JP2005246294A - Oxygen-nanobubble water and production method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide oxygen-nanobubble water that has potential usefulness in every technical fields and particularly has potential effects relating to physiological activity on animals and plants. <P>SOLUTION: The oxygen-nanobubble water is characterized by having an air bubble diameter of 50 to 500 nm and comprising an aqueous solution that contains oxygen-nanobubbles containing oxygen within such air bubbles. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to oxygen nanobubble water that has potential utility in all technical fields, and in particular, has manifested bioactive effects on animals and plants.

  In recent years, it has become known that due to pollution of the global environment in general, the human body becomes oxygen deficient at the tissue level through the accumulation of various chemical substances.

  In order to solve this problem, for example, Patent Document 1 has a physiologically active function by dissolving oxygen in a gas in a bubble (microbubble) having a diameter different from that of a normal bubble having a diameter of 50 μm or less. Proposes microbubbles.

However, in order to enhance human bioactivity function, microbubbles must act at the tissue level, and in order to supply a sufficient amount of oxygen to the whole body, a large-scale device is required, and costs, etc. There was a problem.
JP 2002-143885 A

  The present invention has been made in view of the above-described circumstances, and provides oxygen nanobubble water, in which oxygen is present in an aqueous solution for a long period of time and has an active effect on a living organism, and a method for producing the same The purpose is to do.

  The object of the present invention is achieved by comprising an aqueous solution having a bubble diameter of 50 to 500 nm and containing oxygen nanobubbles containing oxygen in the bubble.

  The object of the present invention is an aqueous solution having a bubble diameter of 50 to 500 nm and containing oxygen nanobubbles containing oxygen in the bubble, wherein the aqueous solution has a salinity of 0.01 to 3. It can be effectively achieved by setting in the range of 5%.

  Further, the above object of the present invention is achieved by producing oxygen nanobubbles by applying a physical stimulus to oxygen-containing microbubbles contained in an aqueous solution, thereby rapidly reducing the bubble diameter of the microbubbles. The

  In the process of rapidly reducing the microbubbles, the object of the present invention is to increase the charge density on the surface of the microbubbles when the bubble diameter is reduced to 50 to 500 nm, thereby generating an electrostatic repulsive force. It has an opposite sign drawn into the aqueous solution in the vicinity of the interface by stopping the contraction of the bubbles or in the process of abruptly reducing the microbubbles due to ions adsorbed on the gas-liquid interface and electrostatic attraction. By concentrating both ions in a small volume to a high concentration, it acts as a shell surrounding the microbubbles, and by inhibiting diffusion of the oxygen in the microbubbles into the aqueous solution, The ions adsorbed on the gas-liquid interface by stabilizing the oxygen nanobubbles are hydrogen ions or hydroxide ions, and are close to the interface. In the process of stabilizing the oxygen nanobubbles by using electrolyte ions in an aqueous solution as ions attracted to the surface or abruptly shrinking the microbubbles, the temperature inside the microbubbles is rapidly increased by adiabatic compression. Ascending, it is achieved more effectively by stabilizing the oxygen nanobubbles by giving a physicochemical change accompanying ultra-high temperature around the microbubbles.

  Also, the object of the present invention is that the physical stimulus is a discharge to the microbubbles using a discharge generator, or the physical stimulus is the microbubbles using an ultrasonic transmission device. The ultrasonic stimulation is applied to the body, or the physical stimulation causes the aqueous solution to flow by operating a rotating body mounted in a container containing the aqueous solution, and uses compression, expansion, and vortex generated during the flow. Or when the physical stimulus forms a circulation circuit in the container, the solution containing the microbubbles in the container is taken in the solution containing the microbubbles in the circulation circuit. After that, compression, expansion, and vortex flow are made by passing through an orifice or a perforated plate having single or multiple holes provided in the circulation system circuit. It is more effectively achieved by generating.

  According to the oxygen nanobubble water and the method for producing the same according to the present invention, oxygen in the oxygen nanobubble water is contained as nanobubbles having a bubble diameter of 50 to 500 nm, and oxygen is used as an aqueous solution for a long period of one month or longer. It can be dissolved inside. As a result, it has become possible to use it for the purpose of enhancing the physiological activity effect of oxygen in medical sites, seafood breeding and aquaculture, terrestrial life breeding sites, and the like.

  In addition, by incorporating oxygen nanobubble water according to the present invention into the body of a living organism, it has become possible to quickly recover from diseases and to prevent infections caused by bacteria and viruses. By applying the oxygen nanobubble water according to the present invention to the skin, it has become possible to promote the recovery of skin diseases.

  Furthermore, by adjusting the salt concentration of oxygen nanobubble water according to the present invention in the range of 0.5 to 1.5%, it becomes possible to coexist freshwater and seawater fish and shellfish in one aquarium. When weakened seafood was put into oxygen nanobubble water, it became possible to recover the weakened seafood.

  The oxygen nanobubble water according to the present invention will be described in detail.

  In the oxygen nanobubble water according to the present invention, oxygen in an aqueous solution is held as nanobubbles. A nanobubble is a bubble having a bubble diameter of 50 to 500 nm as shown in the particle size distribution in FIG. 1, and is characterized by oxygen being dissolved in an aqueous solution over a long period of one month or more. And The method for storing oxygen nanobubble water according to the present invention is not particularly limited, and oxygen does not disappear from the aqueous solution for more than one month even if stored in a normal container.

  FIG. 2 shows a mechanism in which oxygen of oxygen nanobubble water according to the present invention exists as oxygen nanobubbles. In the case of oxygen microbubbles, the smaller the bubbles, the higher the internal oxygen dissolution efficiency, and the presence becomes unstable and disappears instantly. In the case of oxygen nanobubbles, an extremely high concentration of electric charge is concentrated at the gas-liquid interface, which prevents the sphere (bubble) from contracting due to an electrostatic repulsive force acting between the charges on opposite sides of the sphere. In addition, due to the action of the concentrated high electric field, an inorganic shell mainly composed of electrolyte ions such as iron contained in the aqueous solution is formed around the bubbles, which prevents the dissipation of oxygen inside. Since this shell is different from the surfactant or organic shell, the shell itself easily collapses due to the deviation of the charge around the bubble that occurs when oxygen nanobubbles come into contact with other substances such as bacteria. When the shell collapses, the oxygen contained inside is easily released into the aqueous solution.

  Also, an inorganic shell mainly composed of electrolyte ions such as iron is formed around the bubbles by the action of the concentrated high electric field, which prevents the dissipation of oxygen inside. Since this shell is different from the surfactant or organic shell, the shell itself tends to collapse easily due to the deviation of the charge around the bubble that occurs when oxygen nanobubbles come into contact with other substances such as bacteria. When the shell collapses, the oxygen contained inside is easily released into the aqueous solution.

  As a result of intensive studies, the inventors have found that when the oxygen nanobubble water according to the present invention is taken into the body of a living organism, the disease can be recovered rapidly or infectious diseases such as bacteria and viruses can be prevented. Although the reason is not clear, it is predicted that oxygen nanobubbles penetrate into the body of the living body and activate cells.

  In addition, we have to wait for future research on the reason. However, the inventors adjusted the salt concentration of oxygen nanobubble water to 0.5 to 1.5%, so that freshwater and seawater fish and shellfish can be contained in one tank. It was found that they can coexist.

  Next, the method for producing oxygen nanobubble water according to the present invention will be described in detail.

  In the method for producing oxygen nanobubble water according to the present invention, oxygen microbubbles having a diameter of 10 to 50 μm are rapidly reduced by physical stimulation. When electrolytes such as iron, manganese, calcium, sodium, magnesium ions and other mineral ions are mixed so that the electric conductivity in an aqueous solution containing oxygen microbubbles is 300 μS / cm or more, Inhibits the reduction of bubbles by the repulsive force. This electrostatic repulsive force is an electrostatic force that acts on ions of the same sign existing on the opposite surface of the sphere by increasing the curvature of the sphere as it shrinks in a spherical microbubble. Since the reduced oxygen microbubbles are pressurized, the smaller the oxygen microbubbles, the greater the tendency to shrink. However, when the bubble diameter becomes smaller than 500 nm, this electrostatic repulsion force has become apparent. , The bubble shrinkage stops.

  When an electrolyte such as iron, manganese, calcium, sodium, magnesium ions, or mineral ions is mixed in the aqueous solution so that the electric conductivity is 3 mS / cm or more, this electrostatic repulsive force works sufficiently strongly. Bubbles stabilize by balancing the shrinking force and the repulsive force. The bubble diameter when stabilized (bubble diameter of nanobubbles) varies depending on the concentration and type of electrolyte ions, but is 50 to 500 nm as shown in FIG.

  The feature of oxygen nanobubbles is that not only oxygen is maintained in a pressurized state but also an extremely strong electric field is formed by the concentrated surface charge. This strong electric field has a strong influence on oxygen in the bubbles and the surrounding aqueous solution, and has a physiological activity effect, a bactericidal effect, a chemical reactivity, and the like.

  FIG. 3 is a side view of an apparatus for producing oxygen nanobubble water using a discharge device.

  The microbubble generator 3 takes in the aqueous solution in the container 1 through the water intake 31, and oxygen is injected into the microbubble generator 3 from an inlet (not shown) for injecting oxygen for producing oxygen microbubbles. The oxygen microbubbles produced by the microbubble generator 3 are fed into the container 1 from the oxygen nanobubble-containing aqueous solution discharge port 32 by mixing with the aqueous solution taken in by the water intake 31. As a result, oxygen microbubbles are present in the container 1. In the container 1, there are an anode 21 and a cathode 22, and the anode 21 and the cathode 22 are connected to the discharge generator 2.

  First, oxygen microbubbles are generated in the container 1 containing the aqueous solution using the microbubble generator 3.

  Next, an electrolyte of iron, manganese, calcium and other minerals is added, and the electrolyte is added so that the electric conductivity of the aqueous solution becomes 3 mS / cm or more.

  Using the discharge generator 2, an underwater discharge is performed on the aqueous solution containing oxygen microbubbles in the container 1. In order to produce oxygen nanobubbles more efficiently, it is preferable that the concentration of oxygen microbubbles in the container 1 reaches 50% or more of the saturation concentration. The underwater discharge voltage is preferably 2000 to 3000V.

  Oxygen microbubbles in water are rapidly reduced into nano-level bubbles by shock wave stimulation (physical stimulation) accompanying underwater discharge. At this time, the ions present around the bubbles have a rapid reduction speed, so that they do not have time to deviate into the surrounding water and are rapidly concentrated as the bubbles are reduced. Concentrated ions form a very strong high electric field around the bubbles. In the presence of this high electric field, hydrogen ions and hydroxide ions present at the gas-liquid interface have a binding relationship with electrolyte ions having opposite signs existing around the bubbles, and form an inorganic shell around the bubbles. Since this shell prevents spontaneous dissolution of oxygen in the bubbles in the aqueous solution, the oxygen nanobubbles are stably contained in the aqueous solution without dissolving. In addition, since the produced oxygen nanobubble is a very fine bubble of about 50 to 500 nm, it hardly receives buoyancy in water, and there is almost no rupture on the water surface recognized by a normal bubble.

  A method for producing oxygen nanobubble water by irradiating oxygen microbubbles with ultrasonic waves will be described. In addition, description is abbreviate | omitted about the location which overlaps with the manufacturing method of oxygen nano bubble water by discharge.

  FIG. 4 is a side view of an apparatus for producing oxygen nanobubble water using an ultrasonic generator.

  Similarly to the method for producing oxygen nanobubble water by discharge, oxygen microbubbles are produced by the microbubble generator 3, the water intake 31 and the oxygen nanobubble-containing aqueous solution outlet 32, and the oxygen microbubbles are sent into the container 1. An ultrasonic generator 4 is installed in the container 1. Although the installation place of the ultrasonic generator 4 is not particularly limited, it is preferable to install the ultrasonic generator 4 between the water intake 31 and the oxygen nanobubble-containing aqueous solution outlet 32 in order to efficiently produce oxygen nanobubbles. .

  First, oxygen microbubbles are generated using a microbubble generator 3 in a container 1 containing water containing electrolyte ions.

  Next, using the ultrasonic generator 4, an ultrasonic wave is applied to the aqueous solution containing oxygen microbubbles in the container 1. In order to produce oxygen nanobubble water more efficiently, it is preferable that the concentration of oxygen microbubbles in the container 1 reaches 50% or more of the saturation concentration. The transmission frequency of the ultrasonic waves is preferably 20 kHz to 1 MHz, and the ultrasonic irradiation preferably repeats oscillation and stop at intervals of 30 seconds, but may be performed continuously.

  Next, a method for producing oxygen nanobubble water by causing vortex will be described. In addition, description is abbreviate | omitted about the location which overlaps with the method of manufacturing oxygen nano bubble water by discharge, and the method of manufacturing oxygen nano bubble water by ultrasonic irradiation.

  FIG. 5 is a side view of the apparatus when compression, expansion and vortex are used to produce oxygen nanobubble water. Similarly to the method for producing oxygen nanobubble water by discharge and the method for producing oxygen nanobubble water by ultrasonic irradiation, microbubbles are produced by the microbubble generator 3, the water intake 31 and the oxygen nanobubble-containing aqueous solution outlet 32, and oxygen microbubbles are produced. Into the container 1. A circulation pump 5 for partially circulating an aqueous solution containing oxygen microbubbles in the container 1 is connected to the container 1, and a large number of holes are formed in a pipe (circulation pipe) in which the circulation pump 5 is installed. An orifice (perforated plate) 6 is connected and connected to the container 1. The aqueous solution containing oxygen microbubbles in the container 1 is caused to flow in the circulation pipe by the circulation pump 5 and passes through the orifice (perforated plate) 6 to generate compression, expansion and vortex.

  First, oxygen microbubbles are generated in a container 1 containing water containing charged ions using a microbubble generator 3.

  Next, the circulation pump 5 is operated to partially circulate the aqueous solution containing the oxygen microbubbles. An aqueous solution containing oxygen microbubbles is pushed out by the circulation pump 5, and compression, expansion, and vortex flow are generated in the pipe before and after passing through the orifice (porous plate) 6. Oxygen microbubbles are rapidly reduced and stabilized as oxygen nanobubbles by generating eddy currents due to the compression and expansion of the microbubbles during passage and the eddy currents generated in the pipes. In addition, the order in the flow path of the circulation pump 5 and the orifice (porous plate) 6 may be reversed.

  Although the orifice (perforated plate) 6 is single in FIG. 6, a plurality of orifices (circular plate) may be provided, and the circulation pump 5 may be omitted if necessary. In that case, it is also possible to use the driving force of the microbubble generator 2 on the aqueous solution, the flow of the aqueous solution due to the height difference, and the like.

  In addition, as shown in FIG. 6, oxygen nanobubbles can also be produced by attaching a rotating body 7 for generating a vortex in the container 1. By rotating the rotating body 7 at 500 to 10000 rpm, a vortex can be efficiently generated in the container 1.

  After the oxygen nanobubble water according to the present invention was produced, the oxygen nanobubbles were measured by a dynamic light scattering optical meter, and had a particle size distribution centered at about 150 nm. This oxygen nanobubble water was put in a glass bottle, covered, and stored in a cool and dark place. When measured in the same manner after one month, they had almost the same particle size distribution and remained stable.

  The action of electrolyte ions is important for the stabilization of nanobubbles in oxygen nanobubble water. When the water quality of the oxygen nanobubble water according to the present invention was measured, pH = 8.4, hardness = 1000 mg / L, iron = 0.03 mg / L, manganese = 0.016 mg / L, sodium = 2200 mg / L, chloride. Product ion was 2110 mg / L.

  When weakened coral and rockfish were put into oxygen nanobubble water with a salinity between fresh water and seawater, it recovered rapidly.

  In addition, when oxygen nanobubble water is put into the aquarium, freshwater fish such as carp, flounder, flounder, ainame, Ryugu goby, donko, etc. I was able to survive across. Also, during this period, the rapid growth of fry was confirmed. Furthermore, with regard to tropical fish, seawater-based cobalt, freshwater-based guppy, etc. could survive several days or more in the same aquarium even under conditions of a water temperature of about 15 ° C.

  By providing oxygen nanobubble water for drinking at chicken breeding sites, the amount of resistance against infectious diseases was improved and the use of antibiotics could be greatly reduced.

It is the particle size frequency distribution of oxygen nanobubbles of oxygen nanobubble water according to the present invention (average distribution is about 140 nm and standard deviation is about 40 nm). It is the schematic diagram showing the mechanism in which oxygen exists stably in aqueous solution as nanobubble. It is a side view of the apparatus which manufactures oxygen nano bubble water using a discharge device. It is a side view of the apparatus which manufactures oxygen nano bubble water using an ultrasonic generator. It is a side view of the apparatus which raise | generates an eddy current and manufactures oxygen nano bubble water. It is a side view of the apparatus which raise | generates an eddy current with a rotary body and manufactures oxygen nano bubble water.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Discharge generator 21 Anode 22 Cathode 3 Microbubble generator 31 Water intake 32 Oxygen nanobubble containing aqueous solution outlet 4 Ultrasonic generator 5 Circulation pump 6 Orifice (perforated plate)
7 Rotating body

Claims (11)

  Oxygen nanobubble water, wherein the bubble has a diameter of 50 to 500 nm and is made of an aqueous solution containing oxygen nanobubbles containing oxygen in the bubbles.   A bubble diameter of 50 to 500 nm, and an aqueous solution containing oxygen nanobubbles containing oxygen in the bubble, wherein the aqueous solution has a salinity of 0.01 to 3.5%. Oxygen nanobubble water characterized by   A method for producing oxygen nanobubble water, characterized in that oxygen nanobubbles are produced by applying a physical stimulus to microbubbles containing oxygen contained in an aqueous solution to rapidly reduce the bubble diameter of the microbubbles.   In the process of abruptly reducing the microbubbles, if the bubble diameter is reduced to 50 to 500 nm, the charge density on the surface of the microbubbles is increased, and electrostatic repulsion is generated, whereby the reduction of the microbubbles is stopped. Item 4. The method for producing oxygen nanobubble water according to Item 3.   In the process of abruptly reducing the microbubbles, both ions having opposite signs attracted into the aqueous solution in the vicinity of the interface due to the ions adsorbed on the gas-liquid interface and the electrostatic attractive force are brought into the minute volume. The oxygen nanobubbles are stabilized by acting as a shell surrounding the microbubbles by concentrating to a high concentration and inhibiting diffusion of the oxygen in the microbubbles into the aqueous solution. 4. The method for producing oxygen nanobubble water according to 4.   The ions adsorbed on the gas-liquid interface are hydrogen ions or hydroxide ions, and the oxygen nanobubbles are stabilized by using electrolyte ions in an aqueous solution as ions attracted to the vicinity of the interface. 5. The method for producing oxygen nanobubble water according to any one of 5 above.   In the process of abruptly reducing the microbubbles, the temperature inside the microbubbles rapidly increases due to adiabatic compression, and the oxygen nanobubbles are formed by giving a physicochemical change around the microbubbles with an ultrahigh temperature. The method for producing oxygen nanobubble water according to any one of claims 3 to 6, wherein the oxygen nanobubble water is stabilized.   The method for producing oxygen nanobubble water according to any one of claims 3 to 7, wherein the physical stimulation is to discharge the microbubbles using a discharge generator.   The method for producing oxygen nanobubble water according to any one of claims 3 to 7, wherein the physical stimulation is to ultrasonically irradiate the microbubbles using an ultrasonic transmission device.   The physical stimulation is to cause the aqueous solution to flow by operating a rotating body mounted in a container containing the aqueous solution, and to utilize compression, expansion, and vortex generated during the flow. The method for producing oxygen nanobubble water according to any one of the above.   In the case where a circulation circuit is formed in the container, the physical stimulation is performed by taking the aqueous solution containing the microbubbles in the container into the circulation circuit and then introducing the aqueous solution containing the microbubbles into the circulation circuit. The production of oxygen nanobubble water according to any one of claims 3 to 7, wherein compression, expansion and vortex are generated by passing through an orifice or a perforated plate having a single or multiple holes provided in a circuit. Method.

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