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

Heavy metal ion adsorbed film and preparation

A heavy metal ion, adsorption membrane technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of enhanced heavy metal adsorption capacity, complex preparation process, and complex preparation process, To achieve the effect of strong adsorption capacity, convenient and fast operation, and good regeneration

Inactive Publication Date: 2008-09-03
威海金钰环保科技有限公司
View PDF2 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN1359750A discloses a method for synthesizing heavy metal adsorbents from silica gel cross-linked chitosan, but the preparation process of this method is complicated and uses highly toxic organic solvents, which easily pollutes the environment
[0005] Chinese patent CN 1869105A discloses a method for preparing a copolymer of mercaptopolyaspartic acid and chitosan. A large number of amine groups are introduced into the polymer to enhance the heavy metal adsorption capacity of the polymer, but the preparation process is complicated

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

[0013] Prepare a heavy metal ion adsorption membrane with a mass ratio of polyvinyl alcohol to polyvinyl amine of 95:5: first weigh 95 grams of polyvinyl alcohol, then weigh 5 grams of polyvinyl amine, add water to make the total mass 2000 grams, dissolve to obtain Mass fraction is 5% homogeneous mixed solution; In above-mentioned mixed solution, adding mass fraction is 20 grams of glutaraldehyde aqueous solution of 5%, cross-linking agent consumption accounts for 1% of polymer gross mass; Add 20 grams of hydrochloric acid wherein , after stirring evenly, put the above solution in a petri dish and dry it at 30-50°C to form a film; the obtained film is fully swollen with deionized water to remove excess acid, and then vacuum-dried to obtain polyvinylamine-functionalized polyvinyl alcohol Heavy metal ion adsorption membrane. The results of the heavy metal adsorption experiment of the film are: the maximum adsorption of Cu per gram of polymer film 2+ 60mg, Pb 2+ 40mg, Cd 2+ 50...

Embodiment 2

[0015] The materials used were polyvinyl alcohol and polyallylamine, and the other conditions were the same as in Example 1 to obtain a polyvinylamine functionalized polyvinyl alcohol heavy metal ion adsorption membrane. The results of the heavy metal adsorption experiment of the film are: the maximum adsorption of Cu per gram of polymer film 2+ 65mg, Pb 2+ 48mg, Cd 2 + 52mg.

Embodiment 3

[0017] The materials used were polyvinyl alcohol and branched polyethyleneimine, and the other conditions were the same as in Example 1 to obtain a branched polyethyleneimine functionalized polyvinyl alcohol heavy metal ion adsorption membrane. The results of the heavy metal adsorption experiment of the film are: the maximum adsorption of Cu per gram of polymer film 2+ 58 mg, Pb 2+ 35mg, Cd 2+ 46 mg.

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 heavy metal ion adsorption film and a production method thereof. The heavy metal ion adsorption film is composed of polyvinyl alcohol and amido polymers at a polyvinyl alcohol / amido polymer ratio of (95:5) to (20:80). The amido polymers are polyvinyl amine, polyallylamine and branched polyethylene. The amido polymers are introduced into the aqueous solution of polyvinyl alcohol and then the resulting mixture undergoes crosslinking reaction with a cross-linking agent to form a three-dimensional polymer network. The method is simple, feasible and free of organic solvents. The introduction of amido groups can efficiently increase the water swellability of polyvinyl alcohol film and simultaneously enhance the adsorbability of the film to heavy metal ions.

Description

technical field [0001] The present invention relates to a heavy metal ion adsorption membrane and a preparation method, in particular to a polyvinyl alcohol membrane functionalized with an amino polymer and a preparation method for blending polyvinyl alcohol and an amino polymer to form a cross-linked polymer network membrane . technical background [0002] Heavy metals generally exist in nature in natural concentrations. However, due to the increasing mining, smelting, processing and commercial manufacturing activities of heavy metals by humans, many heavy metals such as lead, mercury, cadmium, and diamond enter the atmosphere, water, and soil environment. cause serious environmental pollution. Adsorption is one of the commonly used methods for treating sewage containing heavy metal ions. Although the commonly used adsorbents such as activated carbon have a certain adsorption effect on heavy metal ions, they have disadvantages such as complicated transportation and post-t...

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): B01J20/26C02F1/28C02F1/62
Inventor 王丕新陈强王记华宋春雷杨清波张文德
Owner 威海金钰环保科技有限公司
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