A microalgae culture device and method capable of controlling biological concentration

A technology of microalgae cultivation and concentration, applied in biochemical cleaning devices, biochemical equipment and methods, enzymology/microbiology devices, etc., can solve problems such as increasing production costs, and achieve the effects of improving productivity and optimizing light distribution

Active Publication Date: 2021-03-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Chinese Patent Publication No. CN106701532A invented a LED microalgae combination culture device, so that all directions of the microalgae culture vessel can receive the irradiation of LED light with different wavelengths uniformly, creating efficient and high-quality culture conditions, and this method causes additional energy consumption. Cost of production

Method used

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  • A microalgae culture device and method capable of controlling biological concentration
  • A microalgae culture device and method capable of controlling biological concentration
  • A microalgae culture device and method capable of controlling biological concentration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The inoculation amount of Spirulina is 0.0952g L -1 , the concentration reaches 2.245g L -1 Start harvesting when the pump flow rate is 0.10mLmin -1 , after 12 days of cultivation, the total yield of Spirulina reached 4.164g L -1 , Compared with the batch culture without front harvest, the productivity is increased by 19.8%.

Embodiment 2

[0028] The inoculation amount of Spirulina is 0.0952g L -1 , the concentration reaches 2.245g L -1 Start to harvest when the pump flow rate is 0.15mLmin -1 , after 12 days of cultivation, the total yield of Spirulina reached 4.397g L -1 , Compared with the batch culture without front harvest, the productivity is increased by 26.5%.

Embodiment 3

[0030] The inoculation amount of Spirulina is 0.0952g L -1 , the concentration reaches 2.245g L -1 Start harvesting when the pump flow rate is 0.25mLmin -1 , after 12 days of cultivation, the total yield of Spirulina reached 4.604g L -1 , Compared with the batch culture without front harvest, the productivity is increased by 32.4%.

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Abstract

A microalgae cultivation device and method capable of controlling biological concentration, relating to microalgae cultivation. Utilizing the characteristics of some microalgae, such as spirulina, carpet algae, and attenuator algae, which float and gather when standing still, and distribute evenly when ventilating, the reactor is designed into two parts: the growth zone and the static zone, and the microalgae in the growth zone pass through the descending liquid The overflow of the pipe is collected continuously to the static area, while the same volume of culture medium containing unused nutrients passes through the liquid delivery device (pump), the suction pipe, and the liquid discharge pipe to flow back into the growth area for further use. Within a certain range, the purpose of controlling the biological concentration in the growth area and optimizing the light distribution is achieved by controlling the reasonable amount of harvested microalgae, realizing the organic combination of efficient cultivation of microalgae and continuous harvesting, and improving the productivity of microalgae.

Description

technical field [0001] The invention relates to microalgae cultivation, in particular to a microalgae cultivation device and method capable of controlling biological concentration. Background technique [0002] As a renewable energy that can replace chemical energy and reduce carbon dioxide emissions, microalgae is considered a very promising way of biological carbon sequestration. During the batch culture of microalgae, the biomass continues to accumulate, and the light transmittance decreases exponentially. The microalgae that are far away from the incident light do not have enough light for photosynthesis, resulting in a decline in productivity. Common solutions include optimizing light source distribution and reducing bioconcentration. For example, the Chinese Patent Publication No. CN106701532A invented the LED microalgae combination culture device, so that all directions of the microalgae culture vessel can uniformly receive the irradiation of LED lights with differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/04C12M1/00C12N1/12C12N1/20
CPCC12M21/02C12M23/20C12M23/34C12M23/38C12M23/48C12M29/06C12M29/18C12M31/02C12N1/12C12N1/20
Inventor 贾立山刘欢李森
Owner XIAMEN UNIV
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