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

Preparation method of modified magnetic chitosan microsphere heavy metal ion adsorbent

A technology of chitosan microspheres and heavy metal ions, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problem of high operating costs, high energy consumption, secondary environmental pollution, etc. problem, to achieve the effect of simple operation, high selective adsorption, and large adsorption capacity

Inactive Publication Date: 2013-08-28
ZHEJIANG GONGSHANG UNIVERSITY
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have some disadvantages, such as high operating costs, high energy consumption, and easy to cause secondary pollution to the environment, etc.

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
  • Preparation method of modified magnetic chitosan microsphere heavy metal ion adsorbent
  • Preparation method of modified magnetic chitosan microsphere heavy metal ion adsorbent
  • Preparation method of modified magnetic chitosan microsphere heavy metal ion adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1, a kind of preparation method of modified magnetic chitosan microsphere heavy metal ion adsorbent comprises the following steps:

[0053] One, prepare magnetic chitosan microsphere, carry out following steps successively:

[0054] ①. At room temperature, add 4% acetic acid solution to 0.6g chitosan powder to prepare about 20mL chitosan acetic acid solution with a mass fraction of 2.5%. After the chitosan is completely dissolved, add 0.15g Fe 3 o 4 Disperse the solid powder by ultrasonic oscillation (ultrasonic frequency 59kHz, oscillation amplitude 20mm) for 20min, then add a mixture of 50mL liquid paraffin and 20mL Span-80 (for example, S-20 can be used), and stir thoroughly for 10min;

[0055] ②. Heat up the product obtained in step ① to 55°C, add 3 mL of glutaraldehyde, set the stirring speed to 450 r / min, and cross-link the reaction for 3.5 hours under stirring;

[0056] ③. Add 5% (mass %) NaOH solution to the resultant in step ② to keep the solution ...

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
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a modified magnetic chitosan microsphere heavy metal ion adsorbent, and in particular relates to a modified magnetic chitosan material which has good selectivity and adsorptive property for heavy metal ions in food, and can be recycled, and a preparation method of the modified magnetic chitosan material. Specifically, the invention discloses the preparation method of the modified magnetic chitosan microsphere heavy metal ion adsorbent. The method comprises the steps of preparing magnetic chitosan microspheres by taking chitosan powder as a raw material, further preparing the magnetic chitosan microspheres into hydroxypropyl chlorine magnetic chitosan microspheres, and carrying out chemical grafting on the hydroxypropyl chlorine magnetic chitosan microspheres by taking the hydroxypropyl chlorine magnetic chitosan microspheres as parents and 2-aminothiazole as ligands to obtain the modified magnetic chitosan microsphere heavy metal ion adsorbent. The modified magnetic chitosan microsphere heavy metal ion adsorbent prepared by the method has preferential adsorption for Hg2+ ions.

Description

technical field [0001] The invention relates to a preparation method of a modified magnetic chitosan microsphere heavy metal ion adsorbent, in particular to a modified magnetic chitosan material with good selectivity for heavy metal ions in food, good adsorption performance and reusability and its preparation method. Background technique [0002] With the development of modern analytical techniques and analytical instruments, the detection limit of heavy metal elements has been greatly reduced. However, during the analysis of trace and ultra-trace heavy metal elements, direct determination is very difficult due to the interference of a large number of coexisting elements. There are two main ways to solve this problem. One way is to develop the combination technology of instruments, such as ICP-MS, etc., but this method is more complicated to operate, costly and time-consuming, and it is difficult to achieve routine analysis; the other way It is separated and enriched in ad...

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 Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30
Inventor 熊春华皮蕾蕾姚彩萍饶琛
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