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Microalgae cycling breeding technology

A technology of circular culture and microalgae, applied in the direction of single-cell algae, etc., can solve the problem of difficult ammonia recovery and achieve the effect of efficient deamination

Inactive Publication Date: 2015-11-04
TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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Problems solved by technology

It can solve the problem of difficult ammonia recovery after ammonia flocculation of microalgae, and connect subsequent cultivation and ammonia flocculation harvesting into an integrated system, which greatly improves the industrial feasibility of ammonia flocculation process

Method used

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0037] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0038] The present invention provides a kind of microalgae circulation cultivation technique, comprises the following steps:

[0039] Step 1, adding ammonia to the culture solution with microalgae, using ammonia to flocculate the microalgae; then enter step 2,

[0040] Step 2: Separating the microalgae flocculation from the culture solution to obtain the culture supernatant, and then adding PO to the culture supernatant 4 3－ and Mg 2+ , so that the NH in the culture supernatant 4 + with PO 4 3－ and Mg 2+ react to form NH 4 MGPO 4 ·6H 2 O precipitation; enter step 3 aft...

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Abstract

The invention discloses a microalgae cycling breeding technology. The technology comprises the steps of 1, adding ammonia to a culture solution where microalgae are cultured, so that flocculation of the microalgae is achieved by means of the ammonia; 2, separating microalgae floccules from the culture solution to obtain culture liquor, and then adding PO43- and Mg2+ to the culture liquor to enable NH4+ in the culture liquor to react with PO43- and Mg2+ to generate NH4MgPO4.6H2O sediment; 3, separating the NH4MgPO4.6H2O sediment from the culture liquor to obtain treating liquor, adding certain constituents to the treating liquor to form a new culture solution, and conducting cycling culture of the microalgae by means of the new culture solution; 4, repeating the steps 1, 2 and 3 in sequence to achieve cycling breeding of the microalgae. By the adoption of the method, cost is low, efficiency is high, and environment friendliness is realized. The technology is suitable for large-scale breeding of microalgae and harvesting of microalgae biomass.

Description

technical field [0001] The invention relates to a process for producing microalgae biomass, in particular to a microalgae circulation culture process. Background technique [0002] With the depletion of non-renewable fossil energy and increasingly severe environmental problems, the world is facing global problems such as energy crisis, climate warming, food shortage, land shortage, and environmental pollution. Therefore, more and more natural science research focuses on the development and utilization of new energy sources, environmental bioremediation, and the development and utilization of recyclable materials. In the development and utilization of new energy and the bioremediation of the environment, microalgae have become a research hotspot because of some unique characteristics. These characteristics include: (1) Microalgae are widely distributed in oceans, lakes, tidal flats and other waters, and there are various types. Microalgae directly use sunlight, carbon dioxi...

Claims

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Application Information

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IPC IPC(8): C12N1/12
Inventor 刘晨风陈方见陈树林侯余勇刘智永赵玥
Owner TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
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