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Method for preparing konjac glucomannan adsorbing material

A technology of konjac glucomannan and adsorption material, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as poor water resistance, and achieve good regeneration performance, simple operation, and easy method. row effect

Inactive Publication Date: 2010-11-17
湖北李泽园食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the poor water resistance of konjac glucomannan has become the main reason for limiting its industrial application.

Method used

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  • Method for preparing konjac glucomannan adsorbing material
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  • Method for preparing konjac glucomannan adsorbing material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A kind of preparation method of konjac glucomannan adsorption material, its steps are:

[0036] A. Raw material preparation: adopt the method of Chinese patent CN1328062A to prepare high-purity konjac glucomannan;

[0037] B. Swelling: Weigh 10.00g of high-purity konjac glucomannan and dissolve it in 180ml of water. After swelling for 10 minutes, add dimethyl sulfoxide to a concentration of 10v / v%, and stir at a high speed (1000rpm) at a swelling temperature of 60°C After 140 minutes, after fully swelling, high-concentration konjac gel can be obtained;

[0038]C, granulation: take the high-concentration konjac gel obtained in step B, extrude it to form a filament with a diameter of 0.5 to 1.0 mm, just completely immerse it in a 95v / v% dimethyl sulfoxide solution, and place it in boiling water bath, take it out after 30 minutes, and cut into particles with diameter-to-height ratio of 0.5-1.0 mm: 0.5-1.0 mm, and put them in a 53°C incubator to dry to constant weight;

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Embodiment 2

[0041] A kind of preparation method of konjac glucomannan adsorption material, its steps are:

[0042] Weigh 8.00 g of the high-purity konjac glucomannan prepared in step A of Example 1 and dissolve it in 180 ml of water. After swelling for 10 minutes, add dimethyl sulfoxide to a concentration of 9v / v%. When the swelling temperature is 40°C, Stir at high speed (3000rpm) for 120min, after fully swelling, you can get high-concentration konjac gel; extrude this gel to form a filament with a diameter of 0.5-1.0mm, just completely immersed in 70v / v% dimethyl methoxide Place in a boiling water bath in the sulfone solution, take it out after 30 minutes, and cut into particles with a diameter-to-height ratio of 0.5-1.0 mm: 0.5-1.0 mm; put it in a 40°C incubator and dry to constant weight; put the obtained material in vacuum drying spare in the device.

Embodiment 3

[0044] A kind of preparation method of konjac glucomannan adsorption material, its steps are:

[0045] Weigh 12.00 g of the high-purity konjac glucomannan prepared in step A of Example 1 and dissolve it in 180 ml of water. After swelling for 10 minutes, add dimethyl sulfoxide to a concentration of 7v / v%. When the swelling temperature is 50°C, Stir at high speed (4000rpm) for 90 minutes, and after fully swelling, high-concentration konjac gel can be obtained. Squeeze the gel to form a filament with a diameter of 0.5-1.0mm, just immerse it in 80v / v% dimethyl sulfoxide solution, put it in a boiling water bath, take it out after 30min, and cut it into a diameter-to-height ratio of 0.5 ~1.0mm: particles of 0.5~1.0mm; placed in a constant temperature oven at 60°C and dried until constant weight; the obtained material was placed in a vacuum desiccator for later use.

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Abstract

The invention discloses a method for preparing a konjac glucomannan adsorbing material. Water-resistant konjac glucomannan which keeps acetyl functional groups is prepared by a high concentration swelling method. The method comprises the following steps of: purifying refined konjac powder to obtain high-purity konjac glucomannan; swelling the high-purity konjac glucomannan in water for 10 minutes, adding a small amount of dimethyl sulfoxide and fully swelling at the temperature of between 40 and 70 DEG C; extruding the fully swelled konjac glucomannan after taking out to form filaments with the diameter of 0.5 to 1.0mm; adding the filaments into 70 to 95 volume percent solution of dimethyl sulfoxide, and putting the solution into a boiling water bath for 30 minutes; and shearing the product after taking out to form particles with the diameter of 0.5 to 1.0mm and the height of 0.5 to 1.0mm, and drying the particles to constant weight. Compared with the chemical modification method, the method has the advantages of simple preparation process and low energy consumption; and the obtained product has high water resistance, can be used as an adsorbing material and has good application prospect in the aspect of dyeing and finishing wastewater.

Description

technical field [0001] The invention relates to a preparation method of an adsorption material using natural polymer materials as raw materials, in particular to a preparation method of a konjac glucomannan adsorption material. The invention obtains a retention An environmentally friendly adsorption material with acetyl functional groups is mainly used for the purification of dye wastewater through solid-liquid adsorption separation. Background technique [0002] With the development of the global economy, people's quality of life is getting higher and higher, and the problem of water pollution is also becoming more and more serious. my country's Water Pollution Prevention and Control Law has a clear definition of "water pollution", that is, the intervention of a certain substance in a water body leads to changes in its chemical, physical, biological or radioactive characteristics, thereby affecting the effective use of water and endangering the quality of water. The phenome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 汪超吕文平姜发堂李冬生胡建中张郁方祖成
Owner 湖北李泽园食品有限公司
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