Method for degumming ramie bast fiber microbe in solid state

A technology of bast fiber and ramie bast, which is applied in the degumming field of ramie bast fiber, can solve problems such as difficult treatment, wastewater discharge restrictions, and troubled industry development, so as to improve resource utilization, reduce solid load, and wide application foreground effect

Inactive Publication Date: 2009-11-11
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, the ramie bast fiber was degummed by alkali method to obtain the fiber raw material required for textile, but the fiber will be damaged by alkali to varying degrees, resulting in a very low product yield.
In addition, a large amount of wastewater will be generated during the degumming process, which is difficult to treat and seriously pollutes the environment. Therefore, the discharge of w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The microbial degumming of embodiment 1, ramie bast fiber

[0018] Select the ramie bast part, make it into fiber bundles, add tap water at a mass ratio of 1:2.5, adjust the pH value to 7 with lime water, add microbial culture solution with a water ratio of 3% (V / V) in the total amount, and degumming at 35°C For 4 days, take out the fiber bundle for observation during this period, and treat it to be torn into a net by hand, that is, the degumming is over. After removing the degumming waste water, washing with clear water and drying, the technical fiber raw material for textile can be obtained, and the residual glue rate of the fiber raw material is only 0.2%.

[0019] The microorganism is Bacillus subtilis. The culture method of the bacterium liquid of described Bacillus subtilis (Bacillus subtilis) is: glucose 3%, 0.2% urea, 0.65% disodium hydrogen phosphate, 0.4% potassium dihydrogen phosphate, 0.1% sodium chloride, 0.12% magnesium sulfate; the balance is water, nat...

Embodiment 2

[0020] Embodiment 2, the microbiological degumming of ramie bast fiber selects the ramie bast part, makes it fiber bundle, adds tap water by mass ratio 1: 2.5, adjusts pH value 8 with lime water, adds water ratio total amount 4% (V / The microbial solution of V) was kept at 36° C. for 3 days. During this period, the fiber bundle was taken out and observed until it was torn into a net by hand, that is, the degumming was completed. After removing the degumming waste water, washing with clear water and drying, the textile fiber raw material with a residual glue rate of 0.5% is obtained and directly used for spinning.

[0021] The microorganism is Bacillus subtilis. The culture method of the bacterium liquid of described Bacillus subtilis (Bacillus subtilis) is: glucose 3%, 0.2% urea, 0.65% disodium hydrogen phosphate, 0.4% potassium dihydrogen phosphate, 0.1% sodium chloride, 0.12% magnesium sulfate; the balance is water, natural pH value, 0.1MPa / CM 2 Sterilize for 20 minutes, c...

Embodiment 3

[0022] Embodiment 3, the microbial degumming of ramie bast fiber

[0023] Select the bast part of ramie, make it into fiber bundles, add tap water at a mass ratio of 1:2.8, adjust the pH value to 6 with citric acid water, add a microbial solution with a water ratio of 5% (V / V) in the total amount, and incubate at 38°C for 2 sky. During this period, take out the fiber bundle and observe that it is torn into a net by hand, that is, the degumming is over. Remove the degumming waste water, wash and dry the raw material with a residual glue rate of 0.3% to the technical fiber raw material for textile.

[0024] The microorganism is Bacillus subtilis. The culture method of the bacterium liquid of described Bacillus subtilis (Bacillus subtilis) is: glucose 3%, 0.2% urea, 0.65% disodium hydrogen phosphate, 0.4% potassium dihydrogen phosphate, 0.1% sodium chloride, 0.12% magnesium sulfate; the balance is water, natural pH value, 0.1MPa / CM 2 Sterilize for 20 minutes, cool and inocula...

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PUM

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Abstract

The invention provides a method for degumming ramie bast fiber microbe in solid state. The method comprises the following steps: making bast of ramie into a fiber bundle; adding water into the fiber bundle according to a mass ratio of the ramie bast fiber to water being 1:1-5; adjusting the pH value of ramie bast fiber aqueous solution to between 5 and 8; introducing microbial fluid; and introducing pre-culture microbial fluid with 2 to 6 percent (V/V) of total water amount, and degumming for 1 to 4 days at a temperature of between 30 and 40 DEG C. The method fundamentally solves the problem of pollution generated by the chemical degumming method; wastewater generated by degumming does not contain any chemical medicinal residue, and reduces pollution on the environment; and the degummed textile fiber raw material can completely achieve the requirement of textile, and the rate of long fiber growth is increased by 10 percent compared with the prior art. Particularly, the method can prepare process fibers according to the spinning requirement, and can prepare spinning filament by properly prolonging the degumming time. The method reduces environmental pollution while improving resource utilization rate, and has wide application prospect.

Description

technical field [0001] The invention relates to a method for degumming ramie bast fibers, in particular to a method for degumming ramie bast fibers by selecting microorganism-Bacillus subtilis (the same below). Background technique [0002] In the past, the ramie bast fiber was degummed by alkali method to obtain the fiber raw material required for textile, but the fiber will be damaged by alkali to varying degrees, resulting in a very low product yield. In addition, a large amount of wastewater will be generated during the degumming process, which is difficult to treat and seriously pollutes the environment. Therefore, the discharge of wastewater from this process is strictly limited. [0003] The water-adding ratio of raw materials is about 1:20-30 in the degumming of the liquid microbial method developed in the past ten years. A large amount of wastewater will also be generated during the degumming process. Although the cost of sewage treatment has been reduced, it is sti...

Claims

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Application Information

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IPC IPC(8): D01C1/04C12S3/04C12R1/125
Inventor 何连芳张玉苍
Owner DALIAN POLYTECHNIC UNIVERSITY
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