Method for recycling silver ion from sewer sludge by using novel chelate resin

A technology of chelating resin and synthesis method, which is applied in the direction of chemical instruments and methods, improvement of process efficiency, and other chemical processes, which can solve problems such as poor selectivity of single ions, achieve high mechanical strength and physical stability, and low production cost , the effect of large adsorption capacity

Inactive Publication Date: 2016-02-03
ZHEJIANG GONGSHANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing studies have shown that chloromethylated polystyrene alkoxycarbonyl thiourea resin has a strong effect on Ag + It has a good adsorption effect, and its adsorption capacity can reach 4.48mmol / g, but its selectivity to single ions is poor

Method used

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  • Method for recycling silver ion from sewer sludge by using novel chelate resin
  • Method for recycling silver ion from sewer sludge by using novel chelate resin
  • Method for recycling silver ion from sewer sludge by using novel chelate resin

Examples

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Embodiment 1

[0045] 1) Accurately weigh 60.0 mg of chlorine balls, transfer them into a 100 mL three-neck bottle, add 40 mL of N,N-dimethylformamide (DMF) and soak overnight until the chlorine balls swell.

[0046] 2), add 2-amino-6-picoline as a ligand to the result of step 1), add sodium as a catalyst under the protection of nitrogen and keep stirring at a reaction temperature of 80°C (rotating speed is 300r / min ) reacted for 10 hours, wherein, 2-amino-6-picoline and -CH on the chlorine ball 2 The ratio of Cl to substance is 4:1;

[0047]3), after the reaction is finished, filter the product obtained in step 2) to obtain a filter cake, and soak and wash the obtained filter cake with N,N-dimethylformamide (DMF) for 3 to 4 times (each dosage is 40ml) , then wash with distilled water, absolute ethanol, acetone, ether, distilled water successively, repeat 4 times (each time, the consumption of distilled water is 40ml, the consumption of acetone is 40ml, the consumption of ether is 40ml, the...

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Abstract

The invention discloses a method for recycling silver ions from sewer sludge by using novel chelate resin. The synthesis method of chelate resin comprises the following steps: 1), soaking micrococcus chlorine into N,N-dimethylformamide as a reaction solvent till the micrococcus chlorine is sufficiently swelled; 2) adding 2-amino-6-methylpyridine as ligand and sodium as a catalyst into a product obtained in the step 1), in the presence of nitrogen, stirring at 80 DEGC to react for 10 hours, wherein the amount ratio of 2-amino-4-methylpyridine to -CH2Cl in micrococcus chlorine is 4:1; and 3) filtering the product obtained in the step 2), thereby obtaining a filtrate cake, firstly, soaking the filtrate cake in a reaction solvent, washing until a washing liquid is colorless, washing with distilled water, washing for times with absolute ethyl alcohol, acetone, diethyl ether and distilled water, and performing vacuum drying at 50 DEG C, thereby obtaining novel chelate resin. The method has the characteristics of good selective adsorption of silver ions in sewer sludge, good adsorption property, cyclic utilization, and the like.

Description

technical field [0001] The invention relates to a synthesis method and performance research of a chelating adsorption functional resin, in particular to a novel chelating resin capable of selectively adsorbing silver ions in ditch mud, having good adsorption performance and being reusable, a synthesis method and an application thereof. Background technique [0002] When we mention silver, the first thing we think of is "gold and silver jewelry". What we don't know is that silver is also a very common heavy metal, and silver pollution is also very common in daily life, so recycling silver can not only save resources, but also solve environmental problems , and can achieve good economic benefits, it is the priority research direction in the field of environmental protection in the world today. [0003] Ditch mud contains silver, and there are also a small amount of other heavy metals such as lead and zinc; silver is currently active in various fields as a high-quality element ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F12/08C08F8/32B01J20/26B01J20/30C22B7/00C22B11/00
CPCY02P10/20
Inventor 谢湖均虞亲雅闵敏熊春华吴啸川
Owner ZHEJIANG GONGSHANG UNIVERSITY
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