Treatment method of microalgae

A treatment method, microalgae technology, applied in the direction of microbial dissolution, etc., can solve the problems of needing to add protective agents, high operating pressure, etc., and achieve the effect of low operating pressure and temperature, not easy to destroy, and high wall breaking efficiency

Active Publication Date: 2012-06-20
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages of high operating pressure, the need to add protective agents, and low-temperature pretreatment before breaking the wall.

Method used

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  • Treatment method of microalgae
  • Treatment method of microalgae
  • Treatment method of microalgae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Get water content and be 88.6% chlorella (chlorella) (prototheca oil content rate is 29.145% (dry basis)) algae liquid 400ml, then in chlorella algae liquid, drop acetic acid, adjust Ph value to be 5. Add the adjusted algae liquid into the high-pressure tank, then add high-pressure nitrogen into the high-pressure tank, so that the pressure in the high-pressure tank is maintained at 8MPa. Heat the high-pressure tank to 80°C, while the pressure rises to 10MPa, and maintain this condition for 2h. Then the material is discharged into the normal temperature and pressure tank, and the broken microalgae and algae oil remain in the normal pressure tank, and at the same time, a large amount of water is carried out of the normal pressure tank by nitrogen to achieve the effect of drying part of the microalgae. Then, the algae oil extraction rate was tested for the product collected in the vacuum tank, and the algae oil extraction rate was 86.8% after the wall was broken.

Embodiment 2

[0031] Get water content and be 88.6% different oxygen chlorella (chlorella vulga) (prototheca oil content rate is 29.145% (dry basis)) algae liquid 400ml, then drop sodium hydroxide solution in the chlorella algae liquid, adjust Ph The value is 9. Add the adjusted algae liquid into the high-pressure tank, then add high-pressure nitrogen into the high-pressure tank, so that the pressure in the high-pressure tank is maintained at 12MPa. Heat the high-pressure tank to 120°C while increasing the pressure to 15MPa, and maintain this condition for 10 minutes. Then the material is discharged into the normal temperature and pressure tank, and the broken microalgae and algae oil remain in the normal pressure tank, and at the same time, a large amount of water is carried out of the normal pressure tank by nitrogen to achieve the effect of drying part of the microalgae. Then, the algae oil extraction rate was tested for the product collected in the vacuum tank, and the algae oil extrac...

Embodiment 3

[0033]Get 400ml of chlorella vulga (chlorella vulga) (Prototheca oil content rate 29.145% (dry basis)) algae liquid that water content is 99.7%, add sulfuric acid dropwise in chlorella algae liquid then, adjust Ph value to be 6 . Add the adjusted algae liquid into the high-pressure tank, then add high-pressure nitrogen into the high-pressure tank, so that the pressure in the high-pressure tank is maintained at 12MPa. The high-pressure tank was heated to 110°C, and the pressure was raised to 14.5MPa at the same time, and maintained under this condition for 1h. Then the material is discharged into the normal temperature and pressure tank, and the broken microalgae and algae oil remain in the normal pressure tank, and at the same time, a large amount of water is carried out of the normal pressure tank by nitrogen to achieve the effect of drying part of the microalgae. Then, the algae oil extraction rate was tested for the product collected in the vacuum tank, and the algae oil e...

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Abstract

The invention provides a treatment method of microalgae. The method comprises the following steps: regulating the pH value of microalgae solution; introducing gas to pressurize the microalgae solution subjected to pH value regulation; heating the pressurized microalgae; keeping the pressuring and heating state; and enabling the pressurized and heated microalgae solution to enter a normal-temperature normal-pressure environment and collide with a porous baffle which is arranged in the normal-temperature normal-pressure environment. The method provided by the invention has the advantages that the process flow is simple, the energy consumption is low, the wall breaking, drying and collection of the microalgae can be completed in one step, the moisture in the microalgae solution is reduced by 50%, the operation pressure and temperature are not high, the grease active component is not easily destroyed, the algae oil extraction rate is up to 95% optimally.

Description

technical field [0001] The invention relates to the field of microalgae processing, in particular to a treatment method for microalgae. Background technique [0002] Microalgae are a class of individual tiny photoautotrophic and / or heterotrophic single-celled organisms, which have the characteristics of wide distribution, various species, high photosynthetic efficiency, fast growth rate, and strong adaptability. Annual CO fixation by microalgae 2 It accounts for about 40% of the global net photosynthetic output. In addition, it is rich in lipids, hydrocarbons, proteins, soluble polysaccharides, and high-value natural pigments such as astaxanthin and β-carotene. Therefore, it is important in environmental protection, energy and health. Today, when the problem is attracting much attention, microalgae are getting more and more attention. [0003] After the microalgae culture is completed, it must be collected, dried, broken and extracted to obtain microalgae oil. Microalgae ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/06
Inventor 宋成才张玉宝程乐明赵晓宋庆峰王青杜娟谷蔚曹雅琴
Owner ENN SCI & TECH DEV
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