Functional resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt and preparation method thereof

A technology of alkali metal salt and dimercapto, which is applied in the field of heavy metal industrial wastewater treatment and functional materials, can solve the problems that metal adsorbents cannot be reused, the adsorption capacity of heavy metals is small, and the use cost is high, so as to achieve enhanced synergy, large adsorption capacity, The effect of increased range of motion

Inactive Publication Date: 2013-05-08
JIENTE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the disadvantages of metal adsorbents in the prior art that cannot be reused, has small adsorption capacity for heavy metals, high use cost, and water pollution, and aims to provide a method that has large adsorption capacity for heavy metal ions, strong adsorption capacity, and a simple regeneration method. , Reusable effect is good, non-toxic to water, low-cost functional base resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt; this resin can simultaneously remove and enrich copper in wastewater , lead, nickel, chromium, mercury and other heavy metal ions, especially suitable for advanced treatment of water containing low concentrations of heavy metal ions

Method used

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  • Functional resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt and preparation method thereof
  • Functional resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt and preparation method thereof
  • Functional resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 50.0g of chlorine balls and 100mL of anhydrous toluene into a 250mL three-necked flask, install a stirrer and a reflux condenser, raise the temperature of the oil bath to 90°C while stirring, add 25mL of ethylenediamine dropwise, drop in half an hour After the addition is complete, keep the reaction temperature at 70°C after the dropwise addition. After 8 hours of reaction, cool to room temperature, filter with suction, wash with 150mL 1mol / L NaOH solution three times, wash with water until neutral, then wash with absolute ethanol, and vacuum dry , weighing 56.0g, to obtain grafted ethylenediamine resin, and its weak base exchange capacity was measured to be 1.81mmol / g dry resin, referred to as PE-NH 2 .

[0039] Add 50.0gPE-NH to a 250mL three-necked flask 2 , 100mL anhydrous tetrahydrofuran, 25.0g anhydrous sodium bicarbonate powder, install a stirrer and a reflux condenser, while stirring, cool the oil bath temperature to -2°C, then add anhydrous tetrahydrofuran...

Embodiment 2

[0042] Add 50.0g of chlorine bulbs and 100mL of absolute ethanol to a 250mL three-necked flask, install a stirrer and a reflux condenser, raise the temperature of the oil bath to 60°C while stirring, add 25mL of ethylenediamine dropwise, drop in half an hour After the addition, keep the reaction temperature at 70°C after the dropwise addition. After reacting for 8 hours, cool to room temperature, filter with suction, wash with 150mL 1mol / L NaOH solution three times, wash with water until neutral, then wash with absolute ethanol, and dry in vacuum. Weigh 55.0g to obtain grafted ethylenediamine matrix, measure its weak base exchange capacity of 1.78mmol / g dry resin, referred to as PE-NH2.

[0043] Add 50.0gPE-NH to a 250mL three-necked flask 2 , 100mL of anhydrous acetone, 25g of anhydrous sodium carbonate powder, install a stirrer and a reflux condenser, while stirring, cool the temperature of the oil bath to 0 ° C, dropwise add a mixture of anhydrous tetrahydrofuran and cyanur...

Embodiment 3

[0046] Add 50.0g of chlorine bulbs and 100mL of anhydrous N,N-dimethylformamide into a 250mL three-necked flask, install a stirrer and a reflux condenser, raise the temperature of the oil bath to 90°C while stirring, and add 25mL of Add ethylenediamine dropwise within half an hour. After the dropwise addition, maintain the reaction temperature at 70°C. After reacting for 8 hours, cool to room temperature, filter with suction, wash with 150mL1mol / L NaOH solution three times, wash with water until neutral, and then use After washing with absolute ethanol and vacuum drying, weigh 56.4g to obtain the grafted ethylenediamine matrix, and measure its weak base exchange capacity of 1.84mmol / g dry resin, referred to as PE-NH 2 .

[0047] Add 50.0gPE-NH to a 250mL three-necked flask 2 , 100mL of anhydrous tetrahydrofuran, 25.0g of anhydrous sodium carbonate powder, install a stirrer and a reflux condenser, while stirring, cool the oil bath temperature to 5 ° C, dropwise add a mixture o...

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Abstract

The invention discloses functional resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt and a preparation method thereof. The method comprises the steps of dripping ethanediamine into chloromethylated bead mixture swelled by a solvent to carry out nucleophilic substitution to obtain the resin containing active amino; carrying out substituted grafting reaction on the obtained resin containing the active amino and cyanuric chloride to obtain the resin grafted with the cyanuric chloride; carrying out sulfhydrylation reaction on the prepared resin grafted with the cyanuric chloride in water solution of Na2S and/or NaSH, and then alkalifying with aqueous alkali after the sulfhydrylation reaction is finished. The method is simple in processing equipment, and convenient and simple to operate; and the sulfydryl resin prepared by the method is high in sulfydryl content, large in adsorbing capacity on heavy metal ions, strong in adsorption capacity, strong in regeneration capacity, good in repeated use effect, free of pollution, and low in cost, can remove and gather metal ions of heavy metals such as copper, lead, nickel, chromium, mercury and the like in waste water at the same time, and especially has good absorption efficiency when the concentration of the heavy metals in the waste water is low.

Description

technical field [0001] The invention relates to a resin containing 4,6-dimercapto-1,3,5-triazine alkali metal salt functional group and a preparation method thereof, belonging to the technical field of functional materials and heavy metal industrial wastewater treatment. Background technique [0002] With the development of industry and the improvement of human living standards, people's awareness of environmental protection is constantly increasing. However, various factories, thermal power plants, incinerators, garbage disposal sites, and smelting enterprises produce a large amount of waste water containing heavy metals. If these heavy metals cannot be treated properly and effectively, and flow into nature, they will cause serious pollution to the environment, and will also affect the safety of drinking water, posing a great threat to human beings. [0003] In order to remove heavy metals contained in water, various heavy metal removers, or resins, have been developed. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08F8/34B01J20/26B01J20/30C02F1/28C02F1/62
Inventor 李高翔曹永芳曹年平
Owner JIENTE NEW MATERIAL TECH CO LTD
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