Microalgae cultivation system, cavity type photobioreactor and microalgae cultivation method

A technology for photobioreactor and microalgae cultivation, which is applied in the field of microalgae biology, can solve the problems of increased operating costs, slow growth of microalgae, and low efficiency, and achieve the effect of reducing production energy consumption and cost, and increasing stability

Active Publication Date: 2018-03-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the bubbling of a large number of reactors requires very complicated compressed gas piping, which greatly increases the manufacturing cost of each reactor and the construction cost of the compressed gas piping, and at the same time greatly increases the operating cost
However, erecting such a complex ventilation pipeline on the surface of a large area of ​​water is more difficult to construct, more costly to manufacture and operate, and has a high risk of being damaged by waves, so it is very difficult to achieve in large-scale production
And if you consider using an open reactor system, although the bubbling ventilation system is omitted, and it is conducive to the transfer of carbon dioxide from the air to the culture solution, so as to be absorbed by microalgae, but the temperature of the open system is different from that of the water due to evaporation. The original temperature is almost the same, and the greenhouse effect cannot be formed, so the growth of microalgae is slow and the efficiency is too low

Method used

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  • Microalgae cultivation system, cavity type photobioreactor and microalgae cultivation method
  • Microalgae cultivation system, cavity type photobioreactor and microalgae cultivation method
  • Microalgae cultivation system, cavity type photobioreactor and microalgae cultivation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Embodiment 1 cavity type photobioreactor

[0089] like figure 1 , figure 2 As shown, the reactor includes a chamber body 1, the chamber wall 2 of the chamber body 1 is a sealed body with a hollow sandwich structure 3, and an air filling port 4 is provided on the outer layer of the hollow sandwich structure 3. The chamber wall 2 consists of the chamber body 1 consisting of an upper chamber wall 21 , a lower chamber wall 22 and a side chamber wall 23 .

[0090] The upper part of the cavity 1 is respectively provided with a material inlet and outlet 5 and a vent 6 , both of which pass through the cavity wall 2 and communicate with the inside of the cavity 1 . When in use, materials for cultivation, such as microalgae and microalgae culture fluid, are put in through the inlet and outlet 5, and during the cultivation process of the microalgae, samples are also taken through the inlet and outlet to observe the growth of the microalgae. Both the material inlet and outlet 5...

Embodiment 2

[0093] Embodiment 2 Rigid cavity type photobioreactor

[0094] like image 3 , Figure 4 As shown, the reactor includes a cavity body 1 , and the cavity wall 2 of the cavity body 1 is formed by bonding the cavity body 1 with an upper cavity wall 21 , a lower cavity wall 22 and a side cavity wall 23 . Both the side chamber wall 23 and the lower chamber wall 22 are sealed bodies with a hollow sandwich structure 3 . The upper part of the cavity 1 is respectively provided with a material inlet and outlet 5 and a vent 6 , both of which pass through the cavity wall 2 and communicate with the inside of the cavity 1 .

[0095] When in use, materials for cultivation, such as microalgae and microalgae culture fluid, are put in through the inlet and outlet 5, and during the cultivation process of the microalgae, samples are also taken through the inlet and outlet to observe the growth of the microalgae. Both the material inlet and outlet 5 and the air vent 6 are provided with an air-p...

Embodiment 3

[0097] Embodiment 3 Flexible cavity type photobioreactor

[0098] like Figure 5 , Figure 6 As shown, the reactor includes a cavity 1 , and the cavity wall 2 of the cavity 1 is composed of an upper cavity wall 21 , a lower cavity wall 22 and a side cavity wall 23 . The chamber wall 2 is a highly transparent polyvinyl chloride (PVC) film.

[0099] The side cavity wall 23 is a sealing body with a hollow interlayer structure 3. In the vertical direction, it is composed of three hollow sealing units I24. The hollow sealing units I24 are sealed and stacked. Each hollow sealing unit I is equipped with a And the inflation port 4 of deflation.

[0100] The upper cavity wall 21 is a sealing body with a hollow interlayer structure 3, and is composed of several hollow sealing units II 25 in the horizontal direction, and the hollow sealing units II 25 are sealed and connected. The upper part of the cavity 1 is respectively provided with a material inlet and outlet 5 and a vent 6 , bo...

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Abstract

The invention discloses a microalgae culture system, a cavity type photobioreactor and a microalgae culture method. The culture system comprises the photobioreactor capable of containing a culture solution and microalgae. The photobioreactor is in a closed type. The wall of the photobioreactor is a sealed body with a hollow sandwich structure, and / or the wall of the photobioreactor is made of a light heat insulation material. The photobioreactor is provided with a ventilation structure. The culture solution contains bicarbonate. By adopting the system for culturing the microalgae, heat exchange between the photobioreactor and a water environment where the photobioreactor is located can be well controlled, the culture temperature in the photobioreactor can be kept higher than the temperature of the water where the photobioreactor is located so as to increase the growth speed of the microalgae, but the situation that the culture temperature is too high and leads to death of the cultured microalgae will not occur. The culture method is simple, low in cost, high in culture efficiency and suitable for industrial application.

Description

technical field [0001] The invention relates to the field of microalgae biotechnology, in particular to a microalgae cultivation system, a cavity type photobioreactor and a microalgae cultivation method. Background technique [0002] In recent years, autotrophic microalgae have received more and more attention due to their functional diversity. Microalgae can be used as a new type of biodiesel feedstock. Compared with energy crops such as soybean, sugarcane, maple tree, etc., it has the advantages of short growth cycle, fast photosynthesis rate, high oil content, etc., and has a good development prospect. Microalgae efficiently fix atmospheric CO 2 , to solve environmental problems caused by the burning of fossil fuels. In addition, microalgae cells contain high-value nutrients such as protein, lipids, polysaccharides, carotenoids, and pigments. They are high-quality food and feed materials, and are also widely used organic intermediates in chemical, light and pharmaceuti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12N1/12
CPCC12M21/02C12M23/20C12M23/24C12M23/56C12M29/04C12M29/22C12M37/04C12M41/12C12N1/12
Inventor 迟占有朱陈霸朱贺李佳琪程龙燕唐颖
Owner DALIAN UNIV OF TECH
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