Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for increasing microalgae grease extraction amount by rapid solvent extraction

A technology of microalgae oil and extraction quantity, which is applied in the production of oil/fat, refining of oil/fat, chemical instruments and methods, etc., can solve the problems of low extraction efficiency, high cost, and denaturation of nutrients.

Active Publication Date: 2020-10-23
SHANDONG BUSINESS INST
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the prior art, the extraction of oil and fat from microalgae generally needs to be processed by wall breaking, microwave digestion, ultrasonic crushing and enzymatic hydrolysis, and then extracted by methods such as Soxhlet extraction, organic solvent method, and acid heat method. Although it is simple and easy Yes, but the extraction efficiency is low, the reagent toxicity is high, the local high temperature of the ultrasonic wave will cause some nutrients to denature, the price of the enzyme is high, and supercritical carbon dioxide is also used for extraction, but the cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for increasing microalgae grease extraction amount by rapid solvent extraction
  • Method for increasing microalgae grease extraction amount by rapid solvent extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Microalgae pretreatment: remove impurities from oil-rich wet microalgae, and irradiate with short- and medium-wave infrared radiation with a wavelength of 1 μm and a radiation power of 910 W. The radiation distance is 11 cm, the temperature is 65 ° C, and the irradiation time is 1 h. Drying the microalgae, and then crushing the dried microalgae into a microalgae dry powder with a particle size of 100 meshes with a high-speed crusher, for subsequent use;

[0043] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then pass in 250L of ether, pressurize to 10Mpa, and heat up to 50 o C, standing for extraction for 20min, cooling to normal temperature to obtain a grease solution;

[0044] (3) Separation and purification: filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.4Mpa to separate the oil and solvent, then place the oil liquid in a glass bottle and...

Embodiment 2

[0051] (1) Microalgae pretreatment: remove impurities from chlorella, and irradiate with medium and short-wave infrared radiation with a wavelength of 1.6 μm and a radiation power of 996W. The radiation distance is 10.4cm, the temperature is 67.2°C, and the irradiation time is 1.1h. Obtaining the dried microalgae, and then crushing the dried microalgae into a microalgae dry powder with a particle size of 116 meshes with a high-speed crusher, for subsequent use;

[0052] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then introduce 275L of methanol, pressurize to 11.8Mpa, and heat up to 81.2 o C, standing for extraction for 16.1min, cooling to normal temperature to obtain a grease solution;

[0053] (3) Separation and purification: filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.6Mpa to separate the oil and solvent, then place the oil liquid in a glass bo...

Embodiment 3

[0060] (1) Microalgae pretreatment: remove impurities from red algae, and irradiate with short- and medium-wave infrared with a wavelength of 2.1 μm and a radiation power of 1075 W. The radiation distance is 9.3 cm, the temperature is 68.4 ° C, and the irradiation time is 1.3 h. , to obtain dry microalgae, and then use a high-speed crusher to crush the dry microalgae into a microalgae dry powder with a particle size of 144 mesh, and set aside;

[0061] (2) Extraction: Add 250kg of microalgae dry powder into a closed reaction kettle, replace the internal air with nitrogen, then pass in 310L of acetone, pressurize to 13Mpa, and heat up to 110 o C, standing for extraction for 13.1min, cooling to normal temperature to obtain a grease solution;

[0062] (3) Separation and purification: Filter the oil solution through a PVDF / polysilane composite filter membrane under a pressure of 2.8Mpa to separate the oil and solvent, then place the oil liquid in a glass bottle and heat it to 45.2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for increasing the microalgae grease extraction amount by rapid solvent extraction, and relates to the field of biological extraction. The method comprises the following steps of: (1) microalgae pretreatment, (2) extraction, and (3) separation and purification: filtering a grease solution through a PVDF / polysilane composite filter membrane to separate grease and asolvent, then putting the grease liquid into a glass bottle, performing heating to 20-60DEG C, conducting vacuumizing to -0.1Mpa, removing a trace amount of an impurity solvent, and performing separating to obtain microalgae grease; and (4) performing repeated extraction for 3-8 times by utilizing the solvent obtained by separation and the extracted microalgae. The method can efficiently extract the grease in the microalgae in an environment-friendly and low-cost manner, and the grease extraction amount is increased.

Description

technical field [0001] The invention relates to biological extraction, in particular to a method for increasing the extraction amount of microalgae oil by rapid solvent extraction. Background technique [0002] Microalgae refers to algae that can only be observed under a microscope. There are many types of algae. At present, there are more than 400,000 types of microalgae known in the world, and their sources are very rich. There are a large number of nutrients in microalgae cells, including proteins, fatty acids, polysaccharides, polypeptides, natural pigments, vitamins, etc., which are widely used in biology, medicine, new energy, aquaculture, cosmetics and other fields, and are of great significance to human development. Among them, the oil content in microalgae is relatively high, and the oil can be used in bioenergy after treatment to replace poor-quality waste oil. The unsaturated fatty acids in oil can also be used in the field of biomedicine, which can improve memory...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C11B1/02C11B1/10C11B3/00B01D69/12B01D67/00B82Y30/00B01D71/78D06M15/256D06M13/292D06M15/643D06M11/74D06M11/76D06M101/32
CPCB01D67/0006B01D69/12B01D69/125B01D71/78B01D2323/38B01D2323/50B82Y30/00C11B1/02C11B1/10C11B3/008D06M11/74D06M11/76D06M13/292D06M15/256D06M15/643D06M2101/32
Inventor 邵珍美黎海红张冬梅于海燕杜延兵谭斌刘凯丽
Owner SHANDONG BUSINESS INST