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

Synthetic method of chelating fiber apf with selective adsorption to lead ions

A technology of chelating fiber and synthesis method, applied in fiber treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as poor adsorption performance, achieve low price, good selective adsorption performance, and functional base conversion rate Good results

Inactive Publication Date: 2016-01-20
ZHEJIANG GONGSHANG UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chelating fiber APF overcomes the problem of poor selective adsorption of heavy metals before modification, and has high selective adsorption of lead ions in mixed heavy metal solutions

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
  • Synthetic method of chelating fiber apf with selective adsorption to lead ions
  • Synthetic method of chelating fiber apf with selective adsorption to lead ions
  • Synthetic method of chelating fiber apf with selective adsorption to lead ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, a kind of synthetic method of the chelating fiber APF (hereinafter referred to as chelating fiber APF) that lead ion has selective adsorption, carries out following steps successively:

[0045] 1) Put 20.0 mg of the matrix --- acrylic modified polytetrafluoroethylene fiber (PTFE-g-AA) in a 100 mL three-necked bottle, add 25 mL of toluene and soak for 7 to 9 hours;

[0046] Remarks: The content of PTFE-g-AA functional group (ie -COOH, which can be determined by acid-base back titration method) in acrylic modified polytetrafluoroethylene fiber (PTFE-g-AA) is 3.07mmol / g. It can be determined in accordance with the relevant master's thesis: Wang Zhipeng, Weak acid ion exchange fiber prepared by irradiation grafting of polytetrafluoroethylene fiber and its application, Nankai University, 2004-5-1. Part 2-3-2 of which can be measured.

[0047]2) Then add 0.245mmol of ligand-4-aminopyridine to the three-necked flask (that is, the reaction molar ratio of PTFE-g-AA...

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
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a synthesis method of a chelate fiber animal protein factor (APF) with selective adsorption on lead ions. The method comprises the following steps: 1) by taking a crylic acid-modified polytetrafluoroethylene fiber as a parent, putting the crylic acid-modified polytetrafluoroethylene fiber into methylbenzene to soak for 7-9 hours; 2) adding a ligand to the product obtained in the step 1), stirring at 60-80 DEG C to react for 12-16 hours, wherein the ligand is 4-aminopyridine; the molar ratio of the parent to the ligand is (0.9-1.1):4; 3) filtering the product obtained in the step 2), drying the obtained filter cake into constant weight after rinsing, so as to obtain the chelate fiber APF with selective adsorption on the lead ions. By adopting the chelate fiber APF obtained by the method disclosed by the invention, the defect of poor selective adsorption performance of the original parent is overcome, and the obtained chelate fiber APF shows excellent selectivity on adsorption of the lead ions.

Description

technical field [0001] The present invention relates to a method for synthesizing a new type of chelating fiber, in particular to using acrylic modified polytetrafluoroethylene fiber as a matrix and using 4-aminopyridine as a ligand to synthesize a chelating fiber capable of selectively adsorbing lead ions APF method. Background technique [0002] With the continuous deepening of global industrialization and the continuous development of social economy, the continuous development of energy, electroplating, transportation, metallurgy, mining, construction, battery manufacturing, metal deep processing and other industries, heavy metals have been used more and more widely. The numbers are also growing exponentially. Heavy metals enter the human body through various channels and accumulate, posing a great threat to people's life safety. The "Twelfth Five-Year Plan" put forward specific comprehensive prevention and control measures for heavy metal pollution. [0003] Chelating...

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): D06M13/355B01J20/26B01J20/28C02F1/28C02F1/62D06M101/22
Inventor 熊春华何若铭吴扬姚彩萍
Owner ZHEJIANG GONGSHANG UNIVERSITY
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