Foam distillation purification method

A foam and foam separation technology, applied in the field of separation and purification, can solve problems such as purification of untargeted components

Active Publication Date: 2014-10-29
NANKAI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing foam separation method can only extract, recycle and concentrate the surface active substances but cannot purify the target components in a real sense, and provides a foam distillation purification method to realize surface active substances. Active substances are extracted, concentrated and purified by rectification to obtain high-purity target components

Method used

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Examples

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Embodiment 1

[0070] Example 1, for purifying fungal hydrophobin HGFⅠ from fermentation supernatant

[0071] 1 Estimate the content of HGFⅠ and miscellaneous proteins in the fermentation supernatant;

[0072] The fermentation supernatant mainly contains ions and other small molecular substances and proteins. Since the ultrafiltration method has advantages in removing ions, we do not regard ions and other small molecular substances as impurities in the foam separation process, but only miscellaneous proteins. As impurities, that is, HGFⅠ is the target component mentioned above, and miscellaneous protein is the target impurity. By performing sds-page electrophoresis on the fermentation supernatant as figure 2(M: marker, 1: HGFⅠ fermentation broth), and grayscale analysis of the gel, we got the result that HGFⅠ accounted for about 60% of the total grayscale of the swimming lane, and miscellaneous proteins accounted for about 40% of the total grayscale of the swimming lane. Through the...

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Abstract

A foam separation method for extraction and concentration of a surface active substance is different from traditional. The invention provides the foam rectification purification method which can extract, concentrate, rectify and purify the surface active substance. The method can be roughly divided into 7 steps: 1, estimating the contents of an objective component and an objective impurity in a material liquid; 2, determining the pH and the temperature T allowing the objective component to have highest surface activity in a tolerance range of the objective component; 3, determining the highest collect height beta and the corresponding apparent gas velocity Q; 4, determining the lowest collect height alpha; 5, determining the objective component enrichment ratio and recovery rate changed along with the height and between the height alpha and the height beta; 6, according to the data obtained in the steps 1-5 and according to purity requirements of a product, designing a purification strategy, trying to purify the material liquid, and carrying out fine adjustment on the purification strategy according to the detection result; and 7, producing according to all the production conditions determined in the steps 1-6. After purification by the method, a concentrated solution of the object component can be acquired, and the product with required purity is obtained.

Description

technical field [0001] The invention relates to the technical field of separation and purification, in particular to a method for extracting, concentrating and rectifying to purify surface active substances. Background technique [0002] The principle of foam separation technology is to allow substances in the solution that can be combined with surfactants through physical and chemical forces or substances with surface activity in the solution to be adsorbed during the bubbling process and enriched in the bubbling process. The surface of the bubbles can achieve the purpose of enriching and extracting the substances to be separated. The essence of its separation is the difference in surface activity of various components in the solution. During the foam separation process, the gas distributor generates bubbles in the liquid phase, and the separated surface active components are adsorbed on the gas-liquid two-phase interface of the bubbles. After the adsorption is completed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/42
Inventor 于勇乔明强赵立强邰飞飞王翔翔刘金源白艳玲张秀明徐海津
Owner NANKAI UNIV
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