KR20200083326A - Method of separating mineral selectively from natural mineral resource and composition separated therefrom - Google Patents

Abstract

The present invention relates to a method for selectively separating mineral, which includes: (a) performing primarily electrodialysis with respect to mineral seawater or seawater-treated water to obtain monovalent cation concentrated-water and divalent cation concentrated-water, respectively; (b) allowing the divalent cation concentrated water obtained in step (a) to pass through a cation exchange resin to obtain mineral concentrated water in which a divalent cation, which is contained in the divalent cation concentrated water, is substituted with a monovalent cation; and (c) secondarily performing electrodialysis with respect to the concentrated mineral water obtained in steps (c) and (b) to obtain a primary cationic mineral composition and a trace mineral composition, respectively. Various mineral compositions finally obtained in the separating method may be usefully used as various compositions such as a cosmetic composition, a food composition, and a pharmaceutical composition.

Description

METHOD OF SEPARATING MINERAL SELECTIVELY FROM NATURAL MINERAL RESOURCE AND COMPOSITION SEPARATED THEREFROM

The present invention relates to a method for selectively separating minerals from mineral seawater and seawater treated water, which are natural mineral resources, various mineral compositions finally obtained by the separation method, and various uses thereof.

Sea water is a huge water resource that occupies about 97% of the earth's surface (see the Korea Rural Community Corporation data), and refers to water that can be taken from the sea, including salt (average: 3.5%). Seawater can be subdivided in various ways, such as surface water, deep ocean water, and lava seawater, depending on the location of intake. These sea waters are rich in trace minerals such as sodium, potassium, calcium, and magnesium, and trace minerals such as iron and zinc, which are called natural mineral resources.

Deep ocean water is a clean water resource that exists below 200m below the sunlight, so it is less likely to enter pollutants from land or air, maintains low temperatures throughout the year, and is stable because it is formed over thousands of years. In addition, there are almost no organic substances and pathogens, and 70 or more kinds of minerals such as calcium, potassium, and sodium are contained. Some of these minerals are known to have excellent effects on free radical scavenging. In addition, the mineral composition of sea water and deep ocean water is Mg:Ca:K = 3:1:1, and the body fluid and mineral composition are similarly composed, and because they exist in water in the form of ions, they can be quickly absorbed into the body.

For this reason, studies are being actively conducted to increase the utilization by selectively separating or purifying desired minerals among rich minerals contained in seawater. A number of patents describe a method for producing mineral salts or mineral water from deep ocean water using electrolysis, electrodialysis or reverse osmosis membranes. However, this simply relates to a method for producing water, beverage or salt in which excess salt (NaCl) is removed in order to alleviate the salty taste of deep ocean water, or a process for separating monovalent ions from divalent ions. Therefore, the above technique has limitations in preparing a mineral composition containing a large amount of the specific mineral by selectively separating a specific mineral other than sodium, that is, magnesium, calcium, or potassium.

Particularly, there is an attempt to separate minerals by electrodialysis and evaporation concentration in the registered patent KR 10-0899012, but since the divalent cation selective exchange membrane is not currently commercialized, it is difficult to actual industrialization, and the cost is required because the electrodialysis device must be used twice. There are difficulties in industrialization in terms of enemies. In addition, since sodium ions are precipitated and removed as poorly soluble salts through electrolysis, sodium ions cannot be obtained as mineral compositions.

Minerals lost in various water treatment processes play an important role in maintaining health in the body. For example, antagonism between minerals, and representatively sodium and potassium, play a large role in maintaining blood pressure and water content in the body while maintaining mutual balance. Magnesium and calcium also play an important role in maintaining mutual mineral content, and when this balance is broken, adult diseases such as hypertension, diabetes, and metabolic syndrome are caused. In addition, trace minerals also play an important role in the human body. Selenium serves to remove free radicals, molybdenum is involved in nitrogen metabolism, and iron is essential for hemoglobin, the oxygen source.

As such, minerals are a very important factor for the human body, and when it is insufficient, it causes deficiency, but when it is excessive, it causes an excess, so it is important to consume the proper amount necessary for the human body. However, minerals that are lacking in the body are different depending on various factors such as a person's health condition, physical characteristics, eating habits, and genetics, so minerals that can be selectively separated can be supplied with minerals suitable for each person's characteristics. Therefore, if each mineral component can be selectively separated from natural mineral resources containing various active minerals, it is possible to easily supply appropriate minerals in an easily absorbable ion state for each individual.

The present invention comprises the steps of (a) primary electrodialysis of mineral seawater or seawater-treated water to obtain monovalent cation concentrated water and divalent cation concentrated water, respectively; (b) passing the divalent cation concentrated water obtained in the step (a) through a cation exchange resin to obtain mineral concentrated water in which the divalent cations in the divalent cation concentrated water are substituted with monovalent cations; And (c) secondary electrodialysis of the mineral concentrate obtained in the step (b) to obtain a primary cationic mineral composition and a trace mineral composition, respectively. Want to provide

However, the technical problem to be achieved by the present invention is not limited to the problems mentioned above, and other problems not mentioned above will be clearly understood by those skilled in the art through the contents described below.

The present invention comprises the steps of (a) primary electrodialysis of mineral seawater or seawater-treated water to obtain monovalent cation concentrated water and divalent cation concentrated water, respectively; (b) passing the divalent cation concentrated water obtained in the step (a) through a cation exchange resin to obtain mineral concentrated water in which the divalent cations in the divalent cation concentrated water are substituted with monovalent cations; And (c) secondary electrodialysis of the mineral concentrate obtained in the step (b) to obtain a primary cationic mineral composition and a trace mineral composition, respectively. do.

In the step (a), the mineral seawater or seawater-treated water may be any one selected from the group consisting of surface water, deep ocean water, and lava seawater.

In the steps (a) to (c), the monovalent cation is sodium ion (Na ⁺ ) or potassium ion (K ⁺ ), and the divalent cation may be magnesium ion (Mg ²⁺ ) or calcium ion (Ca ²⁺ ). have.

In step (b), the ion exchange resin may be a zeolite or a synthetic polymer cation exchange resin.

In the step (b), in the mineral concentrated water, the total concentration of divalent cations in the divalent cation concentrated water may be reduced, and the total concentration of monovalent cations may be increased.

In the step (c), the trace mineral composition may contain one or more trace minerals selected from the group consisting of silica, iron, vanadium, selenium, molybdenum, copper, phosphorus and iodine.

(d) evaporating and condensing the monovalent cation-concentrated water obtained in the step (a) to further obtain a sodium salt and a potassium mineral composition, respectively.

In one embodiment of the present invention, the mineral seawater or seawater treated water is obtained by primary electrodialysis, and the saltiness is increased as monovalent cation concentrated water, wherein the monovalent cation concentrated water is based on 5500 to 6000 parts by weight of sodium ions. , 300-400 parts by weight of potassium ions, 400-500 parts by weight of magnesium ions, and 100-200 parts by weight of calcium ions.

In another embodiment of the present invention, mineral seawater or seawater-treated water is obtained by primary electrodialysis, and is a divalent cation concentrated water with increased sweet taste, wherein the divalent cation concentrated water is based on 900 to 1000 parts by weight of magnesium ions. , 100 to 200 parts by weight of sodium ions, 1 to 15 parts by weight of potassium ions, 900 to 1000 parts by weight of magnesium ions, and 200 to 300 parts by weight of calcium ions.

The present invention relates to a method for selectively separating minerals from natural mineral resources, mineral seawater and seawater treated water, comprising: (a) a primary electrodialysis step; (b) a cation exchange resin step for divalent cation concentrated water obtained from the first electrodialysis step; And (c) characterized in that it comprises a secondary electrodialysis step, it is possible to selectively separate each of the primary cationic mineral composition and the trace mineral composition. In addition, if (d) selectively comprises an evaporation and concentration step targeting the monovalent cation concentrated water obtained from the primary electrodialysis step, the potassium mineral composition can also be selectively separated. The various mineral compositions finally obtained by the separation method may be useful as various compositions such as cosmetic compositions, food compositions, and pharmaceutical compositions.

1 is a schematic diagram showing a method for selectively separating minerals from mineral seawater and seawater treated water, which are natural mineral resources, according to an embodiment of the present invention.
2 is a schematic diagram showing a method for selectively separating minerals from mineral seawater and seawater treated water, which are natural mineral resources, according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

The present invention comprises the steps of (a) primary electrodialysis of mineral seawater or seawater-treated water to obtain monovalent cation concentrated water and divalent cation concentrated water, respectively; (b) passing the divalent cation concentrated water obtained in the step (a) through a cation exchange resin to obtain mineral concentrated water in which the divalent cations in the divalent cation concentrated water are substituted with monovalent cations; And (c) secondary electrodialysis of the mineral concentrate obtained in the step (b) to obtain a primary cationic mineral composition and a trace mineral composition, respectively. do.

The term "monovalent cation" in the present specification means sodium ion (Na ⁺ ) or potassium ion (K ⁺ ), and the term "divalent cation" in this specification means magnesium ion (Mg ²⁺ ) or calcium ion ( Ca ²⁺ ).

First, the selective separation method of minerals according to the present invention includes the step of (1) step of obtaining a monovalent cation concentrate and a divalent cation concentrate by first electrodialysis of mineral seawater or seawater treated water. .

Specifically, the mineral seawater or seawater-treated water is a natural mineral resource, and refers to seawater or seawater-treated water containing various minerals, wherein seawater refers to a state taken from the sea, and seawater-treated water is the sea After being taken from, it means a state in which physical treatment is performed through sterilization or filtering treatment. More specifically, the mineral seawater or seawater-treated water may be any one selected from the group consisting of surface water, deep ocean water, and lava seawater.

The primary electrodialysis can be performed using a monovalent cation exchange membrane, through which monovalent cation concentrated water and divalent cation concentrated water can be respectively obtained. Both the monovalent cation-concentrated water and divalent cation-concentrated water may have a reduced total amount of cationic minerals compared to the mineral seawater or seawater-treated water.

However, the monovalent cation concentrated water may be an increased content of monovalent cations (sodium ions and potassium ions) based on the total content of cationic minerals, compared to the mineral seawater or seawater treated water, specifically, the The monovalent cation concentrated water may contain 300 to 400 parts by weight of potassium ions, 400 to 500 parts by weight of magnesium ions, and 100 to 200 parts by weight of calcium ions based on 5500 to 6000 parts by weight of sodium ions, and more specifically, 1 The cation concentrate water may contain 5500 to 6000 ppm of sodium ions, 300 to 400 ppm of potassium ions, 400 to 500 ppm of magnesium ions, and 100 to 200 ppm of calcium ions. As such, due to the high content of sodium and potassium ions and low content of magnesium and calcium ions, a sensory test of 9-point scale for taste perception was conducted for a total of 10 professional panelists. It is characterized by excellent turnover and reduced slippery taste.

In addition, the divalent cation concentrated water may be an increased content of divalent cations (magnesium ions and calcium ions) based on the total content of cation minerals, compared to the mineral seawater or seawater treated water. The divalent cation concentrate water may contain 100 to 200 parts by weight of sodium ions, 1 to 15 parts by weight of potassium ions, 900 to 1000 parts by weight of magnesium ions, and 200 to 300 parts by weight of calcium ions based on 900 to 1000 parts by weight of magnesium ions. More specifically, the divalent cation concentrate water may contain 100 to 200 ppm of sodium ions, 1 to 15 ppm of potassium ions, 900 to 1000 ppm of magnesium ions, and 200 to 300 ppm of calcium ions. As such, due to the low content of sodium and potassium ions and high content of magnesium and calcium ions, a sensory test of 9-point scale for taste perception was conducted for a total of 10 professional panels, while the sweetness compared to the dilution of mineral water in deep ocean water was high. It is characterized by excellent soft neck turning.

Next, in the selective separation method of minerals according to the present invention, the divalent cation concentrated water obtained in step (a) is passed through a cation exchange resin, so that the divalent cation in the divalent cation concentrated water is a monovalent cation. And obtaining the substituted mineral concentrated water (step (b)).

The cation exchange resin is for substituting the divalent cation with a monovalent cation, preferably zeolite or synthetic polymer cation exchange resin, and more preferably zeolite, but is not limited thereto. At this time, the zeolite (zeolite) has a microporous structure has a large surface area, it has the advantage of faster speed than the synthetic polymer cation exchange resin during the substitution reaction. Of course, the synthetic polymer cation exchange resin can also be made of a porous structure to increase the surface area, but based on the same size, there is a problem that the surface area is significantly smaller and the cost is higher than that of zeolite. In addition, the zeolite (zeolite) has a property of weakly binding to the cation, and has the advantage of easy regeneration and washing, it can be washed with sea water. In addition, the zeolite (zeolite) can function at the same time, it can act as a purified water to remove dust, colloids, etc. remaining in the sample or flowing from the outside.

Therefore, in the mineral concentrated water, the total concentration of divalent cations in the divalent cation concentrated water may be reduced, and the total concentration of monovalent cations may be increased.

Next, the selective separation method of minerals according to the present invention comprises the steps of (2) obtaining a primary cationic mineral composition and a trace mineral composition by secondary electrodialysis of the mineral concentrated water obtained in step (b) [(c) step] ].

The secondary electrodialysis can also be performed using a monovalent cation exchange membrane, through which a primary cation mineral composition and a trace mineral composition can be obtained, respectively. Both the primary cationic mineral composition and the trace mineral composition may have a reduced total amount of cationic mineral compared to the mineral concentrate. However, the primary cationic mineral composition may have an increased content of monovalent cations (sodium ions and potassium ions) based on the total content of cationic minerals, compared to the mineral concentrated water. Accordingly, in the trace mineral composition, the content of the monovalent cations (sodium ion and potassium ion) is reduced based on the total content of the cationic mineral, compared to the mineral concentrate, and the trace mineral content may be increased. Specifically, the trace mineral composition may contain one or more trace minerals selected from the group consisting of silica, iron, vanadium, selenium, molybdenum, copper, phosphorus and iodine. More specifically, the trace mineral composition is silica (Si) 0.1 ~ 0.5 ppm, iron (Fe) 0.1 ~ 0.5 ppm, vanadium (V) 0.01 ~ 0.1 ppm, selenium (Se) 5 ~ 12 ppm, molybdenum (Mo) 0.1 It may contain ~ 1 ppm, copper (Cu) 0.1 ~ 0.5 ppm, phosphorus (P) 0.01 ~ 0.1 ppm and iodine (I) 0.1 ~ 1 ppm.

Optionally, the selective separation method of minerals according to the present invention comprises the step of obtaining the sodium salt and potassium mineral composition respectively by evaporating and concentrating the monovalent cation concentrated water obtained in step (a) [(d) step]. do.

Both the sodium salt and the potassium mineral composition may have a reduced total amount of cationic mineral compared to the monovalent cation concentrated water. However, the sodium salt may be an increased content of sodium ions based on the total content of cationic minerals, compared to the monovalent cation concentrated water. In addition, the potassium mineral composition may be that the content of potassium ions is increased based on the total content of cationic minerals, compared to monovalent cation concentrated water.

Specifically, the sodium salt may contain 5500 to 5800 ppm of sodium ions, 0 to 50 ppm of potassium ions, 100 to 400 ppm of magnesium ions, and 50 to 250 ppm of calcium ions, and the potassium mineral composition may contain 5 to 150 sodium ions. ppm, potassium ion 100 to 350 ppm, magnesium ion 0 to 50 ppm and calcium ion 0 to 10 ppm.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as limited by these examples.

Example 1: Analysis of cationic mineral content in mineral seawater

Mineral seawater was prepared by taking surface water, deep ocean water, and lava seawater from the domestic sea, respectively, and the cationic mineral content was measured through an inductively coupled plasma spectroscopy (ICP-AES).

division Surface water Deep ocean water Lava seawater Cationic mineral
content
(ppm) Sodium ion 10500~11000 10500~11000 10500~11000 Potassium ion 350~500 350~500 350~500 Magnesium ion 1250~1400 1250~1400 1250~1400 Calcium ion 350~450 350~450 350~450

Example 2: From mineral seawater, monovalent and divalent cation concentrate water obtained through primary electrodialysis

(1) The surface layer water according to Example 1 was subjected to primary electrodialysis using a monovalent cation exchange membrane (CIMS, ASTOM) to obtain monovalent cation concentrated water and divalent cation concentrated water, respectively, and an inductively coupled plasma spectrometer (ICP). -AES), the cationic mineral content was measured.

division Surface water Monovalent cation concentrate Divalent cation concentrate Cationic mineral
content
(ppm) Sodium ion 10500~11000 5500~6000 100~200 Potassium ion 350~500 300~400 1~15 Magnesium ion 1250~1400 400~500 900~1000 Calcium ion 350~450 100~200 200~300

As shown in Table 2, it was confirmed that both the monovalent cation concentrated water and the divalent cation concentrated water had a reduced total amount of cationic minerals compared to the surface water. However, the monovalent cation concentrated water is found to have increased content of monovalent cations (sodium ions and potassium ions) based on the total content of cationic minerals, compared to the surface water, and the divalent cation concentrated water is a cationic mineral compared to the surface water. Based on the total content, it was confirmed that the content of divalent cations (magnesium ions and calcium ions) increased.

(2) The monovalent cation-concentrated water obtained in (1) of Example 2 was a mineral composition, and the improvement was evaluated by comparing the functionality of the deep seawater dilution solution prepared to have the same content of sodium ions and its functionality. The sensory evaluation of each sample was compared with a 9-point scale of sweetness, saltiness, bitterness, soft throat, and slipperiness by distilled water as 0 points by a panel of 10 experts. Progress was made on a 9-point scale.

division Monovalent cation concentrate Deep Ocean Water Dilution Cationic mineral
content
(ppm) Sodium ion 5500~6000 5500~6000 Potassium ion 300~400 150~250 Magnesium ion 400~500 600~700 Calcium ion 100~200 150~250

division Monovalent cation concentrate Dilution of deep ocean water* sweetness 2.8 1.7 Salty 8.5 7.2 bitter 3.3 3.4 Soft neck flip 6.4 4.8 Slippery taste 3.2 5.4 Overall preference 7.1 5.2

* Ocean deep water dilution: A solution of dilution of deep ocean water with the same monovalent cation concentration and sodium content

As shown in Tables 3 and 4, in the case of monovalent cation concentrate water, due to the high content of potassium ions and low content of magnesium ions, even if the content of the deep sea water diluent and the sodium ion were the same, a stronger salty taste could be felt. , Compared to the deep sea water dilution, it has excellent sweetness and soft throat, and it is confirmed that the overall preference is high by reducing the slippery taste. That is, in the case of primary cation-concentrated water, it can be seen that the sensory is improved compared to the dilution of deep sea water.

(3) In addition, the divalent cation-concentrated water obtained in (1) of Example 2 is also a mineral composition, and it is evaluated whether it is improved by comparing the dilution of the deep-water mineral concentrated water prepared with the same content of magnesium ions with its functionality. Did. The sensory evaluation of each sample was compared with a 9-point scale of sweetness, saltyness, bitterness, soft throat, and slippery taste by using a total of 10 expert panelists with distilled water as 0 points. It proceeded on a 9-point scale.

division Divalent cation concentrate Deep sea water mineral concentrate dilution Cationic mineral
content
(ppm) Sodium ion 100~200 240~270 Potassium ion 1~15 240~270 Magnesium ion 900~1000 900~1000 Calcium ion 200~300 1~5

division Divalent cation concentrate Deep sea water mineral concentrate dilution* sweetness 4.4 1.5 Salty 1.6 5.4 bitter 1.5 1.8 Soft neck flip 7.3 3.3 Slippery taste 5.1 4.9 Overall preference 7.5 3.4

* Deep sea water mineral concentrate dilution: Dilution of deep sea water mineral concentrate with the same divalent cation concentrate and magnesium content

As shown in Tables 5 and 6, in the case of divalent cation-concentrated water, the sweetness is lower than that of marine deep-water mineral concentrate diluent having the same magnesium ion content due to the low content of sodium and potassium ions and high content of calcium ions. It is high and has little salty taste, and it is excellent in soft neck turning, so it is confirmed that the overall preference is high. That is, in the case of the secondary cation concentrated water, it can be seen that the sensory performance is improved compared to the dilution liquid of the deep sea mineral concentrate.

(4) Therefore, monovalent cation concentrated water is a mineral composition with a high salty taste, and divalent cation concentrated water is a mineral composition with a high sweetness, and is characterized by excellent soft neck turning. It can be seen that the sensory is improved compared to the dilution of the deep water or the concentrated mineral water of the deep sea. Through this, both monovalent cation concentrated water and divalent cation concentrated water can be usefully used as various compositions such as cosmetic compositions, food compositions, and pharmaceutical compositions by replacing marine deep water through dilution or combination with other compositions. .

Example 3: Cation exchange resin and mineral composition obtained through secondary electrodialysis from divalent cation concentrate

(1) The divalent cation concentrate obtained in (1) of Example 2 was passed through a cation exchange resin filled with zeolite 4A (Zeolite 4A), and the divalent cations in the divalent cation concentrated water were replaced with monovalent cations. By doing, mineral concentrated water was obtained. Subsequently, secondary electrodialysis was performed using a monovalent cation exchange membrane (CIMS, ASTOM, Inc.) to obtain a monovalent cation mineral composition and a trace mineral composition, respectively, and an inductively coupled plasma spectroscopy (ICP-AES) to determine the cation mineral content. It was measured.

division Divalent cation concentrate mineral
Concentrated water Monovalent cation mineral composition Trace mineral composition Cationic mineral
content
(ppm) Sodium ion 100~200 1800~2300 1500~2200 50~150 Potassium ion 1~15 1~15 1~15 0~3 Magnesium ion 900~1000 50~100 5~10 40-90 Calcium ion 200~300 30-50 1~5 10~40

As shown in Table 7, it is confirmed that the mineral concentrated water has a reduced content of magnesium ions and calcium ions and an increased content of sodium ions compared to a divalent cation concentrated water. At this time, the second electrodialysis of the mineral concentrated water, a large amount of sodium ions and potassium ions, a small amount of magnesium ions and calcium ions are separated into a monovalent cation mineral composition, the trace mineral composition is a large amount compared to the divalent cation concentrated water It was confirmed that the contents of the minerals sodium ions, potassium ions, magnesium ions and calcium ions were all reduced.

In addition, the trace mineral composition is a trace mineral, silica (Si) 0.1 ~ 0.5 ppm, iron (Fe) 0.1 ~ 0.5 ppm, vanadium (V) 0.01 ~ 0.1 ppm, selenium (Se) 5 ~ 12 ppm, molybdenum (Mo) It is found to contain 0.1 to 1 ppm, copper (Cu) 0.1 to 0.5 ppm, phosphorus (P) 0.01 to 0.1 ppm and iodine (I) 0.1 to 1 ppm.

(2) Therefore, the trace mineral composition is a composition that has a higher ratio of trace minerals to various minerals than other compositions, and replaces deep ocean water through dilution or combination with other compositions, cosmetic composition, food composition, and pharmaceutical It can be usefully used in various compositions such as compositions.

Example 4: From the monovalent cation concentrated water, to obtain a mineral composition through evaporation and concentration

The sodium salt precipitated in a solid state by evaporating and condensing the monovalent cation concentrated water obtained in (1) of Example 2 to about 10 to 95% in vacuum at 10 to 80° C., followed by solid-liquid separation. Was obtained, a liquid potassium mineral composition was obtained, and a cationic mineral content was measured through an inductively coupled plasma spectrometer (ICP-AES).

division Monovalent cation concentrate Sodium salt Potassium mineral composition Cationic mineral
content
(ppm) Sodium ion 5500~6000 5500~5800 5~150 Potassium ion 300~400 0~50 100~350 Magnesium ion 400~500 100~400 0~50 Calcium ion 100~200 50~250 0~10

As shown in Table 8, both the sodium salt and the potassium mineral composition were found to have decreased the total content of the cation mineral compared to the monovalent cation concentrate. However, it is confirmed that the sodium salt has an increased content of sodium ions, based on the total content of cation minerals, compared to the monovalent cation concentrate, and the potassium mineral composition is based on the total content of cation minerals compared to monovalent cation concentrate. , It was confirmed that the content of potassium ions increased.

The above description of the present invention is for illustration only, and a person having ordinary knowledge in the technical field to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (9)

(A) primary electrodialysis of mineral seawater or seawater-treated water to obtain monovalent cation-concentrated water and divalent cation-concentrated water, respectively;
(b) passing the divalent cation concentrated water obtained in step (a) through a cation exchange resin to obtain mineral concentrated water in which the divalent cations in the divalent cation concentrated water are substituted with monovalent cations; And
(c) a second electrodialysis of the mineral concentrate obtained in the step (b) to obtain a primary cationic mineral composition and a trace mineral composition, respectively.
According to claim 1,
In the step (a), the mineral seawater or seawater-treated water is any one selected from the group consisting of surface water, deep ocean water, and lava seawater, and selective separation of minerals.
According to claim 1,
In step (a) to (c), the monovalent cation is sodium ion (Na ⁺ ) or potassium ion (K ⁺ ), and the divalent cation is magnesium ion (Mg ²⁺ ) or calcium ion (Ca ²⁺ ). Characteristic, selective separation of minerals.
According to claim 1,
In step (b), the ion exchange resin is characterized in that it is a zeolite (zeolite) or synthetic polymer cation exchange resin, a selective separation method of minerals.
According to claim 1,
In the step (b), the mineral concentrated water is characterized in that the total concentration of divalent cations in the divalent cation concentrated water is reduced, and the total concentration of monovalent cations is increased.
According to claim 1,
In the step (c), the trace mineral composition is characterized in that it contains at least one trace mineral selected from the group consisting of silica, iron, vanadium, selenium, molybdenum, copper, phosphorus and iodine, selective separation of minerals.
According to claim 1,
(d) evaporating and concentrating the monovalent cation-concentrated water obtained in step (a) to obtain sodium salt and potassium mineral composition, respectively.
As a monovalent cation-concentrated water obtained by primary electrodialysis of mineral seawater or seawater-treated water, the saltiness is increased,
The monovalent cation concentrated water contains 300 to 400 parts by weight of potassium ions, 400 to 500 parts by weight of magnesium ions, and 100 to 200 parts by weight of calcium ions based on 5500 to 6000 parts by weight of sodium ions.
It is obtained by performing primary electrodialysis of mineral seawater or seawater-treated water, and is a divalent cation concentrate with increased sweetness.
The divalent cation concentrate water contains 100 to 200 parts by weight of sodium ions, 1 to 15 parts by weight of potassium ions, 900 to 1000 parts by weight of magnesium ions, and 200 to 300 parts by weight of calcium ions based on 900 to 1000 parts by weight of magnesium ions. , Divalent cation concentrate.

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