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Adsorption material based on modified sodium alginate microspheres and preparation method and application of material

A technology of sodium alginate and adsorption material, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of difficult recycling, poor mechanical strength, difficult granulation, etc., and achieve a simple preparation process. , Solve the effect of poor mechanical strength, good stability and reusability

Active Publication Date: 2019-08-27
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of adsorption material based on modified sodium alginate microspheres, which preferably solves the problems and / or defects of traditional cesium ion adsorbents such as poor mechanical strength, difficult granulation and difficult recycling , has a good prospect of high-value utilization

Method used

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  • Adsorption material based on modified sodium alginate microspheres and preparation method and application of material
  • Adsorption material based on modified sodium alginate microspheres and preparation method and application of material
  • Adsorption material based on modified sodium alginate microspheres and preparation method and application of material

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Embodiment 1

[0029] An adsorption material based on modified sodium alginate microspheres and a preparation method thereof, comprising the following steps:

[0030] Step 1: Dissolve 1g of sodium alginate and 1g of polyvinyl alcohol in 25mL of deionized water, heat at 80°C, stir well, then add calcium chloride boric acid solution dropwise (the mass concentration of boric acid solution is 5%, chlorine Gel pellets are formed in the mass concentration of calcium chloride (10%);

[0031] Step 2: Wash the gel balls with deionized water at room temperature, add 25 mL of 1% KH550 aqueous solution, and stir for 12 hours;

[0032] Step 3: Disperse the above product in 25mL of toluene, add 1g of 1,3-propane sultone and react for 12h;

[0033] Step 4: After the reaction, rinse and dry with toluene, ethanol and deionized water in sequence to obtain the modified sodium alginate microsphere adsorption material.

Embodiment 2

[0035] An adsorption material based on modified sodium alginate microspheres and a preparation method thereof, comprising the following steps:

[0036] Step 1: Dissolve 1g of sodium alginate and 1.5g of polyvinyl alcohol in 30mL of deionized water by heating at 80°C, stir well, then add calcium chloride boric acid solution dropwise (mass concentration of boric acid solution is 2%, chlorine Gel pellets are formed in the mass concentration of calcium chloride (5%);

[0037] Step 2: Wash the gel balls with deionized water at room temperature, add 30 mL of 4% KH550 aqueous solution, and stir for 12 hours;

[0038] Step 3: Disperse the above product in 25mL of toluene, add 1g of 1,3-propane sultone and react for 12h;

[0039] Step 4: After the reaction, rinse and dry with toluene, ethanol and deionized water in sequence to obtain the modified sodium alginate microsphere adsorption material.

Embodiment 3

[0041] An adsorption material based on modified sodium alginate microspheres and a preparation method thereof, comprising the following steps:

[0042] Step 1: Dissolve 1g of sodium alginate and 8g of polyvinyl alcohol in 30mL of deionized water by heating at 80°C, stir well, then add calcium chloride boric acid solution dropwise (mass concentration of boric acid solution is 1%, chlorination The mass concentration of calcium is 1%) to form gel beads;

[0043] Step 2: Wash the gel balls with deionized water at room temperature, add 30 mL of 4% A171 aqueous solution, and stir for 20 hours;

[0044] Step 3: Disperse the above product in 25mL of toluene, add 5g of 1,3-propane sultone and react for 20h;

[0045] Step 4: After the reaction, rinse and dry with toluene, ethanol and deionized water in sequence to obtain the modified sodium alginate microsphere adsorption material.

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Abstract

The invention discloses an adsorption material based on modified sodium alginate microspheres and a preparation method and application of the material. Sodium alginate and polyvinyl alcohol are dissolved in deionized water and then added dropwise into a boric acid solution containing calcium chloride to forming a gel pellet; the gel pellet is washed and added into an aqueous solution of a silane coupling agent; a product obtained after a reaction is dispersed in toluene, and 1,3-propane sultone is added for a reaction; after the reaction is completed, an obtained product is sequentially washedwith toluene, ethanol and deionized water and then dried to obtain the adsorbent material of the modified alginate microspheres. The provided adsorbent material of the modified sodium alginate microspheres not only has a simple preparation process, a low cost and a stable structure but also has high adsorption performance and recycling performance for cesium, and can be widely applied to comprehensive development and utilization of salt lake brine and geothermal water resources.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to an adsorption material based on sulfonic acid group-modified sodium alginate microspheres, a preparation method and application thereof. Background technique [0002] Cesium is an important rare alkali metal. Cesium and its compounds are widely used in modern technology fields such as aerospace, electronic devices, and biomedicine. There are two main sources of cesium, one is solid minerals such as lepidolite and cesium garnet, and the other is liquid cesium resources such as salt lake brine, geothermal water, and underground brine. Due to the complexity of the development of solid minerals and the limited resources, people have gradually turned their attention to liquid minerals with abundant reserves, simple extraction process and low cost. The separation and extraction of cesium resources from salt lake brine can not only promote the comprehensive development and util...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/24B01J20/28019C02F1/286C02F2101/10C02F2103/007
Inventor 邓天龙乔文艳胡佳音陈尚清张丕正马胤昭
Owner TIANJIN UNIV OF SCI & TECH
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