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Method for producing acetone, ethanol and butanol by taking straw as raw material

A technology of straw and acetone, which is applied in the field of butanol, ethanol, and acetone fermentation by fermentation, can solve problems such as complex detoxification process, and achieve the effect of avoiding detoxification process and reducing production cost.

Active Publication Date: 2013-01-16
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that a complex detoxification process is required for ABE fermentation after the pretreatment of straw raw materials. A class of cheap additives is added to the straw hydrolyzate to quickly ferment ABE to simplify the production process and reduce ABE production. cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The treatment of fresh corn stalks and the preparation of fermentation medium were the same as those in Control Example 1.

[0044] Add 5ml of microbial seed solution to the fermentation medium, add 0.5ml of vitamin mixture at the same time, culture at 37°C for 24 hours, add 0.01g of FeSO 4 . 7H 2 After 0, continue static fermentation 48h, ethanol content 0.79g / L in gas chromatographic determination fermented liquid, acetone content 3.71g / L, butanol content 6.59g / L, total solvent content 11.09g / L.

Embodiment 2

[0046] The treatment of fresh wheat straw and the preparation of fermentation medium were the same as those in Control Example 1.

[0047] Add 5ml of microbial seed solution to the fermentation medium, add 0.5ml of vitamin mixture at the same time, culture at 37°C for 24 hours, add 0.02g of FeSO 4 . 7H 2 After 0, continue static fermentation 48h, ethanol content 0.66g / L in gas chromatographic determination fermented liquid, acetone content 3.64g / L, butanol content 6.12g / L, total solvent content 10.42g / L.

Embodiment 3

[0049] The treatment of fresh rice straw and the preparation of fermentation medium were the same as those in Control Example 1.

[0050] Add 5ml of microbial seed solution to the fermentation medium, add 0.5ml of vitamin mixture at the same time, culture at 37°C for 24 hours, add 0.03g of FeSO 4 . 7H 2 Continue static fermentation 48h after 0, ethanol content 0.72g / L in the fermented liquid, acetone content 3.75g / L, butanol content 6.21g / L, total solvent content 10.68g / L.

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PUM

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Abstract

The invention relates to a method for producing acetone, ethanol and butanol by taking the straw as the raw material, which is characterized in that: FeSO4.7H2O is added to the straw as the raw material. The process comprises the pretreatment of the straw, the enzymatic hydrolysis of the straw, the preparation of the fermentation medium, the preparation of acetone, ethanol and butanol fermentation microorganism seed liquid and fermentation. Because the straw is used for producing the acetone, ethanol and butanol, and the FeSO4.7H2O is added singly to promote the fermentation, the solvent yield and the production efficiency are improved, the production cost is reduced, and the production process is simplified.

Description

technical field [0001] The invention relates to a method for fermenting and producing acetone, ethanol and butanol by using straw as raw material, in particular to adding FeSO in the fermentation process 4 . 7H 2 O to prepare acetone, ethanol, butanol method. Background technique [0002] Acetone-ethanol-butanol (ABE) fermentation is a traditional bulk fermentation industry, and was once the second largest fermentation process in the world after alcohol fermentation. From the early days of the founding of the People's Republic of my country, corn, molasses, sorghum, etc. were used for industrial production of ABE fermentation, and a stable fermentation process was also formed. Due to the development of the petrochemical industry, ABE fermentation has gradually declined. However, with the depletion of petrochemical resources and the increasing environmental problems such as the greenhouse effect, the use of renewable resources to produce chemical raw materials and energy ...

Claims

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Application Information

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IPC IPC(8): C12P7/36C12P7/10C12P7/16C12R1/145
CPCY02E50/16Y02E50/10
Inventor 赵海靳艳玲方扬郜晓峰
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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