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Method for high-efficiency culture of microalgae

A micro-algae, high-efficiency technology, applied in the field of effective utilization of CO2 while realizing oxygen analysis, can solve the problems of large investment, cumbersome supply and oxygen analysis process, etc., and achieve the effects of simplifying the process flow, avoiding microbial pollution, and high outlet pressure

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0018] According to the above analysis, in order to overcome the current CO 2 Unfavorable factors such as cumbersome replenishment and oxygen analysis process and excessive investment

Method used

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  • Method for high-efficiency culture of microalgae
  • Method for high-efficiency culture of microalgae
  • Method for high-efficiency culture of microalgae

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Embodiment Construction

[0032] In the method of the present invention, in the air-lift bioreactor of microalgae cultivation, the feed gas used is the tail gas in the anaerobic fermentation of Dr. Kray's Klebsiella pneumoniae to produce 1,3-propanediol, which contains N 2 and CO 2 . 99% of the initial feed of N 2 , the bacteria are fermented under anaerobic conditions, producing a large amount of CO 2 gas, carried out to form N 2 and CO 2 Mixed gas, the mixed gas composition is more than 90% N 2 , CO 2 The content is about 10%.

[0033] The tail gas used in the present invention to provide carbon sources for microalgae cultivation also includes tail gas in other biological fermentation processes, such as aerobic fermentation processes such as yeast fermentation. This exhaust contains CO 2 The amount is similar to the above-mentioned exhaust gas, but it contains a large amount of oxygen, and it first passes through the deoxygenation equipment to obtain a lower oxygen partial pressure CO 2 Suffic...

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Abstract

The invention discloses a method for high-efficiency culture of microalgae, which comprises the following contents: introducing a gas containing CO2 into an illumination airlift bioreactor which contains microalgae and a microalga culture medium to realize airlift, supplying CO2 and resolving O2, wherein the gas containing CO2 is from tail gas of microorganism fermentation, and the tail gas is introduced into the illumination airlift bioreactor after passing through a conveying pretreatment device. Compared with the prior art, the method disclosed by the invention has the advantages of improving the fat accumulation capacity of the microalgae in a microalga culture process, improving utilization rate of CO2, improving O2 resolution capacity, simplifying the culture device and the like.

Description

technical field [0001] The invention belongs to the field of microalgae biotechnology, and relates to an effective use of CO in the process of cultivating microalgae in a photobioreactor 2 Simultaneously realize the method of oxygen desorption. Background technique [0002] Microalgae are rich in protein, polysaccharides, unsaturated fatty acids and other nutrients (such as spirulina), which can be used in food, medicine and energy; they can accumulate fatty acids in large quantities, and the fatty acid content of some microalgae can account for 30% to 60% of dry weight. The use of microalgae to accumulate oil resources has become the most popular research field in the development of renewable resources using solar energy. Not only has strong market potential, but also has extraordinary social value. [0003] There are two types of microalgae cultivation methods: closed type and open type. The open type is similar to wild stocking. The open pool cultivation device is used,...

Claims

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Application Information

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IPC IPC(8): C12N1/12C12R1/89
Inventor 王领民金平师文静李晓姝王崇辉
Owner CHINA PETROLEUM & CHEM CORP
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