A kind of immobilized cultivation method of microalgae

Abstract

The invention relates to the field of microalgae cultivation, in particular to a method for immobilized cultivation of microalgae. The method can reduce the bubbling phenomenon in the immobilized culture process, and improve the immobilized culture output of microalgae. It overcomes that in the prior art, in the immobilized cultivation process, the dissolved gas concentration in the microalgae culture solution is relatively large or the gas release is relatively large, so that between the substrate and the infusion layer, between the infusion layer and the carrier, and between the carrier and the carrier Bubbles are prone to occur between the microalgae cell layers, resulting in poor supply of microalgae culture solution and low yield of immobilized culture of microalgae. An embodiment of the present invention provides a microalgae immobilized culture method, using the pretreated microalgae culture fluid to immobilize the microalgae culture, wherein the amount of gas dissolved in the pretreated microalgae culture fluid relative to the pretreatment Reduced or reduced gas release.

Description

technical field [0001] The invention relates to the field of microalgae cultivation, in particular to a method for immobilized cultivation of microalgae. Background technique [0002] Microalgae cells contain a variety of high-value nutrients and chemical raw materials. Cell metabolism produces polysaccharides, oils, proteins, pigments, etc., which are widely used in the pharmaceutical industry, food industry, environmental testing and purification, biotechnology and renewable energy manufacturing Therefore, how to improve the large-scale cultivation of microalgae has become the focus of research in various fields. [0003] At present, the culture of microalgae is mainly realized by open pond or reactor system, mainly for free culture. This method is not conducive to the large-scale culture of microalgae. It consumes a lot of water and energy, which has become a constraint to obtain high-yield microalgae. Factors, immobilized culture technology is an emerging culture techno...

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Problems solved by technology

[0004] However, the microalgae culture solution produces oxygen due to the photosynthesis of the microalgae in the immobilized cultivation device, and the microalgae culture solution is in contact with the air so that the gas is easily dissolved in the microalgae culture solution, so that the microalgae culture solution The dissolved gas concentration in the medium is relatively large. When the microalgae culture solution is supplied to the immobilized culture layer, there will be a gap between the infusion layer and the substrate, between the infusion layer and the carrier, and between the carrier and the microalgal cell layer. Bubbling occurs due to the presence of a large amount of gas, which makes the algae cells separate from the carrier, and the supply of the culture solution is not smooth, which affects the immobilized culture of microalgae.

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