JP3006117B2 - CO2 fixation device using photosynthetic organisms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a C
It relates to an O ₂ fixing device.

[0002]

2. Description of the Related Art This kind of technique is disclosed, for example, in Japanese Patent Application Laid-Open No. 48-58185. To briefly explain this conventional technique, a structure is adopted in which a ventilation pipe is passed through a culture tank and outside air containing CO ₂ is fed into the culture solution. When the culture is completed, the photosynthetic organism is collected together with the culture solution, and the photosynthetic organism is collected by mechanical means such as centrifugation.

[0003]

However, in such a conventional CO ₂ fixing device, a culture solution is taken out at predetermined time intervals and photosynthetic organisms are collected, so that it takes time and effort to select only photosynthetic organisms. There was a problem that costs were high.

[0004] It is an object of the present invention to provide a CO ₂ fixing device that can easily recover photosynthetic organisms based on the above-mentioned conventional technology.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a closed culture tank, a photosynthetic organism absorbing port formed in the closed culture tank, and a CO 2 formed of a gas-permeable material and formed in the photosynthetic organism absorbing port. ₂ release member and, CO ₂ which is connected to the CO ₂ release member
A supply means, a photosynthetic biotransport member connected to the photosynthetic bioabsorption port provided in proximity to the CO ₂ releasing member and formed outside the culture tank, and a photosynthetic bioabsorption connected to the photosynthetic biotransport member It is a CO ₂ fixing device using photosynthetic organisms composed of means.

[0006]

In the vicinity of the CO ₂ emitting member, photosynthetic organisms proliferate and the number of photosynthetic organisms increases, and the distance between the CO ₂ emitting member and the photosynthetic organism absorbing port is short. Therefore, the number of photosynthetic organisms absorbed from the photosynthetic organism absorption port increases.

In the configuration of the present invention, since the culture solution having a large number of photosynthetic organisms can be absorbed, it is not necessary to extract all the culture solution in the culture tank, and the culture solution can be left in the culture tank. it can. The remaining culture solution contains a growth promoting substance released from the photosynthetic organism, and can be used for the next culture of the photosynthetic organism, so that the growth of the photosynthetic organism is promoted and, consequently, the fixation of CO ₂ is promoted.
As described above, the growth promoting substance released from the photosynthetic organism can be used for the next culture, and CO ₂ fixation can be promoted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the basic aspects of the present invention will be described. In general, since CO ₂ does not melt into the culture medium much, if the culture is performed while irradiating light, the photosynthetic organism becomes CO ₂ deficient rather than light. When CO ₂ is supplied into the culture solution using a CO ₂ releasing member made of a gas permeable material,
Using this CO ₂ releasing member as a holding carrier, photosynthetic organisms start to proliferate on and near the surface. As described above, the CO ₂ releasing member made of a gas-permeable material serves as a carrier for photosynthetic organisms, and functions to increase the number of photosynthetic organisms in the vicinity.

The distance between the photosynthetic organism absorption port and the photosynthetic organism
The closer, the easier it is to absorb photosynthetic organisms
But CO_TwoThe release member is formed at the photosynthetic organism absorption port
Therefore, these distances become shorter. So photosynthetic bioabsorption
When the means is activated, CO _TwoHeld by the release member
Photosynthetic organisms easily absorb photosynthetic organisms even with weak suction
Absorbed from the part. Thus, CO_TwoThe emission member is
The distance between the adult absorption port and the part with a high population of photosynthetic organisms
And absorb the culture solution of the part with a large population of photosynthetic organisms
Work to make it easier.

Next, a specific embodiment of the present invention will be described. FIG. 1 is a configuration diagram showing one embodiment of the present invention. In the center of the inside of the glass-made cylindrical closed culture tank 1, a trumpet-shaped photosynthetic organism absorbing port 2 is provided. From the side of the photosynthetic organism absorption port 2, a hollow L-shaped support 3
And 4 are respectively connected at one end. The other ends of the supports 3 and 4 are respectively connected to one end and the other end of a CO ₂ emitting member 5 having a helical three-dimensional structure. The CO ₂ emitting member 5 is formed of a gas permeable material such as a silicon tube. One end of the support 3 is further connected to one end of a silicon tube 6, and the other end of the silicon tube 6 is connected to an air pump 7 serving as CO ₂ supply means. The photosynthetic organism absorption port 2 is connected to one end of a metal pipe 8 that is rolled at a right angle. This metal pipe 8 works as a means of transporting photosynthetic organisms. The other end of the metal pipe 8 is the closed culture tank 1
And connected to a submersible pump 9 serving as a photosynthetic organism absorbing means.

A method for recovering photosynthetic organisms using this CO ₂ fixing device will be described. While running the air pump 7, when cultured chlorella, high CO ₂ concentration CO ₂ release member 5
Chlorella grows near the surface. When the chlorella reaches a predetermined amount, the submersible pump 9 is operated to suck the chlorella together with the culture solution. At this time, many chlorellas are C
Most of the chlorella is collected without absorbing all of the culture solution even with a weak suction force, because it is present around the O ₂ emitting member 5 and the distance between the CO ₂ emitting member 5 and the photosynthetic organism absorbing port 2 is short. it can. Further, since the chlorella can be absorbed even by a weak suction force, the CO ₂ emission member 5 is not damaged by the suction force.

FIG. 2 is a block diagram of another embodiment of the present invention. This embodiment is almost the same as the embodiment shown in FIG. 1, but differs in the following two points. The closed culture tank 10 is made of plastic and has a spherical shape.
As described above, the culture tank may take any form as long as it is a closed type. The CO ₂ emission member 10 has a so-called multi-helix three-dimensional structure in which the helix further forms a helix.
Although the shape of the CO ₂ emitting member is arbitrary, a three-dimensional structure having a helical structure in a part thereof may be used in order to increase the space for holding the photosynthetic organism.

In these embodiments, a silicon tube is used as the CO ₂ releasing member, but this may be freely changed as long as it is a breathable material. Further, in these embodiments, the number of the CO ₂ emitting member and the number of the photosynthetic organism absorbing port are one, but these numbers may be freely changed. Furthermore, in the embodiment of FIG. 1, chlorella was used as a photosynthetic organism, but this can also be used because other algae could achieve the same effect.

[0014]

As described above, the number of photosynthetic organisms increases in the culture tank in the apparatus of the present invention, and the distance between the CO ₂ releasing member and the photosynthetic organism absorption port is short. The number of photosynthetic organisms absorbed from the plant increases, and a culture medium with such a large number of photosynthetic organisms can be absorbed, so that all the culture medium in the culture tank does not need to be extracted, and the culture medium remains in the culture tank. Can be left. Therefore, the growth of the photosynthetic organism is promoted in the culture solution, and the photosynthetic organism can be used effectively.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a CO ₂ fixing device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a CO ₂ fixing device according to another embodiment of the present invention.

[Explanation of symbols]

1 sealed culture vessel 2 photosynthetic organism absorbing opening 5 CO ₂ emission member 7 air pump 8 metal pipe 9 submersible pump

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Atsushi Nishino 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-48-58185 (JP, A) (58) Survey Field (Int. Cl. ⁷ , DB name) B01J 19/00 C01B 31/20

Claims (2)

(57) [Claims] 1. A culture vessel filled with a photosynthetic organism and a culture solution, an absorption port for absorbing the photosynthetic organism that has absorbed CO ₂ in the culture vessel, and an air-permeable material that is close to the absorption port. and CO ₂ release means formed Te, the CO ₂
CO ₂ that supplies CO ₂ into the culture via release means
CO ₂ fixation using a photosynthetic organism composed of a supply means, a photosynthetic organism transport means connected to the absorption port and formed outside the culture tank, and a photosynthetic organism absorption means connected to the transport means apparatus. 2. The CO ₂ fixing apparatus using photosynthetic organisms according to claim 1, wherein at least a part of the CO ₂ emitting means has a helical three-dimensional structure.