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Preparation method of amino functionalized micron gold and anion exchange resin composite material

A technology of amino functionalization and resin exchange, which is applied in anion exchange, ion exchange, chemical instruments and methods, etc. It can solve the problems of no clear public report on extraction technology, shortened service life, difficult resin regeneration, etc., and achieve high yield High, strong anti-pollution ability, easy regeneration effect

Inactive Publication Date: 2011-11-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, proteins, liposomes, sugars and solid suspended particles in the fermentation broth seriously pollute common resins, resulting in serious problems such as serious attenuation of extraction efficiency, difficulty in resin regeneration, and shortened service life.
In addition, the ion exchange technology disclosed in the existing patents is aimed at extracting a certain organic acid product in the fermentation broth, but there is no clear public report on the extraction technology of volatile organic mixed acids in the fermentation broth

Method used

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  • Preparation method of amino functionalized micron gold and anion exchange resin composite material
  • Preparation method of amino functionalized micron gold and anion exchange resin composite material
  • Preparation method of amino functionalized micron gold and anion exchange resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 1 g of chloroauric acid in 45 g of deionized water, then put 8 g of hydroxyl type 201×7 strong basic anion exchange resin into standstill for 24 hours, take out the resin and wash it repeatedly with deionized water until neutral pH=7; Fully dissolve 6 g of sodium in 50 g of deionized water, then put the resin in, control the temperature at 25 ° C for 11 hours, take out the resin, wash it alternately with 100 g of deionized water and 50 g of absolute ethanol for 5 times, and wash it with 11 After natural soaking in g aminoethanethiol for 5 hours, the resin was taken out and washed (5 times) with absolute ethanol (50 g) to obtain the composite material of amino-functionalized micron gold and strongly basic anion exchange resin. figure 1 It is the field emission scanning electron micrograph of the obtained composite material, as can be seen from the figure, there are gold particles with a size in the micron range on the resin surface; figure 2 It is the X-ray dif...

Embodiment 2

[0020] Take 1.5 g of potassium chloroaurate and dissolve it in 40 g of deionized water, then put 6 g of D201 strongly basic anion exchange resin and let it stand for 24 hours, then take out the resin and wash it repeatedly with deionized water until neutral pH=7; take hydrazine hydrate 6 g fully dissolved in 50 g of deionized water, then put the resin in, and react at a controlled temperature of 15°C for 10.5 hours, then take out the resin, wash it alternately with 100 g of deionized water and 50 g of absolute ethanol for 5 times, and wash it with 11 g of amino After naturally soaking in thiophenol for 8 hours, the resin was taken out and washed (5 times) with absolute ethanol (50 g) to obtain the composite material of amino-functionalized micron gold and strongly basic anion exchange resin.

Embodiment 3

[0022] Take 2 g of sodium chloroaurate and dissolve it in 50 g of deionized water, then put 10 g of 201×2 strong basic anion exchange resin into it and let it stand for 24 hours, then take out the resin and wash it repeatedly with deionized water until neutral pH=7; Dissolve 3 g of ethylene glycol (average molecular weight 12,000) in 50 g of deionized water, then put the resin in, control the temperature at 15°C and react for 10.5 hours, take out the resin, and alternately use 100 g of deionized water and 50 g of absolute ethanol After washing 5 times, soak naturally with 11 g aminothiophenol for 8 hours, take out the resin and wash it (5 times) with absolute ethanol (50 g) to obtain the product amino-functionalized micron gold and strong basic anion exchange resin composite material.

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Abstract

The invention relates to a method for preparing an amino-functionalized micron gold and anion exchange resin composite material and belongs to the technical field of biological chemical separation. The method comprises the following steps of: firstly, absorbing water-soluble chlorine and gold anions to an anion exchange resin surface; secondly, restoring by using a chemical reducing agent to prepare a micron gold and anion exchange resin composite material; and finally, modifying the surfaces of gold micron particles by using an amino sulfydryl bifunctional reagent to obtain the amino-functionalized micron gold and anion exchange resin composite material. By the method, the amino-functionalized micron gold and anion exchange resin composite material can be efficiently obtained, and the amino-functionalized micron gold and anion exchange resin composite material can be applied to extraction of short-carbon chain volatile organic mixed acids in fermentation liquid.

Description

[0001] technical field [0002] The invention belongs to the technical field of biochemical separation, and in particular relates to a method for preparing amino-functionalized micron gold and anion exchange resin composite materials for extracting volatile organic mixed acids in fermentation liquid. Background technique [0003] The process of urban sewage treatment will produce a large amount of residual sludge, which will bring a heavy burden to the environment. There are three main ways to treat sludge traditionally: incineration, landfill and agricultural use. The economic cost of incineration treatment is relatively high, and landfill and agricultural treatment will bring secondary pollution to the environment. The use of sludge for anaerobic fermentation to produce organic acids can solve the disadvantages of traditional sludge treatment methods, turn waste into treasure, and provide a new way for the in-depth and sustainable development of urban sewage treatment. It...

Claims

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Application Information

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IPC IPC(8): B01J41/12B01J41/14
Inventor 刘雪锋王晶方云刘和
Owner JIANGNAN UNIV
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