KR101663109B1 - Light Tube With Various Shape Light Collector for Photobioreactor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light tube for a photobioreactor having various shapes of light collecting parts, and more particularly to an optical tube having various shapes of light collecting parts at the upper end of the light tube, To an optical tube for a photobioreactor.
Since a large amount of external light can be supplied to the photo-bioreactor by various shapes of the light collecting part installed on the upper part of the optical tube for a photobioreactor having various shapes of the light collecting part according to the present invention, .

Description

TECHNICAL FIELD [0001] The present invention relates to a light tube for a photobioreactor having various shapes of light collecting parts,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light tube for a photobioreactor having various shapes of light collecting parts, and more particularly to an optical tube having various shapes of light collecting parts at the upper end of the light tube, To an optical tube for a photobioreactor.

Global oil and natural gas depletion and instability of the supply and demand system are being created. In addition, restrictions on the use of fossil fuels are becoming apparent in order to protect ecosystems such as climate change and environmental destruction. As a result, countries around the world are making efforts to increase the efficiency of existing thermal power generation as well as new and renewable energy, and to raise the environment friendly. Biological energy production technology using photobiore is attracting attention as a technology to replace existing fossil energy have.

Photosynthetic autotrophic organisms can grow using water, carbon dioxide and sunlight, and they can be cultivated anywhere in wastelands, coasts, and oceans, and they do not compete with existing land crops in terms of land or space. Photosynthetic autotrophic organisms accumulate large amounts of lipids (up to 70%) in vivo according to culture conditions, and the oil (lipid) production per unit area is 50-100 times higher than conventional edible crops such as soybeans, The possibility is very high. Biodiesel, which is produced from photosynthetic autotrophic organisms such as microalgae, can reduce pollutants such as fine dust and sulfur compounds as compared with conventional diesel fuel, and is suitable as an environment friendly vehicle fuel.

In recent years, due to the increase in prices of cereal resources due to the production of biofuels and concerns about food resources, research on the use of photosynthetic autotrophic organisms has focused on the production of biofuels for transportation, In addition to basic research such as microbial improvement, reactor and system research, application research is proceeding on a large scale.

These photosynthetic autotrophic organisms can be cultivated in large quantities and, unlike edible crops, can be harvested on a daily basis. In addition, the photosynthetic autotrophic organisms can grow directly by absorbing the high concentration of carbon dioxide (15% level) in the by-product gas such as thermal power plants, so the effect of reducing carbon dioxide is also great. In addition, the photosynthetic autotrophic organisms have attracted great interest as potential production materials of high value added medicines, colorants, cosmetics, nutrients of proteins and carbohydrates, and fine chemicals. Carotene (Carotene ), Astaxanthin, anticancer drugs, and pharmaceutical proteins are being sold all over the world.

The production technology of high value added products using photosynthetic autotrophic organisms consists of four processes: (1) photosynthetic self-nutrient culture, (2) harvesting, (3) extraction of useful materials, and (4) product conversion. Among them, the cultivation process of photosynthetic autotrophic organisms is very important in terms of economic efficiency of the entire process. For example, in the case of microalgae biofuel production, microalgae cultivation, harvesting, oil extraction, and biodiesel conversion processes account for 42%, 22%, 20% and 16% of the total process, respectively.

In particular, in order to efficiently produce photosynthetic autotrophic organisms, the development of high efficiency photosynthetic autotrophic bioreactors and high concentration culture techniques has been attempted.

 Methods for culturing photosynthetic autotrophic organisms, such as microalgae, can be divided into two groups: outdoor culture and photosynthetic bioreactor bioreactors.

In the case of the outdoor culture method, for example, in the form of a pond or a water channel circulating the medium through the outer ring, it is difficult to cultivate a high concentration and to be contaminated by other microorganisms, thereby increasing the cost of recovering the photosynthetic product There are disadvantages. Accordingly, researches on photosynthetic bioreactors having the advantage that high concentration of photosynthetic autotrophic organisms can be cultivated and pollution by other microorganisms can be prevented is mainly performed.

Korean Patent No. 1319241 discloses a photobioreactor using solar light. This photobioreactor concentrates sunlight and feeds it to a flat plate reactor along an optical fiber installed between a condensing panel and a reactor to grow algae. It uses solar light as a light source, so it is inexpensive and uses a large amount of optical fiber It is possible to uniformly supply sunlight to the interior of the reactor, thereby increasing the light irradiation efficiency. However, the optical fiber has a disadvantage in that it is difficult to efficiently cultivate the optical fiber due to its high optical transmittance.

Korean Patent No. 986732 discloses a photobioreactor having a cylindrical shape. This reactor maximizes the efficiency of the photobioreactor by using a cylindrical stacked light source, but it has a disadvantage in that the type of the light source is limited and the volume occupied in the reactor becomes larger as the light source is stacked, thereby decreasing the efficiency.

As a result of intensive efforts to solve the above problems, the inventors of the present invention have completed a light tube having various shapes of light collecting parts on the upper part thereof. As a result of performing an optical bio-culture experiment using the light tube, And that the present invention has been completed.

An object of the present invention is to provide a light tube for a photobioreactor having a light collecting part of various shapes.

Another object of the present invention is to provide a photobioreactor having the optical tube.

Yet another object of the present invention is to provide a method for culturing a photosynthetic autotrophic organism using the photobioreactor.

It is still another object of the present invention to provide a photobiological culture system comprising the above photobioreactor.

In order to achieve the above object, the present invention provides an optical tube inserted in a photobioreactor and filled with a liquid or a solid, wherein the optical tube has a spherical, hemispherical, hexahedral, conical or pyramidal light- And the light collecting unit is exposed to the outside of the photobioreactor. The present invention also provides an optical tube for a photobioreactor having various shapes of a light collecting unit.

The present invention also relates to

A reactor;

A penetration hole for inserting the optical tube, which is located at the center of the reactor and into which the optical tube for supplying the light source can be inserted;

The optical tube inserted into the optical tube insertion portion;

A gas inlet provided at a lower side of the reactor to supply gas; And

A gas outlet installed at an upper portion of the reactor to discharge a gas;

And a photocatalytic reactor.

The present invention also

(a) mixing the medium and light scattering particles and supplying them; And

(b) supplying a gas to the reactor to flow the light scattering particles and the medium, and supplying light from the light tube to propagate the photosynthetic self-feeding organism.

The present invention also relates to

A cylindrical reactor;

An optical tube insertion portion through which an optical tube for supplying a light source to the center of the reactor can be inserted;

The optical tube inserted into the optical tube insertion portion;

A gas inlet provided at a lower side of the reactor to supply gas;

A gas outlet installed at an upper portion of the reactor to discharge a gas;

A medium flowing up and down by the gas supplied from the gas inlet; And

Light scattering particles present in the medium and scattering light incident from the light tube;

Lt; RTI ID = 0.0 > biochemical < / RTI > culture system.

Since a large amount of external light can be supplied to the photo-bioreactor by various shapes of the light collecting part installed on the upper part of the optical tube for a photobioreactor having various shapes of the light collecting part according to the present invention, .

Fig. 1 shows a plenel lens used in the present invention and its principle.
FIG. 2 illustrates a light tube for a photobioreactor having a light scattering layer filled with gas in the interior thereof and having a plenel lens at an upper portion thereof according to the present invention.
3 shows a photobioreactor having an outer cylindrical shape according to the present invention.
4 shows a photobioreactor having an outer conical shape according to the present invention.
FIG. 5 illustrates a photo bioreactor according to the present invention in which the penetrating portion for inserting the outer and light portions is conical.
Figure 6 shows a light tube with a mirror for use and its working principle.
7 shows a light tube having a translucent cylinder and a photodiode light source therein and having light scattering particles therein.
FIG. 8 shows a light tube having a light collecting part of various shapes.
Fig. 9 is a view of a light tube having a scattering layer and a liquid layer successively filled with gas inside.
10 is an experimental photograph of a light tube having a scattering layer and a liquid layer successively filled with gas therein.
11 is a photograph of a photobioreactor equipped with a light tube according to the present invention, wherein (a) is an overall view, and (b) is an enlarged top view.
12 is a view of a light tube having a scattering layer filled with gas inside and a liquid layer continuously having a diffusion baffle at its lower end.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein is well known and commonly used in the art.

Conventional photobioreactors supply light from a light source located at one side, and other light sources or reflection devices are disposed on the other side to uniformly supply light to the inside of the reactor. However, this method has a problem that the light utilization efficiency is lowered because the light of the light source is counted to the outside, not the reactor, and the efficiency of the growth of the photosynthetic autotrophic organisms declines because the light can not be uniformly supplied to the interior. Also, there is a problem that efficiency is lowered due to fouling caused by algae generated on the wall surface.

The present inventors have proposed a method for increasing the efficiency of cultivation of photosynthetic autotrophic organisms by locating the optical tube at the center of the reactor to increase the efficiency and scattering the light of the light source by mixing light scattering particles in a medium other than the conventional reflector, The light source was installed at the upper part of the optical tube, and various light - gathering parts were installed at the upper part of the optical tube. Thus, the efficiency of photosynthetic self - feeding was improved by supplying a large amount of light to the photobioreactor through the optical tube. In addition, since the optical tube is used to supply an additional light source to the center of the reactor, the operation of the photobioreactor is made more efficient.

Accordingly, in one aspect of the present invention, there is provided an optical tube inserted in a photobioreactor and filled with a liquid or a solid, wherein the optical tube has a spherical, hemispherical, hexahedral, conical or pyramidal light- And the light collecting unit is exposed to the outside of the photobioreactor.

In the present invention, the optical tube 100 may have a spherical, hemispherical, hexahedral, conical, or pyramidal light collecting portion at its upper end. The light collecting part 110 is exposed to the outside and absorbs the external light source. In this case, the light collecting part 110 may be formed in various shapes in order to increase the absorption efficiency, and when the optical tube 110 is manufactured in a shape not identical to the optical tube lower end part 120, Can be performed simultaneously.

In the present invention, the term 'optical tube' is a cylindrical or prismatic tube made of polymer or glass, formed into a rod shape or a tubular shape in which a central portion is vacant, and in the case of a tube type, . One side of the optical tube is exposed to light (a light collecting part), and the other side is inserted into a device for supplying light. In the present invention, the other side can be inserted into the penetrating part for inserting the light source part. At this time, when light is supplied to one exposed side, the light is reflected to the other side by diffusing the inside of the optical tube, and since the outer surface is made transparent, the light incident from one side is supplied through the outer surface of the other side. In order to maximize scattering of light in the light tube, light scattering particles may be contained in the liquid tube or the solid in the light tube.

The term " Fresnel lens " in the present invention is a type of planar lens, which has been developed to improve the disadvantage that the larger the size of a general lens, the larger the weight. 1, each lens element is arranged concentrically with respect to the central portion, and each lens element is formed by concentrating the convex lens except for the portion forming the angle of the front surface of the lens in the concentric portion It has a shape. In other words, the planetary lens has a shape in which the convex lens is cut out into a concentric circle, then the front part is arranged in a plane, and the rear part is flattened. At this time, each of the concentric lenses of the plenum diffracts the light incident from the front part at different angles, and the diffraction angle of each concentric lens is directed to the center of the lens, so that it has the same focus as the convex lens.

In the present invention, the plenel lens is located at the uppermost part of the light collecting part, and is exposed to the outside of the photobioreactor, and collects the external light and transmits the light to the photobioreactor through the optical tube. Further, the planar lens is made of a flexible material and applicable to the top of a photobioreactor having various shapes, but is not limited thereto.

In the present invention, the optical tube 100 includes a liquid layer filled with a liquid or a light scattering layer 180 filled with a gas at an intermediate portion of the solid layer 170, and one to ten of the light scattering layers 180 alternate with the liquid layer or the solid layer 170 The optical tube may be an optical tube for a photobioreactor. The light tube 100 may be filled with liquid or solid and may additionally have a light scattering layer 180 filled with a core in the middle. In the light scattering layer 180 filled with the gas, the light incident due to the difference in density spreads to the outside, and each light scattering layer 180 can act to supply light to the photobioreactor. In addition, the amount of light reflected to the photobioreactor can be adjusted according to the position by controlling the position and the quantity of the light scattering layer. At this time, when the light scattering layer 180 is arranged closely, a larger amount of light is reflected than the other portions, and when the distance between the light scattering layers 180 is far apart, the amount of relatively reflected light is reduced.

In the present invention, the light scattering unit may be thicker toward the bottom. The intensity of the light scattered by the thickness changes in the light scattering part. When the thickness of the light scattering part is thin, the light is scattered more strongly, and when it is thick, the light scattering is weak. Therefore, the intensity of light according to each position can be controlled by controlling the thickness of the light scattering part, and thus the injected light can be emitted to the deep part of the photo bioreactor, thereby facilitating the growth.

In the present invention, the optical tube 100 may be a liquid tube filled with a liquid or a solid, and the liquid or solid filled in the tube may include light scattering particles 160. In order to efficiently scatter the light from the light source, the optical tube is filled with liquid or solid. In this case, the liquid can be water, solvent, oil or the like, and the composition can be adjusted according to the wavelength or intensity of light used. Also, if water is used as an internal liquid, it is desirable to add a small amount of chemicals, such as bleach or preservatives, to prevent deterioration of the water.

The optical tube may include a mirror 130 for covering 10 to 50% of the lower end portion 120 from the interface between the light collecting portion 110 and the lower end portion 120. A part of the optical tube is exposed to the outside (the light collecting part 110), receives an external light source into the optical tube, and diffuses the received light source to the optical tube lower end part 120 inserted into the reactor. At this time, the upper side of the lower part has the most amount of emitted light, and the amount of light decreases toward the lower part, which may lower the efficiency of the reactor. Therefore, the mirror 130 is installed on the upper surface of the lower end of the optical tube, which has the largest amount of emitted light, to uniformly radiate light to the entire optical tube lower end 120, thereby maximizing the efficiency of the photobioreactor .

In the present invention, the term 'light collecting part' means a part of a light tube which is exposed to the outside in order to absorb light when inserting the light tube, and the term 'lower part' means a part of the light tube inserted into the reactor.

In the present invention, the optical tube 100 may be an optical tube filled with liquid, and light scattering particles may be contained in the liquid filled in the optical tube.

In the present invention, the optical tube 100 includes: (a) a cylinder 150 made of semipermeable glass; And (b) a photodiode light source 140 installed inside the cylinder. An external light source is reflected by the optical tube 100 and is supplied to the inside of the optical tube 100. However, if the external light source is weakened, the efficiency of the photobioreactor may be lowered. Therefore, a photodiode (LED) light source 140 may be provided inside the optical tube to increase the efficiency of the photobioreactor even if the external light source is weak. In this case, when the photodiode light source 140 is not used, the light emitted from the photodiode light source 140 may interfere with incoming light, thereby reducing the efficiency of the light tube 100, and may be damaged due to the liquid in the light tube. In order to prevent this, the photodiode light source 140 is inserted into the semi-permeable cylinder 150 made of semi-permeable glass and installed in the optical tube. The semi-transparent glass is subjected to reflection treatment to the outside. When the light source is operated inside, the inside of the semi-permeable glass is transmitted through the inside like ordinary glass. However, when the inside light source is not operated, the outside light is reflected. Therefore, the semi-permeable cylinder 150 made of the semi-transparent glass is transparent when the photodiode light source 140 is operated to emit the light of the photodiode to the outside, and when the photodiode light source 140 is not operated, The efficiency of the optical tube can be prevented from being lowered. And separates the photodiode light source 140 from the liquid in the optical tube to prevent the photodiode from being damaged.

In the present invention, the light source may be further provided with the light source supplied from the outside in the optical tube 100 located at the center of the reactor. The external light source can use artificial light or natural light, but natural light is preferable because it is not uniform in the time and amount of sunshine, so it is used together with artificial light. Further, it is more preferable to use a photodiode (LED) which is easy to control the wavelength in artificial light and has excellent light conversion efficiency. Also, the optical tube 100 may be inserted into the reactor central portion 201 to diffuse the light supplied from the outside through the optical tube into the reactor 200.

The present invention, in another aspect,

A reactor;

A penetration hole for inserting the optical tube, which is located at the center of the reactor and into which the optical tube for supplying the light source can be inserted;

The optical tube inserted into the optical tube insertion portion;

A gas inlet provided at a lower side of the reactor to supply gas; And

A gas outlet installed at an upper portion of the reactor to discharge a gas;

To a photobioreactor.

In the present invention, the optical tube 100 inserted into the optical tube insertion portion 201 is also located at the center of the reactor, .

Other conventional photobioreactors have a light source on one side and reflect light from the light source by using a reflection device such as a mirror on the other side. When a light source is provided on one side, a photosynthetic autotrophic organism is concentrated on a wall surface of a light source to block light, so that a photosensitized autotrophic organism spreads in the internal medium using a reflection device on the other side.

In the present invention, light is scattered in the reactor using light scattering particles 220 floating inside, and optical tube 100 is installed in penetration portion 201 for optical tube insertion located at the center of the reactor, And the light scattering particles 220 mixed in the medium 300 are used to uniformly supply light to the inside of the reactor 200. This has the advantage that the light efficiency is extremely excellent as compared with the conventional reactors . In addition, the phenomenon that the photosynthetic autotrophic organisms are concentrated on the wall surface to block the light source can be reduced, thereby increasing the efficiency of the reactor.

In the present invention, the reactor 200 is preferably cylindrical, but it is not limited thereto, and a variety of conventional stereoscopic reactors can be used without limitation. However, in order to efficiently distribute the light supplied from the optical tube, .

The reactor 200 is made of a transparent material such as polycarbonate, glass, polyethylene terephthalate, or polypropylene, and transmits light emitted from the optical tube 100 to grow a photosynthetic autotrophic organism mixed with the medium 300 . In addition, since it is necessary to cultivate photosynthetic autotrophic organisms isolated from the outside environment, it is made into a closed type without open space.

In the present invention, a 'cylindrical reactor' means a cylindrical reactor having an upper end and a lower end having the same diameter, and the 'conical reactor' means a cylindrical reactor having a constant inclination at the upper and lower ends, The conical reactor is a kind of cylindrical reactor.

In the present invention, the reactor may be a conical reactor 200 whose outer diameter is less than the diameter of the lower side and whose outer surface is inclined (see FIG. 2). Most existing reactors have vertical walls, which aims to absorb most of the external light. However, the problem of such a vertical wall surface is the fouling caused by the algae on the wall surface, which is detrimental to the efficiency of the photobioreactor. However, the photobioreactor according to the present invention is manufactured in a conical shape, and the diameter of the upper side is smaller than the lower side, so that the wall surface has a constant inclination, and the gas bubble 213 supplied along the inclined wall surface rises. At this time, the supplied gas bubble 213 rises along the inclined wall surface to mix the medium adjacent to the wall surface, thereby minimizing the amount of algae adhering to the wall surface.

From this point of view, in the present invention, the optical tube insertion portion 201 may be inclined so that its diameter becomes smaller toward the lower side. This is because, when the optical tube 100 is inserted into the optical tube insertion portion 201, fouling due to light occurs in the optical tube insertion portion 201 for optical tube insertion. The penetration portion 201 for inserting the optical tube 100 is also inclined to prevent fouling.

Also, in the reactor according to the present invention, an inner circumferential surface gas introducing portion 214 for raising gas bubbles along the wall surface of the optical tube inserting penetration portion 201, and an outer circumferential surface portion for raising the gas bubble on the outer circumferential surface of the reactor It is possible to prevent the fouling of both the main surface on the reactor and the wall surface of the penetration portion for optical tube insertion more effectively.

The inner circumferential portion gas inlet 214 may be provided to correspond to the wall surface of the penetrating portion for inserting the light source portion, and the outer circumferential portion gas inlet 215 may be provided to correspond to the upper wall of the reactor.

The gas inlet 210, the inner circumferential surface gas inlet 214, and the upper surface of the gas inlet of the outer circumferential portion according to the present invention have fine pores through which the supplied gas can be supplied into the medium. Preferably, the pore size is about 0.01 to 1000 탆, preferably about 0.1 to 100 탆, and the material of the gas inlet portion may be any metal, polymer, or the like.

In the present invention, the reactor 200 has a culture medium input part 202 through which a culture medium is supplied and a culture medium discharge port 203 through which the cultured medium 300 can be discharged, . The medium of the present invention contains nutrients of photosynthetic self-organisms and is mixed with the existing medium 300 which is introduced into the medium input part 202 and is remained therein to grow the photosynthetic autotrophic organism.

When a certain amount of photosynthetic autotrophic organisms are generated, a batch system or a fed-batch system for obtaining photosynthetic autotrophic organisms by opening a discharge outlet 203 located at one side of the lower side and collecting a predetermined amount of the medium, Or may be operated in a continuous system in which the medium is discharged from the discharge port 203 at a constant speed while the medium is discharged from the discharge port 202 at the side.

In the present invention, the reactor 200 includes a gas inlet 210 for supplying gas at a lower portion thereof, a gas supply portion 211 for introducing gas into the gas inlet 210, (212). ≪ IMAGE > Although photosynthesis autotrophic organisms are generally cultured by supplying air, some anaerobic algae may interfere with their growth if air is supplied. Therefore, inactivated gases such as nitrogen, helium, neon, argon, can do. The photosynthetic activity of these photosynthetic self-feeding organisms is the process of producing nutrients and oxygen by using carbon dioxide and light. To purchase the carbon dioxide, it is necessary to purchase commercially available carbon dioxide, or to use the exhaust gas of the power plant, Carbon dioxide emission gas of the process can be used. Also, the gas can be mixed according to the characteristics of each photosynthetic autotrophic organism, and water vapor can be mixed and supplied for the purpose of raising the temperature.

In the present invention, the gas introducing portion includes an inner circumferential portion gas introducing portion 214 for allowing the gas bubbles to rise along the wall surface of the penetrating portion 201 for inserting the light source portion, an outer circumferential surface portion It is possible to prevent the fouling of the main surface on the reactor and the wall surface of the penetrating portion for inserting the light source unit more effectively.

In the present invention, the reactor 200 includes a medium 300 flowing up and down by a gas bubble 213 supplied by the gas inlet 210, and a medium 300 mixed with the medium 300, The light-scattering particles 220 scatter light incident from the light-scattering particle 220, and can be used for culturing a photosynthetic autotrophic organism. Conventional photobioreactors reflect light incident on one side by using mirrors on the other side and supply them to photosynthetic autotrophic organisms inside the reactor. However, as the amount of photosynthetic autotrophic organisms increases, Of photosynthetic autotrophic organisms is increased. However, according to the present invention, the light scattering particles 220 are mixed with the inner medium 300 of the reactor 200 to scatter incident light, thereby uniformly supplying light to the photosynthetic self-feeding organisms from all directions.

In the present invention, the light scattering particles 220 may be composed of one or more particles selected from the group consisting of glass powder, metal powder, polymer powder subjected to reflection plating, and glass powder coated with reflection. The light scattering particles 220 are composed of particles capable of scattering light. The glass powder is refracted by the glass and scattered in all directions. The other metal powder and the reflection plating powder scatter the light reflected on the outer surface in all directions.

In the present invention, the light scattering particles 220 may have a density of 0.8 g / mL to 1.2 g / mL. The light scattering particles 220 have a density (1 g / mL) similar to that of water, which is the main component of the medium to be supplied, and float inside the medium 300 without sinking to the bottom of the reactor. In addition, since the medium always moves in a fluid state by the gas 213 supplied from the lower side, the light scattering particles 220 inside the medium 300 do not sink to the bottom.

In the present invention, the reactor may have a diffusion baffle at a lower end thereof. The baffle is installed at the bottom of the reactor and serves to mix the medium inside the photobioreactor and the gas supplied by the photosynthetic autotrophic organisms. Beppel can effectively mix the input nutrients required for photosynthetic autotrophic organisms, the photosynthetic autotrophic organisms, heat energy, and chemicals that are generated internally, and equalize the inside of the photobioreactor. As shown in FIG. 12, when the baffle is installed, the velocity of the mixed gas concentrated only in the lower portion is appropriately distributed to the side, and the turbulence of the vortex is also stronger, . At this time, it is preferable to use a porous disk as the baffle, but it is possible to use the baffle as long as it can mix the inside depending on the condition and size of the reactor.

The present invention, in another aspect,

A cylindrical reactor;

An optical tube insertion portion through which an optical tube for supplying a light source to the center of the reactor can be inserted;

The optical tube inserted into the optical tube insertion portion;

A gas inlet provided at a lower side of the reactor to supply gas; And

A gas outlet installed at an upper portion of the reactor to discharge a gas;

A medium flowing up and down by the gas supplied from the gas inlet; And

Light scattering particles present in the medium and scattering light incident from the light tube;

Lt; RTI ID = 0.0 > culture system. ≪ / RTI >

The present invention, in another aspect,

(a) mixing the medium and light scattering particles and supplying them; And

(b) supplying a gas to the reactor to flow the light scattering particles and the medium, and supplying light from the light tube to multiply the photosynthetic autotrophic organism.

To a method for culturing a photosynthetic autotrophic organism using the photobioreactor.

In the present invention, the photosynthetic autotrophic organism may be microalgae or cyanobacteria, but the present invention is not limited thereto.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereto will be. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.

100: Optical tube
110: Concentrator
120: lower end of the light tube
130: half mirror
140: photodiode light source
150: Semi-permeable cylinder
160: Light scattering particles inside the light tube
170: liquid layer
180: light scattering layer filled with gas
190: Plena lens
200: reactor
201: penetration part for optical tube insertion
202:
203: Badge outlet
210: gas inlet
211: gas supply unit
212: gas outlet
213: gas or gas bubble
214: inner circumferential portion gas input portion
215: outer circumferential portion gas input portion
220: Light scattering particles
300: Badge
400: external light source
410: Supplied light
500: Baffle for spreading

Claims (24)

In a light tube inserted in a photobioreactor,
A spherical, hemispherical, hexahedral, conical or pyramidal light collecting portion is provided at the upper end of the optical tube,
The condensing unit is configured to be exposed to the outside of the photobioreactor,
Wherein the middle part of the optical tube is composed of a light scattering part filled with a gas and both sides of the light tube middle part are composed of a liquid or a solid containing light scattering particles and the liquid is water, Optical tubes for photobioreactors.
The optical tube for a photobioreactor according to claim 1, wherein the condenser has a planar lens at an uppermost portion thereof.

delete delete delete The optical tube according to claim 1,
(a) a cylinder made of semipermeable glass; And
(b) a photodiode light source installed inside the cylinder;
Wherein the optical tube further comprises an optical fiber.

The optical tube for a photobioreactor according to claim 1, wherein 1 to 10 light scattering parts filled with a gas are alternately installed with a liquid layer or a solid layer.

The optical tube for a photobioreactor according to claim 7, wherein the light scattering parts have different thicknesses depending on their positions.

The optical tube for a photobioreactor according to claim 1, wherein the optical tube has a half mirror for covering 10 to 50% of the lower end from the interface between the light collecting part and the bottom part.

A reactor;
A penetration hole for inserting the optical tube, which is located at the center of the reactor and into which the optical tube for supplying the light source can be inserted;
A light tube according to any one of claims 1, 2, and 6 to 9 inserted into the penetration for insertion of the optical tube;
A gas inlet provided at a lower side of the reactor to supply gas; And
A gas outlet installed at an upper portion of the reactor to discharge a gas;
And a photocatalytic reactor.
11. The photobioreactor according to claim 10, wherein the reactor has a cylindrical shape or a conical shape in which the diameter of the upper end portion is smaller than the diameter of the lower end portion.

12. The photobioreactor according to claim 11, wherein the penetration portion and the optical tube for inserting the optical tube have a smaller diameter toward the lower side.

11. The photobioreactor according to claim 10, wherein the reactor further comprises a medium input part for supplying a medium, and a discharge port for discharging the medium.

11. The photobioreactor according to claim 10, wherein the reactor further comprises a gas supply unit for supplying gas to the gas inlet.

12. The photobioreactor according to claim 11, wherein the gas introducing portion is installed along the lower end portion and the outer circumferential surface of the reactor, and the supplied gas rises along the inclined outer surface portion of the reactor.

[12] The method of claim 12, wherein the reactor has a gas inlet installed at a lower end of the reactor,
And the outer circumferential surface corresponding to the inner circumferential surface corresponding to the wall surface of the penetrating portion for inserting the optical tube and / or the outer wall surface of the reactor.

11. The method according to claim 10, further comprising a medium flowing up and down by the gas supplied by the gas inlet, and a light scattering particle mixed with the medium to scatter light incident from the light source, Lt; RTI ID = 0.0 > 1, < / RTI >

18. The photobioreactor according to claim 17, wherein the light scattering particles are at least one selected from the group consisting of glass powders, metal powders, reflective plated polymer powders, and reflective plated glass powders.

18. The photobioreactor according to claim 17, wherein the light scattering particles have a density of 0.8 g / mL to 1.2 g / mL.

18. The photobioreactor according to claim 17, wherein the photosynthetic autotrophic organism is a microalgae or a cyanobacteria.

11. The photobioreactor according to claim 10, wherein the reactor has a diffusion baffle at a lower end thereof.

A method for culturing a photosynthetic autotrophic organism using the photobioreactor according to claim 10, comprising the steps of:
(a) mixing the medium and light scattering particles and supplying them; And
(b) supplying a gas to the reactor to flow the light scattering particles and the medium, and supplying light from the light tube to multiply the photosynthetic autotrophic organism.

23. The method of claim 22, wherein the photosynthetic autotrophic organism is a microalgae or a cyanobacterium.

A cylindrical reactor;
An optical tube insertion portion through which an optical tube for supplying a light source to the center of the reactor can be inserted;
A light tube according to any one of claims 1, 2, and 6 to 9 inserted into the penetration for insertion of the optical tube;
A gas inlet provided at a lower side of the reactor to supply gas; And
A gas outlet installed at an upper portion of the reactor to discharge a gas;
A medium flowing up and down by the gas supplied from the gas inlet; And
Light scattering particles present in the medium and scattering light incident from the light tube;
Lt; / RTI >

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