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A kind of method that improves lignin to butanol, acetone, ethanol adsorption performance in abe fermentation liquid

A technology of adsorption performance and lignin, applied in fermentation, chemical instruments and methods, separation/purification of hydroxyl compounds, etc., can solve the problems of high production cost, uneven lignin performance and unsatisfactory application performance of chemical methods, and achieve The preparation cost is low, the source is extensive and convenient, and the effect of solving the problem of product inhibition

Active Publication Date: 2019-01-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lignin shows good application prospects and potential in the adsorption separation of bioalcohol, its complex structure and polydispersity lead to inhomogeneous properties of lignin, especially for unmodified lignin, its application performance Not ideal, to some extent limits its application
At present, chemical methods are mostly used to modify lignin, but the production cost of chemical methods is high, the process is relatively complicated, and may cause secondary pollution

Method used

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  • A kind of method that improves lignin to butanol, acetone, ethanol adsorption performance in abe fermentation liquid
  • A kind of method that improves lignin to butanol, acetone, ethanol adsorption performance in abe fermentation liquid
  • A kind of method that improves lignin to butanol, acetone, ethanol adsorption performance in abe fermentation liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The method comprises the steps of:

[0031] (1) Classification of water-soluble lignin and water-insoluble lignin: fully mix 30g of corn alkali lignin with 500ml of distilled water for 20h, 40KHz ultrasonic assisted treatment for 2min, fully stir, settle and separate, filter with 0.45μm filter membrane, collect the sediment and filter the lower layer The solid was vacuum dried for 20 hours to obtain 17 g of water-insoluble lignin.

[0032] (2) Classification of ketone-soluble lignin and ketone-insoluble lignin: fully mix 17g of water-insoluble lignin and 500ml of acetone solvent for 18h, 40KHz ultrasonic assisted treatment for 3min, fully stir, settle and separate, filter with 0.45μm filter membrane, collect sediment and filter After the lower layer of solids, water-insoluble ketone-insoluble lignin is obtained.

[0033] (3) The product water-insoluble ketone-insoluble lignin was vacuum-dried at 50° C. for 15 hours to obtain 6 grams, which was bottled and sealed for st...

Embodiment 2

[0035] The method comprises the steps of:

[0036] (1) Classification of water-soluble lignin and water-insoluble lignin: Mix 50g of poplar lignin with 500ml of distilled water for 16h, ultrasonically assisted treatment for 3min, stir fully, settle and separate, filter with 0.45μm filter membrane, collect sediment and filter the lower solid Vacuum drying for 24 hours yielded 35 g of water-insoluble lignin.

[0037] (2) Classification of ketone-soluble lignin and ketone-insoluble lignin: fully mix 35g of water-insoluble lignin and 500ml of methyl ethyl ketone solvent for 20h, assisted by ultrasonic treatment for 2min, stir fully, settle and separate, filter with 0.45μm filter membrane, collect sediment and filter After the lower layer of solids, water-insoluble ketone-insoluble lignin is obtained.

[0038] (3) The product water-insoluble ketone-insoluble lignin was vacuum-dried at 45° C. for 18 hours to obtain 15 g, which was bottled and sealed for storage.

Embodiment 3

[0040] The method comprises the steps of:

[0041] (1) Classification of water-soluble lignin and water-insoluble lignin: fully mix 30g of wheatgrass lignin with 1000ml of distilled water for 18h, assisted by ultrasonic treatment for 3min, stir fully, settle and separate, filter with 0.45μm filter membrane, collect sediment and filter the lower solid Vacuum drying for 48 hours yielded 18 g of water-insoluble lignin.

[0042](2) Classification of ketone-soluble lignin and ketone-insoluble lignin: fully mix 18g of water-insoluble lignin and 1000ml of ketone solvent for 15h, assisted by ultrasonic treatment for 3min, stir fully, settle and separate, filter with 0.45μm filter membrane, collect sediment and filter After the lower layer of solids, water-insoluble ketone-insoluble lignin is obtained.

[0043] (3) The product water-insoluble ketone-insoluble lignin was vacuum-dried at 40° C. for 20 hours to obtain 7 g, which was bottled and sealed for storage.

[0044] The Fourier t...

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Abstract

The invention relates to a method for improving adsorption performance of lignin to butanol, acetone and ethanol in ABE fermentation liquor. The method comprises the steps of firstly, classifying the lignin into a water-soluble part and a water-insoluble part by using water, then, reclassifying the water-insoluble lignin part into a ketone-soluble part and a ketone-insoluble part by using a ketone solvent, and applying the finally-obtained water-insoluble and ketone-insoluble parts to the adsorptive separation of the butanol, acetone and ethanol from the fermentation liquor. The dissolving classification method only involves the dissolved classification of the lignin and does not involve chemical modification, so that the method has the advantages of simple process, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of low-concentration organic matter adsorption, and specifically refers to a method for improving the adsorption performance of lignin on butanol, acetone and ethanol in ABE fermentation liquid through solvent classification. Background technique [0002] Bio-butanol is a new type of bio-liquid fuel with high energy density and high gasoline mixing degree. Because it can be used as a good organic solvent and has excellent fuel performance, its bio-fermentation production has been highly valued. Bio-butanol is produced through the traditional Acetone-Butanol-Ethanol (ABE) fermentation method, and the product has toxicity inhibition on the fermentation strain, resulting in low concentration of the final product and high energy consumption for subsequent separation. (The product of butanol prepared by biological fermentation method also contains a large amount of solvents such as acetone and a small amount of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C12P7/16C12P7/28C12P7/06C07C29/76C07C31/12C07C31/08C07C45/79C07C49/08
CPCB01J20/24B01J2220/4837C07C29/76C07C45/79C12P7/06C12P7/16C12P7/28C07C31/12C07C31/08C07C49/08Y02E50/10
Inventor 李浩张昕宇李春利王洪海常立芳
Owner HEBEI UNIV OF TECH
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