Immobilization Photobioreactor

Abstract

An immobilized photobioreactor is provided. The reactor is composed of a transparent vessel 1, an immobilization material module 2, a number of internal light sources 3, and a porous aeration dish 4. Compared with conventional suspension culture, under operating conditions, the use of the immobilization material module of the present invention increases the microalgae cell concentration from 1.82 g / L to 2.68 g / L, an improvement of approximately 59.5%. This reactor structure significantly improves efficiency, and the immobilization material module provides a stable attachment area. The light source distance is fixed, effectively increasing the cell density and simultaneously improving CO2 absorption efficiency.

Description

[Technical Field]

[0001] The present invention relates to an immobilization photobioreactor, particularly to a photobioreactor for microalgae, and further to a reactor structure with an immobilization material module and an internal light source, which can effectively improve the microalgae cell concentration and carbon dioxide (CO2) removal efficiency, and is applicable to fixed-bed and suspended culture of different microalgae. [Background technology]

[0002] Conventional photobioreactors (PBRs) typically cultivate microalgae in transparent containers using external or internal light sources. This design has been widely applied in carbon capture, wastewater treatment, biofuel production, and high-value chemical production. However, microbial concentration enhancement is always limited by issues such as light penetration depth, shading, and cell settling. While immobilization technology has been applied to wastewater treatment and reactor systems to address cell churn and low cell density in suspension systems, a structured modular and integrated design has not been realized for microalgae photobioreactor applications. Therefore, conventional designs are generally not practical.

[0003] In order to solve the above-mentioned drawbacks, the inventor has conducted careful research and utilized scientific principles to propose the present invention, which can effectively solve the above-mentioned drawbacks and has a rational design. DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] The main purpose of this invention is to provide a microalgae photobioreactor that overcomes the above-mentioned problems of the prior art. The reactor structure is equipped with an immobilization material module and an internal light source, which can effectively improve the microalgae cell concentration and CO2 removal efficiency, and is an immobilization photobioreactor that can be used for fixed-bed and suspended culture of different microalgae. [Means for solving the problem]

[0005] To achieve the above objectives, the immobilization photobioreactor of the present invention includes a transparent container on which a vertical support frame is installed; an immobilization material module that is suspended from the vertical support frame to cover the microalgae and immobilization material and stably floats in the center of the transparent container, thereby providing a stable attachment area; multiple internal light sources that are arranged in a ring shape or uniformly distributed on the inner wall of the transparent container to illuminate the immobilization material module 360 ​​degrees with a stable and controllable light intensity to avoid a light shading effect, and the photoperiod, light intensity, and light wavelength of the internal light sources are programmably controlled; and a porous aeration dish that is installed at the bottom of the transparent container to uniformly distribute carbon dioxide (CO2) of different concentrations throughout the transparent container.

[0006] According to an embodiment of the present invention, the transparent container is a cylindrical or rectangular transparent container.

[0007] According to an embodiment of the present invention, the immobilizing material is polyurethane foam, nonwoven fabric, natural fiber, activated carbon, plastic material, or foam stone.

[0008] According to an embodiment of the present invention, the transparent container further comprises a plurality of external light sources disposed around the transparent container.

[0009] According to an embodiment of the present invention, the internal and external light sources are light emitting diodes (LEDs), fluorescent lamps, or light bulbs.

[0010] According to an embodiment of the present invention, a power supply terminal is connected to the top of the transparent container to supply power to illuminate the internal light source.

[0011] According to an embodiment of the present invention, the power supply terminal is a power supply device that uses a general power source or solar energy.

[0012] According to an embodiment of the present invention, the program is controlled by a central control unit, which stores at least one set of photoperiod and spectrum parameters for different microalgae varieties and cultivation stages.

[0013] The features and technical contents of the present invention will be described in detail below with reference to the drawings. However, these drawings are for reference and explanation purposes only and the present invention is not limited thereby. BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Figure 1 is a conceptual structural diagram of an immobilization photobioreactor according to the present invention. As shown in the figure, the immobilization photobioreactor 100 according to the present invention is composed of a transparent container 1, an immobilization material module 2, multiple internal light sources 3, and a porous aeration dish 4.

[0015] The transparent container 1 is a cylindrical or rectangular transparent container, and a vertical support frame 11 is installed.

[0016] The immobilization material module 2 is suspended from the vertical support frame 11 so as to cover the microalgae and immobilization material, and is stably suspended in the center of the transparent container 1 .

[0017] The internal light sources 3 are installed on the inner wall of the transparent container 1 in a ring shape or uniform distribution, and the light illuminates the immobilization material module 2 in 360 degrees. The photoperiod, light intensity and light wavelength of the internal light sources 3 are controlled by a program.

[0018] The porous aeration dish 4 is placed at the bottom of the transparent vessel 1 to uniformly distribute different concentrations of carbon dioxide (CO2) in the transparent vessel 1. As described above, a novel immobilization photobioreactor 100 is constructed.

[0019] According to a more preferred embodiment of the present invention, the immobilizing material is polyurethane foam, nonwoven fabric, natural fiber, activated carbon, plastic material or foam stone.

[0020] According to a more preferred embodiment of the present invention, the internal light source 3 is a light emitting diode (LED), a fluorescent lamp, or a light bulb.

[0021] According to a more specific embodiment of the present invention, the transparent container 1 further includes a plurality of external light sources 5 arranged around the transparent container 1. The internal light sources 3 and the external light sources 5 are light emitting diodes (LEDs), fluorescent lamps, or light bulbs.

[0022] According to a more specific embodiment of the present invention, a power supply terminal 12 is connected to the top of the transparent container 1 to supply power for illuminating the internal light source 3 (and the external light source 5), and the power supply terminal can be a general power source or a solar energy power supply device.

[0023] According to a more specific embodiment of the present invention, the program is controlled by a central control unit (not shown in the figure), which stores at least one set of photoperiod and spectrum parameters for different microalgae varieties and cultivation stages.

[0024] As described above, the present invention proposes an immobilization photobioreactor 100 that improves bacterial cell concentration and CO2 removal efficiency, and its features are as follows: 1. A hanging immobilization material module 2 is installed in a transparent container 1, and the microalgae are covered with an immobilization material (polyurethane foam, nonwoven fabric, natural fiber, activated carbon, plastic material, or adhesive material such as foaming stones), and the module is suspended from a vertical support frame 11, allowing the light source to irradiate the microalgae in 360 degrees. 2. Multiple sets of external light sources are mounted around the transparent container 1 and on the inner wall in a ring-shaped or uniform distribution pattern, which can provide stable and controllable light intensity, not only avoiding the shading effect, but also allowing the photoperiod, light intensity and light wavelength to be controlled by program. 3. Experiments have shown that, compared with conventional suspension culture, the proposed immobilized photobioreactor can increase the microalgae cell concentration from 1.82 g / L to 2.68 g / L under the same operating conditions by using the immobilization material module of the present invention, which is an improvement of approximately 59.5%. The reactor structure significantly improves its efficiency, and the immobilization material module provides a stable attachment area. The light source distance is fixed, which effectively increases the cell density and improves the CO2 absorption efficiency.

[0025] As described above, the immobilization photobioreactor of the present invention can effectively overcome the drawbacks of the conventional technology. By utilizing the reactor structure of the immobilization material module and the internal light source, the microalgae cell concentration and carbon dioxide (CO2) removal efficiency can be effectively improved. It can be applied for fixed bed and floating culture of different microalgae. Therefore, the present invention is more advanced and practical, and a request for utility model registration is filed in accordance with the law.

[0026] The above is merely a better embodiment of the present invention, and the present invention is not limited thereby. All equivalent changes and modifications made based on the scope of the invention registration claims and the contents of the specification of the present invention are included in the scope of the invention registration claims of the present invention. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a conceptual diagram of the structure of an immobilized photobioreactor according to the present invention. [Explanation of symbols]

[0028] 1: Transparent container 11: Vertical support frame 12: Power supply end 100: Immobilized photobioreactor 2: Immobilization material module 3: Internal light source 4: Porous aeration dish 5: External light source

Claims

1. a transparent container in which a vertical support frame is mounted; an immobilization material module that is suspended from the vertical support frame and stably floats in the center of the transparent container so as to cover the microalgae and the immobilization material, thereby providing a stable attachment area; A plurality of internal light sources are arranged in a ring shape or uniform distribution and installed on the inner wall of the transparent container, thereby illuminating the immobilization material module 360 ​​degrees with a stable and controllable light intensity so as to avoid the light shading effect, and the photoperiod, light intensity and light wavelength of the internal light sources are controlled by a program; and The transparent container is placed at the bottom and contains carbon dioxide (CO 2 and a porous aeration dish for uniformly distributing the liquid in the transparent container. An immobilized photobioreactor characterized by:

2. 2. The immobilization photobioreactor according to claim 1, wherein the transparent container is a transparent container having a cylindrical or rectangular pillar shape.

3. 2. The immobilization photobioreactor according to claim 1, wherein the immobilization material is polyurethane foam, nonwoven fabric, natural fiber, activated carbon, plastic material, or foam stone.

4. 2. The immobilized photobioreactor according to claim 1, wherein the internal light source is a light emitting diode (LED), a fluorescent lamp, or a light bulb.

5. 2. The immobilized photobioreactor according to claim 1, further comprising a plurality of external light sources arranged around the transparent container.

6. 6. The immobilized photobioreactor according to claim 5, wherein the external light source is an LED, a fluorescent lamp, or a light bulb.

7. 2. The immobilized photobioreactor according to claim 1, wherein a power supply terminal for supplying power for illuminating the internal light source is connected to the top of the transparent container.

8. 8. The immobilized photobioreactor according to claim 7, wherein the power supply terminal is a power supply device that supplies power from a general power source or solar energy.

9. The immobilized photobioreactor of claim 1, wherein the program is controlled by a central control unit, and the central control unit stores at least one set of photoperiod and spectrum parameters for different microalgae varieties and culture stages.

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