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Tubular photobioreactor and system and method for culturing microalgae cells

A technology of photobioreactor and microalgae cells is applied in the field of systems for cultivating microalgae cells, which can solve the problems of complex structure, difficulty in ensuring the illumination of microalgae cells, and high manufacturing cost, so as to improve the yield, improve the utilization rate of light energy, simple structure

Active Publication Date: 2011-07-27
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of device equipped with hollow baffles can play the role of mixing culture fluid, it has a complex structure and high manufacturing cost, and the mixing of microalgae cells is disorderly mixing, so it is difficult to ensure that microalgae cells receive light of a specific frequency

Method used

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  • Tubular photobioreactor and system and method for culturing microalgae cells
  • Tubular photobioreactor and system and method for culturing microalgae cells
  • Tubular photobioreactor and system and method for culturing microalgae cells

Examples

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Effect test

Embodiment 1

[0038] Spirulina was cultivated outdoors under natural light. Build a culture system in parallel tubular photobioreactors, such as image 3 As shown, the tube-type photobioreactor used is placed horizontally, and the manufacturing material is a glass circular tube with an inner diameter of 50 mm and a length of 10 m. Every 10 circular tubes 4 are arranged side by side, one end is connected with the main pipe 6 of the culture solution inlet, and the other end is connected with the main pipe 7 of the culture solution outlet, forming a group. Put the spiral baffle made of polyethylene material in advance into the tubular photobioreactor, the pitch of the spiral baffle is 50mm, the width is 10mm, and the thickness is 2mm. The helical baffle runs the entire length of the pipe, except for the parts where the connecting pipe fittings are to be installed at both ends of the pipe.

[0039] Such as Figure 5 As shown, the system for cultivating microalgae cells includes 2 groups of t...

Embodiment 2

[0049] Spirulina was cultivated under natural light. Other conditions are the same as in Example 1, except that the width of the built-in spiral baffle is 5 mm.

[0050] The culture process lasted for 30 days, and the volumetric productivity of Spirulina was about 2.0g / L.d. It is higher than the volumetric yield (1.1g / L.d) under the same culture conditions in the tubular photobioreactor without spiral baffles, indicating that the light energy utilization rate of the microalgae cells is significantly improved.

Embodiment 3

[0052] Spirulina was cultivated under natural light. Other conditions are the same as in Example 1, except that the width of the built-in spiral baffle is 15 mm.

[0053] The culture process lasted for 30 days, and the volumetric productivity of Spirulina was about 2.4g / L.d. It is higher than the volumetric yield (1.1g / L.d) under the same culture conditions in the tubular photobioreactor without spiral baffles, indicating that the light energy utilization rate of the microalgae cells is significantly improved.

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Abstract

The invention relates to a tubular photobioreactor which comprises a spiral baffle plate, wherein the spiral baffle plate is arranged in a pipeline of the tubular photobioreactor. The invention also provides a system for culturing microalgae cells, which comprises at least one tubular photobioreactor, a fluid transport device, a gas-liquid switching device and a heat exchanging device, wherein the gas-liquid switching device is used for gas supply and oxygen analysis. The invention also provides a method for culturing microalgae cells, which comprises the following steps: culturing microalgae cells in the system for culturing microalgae cells; and passing the culture solution through the tubular photobioreactor at a speed of 10-100cm / s. The tubular photobioreactor provided by the invention can give a full play to the flash effect of microalgae cells, improve the light energy utilization ratio of microalgae in large-scale culture and increase the yield. In addition, the tubular photobioreactor provided by the invention has a simple structure, and can be conveniently manufactured in batches.

Description

technical field [0001] The invention relates to a tubular photobioreactor, and a system and method for cultivating microalgae cells comprising the tubular photobioreactor. Background technique [0002] Microalgae cells are rich in amino acids, proteins, vitamins, unsaturated fatty acids and other high value-added biological substances, and have become an important source of materials in the fields of human food, medicine, dyes, and fine chemicals. At present, with the depletion of fossil energy such as petroleum and coal, people have paid great attention to biorefinery based on biomass. As an important renewable energy source, microalgae can provide a large amount of biomass (oil, starch, cellulose) , has broad application prospects in the field of biorefinery. [0003] The core of the large-scale cultivation of microalgae is the photobioreactor. At present, there are two main methods: open cultivation and closed cultivation. Open culture is the earliest developed and most...

Claims

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Application Information

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IPC IPC(8): C12M1/24C12M1/02C12N1/12C12R1/89
CPCC12M23/06C12M21/02C12M27/20C12M29/20
Inventor 丛威张庆华薛升长颜飞
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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