Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Molecular-recognition separation membrane and preparation method and application thereof

A molecular recognition and separation membrane technology, applied in the field of separation membranes, can solve the problems of difficult recovery and reuse of adsorbents, obstacles to practical application, lack of regeneration methods, etc., achieve significant adsorption capacity, improve reusability, and simple immobilization process Effect

Inactive Publication Date: 2012-02-01
ZHEJIANG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the existing technology is to directly treat sewage with cyclodextrin or its polymer powder, which has difficulties in recovering and reusing the adsorbent, and even causes secondary pollution. However, there is still no effective means of regeneration at present. In addition, in the prior art, cyclodextrin is only used as an adsorbent, and it is not combined with the separation process in sewage treatment. However, actual sewage often contains a variety of complex pollutants, which requires the introduction of water treatment methods such as membrane separation.
It can be seen that there are still obvious deficiencies in the existing technology and technology of removing phenolic pollutants in water by using the recognition function of cyclodextrin, which hinders the practical application.

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
  • Molecular-recognition separation membrane and preparation method and application thereof
  • Molecular-recognition separation membrane and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The carboxyl-containing polypropylene separation membrane on the surface prepared by the following method is used as the base membrane: the polypropylene separation membrane is immersed in the n-heptane solution of the photoinitiator benzophenone with a concentration of 1 mmol / L, and after 1 hour, it is naturally After drying, the membrane is immersed in an acrylic acid aqueous solution with a monomer volume concentration of 10%, taken out after being irradiated with ultraviolet light for 20 minutes, washed and dried to obtain a polypropylene separation membrane with carboxyl groups on the surface.

[0040] The base film was immersed in an aqueous solution of 1-ethyl-3-(N,N-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide at a molar ratio of 1:1 (1-ethyl -3-(N, N-dimethylaminopropyl) carbodiimide concentration is 1mg / mL), soaked for 0.5 hours to activate, wash, and then immerse the activated basement membrane in a concentration of 50mmol / L, The solvent is 50% eth...

Embodiment 2

[0045] Use the carboxyl-containing polyethylene separation membrane on the surface prepared by the following method as the base membrane: prepare a 5g / L polyacrylic acid aqueous solution, then immerse the polyethylene separation membrane in the solution, shake it at room temperature for 3 hours, take it out and dry it in the air , and then treated in an atmospheric pressure plasma apparatus for 30 seconds, washed and dried to obtain a polyethylene separation membrane containing carboxyl groups on the surface.

[0046] The base film was immersed in an aqueous solution of 1-ethyl-3-(N,N-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide at a molar ratio of 1:1 (1-ethyl -3-(N, N-dimethylaminopropyl) carbodiimide concentration is 10mg / mL), soak for 1 hour to activate, wash, and then immerse the activated basement membrane in a concentration of 20mmol / L, The solvent is the aminophenylboronic acid solution with 20% ethanol solution by volume to react for 1 hour, and the amino...

Embodiment 3

[0051] The carboxyl-containing polysulfone separation membrane on the surface prepared by the following method is used as the base membrane: the polysulfone separation membrane is immersed in the n-heptane solution of the photoinitiator benzophenone with a concentration of 1 mmol / L, and after 1 hour, it is naturally After drying, the membrane is immersed in an acrylic acid aqueous solution with a monomer volume concentration of 10%, taken out after being irradiated with ultraviolet light for 20 minutes, washed and dried to obtain a polysulfone separation membrane with carboxyl groups on the surface.

[0052] Immerse the base film in an aqueous solution of 1-ethyl-3-(N,N-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide (1-ethyl- 3-(N,N-Dimethylaminopropyl) carbodiimide at a concentration of 0.1mg / mL), soak for 3 hours to activate, wash, and then immerse the activated basement membrane in a concentration of 1mmol / L 1. The solvent is 80% ethanol aqueous solution and the ...

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
percent by volumeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a molecular-recognition separation membrane, which comprises the following steps of: (1) adopting a polymer separation membrane of which the surface or body is provided with carboxyl as a base membrane; (2) soaking the base membrane in aqueous solution of 1-ethyl-3-(N,N-dimethyl aminopropyl) carbodiimide and N-hydroxysuccimide for activation, washing, soaking the activated base membrane into the solution of phenyl boronic acid solution for reaction, and washing to prepare a separation membrane for fixing the phenyl boronic acid; and (3) soaking the separation membrane for fixing the phenyl boronic acid into Tris-HCl buffer solution of cyclodextrin for reaction, and washing to prepare the molecular-recognition separation membrane. The method for preparing the molecular-recognition separation membrane has the advantages of simple operation and suitability for industrial production; and the prepared molecular-recognition separation membrane has obvious adsorptive capacity for phenol compounds. The molecular-recognition separation membrane has the advantages of capacity of improving the adsorptive capacity for the phenol compounds, easy regeneration and recovery, no secondary pollution, and practical value in removing phenol pollutants from water.

Description

technical field [0001] The invention relates to the technical field of separation membranes, in particular to a reproducible molecular recognition separation membrane based on the molecular recognition of phenylboronic acid and cyclodextrin, a preparation method thereof, and an application of the molecular recognition separation membrane in removing phenolic compounds in water bodies. Background technique [0002] In recent years, with the development of economy and society, environmental protection, especially water resource protection, has been valued by the whole society. Phenolic compounds are common water pollutants. For example, bisphenol A (Bisphenol A) is a chemical commonly used in the production of epoxy resin, polycarbonate and other materials. It is also a fungicide itself, and its toxicity and estrogen-like activity have been widely known. Bisphenol A and its similar pollutants not only originate from the wastewater in the production process, but also leak out ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F101/34B01J20/30B01J20/26B01J20/28
Inventor 万灵书徐志康王振刚
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com