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

Preparation method and application of magnetic carboxymethyl beta-cyclodextrin polymer

A technology of cyclodextrin polymer and carboxymethyl, which is applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve high cost, membrane fouling of membrane filtration, and increase mobility and other problems, to achieve the effect of easy recycling, simple preparation method and good regeneration performance

Inactive Publication Date: 2019-01-08
NANJING UNIV
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, dyes and heavy metals will form organic pollutants-heavy metal compound pollution. Because organic pollutants-heavy metal compound pollutants have the characteristics of stable complex form and good water solubility, their mobility is increased and the traditional treatment process is reduced. The treatment effect of heavy metals has an impact on the ecological security of water bodies
[0003] The traditional treatment process has many limitations in the treatment of printing and dyeing wastewater, such as the membrane pollution problem in the membrane filtration method, and the poor stability and high cost of the advanced oxidation method.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]A magnetic carboxymethyl β-cyclodextrin polymer with adsorption of organic pollutants and heavy metals in printing and dyeing wastewater, the preparation process of which comprises the following steps:

[0044] The first step, the synthesis of β-cyclodextrin polymer:

[0045] Dissolve 3.08g of β-cyclodextrin in 5ml of 3mmol NaOH solution, add dropwise a mixture of 5ml of epichlorohydrin and 0.86g of tetrafluoroterephthalonitrile into the solution, the reaction time is 2h, and the reaction temperature is 90°C; After the reaction, the pH of the reaction product was adjusted to neutral with hydrochloric acid, washed twice with water, then washed four times with tetrahydrofuran to remove excess reactants, finally washed once with dichloromethane, and filtered off with a Buchner funnel After solvent, the product is freeze-dried to obtain β-cyclodextrin polymer (NP-ECP);

[0046] The second step, the synthesis of carboxymethyl β-cyclodextrin polymer:

[0047] 2g beta-cyclode...

Embodiment 2

[0051] A magnetic carboxymethyl β-cyclodextrin polymer with adsorption of organic pollutants and heavy metals in printing and dyeing wastewater, the preparation process of which comprises the following steps:

[0052] The first step, the synthesis of β-cyclodextrin polymer:

[0053] Dissolve 3.08g of β-cyclodextrin in 5ml of 3.25mmol NaOH solution, add dropwise a mixture of 5ml of epichlorohydrin and 0.86g of tetrafluoroterephthalonitrile to the solution, the reaction time is 2h, and the reaction temperature is 92°C ; After the reaction, use hydrochloric acid to adjust the pH of the reaction product to neutral, wash 3 times with water, then wash 4 times with tetrahydrofuran to remove excess reactants, and finally wash once with dichloromethane, filter with a Buchner funnel After removing the solvent, the product is freeze-dried to obtain β-cyclodextrin polymer (NP-ECP);

[0054] The second step, the synthesis of carboxymethyl β-cyclodextrin polymer:

[0055] 2g of β-cyclodex...

Embodiment 3

[0059] A magnetic carboxymethyl β-cyclodextrin polymer with adsorption of organic pollutants and heavy metals in printing and dyeing wastewater, the preparation process of which comprises the following steps:

[0060] The first step, the synthesis of β-cyclodextrin polymer:

[0061] Dissolve 3.08g of β-cyclodextrin in 5ml of 3.5mmol NaOH solution, add dropwise a mixture of 5ml of epichlorohydrin and 0.86g of tetrafluoroterephthalonitrile to the solution, the reaction time is 2h, and the reaction temperature is 95°C ; After the reaction, use hydrochloric acid to adjust the pH of the reaction product to neutral, wash 3 times with water, then wash 5 times with tetrahydrofuran to remove excess reactants, and finally wash once with dichloromethane, filter with a Buchner funnel After removing the solvent, the product is freeze-dried to obtain β-cyclodextrin polymer (NP-ECP);

[0062] The second step, the synthesis of carboxymethyl β-cyclodextrin polymer:

[0063] 2g of β-cyclodext...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method and application of a magnetic carboxymethyl beta-cyclodextrin polymer. The method comprises the following steps: 1) synthesis of a beta-cyclodextrin polymer; 2) synthesis of a carboxymethyl beta-cyclodextrin polymer; 3) synthesis of the magnetic carboxymethyl beta-cyclodextrin polymer. The magnetic carboxymethyl beta-cyclodextrin polymer wraps organic matters to form a host-guest complex with the organic matters so as to achieve the purpose of removing the organic matters, and is easy to prepare and recycle; when being applied to adsorb organic pollutants and heavy metals in the printing and dyeing wastewater, the polymer can effectively remove poisonous pollutants from the printing and dyeing wastewater, thereby having a high application valuefor effective control and recycling of the printing and dyeing wastewater. Moreover, the prepared polymer is magnetic, good in regeneration performance and reusable.

Description

technical field [0001] The invention relates to the technical field of synthesis methods of magnetic materials, in particular to a preparation method and application of a magnetic carboxymethyl β-cyclodextrin polymer. Background technique [0002] Printing and dyeing wastewater is a major harmful industrial wastewater, mainly composed of substances lost during the production process of dyes and dye intermediates. According to the chemical structure of dyes, they can be divided into azo dyes, anthraquinone fuels, sulfur dyes, etc. These dyes are widely used due to their bright colors, good water solubility, and simple application techniques, but they are also difficult to remove. In order to make the dye color more solid, heavy metals are often added as auxiliary agents in the printing and dyeing process. These heavy metals enter the sewage treatment system with industrial wastewater and affect the aerobic biological treatment process of wastewater. At the same time, dyes a...

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): C08B37/16C02F1/28C02F101/38C02F101/34C02F101/36C02F101/20
CPCC02F1/285C08B37/0012C08B37/0015C02F2101/20C02F2101/36C02F2101/40C02F2101/38C02F2101/34
Inventor 谢显传胡月许贵洲
Owner NANJING 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