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Process for extracting glucose and/or xylose for preparing ethanol by utilizing straw plants

A technology of plant extraction and glucose, applied in the field of glucose and/or xylose, can solve problems such as environmental pollution, pollution treatment difficulties, pollution, etc., and achieve the effect of improving sensitivity

Inactive Publication Date: 2005-06-22
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the pollution in the separation process, the difficulty of pollution treatment, and the high cost, many paper mills were forced to stop production, and a large amount of straw was discarded, which also caused environmental pollution ("Plant Fiber Chemistry" China Light Industry Press 2001.1 third edition)

Method used

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  • Process for extracting glucose and/or xylose for preparing ethanol by utilizing straw plants
  • Process for extracting glucose and/or xylose for preparing ethanol by utilizing straw plants
  • Process for extracting glucose and/or xylose for preparing ethanol by utilizing straw plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add water 600g, H 2 SO 4 6g and rice straw 80g (moisture content 10%, the following are the same), then heat up to 90~100 ℃ of constant temperature for 1 hour; The amount of sugar obtained (mainly xylose) is 11g. The sugar solution is used in fermentation to make ethanol.

Embodiment 2

[0027] Add water 600g, H 2 SO 4 5g, 1g of HCl and 80g of straw, and then heated up to 90-100°C for 1 hour at a constant temperature; the amount of sugar obtained (mainly xylose) was 12.5g. The sugar solution is used in fermentation to make ethanol.

Embodiment 3

[0029] Add water 600g, H 2 SO 4 4g, HCl 2g and rice straw 80g, and then heated up to 90-100°C for 1 hour at a constant temperature; the amount of sugar obtained (mainly xylose) was 13.5g. The sugar solution is used in fermentation to make ethanol.

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Abstract

The invention relates to a process for extracting glucose and / or xylose for preparing ethanol by utilizing straw plants which comprises, at room temperature, mixing stalk with diluted acid solution by the weight ratio of 1 : 4.5-8.5, elevating temperature to 90-100 deg. C, keeping constant temperature, quickly dissolving the hemicellulose in the stalk, abstracting glucose solution, preparing ethanol from glucose solution fermentation. The glucose solution can be charged by non-dissolved cellulose in the cellulose hydrolysis glucose solution. The process can increase the sensitivity of fabric in the stalks to cellulose.

Description

technical field [0001] The invention belongs to the field of preparing ethanol, phenol, toluene and the like by utilizing straw plants, and in particular relates to a method for extracting glucose and / or xylose for ethanol production by using straw plants such as straw. Background technique [0002] The main chemical components in straw plants are lignin, hemicellulose, and cellulose (page 6 of the third edition of plant fiber chemistry; China Economic Industry Press) to degrade hemicellulose and cellulose into xylose and glucose-based The conversion of sugars (which can be used to prepare liquid fuel ethanol) and lignin into chemical raw materials and energy is one of the ideal ways to use straw plants with high value. [0003] Domestic use of straw, wheat straw, reed and other straw plants to extract fiber paper has a history of many years. Due to the pollution in the separation process, the difficulty of pollution treatment, and the high cost, many paper mills were force...

Claims

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Application Information

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IPC IPC(8): C07H3/00C13K1/02
Inventor 杨正宇赵金生杨国仪都占魁付其丽
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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