KR100897018B1 - Photo-bioreactor for culturing micro algae and apparatus for production of micro algae having the same - Google Patents

Abstract

The present invention relates to an optical bioreactor for cultivating marine microalgae maximizing the productivity of microalgae by using sunlight and increasing light source irradiation efficiency, and a microalgae production apparatus having the same. According to the present invention, the microalgae is not attached to the inside of the reaction vessel, and the light guide plate or the OLED is used to maximize the light source irradiation efficiency to increase the productivity of the microalgae, and to cultivate the microalgae using sunlight to energy from the outside It is possible to provide a microalgae cultivation photomicrobial reactor and microalgae production apparatus to operate without being supplied.

Microalgae cultivation photobioreactor, reaction vessel, reaction vessel cover, microalgae, light emitting unit, light source unit, diffusion lens, storage battery, light guide plate, active light emitting diode (OLED), pump unit

Description

Photomicrobial reactor for microalgae cultivation and microalgae production apparatus having the same {PHOTO-BIOREACTOR FOR CULTURING MICRO ALGAE AND APPARATUS FOR PRODUCTION OF MICRO ALGAE HAVING THE SAME}

The present invention relates to an optical bioreactor for culturing marine microalgae, and more particularly, to a marine microalgae cultivation optical bioreactor for maximizing the productivity of microalgae by increasing light source irradiation efficiency using sunlight and a microalgae provided with the same. For production equipment.

Recently, as industrial emission CO₂ is pointed out as the main culprit of global warming, researches are actively underway to utilize microalgae to fix CO₂.

Microalgae can play a role in the treatment of waste water, immobilization of carbon dioxide, etc., due to their various capabilities, and have been used for the production of useful substances such as fuels, cosmetics, feed, food colorings and pharmaceutical raw materials. In the meantime, useful and high value added substances are constantly being discovered and expanding their applications.

There are many factors such as the composition of the medium, temperature, pH, light intensity, light quantity, etc., which affect the increase in biomass and useful products of microalgae, but among them, light occupies the largest portion due to the characteristics of photosynthetic microalgae.

In general, the apparatus for culturing photosynthetic microalgae for the purpose of immobilizing carbon dioxide can be largely divided into a large-scale cultivation outdoors (open system) and using a microbial culture photobioreactor (closed system).

Outdoor mass cultivation apparatus including pond type has been mainly used in the form of reaction facilities such as lakes or large ponds and is commercially available in some countries.

However, this type of cultivation facility has the advantages of low initial investment and easy maintenance, but it is difficult to contaminate, isolate and purify, low cell concentration, high mass (especially nitrogen source), high water quality and quantity demand, and irregular climate. Due to problems such as conditions and expensive labor costs, the installation is extremely limited.

In particular, the effective growth of light is not achieved inside the culture apparatus, the growth rate of the cells is low, the growth yield of the cells is low, and a large installation space is required to remove a large amount of carbon dioxide.

Therefore, it is not applicable in countries where it is difficult to secure a site necessary for the installation of reaction facilities such as Korea.

In order to solve the problems of the outdoor mass culture device, by cultivating a high concentration through a small-sized reactor, it is produced at the same or more than the output of the outdoor mass culture device, and the concentration of useful materials is high quality. The product was intended to be produced.

Accordingly, since the 1980s, small and small microalgae cultivation photobioreactors, called indoors, which have a small size and high concentration of cultivation, have been researched and developed. Although the initial investment and maintenance and maintenance costs are relatively high, there are advantages in that high cell growth rate can be expected and operating conditions can be easily adjusted.

Currently developed forms include general stirred reactors, plate reactors, tubular reactors, column reactors, etc., and in all these types of reactors, efficient transmission of light is the most important point in reactor design.

When the concentration of microalgae cells is low, medium and gas injection are the most important factors for cell proliferation, but when the high concentration is reached, the brightness is the most important factor. This is because the higher the concentration, the shorter the light transmission length.

That is, the light applied while the microalgae is incubated becomes more and more bulky as the microalgae grows, so that the microalgae on the surface of the reactor can continue to receive light, but the microalgae inside the reactor are microalgae on the surface. Because of the shadow effect will not be able to receive enough light to grow.

However, most of the microalgae microalgae cultivation photobioreactors designed to date do not overcome this point, and thus, their production efficiency is lower than that of other microalgae bioreactors.

To overcome this and to transmit light efficiently. Recently, an optical bioreactor for culturing microalgae using an internal light source has been studied.

Widely used microalgae cultivation photobioreactors include tubular microalgae cultivation photobioreactors and panel-type microalgae cultivation photobioreactors using sunlight as an external light source. The reactor has a structure in which the narrow and long rectangular or cylindrical pipes are densely adhered to circulate the culture in order to maximize the irradiation area exposed to sunlight and to shorten the light transmission distance into the culture.

The photobioreactor for culturing microalgae has its disadvantages in each form. In particular, the reactor using the fiber as the internal light source has a good light efficiency, but there is a problem that cells adhere to the surface of the optical fiber.

In addition, in the case of using a light source such as a fluorescent lamp as an internal light source, there is a problem in that the device must be operated continuously and accordingly excessive use of electricity (energy) is not efficient.

The present invention has been made to solve the above problems, the microalgae is not attached to the inside of the reaction vessel, maximize the light irradiation efficiency to increase the productivity of the microalgae, cultivate the microalgae using sunlight It is to provide a microalgae cultivation photomicrobial reactor and a microalgae production apparatus having the same so that it can be operated without receiving energy from the outside.

The microbial photoreactor for culturing microalgae in which the photosynthetic reaction, which is a biological carbon dioxide immobilization, according to the present invention for achieving the above object is provided with a plurality of inlets and outlets, and a rectangular parallelepiped having a diffusion lens installed on one side in a longitudinal direction. Type reaction vessel; A reaction vessel cover part positioned at a predetermined distance from a surface in the longitudinal direction of one side of the reaction vessel and directly receiving sunlight; And a plurality of light emitting units provided in the reaction vessel and supplying light energy to the microalgae to incubate the microalgae inside the reaction vessel.

In addition, on one side in the width direction of the reaction vessel is provided with a carbon dioxide inlet, a culture medium inlet as an inlet, a microalgae outlet as an outlet, on the opposite side is provided with a carbon dioxide outlet, a culture outlet, as an inlet It is preferable that the microalgae inlet is provided.

The reaction vessel is made of tempered glass, polycarbonate, or acrylic-based material having excellent translucency and mechanical strength, and the inner or outer surface of the reaction vessel is preferably coated with titanium oxide (TiO₂).

The reaction vessel cover part is preferably composed of a transparent plate for transmitting light to the diffusion lens inside the reaction vessel and the film-type solar panel that receives the sunlight to generate electrical energy and store it in the storage battery. .

The light emitting unit may include a light source unit emitting light by using the electric energy supplied from the storage battery, and a light guide plate provided inside the reaction vessel to allow the light emitted from the light source unit to be uniformly spread in the reaction vessel. desirable.

The light source unit may be a fluorescent lamp or a high brightness LED, and the light guide plate may be gradually thinner in one direction, and may have a round shape at an end thereof to uniformly emit light supplied from the light source unit. Do.

On the other hand, the microalgae cultivation optical bioreactor according to another preferred embodiment for achieving the object of the present invention is provided with a plurality of inlet and outlet and the rectangular parallelepiped is provided with a diffusion lens at a predetermined interval on one side in the longitudinal direction Reaction vessel; A reaction vessel cover part positioned at a predetermined distance from a surface in the longitudinal direction of one side of the reaction vessel and directly receiving sunlight; And a plurality of light emitting parts provided between the reaction container and the reaction container cover part and supplying light energy to the reaction container side for culturing the microalgae inside the reaction container.

In addition, on one side in the width direction of the reaction vessel is provided with a carbon dioxide inlet, a culture medium inlet as an inlet, a microalgae outlet as an outlet, on the opposite side is provided with a carbon dioxide outlet, a culture outlet, as an inlet It is preferable that the microalgae inlet is provided.

The reaction vessel is made of tempered glass, polycarbonate, or acrylic-based material having excellent translucency and mechanical strength, and the inner or outer surface of the reaction vessel is preferably coated with titanium oxide (TiO₂).

The reaction vessel cover part is preferably composed of a transparent plate for transmitting light to the diffusion lens inside the reaction vessel and the film-type solar panel that receives the sunlight to generate electrical energy and store it in the storage battery. .

The light emitting unit is preferably an active light emitting diode (OLED).

According to another embodiment of a microalgae production apparatus according to another preferred embodiment for achieving the object of the present invention, a rectangular parallelepiped type having a raw material input port and a discharge port of a product material and provided with a diffusion lens at a predetermined interval on one side in the longitudinal direction Reaction vessel; A reaction vessel cover portion positioned at a predetermined distance from a surface in the longitudinal direction of one side of the reaction vessel, directly receiving sunlight, and having a transparent portion and a film-type solar panel; And a microalgae culturing optical bioreactor comprising a plurality of light emitting units for supplying light energy to incubate the microalgae inside the reaction vessel; A carbon dioxide flow tube connected to the reaction vessel and connecting the carbon dioxide inlet and the outlet to the tube structure; A culture fluid flow tube connected to the reaction vessel and connecting the culture solution inlet and the outlet to the tube structure; A microalgae flow tube connected to the reaction vessel and connecting the microalgae inlet and the outlet to the tube structure; A support for supporting the microalgae culture photobioreactor to be inclined at a predetermined angle; A support case connected to the support part and installed on the ground to fix the support part; And a storage battery provided in the support case and connected to the reaction vessel cover portion through an electric wire, and storing the electrical energy generated through the film-type solar panel of the reaction vessel cover portion.

It is preferably provided in the support case, and further provided on the path of each flow pipe further comprises a pump unit for applying pressure to the inside of each flow pipe to circulate the flow material.

The reaction vessel is made of tempered glass, polycarbonate, or acrylic-based material having excellent light transmittance and mechanical strength, and the inner or outer surface of the reaction vessel is preferably coated with titanium oxide (TiO₂).

The light emitting unit may include a light source unit emitting light by using the electric energy supplied from the storage battery, and a light guide plate provided inside the reaction vessel to allow the light emitted from the light source unit to be uniformly spread in the reaction vessel. desirable.

The light source unit is a fluorescent lamp or a high-brightness LED, the light guide plate is gradually thinner in one direction, it is preferable to round the shape of the end so as to uniformly emit the light supplied from the light source.

In addition, the light emitting unit is provided between the reaction vessel and the reaction vessel cover portion, it is preferable that the active light emitting diode (OLED) for supplying light energy to the reaction vessel side to incubate the microalgae inside the reaction vessel.

The support or support case is preferably manufactured using zinc galvanizing steel or stainless steel with high corrosion resistance to brine.

According to the present invention configured as described above, the microalgae generated in the microalgae cultivation photomicroorganism of the present invention is not attached to the inside of the reaction vessel, and the light guide plate or OLED is used to maximize the light source irradiation efficiency to increase the productivity of the microalgae By increasing the cultivation of microalgae using sunlight, it is effective to operate continuously for 24 hours without receiving energy from the outside.

The above objects, features and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, an optical bioreactor for microalgae culture and a microalgae production apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a front view of the photobioreactor for microalgae culture according to an embodiment of the present invention.

 First, the microalgae cultivation optical bioreactor 200 of the present invention shown in Figure 1 is provided with a plurality of inlets and outlets and the rectangular parallelepiped is provided with a diffusion lens 50 at a predetermined interval on one side in the longitudinal direction Reaction vessel 10 of the reaction vessel is located at a predetermined distance from the surface in the longitudinal direction of one side of the reaction vessel 10 and the reaction vessel cover portion 20 to directly receive sunlight, provided inside the reaction vessel 10 It is composed of a plurality of light emitting unit for supplying light energy to the microalgae in order to incubate the microalgae in the reaction vessel (10).

The reaction vessel 10 may be made of tempered glass, polycarbonate, or acrylic-based material having excellent light transmittance and mechanical strength. In order to accommodate the sunlight and the microalgae inside the breeding well, the reaction vessel 10 must be transparent and well transmitted, so if other conditions are satisfied, other materials may be used as the production material of the reaction vessel 10. .

The inner or outer surface of the reaction vessel 10 is preferably coated with titanium oxide (TiO₂) (18). The inner surface of the reaction vessel 10 may be dirty by attaching microalgae or organic materials, or contaminated by adhering materials. In the case of the titanium oxide (TiO₂) coating 18, since the microalgae does not adhere to the inner surface of the reaction vessel 10, the inner surface of the reaction vessel 10 may be clean and pollution may be prevented.

Titanium oxide (TiO₂) coating 18 may also be applied to the outer surface of the reaction vessel 10, in which case it is possible to prevent contamination by dust and the like in the general atmosphere and to maintain a clean state.

If titanium oxide (TiO₂) is used as the coating material, photocatalytic decomposition occurs, and soot (mostly carbon) contained in the exhaust gas of the plant is also decomposed by ultraviolet rays, so that the external surface can be kept clean.

A coating method other than titanium oxide (TiO₂) may be used to prevent the microalgae from adhering to the reaction vessel 10.

 3 and 4 show the inlet and outlet formed on the surface in the width direction of the reaction vessel (10). Figure 3 shows the surface in the width direction of the high position when the microalgae cultivation optical bioreactor 200 of Figure 1 is installed and Figure 4 is when the microalgae cultivation optical bioreactor 200 of Figure 1 is installed It shows the surface of the width direction of a low position.

3 and 4, the carbon dioxide and the culture solution flow in a clockwise direction, that is, the upper direction of the reaction vessel 10, so that the width of the carbon dioxide and the culture medium in the high position at the time of installation of the microalgae cultivation optical bioreactor 200 The carbon dioxide outlet 11 and the culture medium outlet 12 are formed in the side of the direction (Fig. 3), the carbon dioxide in the width direction (Fig. 4) in the lower position at the time of installation of the microalgae culture photobioreactor 200 Inlet 14, culture medium inlet 15 is formed.

In addition, the microalgae produced in the reaction vessel 10 flows counterclockwise, that is, the downward direction of the reaction vessel 10 to facilitate its collection, so that the high position when the microalgae cultivation optical bioreactor 200 is installed. The microalgae inlet 13 is formed in the widthwise surface (FIG. 3) in the width direction, and the microalgae outlet 16 in the widthal surface (FIG. 4) at a lower position when the microalgae cultivation photobioreactor is installed. Is formed.

Inside the reaction vessel 10, the diffusion lens 50 is installed at a predetermined interval on one side in the longitudinal direction. The diffusion lens 50 allows the light energy transmitted through the reaction vessel cover 20 to be evenly transmitted to the reaction vessel surface and the reaction vessel.

In the present invention, the reaction vessel 10 may have a rectangular parallelepiped shape, but may be a polyhedron or a spherical body such as a cube, or another shape.

The reaction vessel cover part 20 is installed at a position spaced apart from the surface in one longitudinal direction of the reaction vessel 10 by a predetermined distance.

As shown in FIG. 5, the reaction vessel cover unit 20 transmits sunlight and transmits light to the diffusion lens 50 inside the reaction vessel 20. It consists of a film-type solar panel 30 to produce a.

When there is sun in the day, sunlight directly reaches the reaction vessel 10 through the transparent plate 40 of the reaction vessel cover portion 20, and the sunlight is directed to the diffusion lens 50 inside the reaction vessel 10. Light energy is evenly transmitted by the microalgae to grow well.

In addition, when there is the sun during the day, the film-type solar panel 30 of the reaction vessel cover unit 20 receives sunlight to generate electrical energy and store it in a storage unit such as a storage battery.

Since the sunlight is weak at night when the weather is cloudy or when there is no rainy season or light, by supplying the electrical energy obtained by the film-type solar panel 30 of the reaction vessel cover unit 20 to the light emitting unit inside the reaction vessel, the constant brightness is always constant. The amount of light to be introduced into the reaction vessel (10). This allows the microalgae to be cultured continuously for 24 hours regardless of external conditions.

The light emitting part of the microalgae cultivation optical bioreactor 200 shown in FIG. 1 is provided in the reaction vessel 10, and supplies light energy to incubate the microalgae inside the reaction vessel 10.

6 and 7 illustrate a light emitting unit provided in the microalgae culture optical bioreactor 200 according to FIG. 1. FIG. 6 is a front view of the light emitting unit, and FIG. 7 is a plan view of the light emitting unit.

The light emitting unit is provided in the light source unit 70 and the reaction vessel 10 that emits light by receiving electricity from a storage battery that stores electrical energy so that the light emitted from the light source unit 70 is uniformly inside the reaction vessel 10. It consists of a light guide plate 60 to be spread out.

As the light source unit 70, a fluorescent lamp or a high brightness LED is used, and is installed on one side of the light guide plate in a small circular shape. In addition, other light emitting devices may be used as the light source unit and may have a long rod shape instead of a circle.

The light guide plate 60 gradually becomes thin in one direction, and rounds the shape of the end 61 thereof so as to uniformly emit light supplied from the light source unit 70.

The light guide plate 60 causes the light to be refracted to be emitted to the light guide plate plane in the longitudinal direction when the light is irradiated onto a thick surface of the light guide plate 60.

In addition, in order to further diffuse light into the light guide plate, a prism plate and a diffusion plate may be attached to the surface of the light guide plate in the longitudinal direction.

The microalgae cultivation optical bioreactor 200 ′ of the present invention shown in FIG. 2 is provided with a plurality of inlets and outlets, and has a rectangular parallelepiped type in which diffusion lenses 50 are installed at predetermined intervals on one side in a longitudinal direction. Reaction vessel 10, the reaction vessel cover portion 20 which is located at a predetermined distance from the longitudinal direction of one side of the reaction vessel 10 and directly receives sunlight, the reaction vessel 10 and the reaction vessel It is provided between the cover portion 20 and consists of a plurality of light emitting portion for supplying light energy to the reaction vessel 10 side to incubate the microalgae inside the reaction vessel (10).

Main components of the microalgae cultivation optical bioreactor 200 according to another embodiment shown in Figure 1 of the major components of the microalgae cultivation optical bioreactor 200 'according to an embodiment shown in FIG. The same as and use the same sign.

The reaction vessel 10 may be made of tempered glass, polycarbonate, or acrylic-based material having excellent light transmittance and mechanical strength. In order to accommodate the sunlight and to breed the microalgae inside, the reaction vessel 10 must be transparent and well transmitted. Therefore, other materials may be used as a preparation material of the reaction vessel 10 if such conditions are satisfied.

The inner or outer surface of the reaction vessel 10 is preferably coated with titanium oxide (TiO₂) (18). The inner surface of the reaction vessel 10 may be dirty by attaching microalgae or organic materials, or contaminated by adhering materials. In the case of the titanium oxide (TiO₂) coating 18, since the microalgae does not adhere to the inner surface of the reaction vessel 10, the inner surface of the reaction vessel 10 may be clean and pollution may be prevented.

Titanium oxide (TiO₂) coating 18 may also be applied to the outer surface of the reaction vessel 10, in which case it is possible to prevent contamination by dust and the like in the general atmosphere and to maintain a clean state.

If titanium oxide (TiO₂) is used as the coating material, photocatalytic decomposition occurs, so that the soot (mostly carbon) contained in the exhaust gas of the plant is also decomposed by ultraviolet rays, so that the external surface can be kept clean.

A coating method other than titanium oxide (TiO₂) may be used to prevent the microalgae from adhering to the reaction vessel 10.

 3 and 4 show the inlet and outlet formed on the surface in the width direction of the reaction vessel (10). Figure 3 shows the surface in the width direction of the high position when the microalgae cultivation optical bioreactor 200 'of Figure 2 is installed and Figure 4 is the microbial cultivation optical bioreactor 200' of Figure 2 is installed When it is shown in the width direction of the lower position.

3 and 4, the carbon dioxide and the culture solution flow in a clockwise direction, that is, in an upward direction of the reaction vessel 10, so that the carbon dioxide and the culture solution are located at a high position when the microalgae cultivation optical bioreactor 200 ′ is installed. The carbon dioxide outlet 11 and the culture liquid outlet 12 are formed in the surface in the width direction (FIG. 3), and the surface in the width direction in the lower position when the microalgae culture photobioreactor 200 ′ is installed (FIG. 4). In the carbon dioxide inlet 14, the culture solution inlet 15 is formed.

In addition, the microalgae produced in the reaction vessel 10 flows counterclockwise, that is, downward direction of the reaction vessel 10 to facilitate its collection, so that the microalgae produced during the installation of the microalgae culturing optical bioreactor 200 ′ are high. The microalgae inlet 13 is formed in the widthwise surface (FIG. 3) at the position, and the surface in the widthwise direction (FIG. 4) at the lower position when the microalgae culture photobioreactor 200 ′ is installed is fine. An algae outlet 16 is formed.

Inside the reaction vessel 10, the diffusion lens 50 is installed at a predetermined interval on one side in the longitudinal direction. The diffusion lens 50 allows the light energy transmitted through the reaction vessel cover 20 to be evenly transmitted to the reaction vessel surface and the reaction vessel.

In the present invention, the reaction vessel 10 may have a rectangular parallelepiped shape, but may be a polyhedron or a spherical body such as a cube, or another shape.

The reaction vessel cover part 20 is installed at a position spaced apart from the surface in one longitudinal direction of the reaction vessel 10 by a predetermined distance.

As shown in FIG. 5, the reaction vessel cover unit 20 transmits sunlight and transmits light to the diffusion lens 50 inside the reaction vessel 20. It consists of a film-type solar panel 30 to produce a.

When there is sun in the day, sunlight directly reaches the reaction vessel 10 through the transparent plate 40 of the reaction vessel cover portion 20, and the sunlight is directed to the diffusion lens 50 inside the reaction vessel 10. Light energy is evenly transmitted by the microalgae to grow well.

In addition, when there is the sun during the day, the film-type solar panel 30 of the reaction vessel cover unit 20 receives sunlight to generate electrical energy and store it in a storage unit such as a storage battery.

Since the sunlight is weak at night when the weather is cloudy or when there is no rainy season or light, the electrical energy obtained by the film-type solar panel 30 of the reaction vessel cover portion 20 is transferred to the reaction vessel 10 and the reaction vessel cover portion 20. By supplying to the light emitting unit between the), so that the light quantity of a constant brightness can always be introduced into the reaction vessel (10). This allows the microalgae to be cultured continuously for 24 hours regardless of external conditions.

The light emitting unit is preferably an active light emitting diode (OLED) 130. The active light emitting diode (OLED) 130 is also referred to as an organic diode or an organic EL. It refers to a self-luminous organic material that emits light by using electroluminescence which emits light when electric current flows through the fluorescent organic compound. The active light emitting diode (OLED) 130 can be driven at a low voltage and can be made thin. Therefore, even when the shape of the reaction vessel 10 is not a rectangular parallelepiped, a polyhedron, a circular shape, or other shapes, the active light emitting diode OLED may be deformed as the light emitting part, and thus, various applications are possible.

FIG. 8 illustrates a microalgae production apparatus 300 in which the microalgae cultivation optical bioreactor 200 of FIG. 1 is installed, and FIG. 9 is a microalgae production in which the microalgae cultivation optical bioreactor 200 'of FIG. 2 is installed. Device 300 'is shown. The configuration and operation method of the microalgae production apparatus 300 and 300 'will be described below with reference to FIGS. 8 and 9.

The microalgae production apparatus 300 and 300 ′ shown in FIGS. 8 and 9 have a rectangular parallelepiped type in which a diffusion lens 50 is installed at predetermined intervals on one side of a longitudinal direction and provided with a raw material inlet and a discharge port of a product. Reaction vessel (10) of the reaction vessel 10 is positioned to maintain a predetermined distance from the surface in the longitudinal direction of one side of directly receiving sunlight and composed of a transparent portion 40 and a film-type solar panel 30 The microalgae culturing optical bioreactor (200.200 ') and the reaction vessel including a reaction vessel cover portion 20 and a plurality of light emitting units for supplying light energy to incubate the microalgae inside the reaction vessel 10 ( 10 is connected to the carbon dioxide flow pipe 80 to connect the carbon dioxide inlet 14 and outlet 11 in a tubular structure, the reaction vessel 10 is connected to the culture solution inlet 15 and the outlet 12 in a tubular structure A culture fluid flow pipe (81) for connecting The microalgae flow tube 82 is connected to the reaction vessel 10 and connects the microalgae inlet 13 and the outlet 16 in a tubular structure, and the microalgae cultivation optical bioreactor 200 and 200 ′ is inclined at a predetermined angle. The support unit 90 to be supported, the support case 110 is connected to the support unit 90 and installed on the ground so that the support unit 90 is fixed, provided in the support case 110 and the reaction vessel cover portion ( 20 and a wire connected thereto, and are installed in the storage battery 120 and the support case 110 to store electrical energy generated through the film-type solar panel 30 of the reaction vessel cover 20. The pump unit 100 is provided on the path of each of the flow pipes 80, 81, and 82 to apply pressure to each of the flow pipes 80, 81, and 82 to circulate the flow material.

The reaction vessel 10 is made of tempered glass, polycarbonate, or acrylic-based material having excellent light transmittance and mechanical strength, and the inner or outer surface of the reaction vessel 10 is coated with titanium oxide (TiO₂). desirable.

The inner surface of the reaction vessel 10 may be dirty by attaching microalgae or organic materials, or contaminated by adhering materials. In the case of the titanium oxide (TiO₂) coating 12, since the microalgae does not stick to the inner surface of the reaction vessel 10, the inner surface of the reaction vessel 10 may be clean and pollution may be prevented.

Titanium oxide (TiO₂) coating 12 may also be applied to the outer surface of the reaction vessel 10, in which case it is possible to prevent contamination by dust and the like in the general atmosphere and to maintain a clean state.

A coating method other than titanium oxide (TiO₂) may be used to prevent the microalgae from adhering to the reaction vessel 10.

The light emitting unit of the microalgae production apparatus 300 in which the microalgae cultivation optical bioreactor 200 is installed according to an embodiment of the present invention shown in FIG. 8 receives electricity from a storage battery 120 storing electrical energy. It is composed of a light guide plate 60 provided in the light source unit 70 and the reaction vessel 10 for emitting light so that the light emitted from the light source unit 70 can be uniformly spread in the reaction vessel 10.

As the light source unit 70, a fluorescent lamp or a high brightness LED is used, and is installed on one side of the light guide plate in a small circular shape. In addition, other light emitting devices may be used as the light source unit and may have a long rod shape instead of a circle.

The light guide plate 60 gradually becomes thin in one direction, and rounds the shape of the end 61 thereof so as to uniformly emit light supplied from the light source unit 70.

The light guide plate 60 causes the light to be refracted to be emitted to the light guide plate plane in the longitudinal direction when the light is irradiated onto a thick surface of the light guide plate 60.

In addition, in order to further diffuse light into the light guide plate, a prism plate and a diffusion plate may be attached to the surface of the light guide plate in the longitudinal direction.

Since the light emitting unit including the light source unit 70 and the light guide plate 60 is installed, when the amount of light is small, such as on a cloudy day or at night, a predetermined amount of light is introduced into the semi-applicator 10 by using electricity supplied from the battery 120. Can be supplied continuously.

The light emitting unit of the microalgae production apparatus 300 ′ having the microalgae cultivation optical bioreactor 200 ′ according to another embodiment of the present invention shown in FIG. 9 is equipped with a reaction vessel 10 and a reaction vessel cover portion 20. It is preferably provided between the active light emitting diode (OLED) (130).

The active light emitting diode (OLED) 130 is also referred to as an organic diode or an organic EL. It refers to a self-luminous organic material that emits light by using electroluminescence which emits light when electric current flows through the fluorescent organic compound. The active light emitting diode (OLED) 130 can be driven at a low voltage and can be made thin. Therefore, even when the shape of the reaction vessel 10 is not a rectangular parallelepiped, a polyhedron, a circular or other shape, since the active light emitting diode (OLED) 130 can be modified as a light emitting unit, various applications are possible.

By installing a light emitting unit consisting of an active light emitting diode (OLED) 130, when the amount of light is low, such as a cloudy day or night, by using electricity supplied from the storage battery 120 to maintain a certain amount of light into the reaction vessel (10) Can be supplied by

The carbon dioxide flow tube 80 is a tube connecting the carbon dioxide outlet 11 and the carbon dioxide inlet 14 to receive carbon dioxide from the pressure generated by the first pump 101, and the carbon dioxide flows in a circular shape. Or polygons can be used. Carbon dioxide flows in a clockwise direction, and flows from the lower part to the upper part in the reaction vessel 10 installed inclined in the microalgae production apparatus (300,300 ').

A carbon dioxide storage 140 is provided at one side of the carbon dioxide flow tube 80 to supply carbon dioxide into the carbon dioxide flow tube 80. Therefore, when the user wants to supply carbon dioxide into the reaction vessel 10, the user will fill the carbon dioxide storage 140.

The culture medium flow tube 81 is a tube connecting the culture medium outlet 12 and the culture medium inlet 15 to receive the pressure generated by the second pump 102 inside the tube, and the culture medium flows, and the cross section of the flow tube 81 is circular. Or polygons can be used. The culture fluid flows in a clockwise direction, and flows from the lower part to the upper part in the reaction vessel 10 installed inclined in the microalgae production apparatus 300, 300 ′.

A culture solution storage unit 141 is provided at one side of the culture fluid flow tube 81 so that the culture fluid may be supplied into the culture fluid flow tube 81. When the user wants to supply the culture solution into the reaction vessel 10, the culture solution will be supplied and stored in the culture solution storage unit 141.

The microalgae flow tube 82 is a tube connecting the microalgae outlet 16 and the microalgae inlet 13 to receive the pressure generated from the third pump 103 inside the tube to generate the microalgae in the reaction vessel 10. Algae flow counterclockwise. That is, the microalgae flow from the upper part to the lower part in the reaction vessel 10 installed inclined in the microalgae production apparatus 300, 300 ′.

In order to incubate the microalgae, the microalgae are first introduced into the upper portion of the reaction vessel 10, and the introduced microalgae will be spread evenly along the inclined surface of the inclined reaction vessel 10.

The microalgae are grown using carbon dioxide and the culture medium supplied through the carbon dioxide flow tube 80 and the culture medium flow tube 81 as main energy sources.

The grown microalgae flows from the upper portion to the lower portion inside the reaction vessel 10 under pressure through the pump 103 and is discharged to the outside through the microalgal flow tube 82.

In this case, the microalgae is supplied, and the microalgae reservoir 142 is provided at one side of the microalgae flow tube 82 to collect the grown microalgae through the microalgae flow tube 82.

In the microalgae production apparatus 300, 300 ′ shown in FIGS. 8 and 9, the microalgae cultivation photobioreactor 200, 200 ′ is installed to be inclined at a predetermined angle, and a support 90 for supporting the microalgae is required. .

Usually, the galvanizing steel or stainless steel with strong corrosion resistance to brine is used as a material of the support 90. Other materials may be used as the material of the support unit 90 as long as the corrosion resistance is strong.

The support case 110 is connected to the support 90 and is installed on the ground so that the support 90 is fixed. Support case 110 also uses a strong corrosion resistant zinc galvanizing steel or stainless steel. Other materials may be used as the material of the support unit 90 as long as the corrosion resistance is strong.

The pump unit 100 is installed inside the support case and is provided on the path of each of the flow tubes 80, 81, 82 to apply pressure to each of the flow tubes 80, 81, 82 so as to circulate the fluid smoothly. do.

In the pump unit 100, a first pump 101, a second pump 102, and a third pump 103 are installed. The first pump 101 is provided on the path of the carbon dioxide flow tube 80 and applies pressure to the inside of the flow tube 80 so that the carbon dioxide circulates well. The second pump 102 is provided on the path of the culture fluid flow tube 81 and applies pressure to the inside of the flow tube 81 so that the culture fluid can be circulated smoothly. 3 is provided on the path of the microalgae flow tube 82 and applies pressure to the inside of the flow tube 82 to smoothly circulate the microalgae.

An air bubble may be used to smoothly circulate fluid in each flow tube.

The storage battery 120 is installed inside the support case 110, and is connected to the reaction vessel cover portion 20 through an electric wire, and the electricity generated through the film-type solar panel 30 of the reaction vessel cover portion 20. The energy is stored, and the stored electric energy is supplied to the light emitting part of the microalgae culture photobiological reactor 200, 200 ′.

In addition, other electrical energy storage means other than the battery 120 may be used.

While preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments. That is, those skilled in the art to which the present invention pertains can make many changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications are possible. Equivalents should be considered to be within the scope of the present invention.

As proposed in the present invention, when the microalgae cultivation photobioreactor equipped with a light emitting unit and a solar panel is used to supply light continuously for 24 hours using sunlight, the microbial cultivation photobioreactor is provided. Whatever the structure, the light is uniformly transmitted into the reaction vessel, and thus the industrial use is very high.

1 is a front view of an optical bioreactor for microalgae culture according to an embodiment of the present invention.

Figure 2 is a front view of the optical bioreactor for microalgae culture according to another embodiment of the present invention.

Figure 3 is a view showing the inlet and outlet formed on one side of the width direction of the reaction vessel shown in FIG.

4 is a view showing the inlet and outlet formed on the opposite side of Figure 3 shown in FIG.

5 is a plan view of the reaction vessel cover portion according to an embodiment of the present invention shown in FIG.

Figure 6 is a front view of the light emitting unit provided in the microalgae culture photobioreactor shown in FIG.

7 is a plan view of the light emitting unit provided in the microalgae culture photobioreactor shown in FIG.

FIG. 8 is a front view of a microalgae production apparatus in which an optical bioreactor for microalgae cultivation according to an embodiment of the present invention shown in FIG. 1 is installed;

Figure 9 shows a front view of the microalgae production apparatus is installed microbial photoreactor for microalgae culture according to an embodiment of the present invention shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: reaction vessel 18: titanium oxide coating

20: reaction vessel cover portion 30: film-type solar panel

40: transparent plate 50: diffused lens

60: light guide plate 70: light source

80: carbon dioxide flow tube 81: culture fluid flow tube

82: microalgae flow tube 90: support

100: pump 110: support case

120: storage battery 130: active light emitting diode (OLED)

200, 200 ': microbial reactor for microalgae culture

300, 300 ': Micro algae production device

Claims (19)

In the microalgae cultivation photobioreactor in which a photosynthetic reaction, which is a biological carbon dioxide immobilization, occurs, A rectangular parallelepiped reaction container 10 having a plurality of inlets and outlets at both ends and having a plurality of diffusion lenses 50 on one inner side of the longitudinal direction; A reaction vessel cover part 20 positioned to maintain a predetermined distance from a longitudinal surface of one side of the reaction vessel 10 having the diffusion lens 50 and directly receiving sunlight; And, It is provided in the reaction vessel 10 and a plurality of light emitting unit for supplying light energy to the microalgae in order to incubate the microalgae in the reaction vessel 10; Photobioreactor. The method of claim 1, On one side in the width direction of the reaction vessel 10 is provided with a carbon dioxide inlet 14, a culture medium inlet 15 as an inlet, a microalgae outlet 16 is provided as an outlet, carbon dioxide as an outlet on the opposite side The discharge port 11, the culture solution discharge port 12 is provided, the microalgae inlet 13 is provided as a microalgae inlet for microalgae culture. The method of claim 1, The reaction vessel 10 is made of tempered glass, polycarbonate, or acrylic-based material having excellent translucency and mechanical strength, and the inside or the outer surface of the reaction vessel is titanium oxide (TiO₂) coated light for microalgae culture. Bioreactor. The method of claim 1, The reaction vessel cover portion 20 receives the transparent plate 40 and sunlight to transmit light to the diffusion lens 50 inside the reaction vessel 10 to generate sunlight and generate electrical energy. 120) A microbial culture photobiological reactor, characterized in that consisting of a film-type solar panel 30 to store it. The method of claim 1, The light emitting unit is provided in the light source unit 70 and the reaction vessel 10 that emits light using the electrical energy supplied from the battery 120, and the light emitted from the light source unit 70 is the reaction vessel 10. The microalgae culturing optical bioreactor, characterized in that consisting of a light guide plate 60 to be constantly spread therein. The method of claim 5, wherein The light source unit 70 is a microalgae culture optical bioreactor, characterized in that the fluorescent or high brightness LED. The method of claim 5, wherein The light guide plate 60 is gradually thinned in one direction, and rounded the shape of the end 61 of the microalgae culture, characterized in that to uniformly emit the light supplied from the light source unit 70 Photobioreactor for. In the microalgae cultivation photobioreactor in which a photosynthetic reaction, which is a biological carbon dioxide immobilization, occurs, A rectangular parallelepiped reaction container 10 having a plurality of inlets and outlets at both ends and having a plurality of diffusion lenses 50 on one inner side of the longitudinal direction; A reaction vessel cover part 20 directly receiving sunlight to be positioned at a predetermined distance from a surface in the longitudinal direction of one side of the reaction vessel 10 having the diffusion lens 50; And, And a plurality of light emitting units provided between the reaction vessel 10 and the reaction vessel cover portion 20 and supplying light energy to the microalgae to incubate the microalgae inside the reaction vessel 10. Photomicroorganism reactor for microalgae culture, characterized in that. The method of claim 8, On one side in the width direction of the reaction vessel 10 is provided with a carbon dioxide inlet 14, a culture medium inlet 15 as an inlet, a microalgae outlet 16 is provided as an outlet, carbon dioxide as an outlet on the opposite side The discharge port 11, the culture solution discharge port 12 is provided, the microalgae inlet 13 is provided as a microalgae inlet for microalgae culture. The method of claim 8, The reaction vessel 10 is made of tempered glass, polycarbonate, or acrylic-based material having excellent translucency and mechanical strength, and the inner or outer surface of the reaction vessel 10 is a microalgae characterized in that the titanium oxide (TiO₂) coating Photobioreactor for culture. The method of claim 8, The reaction vessel cover portion 20 receives the transparent plate 40 and sunlight to transmit light to the diffusion lens 50 inside the reaction vessel 10 to generate sunlight and generate electrical energy. 120) A microbial culture photobiological reactor, characterized in that consisting of a film-type solar panel 30 to store it. The method of claim 8, The light emitting unit is an active light emitting diode (OLED) 130, characterized in that the microalgae culture photobiological reactor. A rectangular parallelepiped reaction container having a raw material inlet and an outlet of a product material and having diffusion lenses 50 installed on one side in a longitudinal direction at regular intervals; Reaction vessel cover portion 20 which is positioned to maintain a predetermined distance from the surface in the longitudinal direction of one side of the reaction vessel 10 and directly receives sunlight and composed of a transparent plate 40 and a film-type solar panel 30 ; And a microalgae culturing optical bioreactor comprising a plurality of light emitting parts for supplying light energy to incubate the microalgae in the reaction vessel 10. A carbon dioxide flow tube 80 connected to the reaction vessel 10 and connecting the carbon dioxide inlet 14 and the outlet 11 in a tubular structure; A culture fluid flow tube 81 connected to the reaction vessel 10 and connecting the culture solution inlet 15 and the outlet 12 in a tubular structure; A microalgae flow tube 82 connected to the reaction vessel 10 and connecting the microalgae inlet 13 and the outlet 16 in a tubular structure; A support 90 for supporting the microalgae cultivation photobioreactor to be inclined at a predetermined angle; A support case 110 connected to the support 90 and installed on the ground to fix the support 90; And Is provided in the support case 110 and is connected to the reaction vessel cover portion 20 and the wire, and stores the electrical energy generated through the film-type solar panel 30 of the reaction vessel cover portion 20 Microalgae production apparatus further comprises a storage battery (120). The method of claim 13, The microalgae production apparatus is installed in the support case 110, and further includes a pump unit 100 provided on the path of each flow tube to apply pressure to each flow tube to circulate the flow material. . The method of claim 13, The reaction vessel 10 is made of tempered glass, polycarbonate, or acrylic-based material having excellent translucency and mechanical strength, and the inner or outer surface of the reaction vessel 10 is a microalgae characterized in that the titanium oxide (TiO₂) coating Production equipment. The method of claim 13, The light emitting unit is a light source unit 70 for emitting light using the electrical energy supplied from the storage battery 120; and the light emitted from the light source unit 70 is provided in the reaction vessel 10 and the reaction vessel ( 10) Microalgae production apparatus, characterized in that consisting of; a light guide plate 60 to be uniformly spread therein. The method of claim 16, The light source unit 70 may be a fluorescent lamp or a high brightness LED, and the light guide plate 60 may gradually become thin in one direction, and may round the shape of the end 61 thereof to uniformly emit light supplied from the light source. Microalgae production apparatus, characterized in that. The method of claim 13, The light emitting unit is provided between the reaction vessel 10 and the reaction vessel cover portion 20 and an active light emitting diode for supplying light energy to the reaction vessel 10 side to incubate microalgae inside the reaction vessel 10 ( OLED) 130, characterized in that the microalgae production apparatus. The method of claim 13, The support unit 90 or the support case 110 is a microalgae production apparatus, characterized in that it is manufactured using galvanizing steel or stainless steel strong corrosion resistance to brine.

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