Preparation method of copper ion imprinted chitosan composite material

A composite material and chitosan technology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of high energy consumption, easy pollution by electrolysis, and high treatment costs. Achieve the effect of low energy consumption, simple and easy operation, and no secondary pollution

Active Publication Date: 2014-03-12
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, electrolysis is easy to pollute, and it consumes a lot of energy and has high processing costs.

Method used

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  • Preparation method of copper ion imprinted chitosan composite material
  • Preparation method of copper ion imprinted chitosan composite material
  • Preparation method of copper ion imprinted chitosan composite material

Examples

Experimental program
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Embodiment 1

[0053] 1. Preparation of imprinted polymer

[0054] (1)Al 2 o 3 Surface active SiO 2 layer deposition

[0055] Weigh an appropriate amount of Al 2 o 3 Powder, soak in acetone for 10h. Treat with 3mol / L NaOH solution, wash with deionized water, filter and dry. The dried Al 2 o 3 Place in a crucible and bake in a muffle furnace at 600°C for 7h. After natural cooling, soak in dilute HCl for 15 hours, wash with deionized water until neutral, filter, and dry in a vacuum drying oven for later use; take a certain amount of the above-mentioned dried samples, add an appropriate amount of 1 / 10 TEOS / ethanol The solution was placed in a round bottom flask at 70°C for 30h under reflux, then the reacted sample was filtered, moved into a muffle furnace for calcination at 550°C for 3h, and cooled naturally. After washing with deionized water, add 0.1 mol / L HCl and soak for 24 hours to obtain active Si-OH. Finally, it was washed with deionized water until neutral, and dried at 80°C ...

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Abstract

The invention relates to imprinted polymers, and specifically relates to a preparation method of a copper ion imprinted chitosan composite material. The preparation method provided by the invention comprises the following steps: (1) depositing a surface activity SiO2 layer on Al2O3; (2) silylanizing Al2O3 on which the surface activity SiO2 layer is deposited; (3) preparing a Cu<2+>-chitosan complex; (4) preparing a copper ion imprinted chitosan composite material template; and (5) eluting, washing and drying. The preparation method provided by the invention is simple and feasible to operate, and the prepared composite material can effectively remove Cu<2+> in wastewater, and is low in energy consumption and free from secondary pollution.

Description

technical field [0001] The invention relates to an imprinted polymer, in particular to a method for preparing a copper ion imprinted chitosan composite material. Background technique [0002] With the development of electronics industry and metallurgical industry, a large amount of wastewater containing copper ions is produced. When this heavy metal wastewater is discharged, even if the concentration is very small, it will cause serious harm to the environment and human body. Heavy metal poisons are not degraded by microorganisms, but can only be transformed and dispersed between different forms. And its toxicity is most serious when it exists in the ionic state, which is easily complexed by ligands or adsorbed by negatively charged colloids, and migrates around with the current. Heavy metal pollutants are difficult to control, and if they accumulate to a certain limit in water bodies, they will cause serious harm to water bodies and aquatic animal and plant systems, and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/62
Inventor 曾坚贤陈华俊欧阳振中周虎刘国清
Owner HUNAN UNIV OF SCI & TECH
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