Method for refining sugar by rapidly degrading reed fibers

A reed fiber, rapid degradation technology, applied in the direction of fermentation, etc., can solve the problems of unobvious pretreatment effect, difficult degradation, and not yet seen, and achieve the effect of reducing irradiation cost, increasing irradiation amount, and reducing consumption

Inactive Publication Date: 2012-10-03
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering that the lignocellulose content of reed fiber is higher than that of ordinary straw, the degradation is more difficult, and the pretreatment effect is not obvious. So far, no sugar production process using reed fiber has been seen.

Method used

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  • Method for refining sugar by rapidly degrading reed fibers
  • Method for refining sugar by rapidly degrading reed fibers
  • Method for refining sugar by rapidly degrading reed fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A method for fast degrading sugar production of reed fiber of the present invention comprises the following steps:

[0030] 1. Raw material preparation: prepare the reed fiber for mechanical coarse crushing, and then heat-press it to make it with a density of 0.8 g / cm 3 ~0.9 g / cm 3 reed fiber bricks;

[0031] 2. Irradiation treatment: the above-mentioned reed fiber bricks were irradiated with a dose of 450 kGy 60 Co-γ was irradiated once, crushed into 20-mesh coarse powder, and the dose rate was 20kGy / h during the first irradiation treatment (the electron microscope scanning images of the fiber surface before and after the first irradiation treatment are shown in Fig. figure 1 shown in the A and B diagrams); then the coarse powder was irradiated with a dose of 350 kGy 60 Co-γ is irradiated twice and crushed into a fine powder with a particle size of 200 mesh (density 0.1-0.3 g / cm 3 ), the dose rate during the second irradiation treatment was 20kGy / h (the electron mi...

Embodiment 2

[0036] A method for fast degrading sugar production of reed fiber of the present invention comprises the following steps:

[0037] 1. Raw material preparation: prepare the reed fiber for mechanical coarse crushing, and then heat-press it to make it with a density of 0.8 g / cm 3 ~0.9 g / cm 3 reed fiber bricks;

[0038] 2. Irradiation treatment: the above-mentioned reed fiber bricks were irradiated with a dose of 500 kGy 60 Co-γ was irradiated once, crushed into 20-mesh coarse powder, and the dose rate was 30kGy / h during the first irradiation treatment (the electron microscope scanning images of the fiber surface before and after the first irradiation treatment are shown in Fig. Figure 5 shown in Figure E and Figure F); then the coarse powder is irradiated with a dose of 300 kGy 60 Co-γ was irradiated twice and crushed into a fine powder with a particle size of 200 mesh (density 0.2 g / cm 3 ), the dose rate during the second irradiation treatment was 15kGy / h (the electron micr...

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Abstract

The invention belongs to a method for refining sugar by degrading lignin fibers, and in particular discloses a method for refining the sugar by rapidly degrading reed fibers. The method comprises the following steps of: preparing the reed fibers and crushing the reed fibers by using a machine first; then performing primary irradiation on the crushed reed fibers by using 60Co-gamma with the irradiation dose of 400 to 500kGy for crushing the crushed reed fibers into coarse powder of 20 to 40 meshes; performing secondary irradiation on the coarse powder by using the 60Co-gamma with the irradiation dose of 300 to 400kGy for crushing the coarse powder into fine powder of 40 to 200 meshes; adding the fine powder into sulfuric acid solution to prepare the mixed solution with 10 to 20 percent substrate; adding the mixed solution into a high-pressure kettle; reacting for 30 to 60 minutes at the temperature of 124 to 130 DEG C; cooling and filtering; and collecting a filtrate. The method for preparing the sugar of the invention has the advantages of simple technical process, high reed fiber degradation speed, high hydrolysis efficiency, low environmental pollution, low cost and the like.

Description

technical field [0001] The invention relates to the field of cellulose hydrolysis for sugar production, in particular to a method for degrading lignin fiber for sugar production. Background technique [0002] With the massive reduction of fossil fuels, alternative new energy sources such as biomass have received major concerns. Natural cellulose and hemicellulose in lignocellulosic raw materials are polysaccharides, which can be hydrolyzed to produce sugars such as glucose and xylose, which can be converted into ethanol, organic acids and other compounds that can replace petrochemical energy products after fermentation. Therefore, using biomass raw materials for sugar production is a prerequisite for obtaining biomass energy. [0003] At present, 90% of the total global biomass is lignocellulosic, about 200×10 9 Tons, if the biomass raw material with huge output is properly utilized, it can not only effectively process and recycle waste resources, but also provide environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14
Inventor 熊兴耀王克勤苏小军
Owner HUNAN AGRICULTURAL UNIV
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