Method for pretreating lignocellulose by using betaine eutectic solvent

A low eutectic solvent, lignocellulose technology, applied in the use of microorganism/enzyme cellulose treatment, cellulose raw material pulping, fiber raw material processing and other directions, can solve the problems of high toxicity, biodegradability, sensitivity, etc. Environmentally friendly, strong operability, and the effect of reducing dosage
CN110258157AActive Publication Date: 2019-09-20SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2019-09-20

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Abstract

The invention belongs to the technical field of efficient conversion and utilization of biomass resources, and discloses a method for pretreating lignocellulose by using a betaine eutectic solvent. The method comprises the following specific steps: 1) synthesizing a eutectic solvent with betaine as a hydrogen bond receptor and natural amino acid as a hydrogen bond donor; 2) employing a mixed solution of a eutectic solvent and water as a pretreatment solvent, and uniformly mixing a lignocellulose raw material with the pretreatment solvent according to a mass ratio of lignocellulose to the pretreatment solvent of 1:5-1:30, stirring the mixture at 50-140 DEG C for 2-48 h, cooling the pretreated mixture to room temperature, and finally carrying out solid-liquid separation to obtain pretreated solid-phase cellulose residues. The method not only can effectively improve the enzymolysis efficiency of lignocellulose, but also has the advantages of being environmentally friendly, renewable, easy to operate, low in viscosity, low in cost and the like.
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Description

technical field

[0001] The invention belongs to the technical field of high-efficiency transformation and utilization of biomass resources, and in particular relates to a method for pretreating lignocellulose with a betaine deep eutectic solvent. Background technique

[0002] With the increasing depletion of traditional fossil energy, human beings are facing the crisis of energy shortage and resource scarcity. At the same time, waste gas and waste water generated during the use of fossil fuels have caused serious pollution to the ecological environment. Therefore, it is a general trend to seek green, natural and renewable clean energy to replace traditional fossil fuels. The production of biofuels and various platform compounds from lignocellulose can effectively replace the increasingly scarce petroleum resources and reduce greenhouse gas emissions and environmental pollution. Cellulose, hemicellulose and lignin are the main components of lignocellulose, and they form a de...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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