Preparation method of three-dimensional carrageenan/sodium alginate double network structure gel spheres

A technology of sodium alginate and network structure, which is applied in the field of adsorption treatment and environmental science, can solve the problems of poor mechanical properties, difficult recycling, and difficult separation of adsorbents, and achieve easy separation, suitable for mass production, and high reaction efficiency Effect

Inactive Publication Date: 2019-04-19
SHANGHAI OCEAN UNIV
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Problems solved by technology

[0004] In order to solve the technical problems of existing adsorbents such as poor mechanical properties, fragility, difficulty in separation, and difficulty in re

Method used

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  • Preparation method of three-dimensional carrageenan/sodium alginate double network structure gel spheres
  • Preparation method of three-dimensional carrageenan/sodium alginate double network structure gel spheres

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Example Embodiment

[0034] Example

[0035] This embodiment relates to a novel three-dimensional carrageenan / sodium alginate double network structure gel ball adsorption material, which is prepared by the following steps:

[0036] (1) Weigh 1.5 g of sodium alginate and 1.5 g of carrageenan, and add them to a beaker.

[0037] (2) Measure 100ml of deionized water with a graduated cylinder and add it to the beaker to mix;

[0038] (3) Stir the above mixed solution with a stirrer for 5 hours until the solution is evenly mixed to obtain a mixture of carrageenan and sodium alginate.

[0039] (4) Weigh 5g of calcium chloride and potassium chloride, dissolve them in a 500mL volumetric flask, and make a constant volume to obtain 10g / L calcium chloride and potassium chloride solutions.

[0040] (5) Use a peristaltic pump (13# rubber tube) to drop the mixture of carrageenan and sodium alginate into K + The solution is soaked for 8 hours to obtain gel balls.

[0041] (6) Soak the gel ball into Ca 2+ The solution is 8h...

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Abstract

The invention discloses a preparation method of three-dimensional carrageenan/sodium alginate double network structure gel spheres. The method comprises the following steps: respectively taking carrageenan and sodium alginate, adding deionized water, and performing uniform mixing to form a carrageenan and sodium alginate mixture; dropwise adding the carrageenan and sodium alginate mixture into a K<+> solution, and soaking obtained drops for 4-8 h to obtain gel spheres; soaking the gel spheres in a Ca<2+> solution for 8 h, and then soaking and washing the gel spheres with deionized water to obtain hydrogel; and freeze-drying the hydrogel to obtain the target gel spheres. The product prepared in the invention has the advantages of simple preparation process, easiness in control of conditions, low cost, small rupture possibility in the swelling process, excellent adsorption property and excellent mechanical properties.

Description

technical field [0001] The invention belongs to the field of environmental science and technology, and in particular relates to a preparation method of a three-dimensional carrageenan / sodium alginate double network structure gel ball, which is applied to the fields of adsorption treatment and the like. Background technique [0002] Water is the source of life and an essential nutrient for the human body. The birth, growth, survival, evolution and healthy reproduction of all organisms on the earth cannot do without water. For organisms, water is the most important. However, the rapid development of human beings has caused serious water pollution, among which the water pollution caused by industry is the most serious. With the continuous increase of human demand for fresh water, however, the current global shortage of fresh water resources has seriously affected the ecological balance and quality of life. Water treatment methods include coagulation, neutralization, redox, ion...

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Application Information

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IPC IPC(8): C08L5/00C08L5/04C08J3/24C08J3/075B01J20/26B01J20/28B01J20/30
CPCB01J20/267B01J20/28047C08J3/075C08J3/246C08J2305/00C08J2305/04C08J2405/00C08J2405/04
Inventor 于飞崔天然杨常富白雪婷黄国琼
Owner SHANGHAI OCEAN UNIV
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