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Closed photo bioreactor for enhancing light energy utilization rate of microalgae mass culture

A photobioreactor and closed technology, applied in the biological field, can solve the problems of difficulty in ensuring algae cell illumination, disordered mixing of algae cells, and high manufacturing costs, and achieve the goal of improving light energy utilization, expanding production scale, and increasing production. Effect

Active Publication Date: 2010-12-01
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 complicated structure and high manufacturing cost, and the mixing of algae cells is disorderly mixing, so it is difficult to ensure that the algae cells are subjected to a specific period of light.

Method used

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  • Closed photo bioreactor for enhancing light energy utilization rate of microalgae mass culture
  • Closed photo bioreactor for enhancing light energy utilization rate of microalgae mass culture
  • Closed photo bioreactor for enhancing light energy utilization rate of microalgae mass culture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Spirulina was cultivated outdoors under natural light. The plate-type photobioreactor of the constructed culture system is placed horizontally, and the manufacturing material is a plexiglass plate, the thickness of the upper and lower panels is 2mm, the thickness of the end panel 4 and the rib plate 5 are both 2mm, and the length of the rib plate 5 is 80cm. The size of the plate-type photobioreactor is: 1m in length, 1.022m in width, and 2cm between the inner surfaces of the upper and lower panels. Adhere to the inner side of the upper panel and paste a baffle 3 with a rectangular cross-section made of plexiglass plate material, the direction of the baffle is perpendicular to the flow channel, the distance between the baffles is 8mm, the height of the baffle is 3mm, and the thickness of the baffle is 2mm. The length of the baffles is 10 cm (equal to the width of the flow channel), and 90 baffles are installed in each flow channel (the area between the baffles covers abo...

Embodiment 2

[0061] Spirulina was cultivated under natural light. Other conditions were the same as in Example 1, except that the height of the rectangular baffle inside the upper panel of the plate-type photobioreactor was 1 mm, and the distance between the rectangular baffles was 5 mm.

[0062] The cultivation process lasted for 30 days, and the area yield of Spirulina was about 33g / m 2 .d, higher than the area productivity (24g / m2) of comparative example 1 under the same culture condition in the plate photobioreactor without baffle 2 .d), indicating that the light energy utilization rate of the algae cells is significantly improved.

Embodiment 3

[0064] Spirulina was cultivated under natural light. Other conditions were the same as in Example 1, except that the height of the rectangular baffle inside the upper panel of the plate-type photobioreactor was 8 mm, and the distance between the rectangular baffles was 42 mm.

[0065] The cultivation process lasted for 30 days, and the area yield of Spirulina was about 36g / m 2 .d, higher than the area productivity (24g / m2) of comparative example 1 under the same culture condition in the plate photobioreactor without baffle 2 .d), indicating that the light energy utilization rate of the algae cells is significantly improved.

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Abstract

The invention belongs to the biotechnological field and relates to a closed photo bioreactor for enhancing the light energy utilization rate of microalgae mass culture. At least two baffles vertical to the flowing direction of a culture solution are arranged on the inner wall surface of an illumination surface of the closed photo bioreactor, and a region between the baffles also covers a part of or all the region of an effective illumination surface between a culture solution inlet and a culture solution outlet of the photo bioreactor; the length of each baffle in a platy photo bioreactor is 30-100 percent of the width of a culture solution flow passage in the platy photo bioreactor; the length of each baffle in a round tube type photo bioreactor or an elliptical tube type photo bioreactor is 30-100 percent of the cross section arc length of an illumination surface of the culture solution flow passage. The closed photo bioreactor can efficiently enhance the light energy utilization rate of microalgae cell mass culture and improve the yield of microalgae cells, is suitable for culturing various microalgae in a large scale and produces relative products.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a closed photobioreactor with a special internal structure. The closed photobioreactor can effectively improve the light energy utilization rate of microalgae cell scale cultivation and increase the output of microalgae cells . The closed photobioreactor with this structure is suitable for large-scale cultivation of various microalgae and production of related products. Background technique [0002] Human beings have used microalgae for hundreds of years, and the research and development of microalgae has become more and more in-depth. Microalgae has 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 (oi...

Claims

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Application Information

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IPC IPC(8): C12M1/18C12R1/89
CPCC12M21/02C12M23/58C12M23/20C12M23/04
Inventor 丛威苏贞峰薛升长杨成砚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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