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Application of a nitrogen heterocyclic compound functionalized ion exchange material in recovery of rhenium in wastewater

A technology of ion exchange materials and nitrogen heterocyclic compounds, which is applied in the field of resource recovery in industrial waste liquids, can solve the problems of high price of extraction agents, high requirements for operation skills, and time-consuming, and achieves that the adsorption effect is not attenuated obviously, and the preparation method The process is simple, and the effect of overcoming the complexity of the synthesis process

Active Publication Date: 2017-06-23
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The extraction agent in the solvent extraction method is expensive, and most of them are volatile, flammable and toxic substances, causing great environmental pollution; the adsorption capacity and anti-pollution performance of the ion exchange method still cannot meet the requirements; the resin synthesis in the extraction resin adsorption method is complicated and the cost is high , it is difficult and time-consuming to bond functional groups to the resin; the research and application of membrane separation technology in liquid membrane separation is still immature; the distillation process requires expensive tower equipment and high energy consumption; the classic sulfur-nickel assay The method has relatively high rhenium blank in flux nickel and requires high operating skills; the co-precipitation method requires a high rhenium content in the stock solution, and the actual application needs to be combined with other methods; the electrodialysis method has poor selectivity and high energy consumption

Method used

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  • Application of a nitrogen heterocyclic compound functionalized ion exchange material in recovery of rhenium in wastewater
  • Application of a nitrogen heterocyclic compound functionalized ion exchange material in recovery of rhenium in wastewater
  • Application of a nitrogen heterocyclic compound functionalized ion exchange material in recovery of rhenium in wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation of adsorption material

[0039]a. carry out chloromethylation to polypropylene-styrene fiber, take chloromethyl methyl ether as chloromethyl source, Lewis acid, sulfuric acid, hydrochloric acid are catalyst, the molar ratio of Lewis acid and raw material is 1.1:1, sulfuric acid The mass fraction is 80%, V hydrochloric acid: V sulfuric acid is 2:1, the reaction temperature is 50°C, and the reaction time is 12h; b. After separating the reaction product of a, add a solution with a mass fraction of α-aminopyridine to react to control the reaction The temperature is 60°C, and the reaction time is 24h; c. Finally, the reaction product is dried to a constant weight at a temperature of 50-70°C to obtain a nitrogen heterocyclic compound functionalized ion exchange material; d. Use 2mol / L sulfuric acid The sodium solution was transformed at 25°C for 1 hour before use.

[0040] (2) Application of adsorption materials

[0041] a After the rhenium-containing pollut...

Embodiment 2

[0045] (1) Preparation of adsorption material

[0046] a. Carry out chloromethylation to styrene-divinylbenzene pellet, take chloromethyl methyl ether as chloromethyl source, Lewis acid, sulfuric acid, hydrochloric acid are catalyst, the molar ratio of Lewis acid and raw material is 1.1:1 , the mass fraction of sulfuric acid is 80%, V hydrochloric acid: V sulfuric acid is 2:1, the reaction temperature is 50°C, and the reaction time is 12h; b. After separating the reaction product of a, add N-methylimidazole mass fraction to the solution of 8% for reaction , the reaction temperature is controlled at 60°C, and the reaction time is 24h; c. Finally, the reaction product is dried to a constant weight at a temperature of 50-70°C to obtain a nitrogen heterocyclic compound functionalized ion exchange material; d. L of sodium sulfate solution was transformed at 25°C for 1 hour before use.

[0047] (2) Application of adsorption materials

[0048] a After the rhenium-containing pollute...

Embodiment 3

[0052] (1) Preparation of adsorption material

[0053] a. Styrene-divinylbenzene film is carried out chloromethylation, take chloromethyl methyl ether as chloromethyl source, Lewis acid, sulfuric acid, hydrochloric acid are catalyst, the mol ratio of Lewis acid and raw material is 1.1:1, Sulfuric acid mass fraction is 80%, V hydrochloric acid: V sulfuric acid is 2:1, reaction temperature is 50 ℃, reaction time is 12h; The reaction temperature is 60°C, and the reaction time is 24h; c. Finally, the reaction product is dried to a constant weight at a temperature of 50-70°C to obtain a nitrogen heterocyclic compound functionalized ion exchange material; d. Use 2mol / L The sodium sulfate solution was transformed at 25°C for 1 hour before use.

[0054] (2) Application of adsorption materials

[0055] a After the rhenium-containing polluted acid wastewater is separated from the solid and liquid by free sedimentation. b Control the flow rate to be 8BV / h into the selective adsorption...

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Abstract

The invention provides application of a nitrogen heterocyclic compound functional ion exchange material to recover rhenium from waste water. A preparation method of the ion exchange material comprises the following steps: a chloromethylated propylene-styrene copolymer and / or a chloromethylated styrene-divinylbenzene copolymer are dipped in solution containing a nitrogen heterocyclic functional monomer to perform a replacement reaction; and a reaction product is dried to obtain the ion exchange material. The method is simple in flow, low in cost and mild in reaction conditions; the prepared ion exchange material can be applied to selective recovery of rhenium from rhenium-contained waste water, and has the characteristics of high yield and low environmental pollution; and the heterocyclic compound functional ion exchange material can be regenerated and reused to achieve low use cost.

Description

technical field [0001] The present invention relates to the application of a nitrogen heterocyclic compound functionalized ion exchange material to recover rhenium from waste water, in particular to a method for selectively recovering rhenium from nitrogen heterocyclic compound functionalized ion exchange material from smelting polluted acid wastewater and electrolyte, The invention belongs to the field of resource recovery in industrial waste liquid. Background technique [0002] Metal rhenium is a rare metal and has many special uses. In the petrochemical industry, rhenium is a catalyst for the production of gasoline and petroleum hydrogen, and it is also a good catalyst for the dehydrogenation of alcohols, the production of aldehydes, ketones and other organic synthesis industries; in the aerospace industry, it is widely used in the manufacture of artificial satellites and rockets shell. At present, the United States has used metal rhenium alloys for the production of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B61/00C22B3/42C22B7/00B01J20/26B01J20/30C02F1/42C02F101/20
CPCB01J20/26C02F1/42C02F2101/20C22B7/00C22B61/00Y02P10/20
Inventor 柴立元王庆伟蒋国民刘永丰杨志辉李青竹廖圆周成赟
Owner CENT SOUTH UNIV
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