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

Method for preparing absorbent resin with bivalent cadmium ion and bivalent lead ion cavities

A technology for adsorbing resins and holes, which is applied in the field of preparation of adsorption resins, and can solve problems such as the preparation methods of adsorption resins that have not yet been seen.

Active Publication Date: 2011-07-27
上海日多高分子材料有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Found through literature search to prior art, have not yet seen relevant " having Cd 2+ and Pb 2+ A report on the preparation method of the adsorption resin of ions and holes

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

[0023] Weigh the following raw materials:

[0024] Chitosan 0.05mol;

[0025] Get single-capped polyethylene glycol-400 macromonomer by the mol ratio=1:1 of methacrylic acid single-capped polyethylene glycol-400 macromonomer and chitosan;

[0026] According to the molar ratio of acrylic acid double-capped polyethylene glycol-400 macromonomer to single-capped polyethylene glycol-400 macromonomer=1.5:1, take double-capped polyethylene glycol-400 macromonomer as cross-linking agent.

[0027] The preparation method of the present embodiment comprises the following steps:

[0028] Step 1, the chitosan of 0.05mol is dispersed in the aqueous solution of ethanol that is 50% by mass fraction, then adds single-capped polyethylene glycol-400 macromonomer, double-capped polyethylene glycol-400 macromonomer Stir evenly with photoinitiator 1173 of 1% of the total mass of the above two reactive monomers;

[0029] Step 2, adjust the acidity of the solution with methacrylic acid to dissolv...

Embodiment 2

[0032] Weigh the following raw materials:

[0033] Weigh chitosan 0.05mol;

[0034] According to the mol ratio of chitosan and methacrylic acid single-capped polyethylene glycol-1000 macromonomer=1:2.5, get single-capped polyethylene glycol-1000 macromonomer; press acrylic acid double-capped polyethylene glycol The molar ratio of -1000 macromonomer to single-capped polyethylene glycol-1000 macromonomer=1.5:1. Double-capped polyethylene glycol-1000 macromonomer was used as a crosslinking agent.

[0035] Step 1, the chitosan of 0.05mol is dispersed in the aqueous solution of ethanol that is 50% by mass fraction, then adds single-capped polyethylene glycol-1000 macromonomer, double-capped polyethylene glycol-1000 macromonomer And the photoinitiator 1173 of 1.8% of the total mass of the above two reactive monomers, stir evenly;

[0036] Step 2, adjust the acidity of the solution with methacrylic acid to dissolve the dispersed chitosan into a thick and uniform solution, then add ...

Embodiment 3

[0039] Weigh the following raw materials:

[0040] Chitosan 0.05mol;

[0041] Get single-capped polyethylene glycol-400 macromonomer by the mol ratio=1:3 of methacrylic acid single-capped polyethylene glycol-400 macromonomer and chitosan;

[0042] According to the molar ratio of acrylic acid double-capped polyethylene glycol-1000 macromonomer and single-capped polyethylene glycol-400 macromonomer=1.5:1, take double-capped polyethylene glycol-1000 macromonomer as cross-linking agent.

[0043] Step 1, the chitosan of 0.05mol is dispersed in the aqueous solution of the ethanol that is 50% by mass fraction, then adds single-capped polyethylene glycol-400 macromonomer, double-capped polyethylene glycol-1000 macromonomer and the photoinitiator 1173 of 3% of the total mass of the above two reactive monomers, and stir evenly;

[0044] Step 2, adjust the acidity of the solution with methacrylic acid to dissolve the dispersed chitosan into a thick and uniform solution, then add 2% of...

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 preparing absorbent resin with bivalent cadmium ion and bivalent lead ion cavities, and belongs to the technical field of water treatment. The method comprises the following steps of: 1, adding chitosan, polyethylene glycol macromonomer mono-blocked by methacrylic acid, polyethylene glycol macromonomer double-blocked by crylic acid and photo initiator in aqueous solution of ethanol and stirring the mixture to obtain solution; 2, adding the crylic acid or the methacrylic acid into the solution, then adding Cd2+ and Pd2+ into the solution, and irradiating the solution by ultraviolet light to obtain a solid product; and 3, soaking the solid product with hydrochloric acid, adjusting the pH value to 7 with ammonia water, and drying to obtain the absorbent resin with the Cd2+ and Pb2+ cavities. The absorbent resin prepared by the method has high selectivity and high adsorbability for the Cd2+ and Pb2+, contributes to accurately enriching the Cd2+ and Pb2+, achieves the purposes of removing and recycling the Cd2+ and Pb2+, and can be used repeatedly.

Description

technical field [0001] The invention relates to a preparation method in the technical field of water treatment, in particular to a preparation method of an adsorption resin having holes for divalent cadmium ions and divalent lead ions. Background technique [0002] With the rapid development of economic construction, environmental issues have attracted global attention, and groundwater, as an important water resource, occupies an important position. Groundwater accounts for 95% of the world's available freshwater resources. Groundwater accounts for 30% of the total amount of water used in cities in my country. The proportions of groundwater utilization in North China and Northwest cities are as high as 72% and 66% respectively. At present, about 50% of urban groundwater is polluted to varying degrees. Pollutants include heavy metals, metalloid ions (such as AsO 3 - ), organic matter and nitrate, etc., and most of them are compound pollution. Especially Cd 2+ and Pb 2...

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): C08G81/00C08F283/00C08F283/06C08F251/00C08J9/26B01J20/30B01J20/26C02F1/28
Inventor 刘预孙承兴余宙仵彦卿
Owner 上海日多高分子材料有限公司
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