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

Method for adsorbing thorium by utilizing fiber-bridged beta-cyclodextrin derivative

A technology of cyclodextrin and derivatives, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., can solve environmental pollution and other problems, and achieve high adsorption rate effect

Inactive Publication Date: 2016-06-15
NANHUA UNIV
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the massive mining of thorium and the rapid development of the energy industry, a large amount of industrial wastewater containing thorium is discharged into the environment, resulting in extensive environmental pollution

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 adsorbing thorium by utilizing fiber-bridged beta-cyclodextrin derivative
  • Method for adsorbing thorium by utilizing fiber-bridged beta-cyclodextrin derivative
  • Method for adsorbing thorium by utilizing fiber-bridged beta-cyclodextrin derivative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Accurately weigh 5.0 g of β-CD and 3.0 g of NaOH with an electronic balance, add them to a 250 mL flask in turn, and then add 100 mL of deionized water to obtain a cloudy solution. In an ice-water bath, stir the cloudy liquid with a constant temperature heating magnetic stirrer until it becomes clear, then add 1.68 g of p-toluenesulfonyl chloride to the flask, and keep the reaction at low temperature for 5 hours. Then, the unreacted p-toluenesulfonyl chloride was suction filtered, and the acidity of the clarified solution was adjusted to neutrality with HCl with a substance concentration of 0.1 mol / L, and then refrigerated overnight. The precipitated white crystals were recrystallized three times and fully dried to obtain 6-p-toluenesulfonyl ester-β-cyclodextrin.

[0028] Accurately weigh 1.2374g of 6-p-toluenesulfonyl ester-β-cyclodextrin, dissolve it in 150mL of 50°C hot water to form an aqueous solution of 6-p-toluenesulfonyl ester-β-cyclodextrin, and dissolve it in ...

Embodiment 2

[0031] Accurately weigh 5.0 g of β-CD and 3.0 g of NaOH with an electronic balance, add them to a 250 mL flask in turn, and then add 100 mL of deionized water to obtain a cloudy solution. In an ice-water bath, stir the cloudy liquid with a constant temperature heating magnetic stirrer until it becomes clear, then add 1.68 g of p-toluenesulfonyl chloride to the flask, and keep the reaction at low temperature for 5 hours. Then, the unreacted p-toluenesulfonyl chloride was suction filtered, and the acidity of the clarified solution was adjusted to neutrality with HCl with a substance concentration of 0.1 mol / L, and then refrigerated overnight. The precipitated white crystals were recrystallized three times and fully dried to obtain 6-p-toluenesulfonyl ester-β-cyclodextrin.

[0032] Accurately weigh 1.2374g of 6-p-toluenesulfonyl ester-β-cyclodextrin, dissolve it in 200mL of 50℃ hot water to form an aqueous solution of 6-p-toluenesulfonyl ester-β-cyclodextrin, and dissolve it in 1...

Embodiment 3

[0035] Accurately weigh 5.0 g of β-CD and 3.0 g of NaOH with an electronic balance, add them to a 250 mL flask in turn, and then add 100 mL of deionized water to obtain a cloudy solution. In an ice-water bath, stir the cloudy liquid with a constant temperature heating magnetic stirrer until it becomes clear, then add 1.68 g of p-toluenesulfonyl chloride to the flask, and keep the reaction at low temperature for 5 hours. Then, the unreacted p-toluenesulfonyl chloride was suction filtered, and the acidity of the clarified solution was adjusted to neutrality with HCl with a substance concentration of 0.1 mol / L, and then refrigerated overnight. The precipitated white crystals were recrystallized three times and fully dried to obtain 6-p-toluenesulfonyl ester-β-cyclodextrin.

[0036]Accurately weigh 1.2374g of 6-p-toluenesulfonyl ester-β-cyclodextrin, dissolve it in 200mL of 50℃ hot water to form an aqueous solution of 6-p-toluenesulfonyl ester-β-cyclodextrin, and dissolve it in 10...

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 relates to a method for adsorbing thorium by utilizing a fiber-bridged beta-cyclodextrin derivative. According to the method provided by the invention, 6-p-toluenesulfonyl ester-beta-cyclodextrin is synthesized, and then reacts with dipheylethanedione to synthesize a 6-p-toluenesulfonyl ester-beta-cyclodextrin fiber-bridged dipheylethanedione (BB beta-CD) adsorbent; and C=O with a chelating effect on metal ions is introduced so that the thorium can be adsorbed very well. All the raw materials are low in price and easy to purchase. A result shows that when the pH value is equal to 3.0 and the adsorption time is 20 minutes, the adsorption on Th<4+> by the BB beta-CD adsorbent is balanced, and the maximum value of an adsorption amount reaches 52.2mg / g; and meanwhile, an adsorption process is described by using a Langmuir adsorption isothermal line and a secondary adsorption dynamic speed equation. Mg<2+>, Pb<2+>, Zn<2+>, Fe<3+> and Cd<2+> are taken as interference ions and nearly do not have influences on the adsorption amount on the Th<4+>.

Description

technical field [0001] The invention relates to a method for adsorbing thorium by using bridged β-cyclodextrin derivatives. Background technique [0002] With the massive mining of thorium and the rapid development of the energy industry, a large amount of industrial wastewater containing thorium is discharged into the environment, resulting in extensive environmental pollution. Therefore, the research on the adsorption of thorium has aroused high and extensive attention of relevant workers. This method utilizes the special hydrophobic property of the internal cavity of β-cyclodextrin (β-CD), and can selectively combine with certain metal chelates to form bridged β-CD with synergistic adsorption. Therefore, it is of positive significance to use bridged β-cyclodextrin derivatives to selectively adsorb thorium. Contents of the invention [0003] In order to solve the above problems, a method for adsorbing thorium by bridged β-cyclodextrin derivatives is proposed. This met...

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): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/24C02F1/286C02F2101/20
Inventor 刘慧君荆鹏飞袁亚莉孙允凯龙威胡胜勇冯志远雷兰林
Owner NANHUA 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