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Method for pretreating bagasse by using sodium phosphate and hydrogen peroxide

A technology of hydrogen peroxide and hydrogen peroxide solution, which is applied in the field of bioengineering, can solve the problems of corrosive machines and long pretreatment time, and achieve the effects of low load, good surface morphology, and improved enzymatic hydrolysis efficiency

Inactive Publication Date: 2020-10-30
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the pretreatment of the above-mentioned invention has adopted a strong alkali, which is easy to corrode the machine; and the above-mentioned pretreatment takes a long time

Method used

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  • Method for pretreating bagasse by using sodium phosphate and hydrogen peroxide
  • Method for pretreating bagasse by using sodium phosphate and hydrogen peroxide
  • Method for pretreating bagasse by using sodium phosphate and hydrogen peroxide

Examples

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Effect test

Embodiment 1

[0026] A method for pretreating bagasse with sodium phosphate and hydrogen peroxide, comprising the steps:

[0027] 1) After the bagasse is air-dried, it is pulverized, and the granules of 100-200 mesh are screened, sealed and dried;

[0028] 2) Weigh 5g of bagasse and put it into a 250ml Erlenmeyer flask, add 50ml of a mixed solution containing 8% sodium phosphate and 2% hydrogen peroxide, mix thoroughly, and pretreat at 121°C for 60min.

[0029] 3) After the reaction is finished, cool to room temperature immediately, then use a Buchner funnel for solid-liquid separation, wash the solid part with hot water until neutral, collect the solid residue, and dry it in an oven at 75°C to constant weight.

Embodiment 2

[0031] A method for pretreating bagasse with sodium phosphate and hydrogen peroxide, comprising the steps:

[0032] 1) After the bagasse is air-dried, it is pulverized, and the granules of 100-200 mesh are screened, sealed and dried;

[0033] 2) Weigh 5g bagasse into a 250ml Erlenmeyer flask, add 50ml of a mixed solution containing 2% sodium phosphate and 2.5% hydrogen peroxide, mix well, and pretreat at 60°C for 20min.

[0034] 3) After the reaction is completed, cool to room temperature immediately, and then use a Buchner funnel for solid-liquid separation. The solid part is washed with hot water until neutral, and the solid residue is collected and dried in an oven at 60° C. to constant weight.

Embodiment 3

[0036] A method for pretreating bagasse with sodium phosphate and hydrogen peroxide, comprising the steps:

[0037] 1) After the bagasse is air-dried, it is pulverized, and the granules of 100-200 mesh are screened, sealed and dried;

[0038] 2) Weigh 5g of bagasse into a 250ml conical flask, add 50ml of a mixed solution containing 10% sodium phosphate and 0.5% hydrogen peroxide, mix thoroughly, and pretreat at 140°C for 100min.

[0039] 3) After the reaction is finished, cool to room temperature immediately, and then use a Buchner funnel for solid-liquid separation, wash the solid part with hot water until neutral, collect the solid residue, and dry it in an oven at 80°C to constant weight.

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Abstract

The invention relates to the technical field of bioengineering, and discloses a method for pretreating bagasse by using sodium phosphate and hydrogen peroxide. The method comprises the following steps: air-drying bagasse, pulverizing, screening, sealing, drying and storing; putting the treated bagasse into a mixed solution of sodium phosphate and hydrogen peroxide for one-step or step-by-step pretreatment; after the reaction is finished, cooling to room temperature, carrying out solid-liquid separation, washing a solid part to be neutral by using hot water, collecting solid residues, and drying to constant weight; the pretreatment liquid composed of hydrogen peroxide and sodium phosphate can significantly improve the enzymolysis efficiency and the lignin removal rate, the loading capacityof hydrogen peroxide in the mixed pretreatment liquid is lower, the pH of the system cannot be obviously reduced by adding hydrogen peroxide, and the surface morphology of bagasse can be better changed.

Description

technical field [0001] The invention relates to the technical field of bioengineering, in particular to a method for pretreating bagasse with sodium phosphate and hydrogen peroxide. Background technique [0002] The detrimental impact of fossil fuels on the environment, especially greenhouse gas emissions, has led to the extensive exploration of alternatives to renewable fuels due to increased uncertainty in the sustainable supply of oil. Currently the most common renewable fuel is ethanol, which can be produced from lignocellulose through pretreatment followed by enzymatic hydrolysis and fermentation. Lignocellulosic agricultural residue is a green, cheap, abundant and carbohydrate-rich sustainable raw material, bagasse is the most common agricultural by-product in our country, in natural bagasse, cellulose is protected by lignin and hemicellulose And encapsulation, lignin can also be covalently attached to carbohydrates, and the tenacious structure of bagasse makes it dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/14C12P7/10
CPCC12P7/10C12P19/14C12P2201/00Y02E50/10
Inventor 刘泽寰林蒋海张立承龚映雪李晓珍
Owner JINAN UNIVERSITY
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