it may include other components as well, without departing from the other components unless specifically stated otherwise.
The present inventors have repeatedly conducted studies to improve the performance of the polyamide active layer of the water treatment separation membrane, thereby completing the present invention. Specifically, the present inventors confirmed that when the two different metal chelate compounds are contained in the polyamide active layer, a good permeation flow rate can be ensured while minimizing the decrease of the salt removal rate. Specifically, it has been found that when a polyamide active layer is formed by interfacial polymerization together with two different metal chelate compounds, it is possible to produce a water treatment separation membrane having excellent performance.
Hereinafter, the present invention will be described in more detail.
An embodiment of the present disclosure includes a porous support; And a polyamide active layer provided on the porous support,
The polyamide active layer comprises (1) a first metal chelate compound comprising a metal atom or metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or metal ion and a carboxylate ligand, Thereby providing a water treatment separation membrane containing
The first metal chelate compound and the second metal chelate compound may be included as additives in the formation of the polyamide active layer through interfacial polymerization to control the pore size of the polymer matrix of the polyamide active layer. Specifically, the first metal chelate compound and the second metal chelate compound are bonded to a part of the hydrated acyl halide compound contained in the organic solution by gravity such as hydrogen bonding to form a network structure of a polyamide polymer formed by interfacial polymerization It is possible to form a large part of the pores of the honeycomb structure. Through this, the permeation flow rate of the water treatment separation membrane can be increased. Further, the first metal chelate compound and the second metal chelate compound have different volumes, and the performance of the water treatment separation membrane can be controlled by controlling the content of each of the first metal chelate compound and the second metal chelate compound and the content ratio of the two metal chelate compounds.
According to one embodiment of the present invention, the mass ratio of the first metal chelate compound and the second metal chelate compound in the polyamide active layer may be 7: 1 to 200: 1. Specifically, the mass ratio of the first metal chelate compound and the second metal chelate compound in the polyamide active layer may be 7: 1 to 100: 1, or 10: 1 to 100: 1. The mass ratio of the first metal chelate compound and the second metal chelate compound in the polyamide active layer may be 10: 1 to 25: 1 or 10: 1 to 20: 1.
In the present specification, the mass ratio of the first metal chelate compound and the second metal chelate compound can be obtained by using NMR for a representative element of the substituent of the molecular structure. In one example, when the first metal chelate compound and the second metal chelate compound are fluorinated, they may be measured using 19 F NMR. In this case, measurements using 19 F NMR can be performed using Agilent
According to an embodiment of the present invention, the volume of the polyamide active layer pores to which the first metal chelate compound is bonded may be 8 times or more and 15 times or less the volume of the polyamide active layer pores containing no additive.
According to an embodiment of the present invention, the volume of the polyamide active layer pores to which the second metal chelate compound is bonded may be 3 to 7 times the volume of the polyamide active layer pores containing no additive.
In the present specification, the volumes of the first metal chelate compound and the second metal chelate compound can be obtained by a method of calculating a connolly surface. Specifically, the method of calculating a connolly surface is a method of obtaining the surface area of a radius of a van der Waals surface using a van der Waals diameter. In this specification, the volume of a molecule was determined using a Connolly radius of 1 ohm Strong using a Material Studio 7.0 program.
According to one embodiment of the present disclosure, the volume of the polyamide active layer void without additives may be equal to the volume of the TMC-OH in which the acyl halide functionality of the TMC is replaced by the carboxylic acid, and the volume of the TMC-OH Can be 38 A < 3 > Furthermore, according to an embodiment of the present invention, the volume of the polyamide active layer pore to which the first metal chelate compound is bonded may be equal to the volume of the first metal chelate compound. According to an embodiment of the present invention, the volume of the polyamide active layer pore to which the second metal chelate compound is bonded may be the same as the volume of the second metal chelate compound.
According to one embodiment of the present invention, the metal atom or the metal ion of the first metal chelate compound and the second metal chelate compound may be selected from group 2 or group 13 of the periodic table, respectively. Specifically, according to one embodiment of the present invention, the metal atom or the metal ion of the first metal chelate compound and the second metal chelate compound may be selected from Group 2 of the periodic table. More specifically, according to one embodiment of the present invention, the metal atom or the metal ion of the first metal chelate compound and the second metal chelate compound may be any metal atom or metal ion of Mg, Ca, and Sr have.
According to one embodiment of the present disclosure, the ligand of the first metal chelate compound may be a fluorinated diketonate.
According to one embodiment of the present disclosure, the diketonate may be a beta-diketonate. Specifically, according to one embodiment of the present disclosure, the diketonate may be a fluorinated beta-diketonate.
According to one embodiment of the present disclosure, the ligand of the second metal chelate compound may be a fluorinated carboxylate.
In the present specification, the fluorination may be at least one -F or -CF 3 bonded.
According to an exemplary embodiment of the present disclosure, the first metal chelate compound is Al (acac) 3, Al ( F 6 acac) 3, Ga (acac) 3, Ga (F 6 acac) 3, In (acac) 3, In (F 6 acac) 3, Be (acac) 2, Be (F 6 acac) 2, Ca (acac) 2, Ca (F 6 acac) 2, Li (acac), Mg (acac) 2, Mg (F 6 acac) 2 , Sr (acac) 2, and Sr (F 6 acac) 2 .
In the present specification, the acac means acetylacetonate.
According to an exemplary embodiment of the present disclosure, the second metal chelate compound is Al (ac) 3, Al ( tfa) 3, Ga (ac) 3, Ga (tfa) 3, In (ac) 3, In (tfa) 3, Be (ac) 2, Be (tfa) 2, Ca (ac) 2, Ca (tfa) 2, Li (ac) 2, Li (tfa) 2, Mg (ac) 2, Mg (tfa) 2, Sr (ac) 2, and Sr (tfa) 2 .
In the present specification, ac means acetate, and tfa means trifluoroacetate.
An embodiment of the present invention provides a method of manufacturing the water treatment separation membrane.
One embodiment of the present disclosure relates to a method of preparing a porous support, comprising: preparing a porous support; And forming a polyamide active layer on the porous support using interfacial polymerization of an organic solution containing an aqueous solution containing an amine compound and an acyl halide compound,
Wherein at least one of the aqueous solution and the organic solution comprises (1) a first metal chelate compound comprising a metal atom or a metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or a metal ion and a carboxylate ligand 2 metal chelate compound.
According to one embodiment of the present invention, the content of the first metal chelate compound in the aqueous solution or the organic solution may be 0.04 wt% or more and 0.12 wt% or less. Specifically, the content of the first metal chelate compound in the aqueous solution or the organic solution may be 0.04 wt% or more and 0.1 wt% or less, or 0.04 wt% or more and 0.095 wt% or less.
According to an embodiment of the present invention, the content of the second metal chelate compound in the aqueous solution or the organic solution may be 0.00025 wt% or more and 0.015 wt% or less. Specifically, the content of the second metal chelate compound in the aqueous solution or the organic solution is from 0.00025 wt% to 0.01 wt%, or the content of the second metal chelate compound in the aqueous solution or the organic solution is from 0.0005 wt% to 0.01 wt% or less.
According to one embodiment of the present invention, the weight ratio of the first metal chelate compound to the second metal chelate compound in the aqueous solution or the organic solution may be from 10: 1 to 25: 1. Specifically, according to one embodiment of the present invention, the weight ratio of the first metal chelate compound to the second metal chelate compound in the aqueous solution or the organic solution may be from 10: 1 to 20: 1.
According to one embodiment of the present disclosure, the first metal chelate compound and the second metal chelate compound may be contained in an aqueous solution.
In the production method according to one embodiment of the present invention, the first metal chelate compound and the second metal chelate compound are the same as described above.
1 shows a water treatment separator according to an embodiment of the present invention. 1 illustrates a water treatment separation membrane sequentially provided with a
According to one embodiment of the present invention, the porous support may be formed with a coating layer of a polymer material on a nonwoven fabric. Examples of the polymeric material include polymeric materials such as polysulfone, polyethersulfone, polycarbonate, polyethylene oxide, polyimide, polyetherimide, polyetheretherketone, polypropylene, polymethylpentene, polymethyl chloride and polyvinylidene fluoride Rides, and the like may be used, but the present invention is not limited thereto. Specifically, polysulfone may be used as the polymer material.
According to one embodiment of the present invention, the polyamide active layer can be formed through an interfacial polymerization of an aqueous solution containing an amine compound and an organic solution containing an acyl halide compound. Specifically, the polyamide active layer is formed by forming an aqueous solution layer containing an amine compound on a porous support; And contacting the organic solvent containing an organic solvent with an acyl halide compound on an aqueous solution layer containing the amine compound to form a polyamide active layer.
When the aqueous solution containing the amine compound is brought into contact with the organic solution, the amine compound coated on the surface of the porous support reacts with the acyl halide compound to form polyamide by interfacial polymerization, and adsorbed on the microporous support, . In the contact method, a polyamide active layer may be formed by a method such as dipping, spraying, or coating.
According to one embodiment of the present invention, a method of forming an aqueous solution layer containing an amine compound on the porous support is not particularly limited, and any method can be used as long as it is capable of forming an aqueous solution layer on a support. Specifically, a method of forming an aqueous solution layer containing an amine compound on the porous support includes spraying, coating, dipping, dropping, and the like.
At this time, the aqueous solution layer may be further subjected to a step of removing an aqueous solution containing an excess of the amine compound, if necessary. The aqueous solution layer formed on the porous support may be unevenly distributed when the aqueous solution present on the support is excessively large. If the aqueous solution is unevenly distributed, a non-uniform polyamide active layer may be formed by subsequent interfacial polymerization have. Therefore, it is preferable to remove the excess aqueous solution after forming the aqueous solution layer on the support. The removal of the excess aqueous solution is not particularly limited, but can be performed using, for example, a sponge, an air knife, nitrogen gas blowing, natural drying, or a compression roll.
According to one embodiment of the present invention, in the aqueous solution containing the amine compound, the amine compound is not limited as long as it is an amine compound used in the preparation of a water treatment separation membrane, but specific examples include m-phenylenediamine, p - phenylenediamine, 1,3,6-benzenetriamine, 4-chloro-1,3-phenylenediamine, 6-chloro-1,3-phenylenediamine, 3- Or a mixture thereof.
According to one embodiment of the present disclosure, the acyl halide compounds include, but are not limited to, for example, aromatic compounds having 2 to 3 carboxylic acid halides, such as trimethoyl chloride, isophthaloyl chlorides, Terephthaloyl chloride, and mixtures of at least one compound selected from the group consisting of terephthaloyl chloride.
According to one embodiment of the present invention, the organic solvent may be an aliphatic hydrocarbon solvent, for example, a hydrophobic liquid such as Freon and a water-immiscible hydrophobic liquid such as hexane, cyclohexane, heptane or alkane having 5 to 12 carbon atoms, An alkane having 5 to 12 carbon atoms and mixtures thereof such as IsoPar (Exxon), ISOL-C (SK Chem), and ISOL-G (Exxon) may be used.
According to one embodiment of the present invention, the water treatment separation membrane can be used as a microfiltration membrane, an ultrafiltration membrane, a nano filtration membrane or a reverse osmosis membrane, Can be used.
In addition, one embodiment of the present disclosure provides a water treatment module comprising at least one water treatment separation membrane.
The specific type of the water treatment module is not particularly limited, and examples thereof include a plate & frame module, a tubular module, a hollow & fiber module, or a spiral wound module. In addition, as long as the water treatment module includes the water treatment separation membrane according to one embodiment of the present invention, other structures and manufacturing methods are not particularly limited and general means known in the art can be employed without limitation have.
On the other hand, the water treatment module according to one embodiment of the present invention has excellent salt removal rate and permeation flow rate, and is excellent in chemical stability, and thus can be used for water treatment devices such as household / industrial water purification devices, sewage treatment devices, have.
Hereinafter, the present invention will be described in detail by way of examples with reference to the drawings. However, the embodiments according to the present disclosure can be modified in various other forms, and the scope of the present specification is not construed as being limited to the embodiments described below. Embodiments of the present disclosure are provided to more fully describe the present disclosure to those of ordinary skill in the art.
[Example]
16 wt% polysulfone (BASF, molecular weight (Mw): 62,300, PDI: 2.18) was added to DMF (N, N-dimethylformamide) solution to cast polysulfone, After obtaining a liquid phase, it was cast on a nonwoven fabric having a thickness of 95 탆 to 100 탆 made of polyester to a thickness of 45 탆 to 50 탆 to form a porous support.
An aqueous solution containing 2 wt% of mPD (m-phenylenediamine) and 0.05 wt% of a strontium additive containing Sr (F 6 acac) 2 and Sr (tfa) 2 was prepared. After immersing the porous support in the aqueous solution for 2 minutes, the excess aqueous solution on the porous support was removed using a roller of 25 psi pressure and dried at room temperature for 1 minute. Then, the coated porous support was immersed in an organic solvent containing 0.1 v / v% TMC (Trimesoyl chloride) for 1 minute in an Isol C solvent (Iso Paraffins, SKC Corp.) And dried in an oven for 10 minutes. The separation membrane obtained by the above method was washed with 0.2 wt% sodium carbonate aqueous solution at room temperature for 2 hours or more, and then washed with distilled water to prepare a polyamide active layer having a thickness of 200 μm to prepare a water treatment separation membrane.
The water treatment membranes of Examples 1 to 4 were prepared as shown in Table 1 below by adjusting the contents of Sr (F 6 acac) 2 and Sr (tfa) 2 of the strontium additive.
The content of Sr (F 6 acac) 2 and Sr (tfa) 2 was measured by 19 F NMR and the water content was measured using Karl-Fisher equipment. Specifically, the ratio between Sr (F 6 acac) 2 and Sr (tfa) 2 was calculated by 19 F NMR spectrum. That is, the value of the peak area of -CF 3 of Sr (tfa) 2 at -75.63 ppm was divided by 6, the total number of F of -CF 3 in the structure, and that of Sr (F 6 acac) 2 at -76.74 ppm the value of the peak areas of the CF 3 F structure were obtained in the -CF 3 molar ratio of 12 divided by the total number of F. The molar ratios thus obtained were multiplied by the molecular weights of the respective structures (Sr (F 6 acac) 2 : MW 501.88) and Sr (tfa) 2 : MW 313.88).
content
(wt%)
content
(wt%)
(%)
(GPD)
In order to measure the salt removal rate and the permeate flow rate in Table 1, the initial salt removal rate and the initial permeate flow rate were measured at a flow rate of 4500 mL / min at 32,000 ppm NaCl at 25 ° C. The reverse osmosis membrane cell apparatus used for the membrane evaluation was a plate Permeable cell, a high-pressure pump, a reservoir, and a cooling device. The structure of the planar type transmissive cell was a cross-flow type with an effective permeation area of 140 cm 2 . After the washed membrane was installed in the permeation cell, preliminary operation was performed for about 1 hour by using the third distilled water for stabilization of the evaluation equipment. Thereafter, the apparatus was operated for about 1 hour until the pressure and water permeability reached a steady state by replacing with a 32,000 ppm NaCl aqueous solution. The amount of water permeated for a predetermined time was measured to calculate the flux of the permeate, (Conductivity Meter) was used to calculate the salt removal rate by analyzing the salt concentration before and after permeation.
In Table 1, RSD means Relative Standard Deviation and SD means Standard Deviation. Also, the GPD means the permeate flow rate, which means gallon per day.
Generally, when a polyamide active layer is prepared by interfacial polymerization only between TMC and mPD to prepare a water treatment separation membrane, the salt removal rate is about 99.5%, and the permeation flow rate is about 10 to 15 GPD. It can be seen that the water separator manufactured according to the present invention realizes improved performance. Specifically, according to the results shown in Table 1, the permeation flow rate is improved as the content of the first metal chelate compound is increased. According to the results shown in Table 1, the salt removal rate is improved as the content of the second metal chelate compound is increased. Accordingly, the water treatment separator according to one embodiment of the present invention can appropriately control the content ratio of the first metal chelate compound and the second metal chelate compound to produce a water treatment separation membrane that achieves a high permeation flow rate and an excellent salt removal rate Do.
100: Nonwoven fabric
200: Porous support
300: polyamide active layer
400: brine
500: Purified water
600: concentrated water
Claims (19)
The polyamide active layer comprises (1) a first metal chelate compound comprising a metal atom or metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or metal ion and a carboxylate ligand, As the water treatment separation membrane,
The second metal chelate compound is Al (ac) 3, Al ( tfa) 3, Ga (ac) 3, Ga (tfa) 3, In (ac) 3, In (tfa) 3, Be (ac) 2, Be (tfa) 2, Ca (ac ) 2, Ca (tfa) 2, Li (ac) 2, Li (tfa) 2, Mg (ac) 2, Mg (tfa) 2, Sr (ac) 2 and Sr (tfa ) ≪ 2 & gt ;.
Wherein the mass ratio of the first metal chelate compound to the second metal chelate compound in the polyamide active layer is from 7: 1 to 200: 1.
Wherein the volume of the polyamide active layer pore to which the first metal chelate compound is bonded is 8 times or more and 15 times or less the volume of the polyamide active layer pore not containing the first metal chelate compound.
Wherein the volume of the polyamide active layer pores to which the second metal chelate compound is bonded is 3 to 7 times the volume of the polyamide active layer pores containing no second metal chelate compound.
Wherein the metal atom or the metal ion of the first metal chelate compound is selected from Group 2 or Group 13 of the periodic table.
Wherein the ligand of the first metal chelate compound is fluorinated diketonate.
The first metal chelate compound is Al (acac) 3, Al ( F 6 acac) 3, Ga (acac) 3, Ga (F 6 acac) 3, In (acac) 3, In (F 6 acac) 3, Be (acac) 2, Be (F 6 acac) 2, Ca (acac) 2, Ca (F 6 acac) 2, Li (acac), Mg (acac) 2, Mg (F 6 acac) 2, Sr (acac) 2 and Sr (F 6 acac) 2 .
Comprising the step of forming a polyamide active layer on the porous support using interfacial polymerization of an aqueous solution containing an amine compound and an organic solution containing an acyl halide compound,
Wherein at least one of the aqueous solution and the organic solution comprises (1) a first metal chelate compound comprising a metal atom or a metal ion and a diketonate ligand, and (2) a second metal chelate compound comprising a metal atom or a metal ion and a carboxylate ligand 2 < / RTI > metal chelate compound,
The second metal chelate compound is Al (ac) 3, Al ( tfa) 3, Ga (ac) 3, Ga (tfa) 3, In (ac) 3, In (tfa) 3, Be (ac) 2, Be (tfa) 2, Ca (ac ) 2, Ca (tfa) 2, Li (ac) 2, Li (tfa) 2, Mg (ac) 2, Mg (tfa) 2, Sr (ac) 2 and Sr (tfa ) ≪ 2 & gt ;.
Wherein the content of the first metal chelate compound in the aqueous solution or the organic solution is 0.04 wt% or more and 0.12 wt% or less.
Wherein the content of the second metal chelate compound in the aqueous solution or the organic solution is 0.00025 wt% or more and 0.015 wt% or less.
Wherein the weight ratio of the first metal chelate compound to the second metal chelate compound in the aqueous solution or the organic solution is from 7: 1 to 200: 1.
Wherein the metal atom or the metal ion of the first metal chelate compound is selected from group 2 or group 13 of the periodic table, respectively.
Wherein the ligand of the first metal chelate compound is fluorinated diketonate.
The first metal chelate compound is Al (acac) 3, Al ( F 6 acac) 3, Ga (acac) 3, Ga (F 6 acac) 3, In (acac) 3, In (F 6 acac) 3, Be (acac) 2, Be (F 6 acac) 2, Ca (acac) 2, Ca (F 6 acac) 2, Li (acac), Mg (acac) 2, Mg (F 6 acac) 2, Sr (acac) 2 and Sr (F 6 acac) 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130348A KR101847689B1 (en) | 2015-09-15 | 2015-09-15 | Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130348A KR101847689B1 (en) | 2015-09-15 | 2015-09-15 | Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170032693A KR20170032693A (en) | 2017-03-23 |
| KR101847689B1 true KR101847689B1 (en) | 2018-05-24 |
Family
ID=58496165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150130348A KR101847689B1 (en) | 2015-09-15 | 2015-09-15 | Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101847689B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120285890A1 (en) | 2010-11-10 | 2012-11-15 | Jeffrey Alan Koehler | Hybrid tfc ro membranes with non-metallic additives |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990019008A (en) | 1997-08-28 | 1999-03-15 | 한형수 | Manufacturing method of high flow rate reverse osmosis membrane |
-
2015
- 2015-09-15 KR KR1020150130348A patent/KR101847689B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120285890A1 (en) | 2010-11-10 | 2012-11-15 | Jeffrey Alan Koehler | Hybrid tfc ro membranes with non-metallic additives |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170032693A (en) | 2017-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101733264B1 (en) | Polyamide water-treatment membranes having properties of high salt rejection and high flux and manufacturing method thereof | |
| KR101432219B1 (en) | Reverse osmosis membrane | |
| KR20120140214A (en) | Reveres osmosis membrane having properties of high salt rejection and high flux and manufacturing method thereof | |
| KR101659122B1 (en) | Polyamide water-treatment membranes having properies of high salt rejection and high flux and manufacturing method thereof | |
| KR20150079213A (en) | Reverse-osmosis membrane having excellent pressure-resistant and method for manufacturing thereof | |
| KR102072877B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR102286141B1 (en) | Method for manufacturing membrane and membrane manufactured thereby | |
| KR102041657B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR101847689B1 (en) | Water-treatment membrane, method for manufacturing for the same, and water treatment module comprising the same | |
| KR101946983B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR102230992B1 (en) | Water treatment membrane and method for preparing thereof | |
| KR101716045B1 (en) | Manufacturing method for polyamide watertreatment membranes having properies of high flux and water-treatment membranes manufactured by using the same | |
| KR102067861B1 (en) | Composition for preparing reverse osmosis membrane, method for preparing reverse osmosis membrane using the same, and reverse osmosis membrane and water treatment module | |
| KR102042299B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR20190088429A (en) | Method for preparing water treatment membrane and water treatment membrane prepared thereby | |
| KR102524361B1 (en) | Method of manufacturing membrane, membrane and water treatment module | |
| KR101778351B1 (en) | Method for manufacturing water treatment separating membrane and water treatment separating membrane manufactured by the same | |
| KR102660173B1 (en) | Method of manufacturing membrane, membrane and water treatment module | |
| KR102155930B1 (en) | Water treatment membrane and method for manufacturing the same | |
| KR102288033B1 (en) | Method for manufacturing water-treatment membrane and water-treatment membrane manufactured thereby | |
| KR102196618B1 (en) | Method for preparing water treatment membrane and water treatment membrane prepared thereof | |
| KR101520150B1 (en) | Reverse osmosis membrane with high flux and manufacturing method thereof | |
| KR20210095476A (en) | Manufacturing method for water-treatment membrane and the water-treatment membrane manufactured by using same | |
| KR102002364B1 (en) | Method for manufacturing water-treatment membrane, water-treatment membrane manufactured by thereof, and water treatment module comprising membrane | |
| KR20210095428A (en) | Manufacturing method for water-treatment membrane and the water-treatment membrane manufactured by using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant |