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

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] Cultivate spirulina under natural outdoor light. Construct a culture system with parallel tube photobioreactors, such as image 3 As shown, the tube-type photobioreactor used is placed horizontally, and the manufacturing material is a glass round tube with an inner diameter of 50mm and a length of 10m. Every ten round pipes 4 are arranged side by side, one end is connected with the culture solution inlet main pipe 6, and the other end is connected with the culture solution outlet main pipe 7, forming a group. The spiral baffle made in advance with polyethylene material is placed in the tubular photobioreactor, the spiral baffle has a pitch of 50 mm, a width of 10 mm, and a thickness of 2 mm. The spiral baffle covers the entire length of the round pipe except for the parts where the pipe fittings are installed at both ends of the round pipe.

[0039] Such as Figure 5 As shown, the system for culturing microalgae cells includes two sets of the above-ment...

Example Embodiment

[0048] Example 2

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

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

Example Embodiment

[0051] Example 3

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

[0053] The cultivation process lasted for 30 days, and the volume yield of spirulina was about 2.4g / L.d. It is higher than the volume yield (1.1g / L.d) in the tube photobioreactor without spiral baffle under the same culture conditions, indicating that the light energy utilization rate of 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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