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

Preparation method of adsorption material with high selectivity on different heavy metal ions

A technology of heavy metal ions and adsorption materials, applied in the field of environmental chemistry and engineering, to achieve the effects of low cost, high efficiency, easy elution and recovery

Inactive Publication Date: 2013-09-11
WUHAN COMEON ENVIRONMENT ENG
View PDF6 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to prepare a highly selective surface adsorption material to the corresponding heavy metal ion by changing different heavy metal imprinted ions, so as to solve the separation of mixed solutions, industrial production water, and some specific heavy metal ions in the wastewater treatment process, Removal or Enrichment Questions

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

[0017] Implementation Example 1 For Cu 2+ Preparation of materials with highly selective adsorption

[0018] Weigh 500g of montmorillonite soil, roast at 300°C for 4 hours, grind, and pass through a 200-mesh sieve. Add 100 g of activated montmorillonite into the reaction vessel, add 1 L of deionized water, make a slurry, and then add 20 mL of hydrochloric acid with a concentration of 1 mol / L, 40 g of double-distilled aniline, 5 g of initiator, and 5 mL KH-570, and a small amount of ammonium persulfate, slowly stirred for polymerization for 6 hours. The reaction product is subjected to suction filtration, water washing, drying and grinding in sequence, and then passed through a 150-mesh sieve.

[0019] In a reactor, 50 g of the above polymerized powder was mixed with 150 mL of Cu with a concentration of 150 mg / L 2+ The solution was mixed evenly, and the pH value of the system was adjusted to 6 with NaAC-HAC buffer solution, stirred slowly at 50 °C, reacted for 40 min...

Embodiment 2

[0021] Implementation Example 2 For Cr 3+ Preparation of materials with highly selective adsorption

[0022] Weigh 500g of montmorillonite soil, roast at 300°C for 4 hours, grind, and pass through a 200-mesh sieve. Add 100 g of activated montmorillonite into the reaction vessel, add 1 L of deionized water, make a slurry, and then add 20 mL of hydrochloric acid with a concentration of 1 mol / L, 30 g of double-distilled aniline, 5 g of initiator, and 5 mL KH-570, and a small amount of ammonium persulfate, slowly stirred for polymerization for 6 hours. The reaction product is subjected to suction filtration, water washing, drying and grinding in sequence, and then passed through a 150-mesh sieve.

[0023] In a reactor, 50 g of the above polymerized powder was mixed with 150 mL of Cr at a concentration of 100 mg / L 3+ The solution was mixed evenly, and the pH value of the system was adjusted to 5 with NaAC-HAC buffer solution, stirred slowly at 50 °C, reacted for 40 min, ...

Embodiment 3

[0025] Implementation example 3 to Cu 2+ Preparation of materials with highly selective adsorption

[0026] Weigh 500g of nano-silica, bake at 400°C for 2 h, grind, and pass through a 200-mesh sieve. Add 100 g of activated nano-silicon dioxide into the reaction vessel, inject 200 mL of deionized water, and make a slurry. Take 10 g of chitosan and dissolve it in 300 mL of 0.1mol / L acetic acid solution, add it to the above reactor, then add 5 mL of silane coupling agent to the reactor, stir continuously, react for 4 h, pump Filter, wash with water, dry and grind. Weigh 50 g of the above materials and 100 mL of Cu with a concentration of 200 mg / L 2+ The solutions were mixed, and the pH value of the system was adjusted to 6 with NaAC-HAC buffer solution, reacted at 50 °C for 40 min, and then washed repeatedly with deionized water until no Cu was detected. 2+ , dried and ground. Take 50g of the above Cu 2+ The chelating adsorption material was placed in 100 mL of a...

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 provides a preparation method of an adsorption material with high selectivity on different heavy metal ions. The invention relates to a method of producing a reusable adsorption material with selectivity on such heavy metal ions as copper, chromium, lead, mercury, and the like, wherein inorganic minerals such as montmorillonite and silica are used as modified carriers, and the method comprises the following steps of: 1) pre-treating and thermally activating the carriers; 2) performing surface polymerizing on a template ion carrier; 3) performing crosslinking film covering technology on carrier surface imprinting molecules. The materials can be applied in treatment processes of mixed solutions, production water and wastewater for separating, removing and enriching specific heavy metal ions.

Description

technical field [0001] The invention belongs to the field of environmental chemistry and engineering, and relates to a preparation technology of a class of metal cation selective adsorption materials. Background technique [0002] Molecular imprinted polymer (MIP) is a polymer material with molecular recognition ability. The traditional method of preparing molecularly imprinted polymers is the embedding method, that is, in the presence of template molecules, functional monomers and crosslinks Copolymerization of reagents (or crosslinking of crosslinkable functional macromolecules), due to the existence of covalent or non-covalent bonds (hydrogen bonds, metal coordination bonds) between template molecules and functional monomers (or functional macromolecules) , electrostatic attraction, etc.), the functional monomers will be arranged around the template molecules in a certain order. After the template molecule is removed from the polymer, a cavity that is complementary to th...

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): B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 卢玉献阴艳华王欢郭杰文志敏罗逸
Owner WUHAN COMEON ENVIRONMENT ENG
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