Analysis method for pretreatment mechanism of wood fiber deep eutectic solvent
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A deep eutectic solvent and wood fiber technology, which is applied in fiber raw material processing, computer material science, instruments, etc., can solve problems such as mechanism research that has not been reported yet, and achieve the effect of simple operation method and universal applicability
Inactive Publication Date: 2020-08-25
QINGDAO UNIV OF SCI & TECH
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So far, no mechanistic research based on the relationship analysis between v
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Embodiment 1
[0030] Use the National Renewable Energy Laboratory (NREL) standard procedures to analyze and collect lignocellulosic biomass raw material parameters, such as collecting lignocellulosic fibers from agriculture such as corn straw, wheat straw, corn cob, rice straw, switchgrass, miscanthus, etc. Waste parameters.
[0031] have the same hydrogen bond acceptor (choline chloride or betaine) and different hydrogen bond donors (including butanediol, glycerol, ethylene glycol, urea, glucose, formic acid, butyric acid, oxalic acid, lactic acid, glacial acetic acid , malic acid, citric acid, imidazole, etc.) with a molar ratio of 1:2-1:10 to prepare a series of different deep eutectic solvents. Collect molecular structure parameters and physicochemical property parameters of these deep eutectic solvents, such as interaction energy, void size, enthalpy of hydrogen bond formation, self-diffusion coefficient, electrical conductivity, density, surface tension, viscosity, solubility to carbo...
Embodiment 2
[0035] Repeat the steps described in Example 1, except that the lignocellulosic waste from agriculture is replaced by lignocellulosic raw materials from forestry: poplar wood pulp, fir wood pulp, bamboo bamboo pulp, willow wood pulp, palm wood pulp, Eucalyptus wood pulp.
Embodiment 3
[0037] Repeat the steps described in Example 1, except that the lignocellulosic waste from agriculture is replaced by lignocellulosic raw materials from the food industry: apple peels, orange peels, bagasse, potato peels, peach peels, and walnut peels.
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Abstract
The invention provides an analysis method for a pretreatment mechanism of a wood fiber deep eutectic solvent. A big data multivariable analysis method is adopted to reveal deep-level internal relations among key variables of the deep eutectic solvent pretreatment system. Multiple process variables such as physicochemical properties, structural parameters, pretreatment conditions, wood fiber biomass raw material characteristics and pretreatment effect of the deep eutectic solvent are analyzed by adopting methods such as a multiple regression analysis method, a principal component analysis method, a partial least square method, a clustering analysis method, a factor analysis method and Bayesian analysis. Through multivariable analysis, the causal relationship between the key variables in a deep eutectic solvent pretreatment process is obtained, and the pretreatment mechanism is disclosed. The method is simple in step, convenient to operate and high in practicability, provides technical guidance for revealing the deep eutectic solvent pretreatment mechanism, and has a good wood fiber deep eutectic solvent pretreatment application prospect.
Description
technical field [0001] The invention belongs to the technical field of lignocellulosic biomass refining, in particular to a method for analyzing the mechanism of lignocellulosic pretreatment with a deep eutectic solvent. Background technique [0002] With the significant increase in energy demand, the development of renewable energy, especially biomass energy, has been attracting attention. Biofuels, such as bioethanol, become the most promising renewable fuels to replace non-renewable fossil energy. From the perspective of environmental protection and sustainable development, lignocellulose-based biofuels are considered to be an important energy source in the future. The biofuel production process in lignocellulosic biomass conversion can be summarized as the following steps: pretreatment, enzymatic hydrolysis, fermentation, and purification. Among them, pretreatment is an essential link, which can reduce the recalcitrance of biomass, break the link between lignin and car...
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