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Pretreatment method for biomass fiber material

A biomass fiber and pretreatment technology, which is applied in fiber raw material processing, textile and papermaking, etc., can solve the problems of long cycle and poor practicability, and achieve the advantages of less environmental pollution, improved microscopic appearance, and improved pretreatment effect. Effect

Inactive Publication Date: 2012-01-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biological method mainly uses white rot fungi, brown rot fungi and soft rot fungi to degrade lignin to improve enzymatic hydrolysis efficiency. The treatment conditions are mild, but the cycle is long and the practicability is not strong

Method used

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  • Pretreatment method for biomass fiber material
  • Pretreatment method for biomass fiber material
  • Pretreatment method for biomass fiber material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of Ammonia-1-Butyl-3-Methylimidazolium Chloride ([Bmin]Cl) Composite Microemulsion

[0031] Cyclohexane, cetyltrimethylammonium bromide (CTAB), n-butanol, ammonia water and [Bmin]Cl were used as the oil phase, surfactant, co-surfactant and hydrogen bond breaking of the microemulsion system, respectively. Agent and ionic liquid, wherein ammoniacal liquor, [Bmin]Cl and distilled water form aqueous phase substance, ammoniacal liquor: the mass ratio of [Bmim]Cl is 1:2, and the mass ratio of ammoniacal liquor and distilled water is 1:2, and CTAB, n-butyl After alcohol and cyclohexane are mixed, stir at 30°C at a speed of 150rpm. When there are no bubbles in the stirring process, add water phase substances to it, and continue stirring to obtain a clear and transparent ammonia water-[Bmin]Cl composite microemulsion. The prepared The mass ratio of each component of the composite microemulsion is CTAB: n-butanol: cyclohexane=2:1:2; wherein the water phase material ac...

Embodiment 2

[0037] Ammonia-1-ethyl-3-methylimidazolium chloride ([Emin]Cl) composite microemulsions were prepared by using n-octane, cetyltrimethylammonium bromide (CTAB), ethanol, ammonia and [ Emin]Cl) as the oil phase, surfactant, co-surfactant, hydrogen bond breaker and ionic liquid of the composite microemulsion system, wherein ammoniacal liquor, [Emin]Cl) and distilled water are mixed to form the water phase material, wherein ammoniacal liquor:[ The mass ratio of Emin]Cl) is 1:2, and the mass ratio of ammonia water:distilled water=1:2. After mixing CTAB, ethanol and n-octane, stir at 200rpm at 30°C. When there is no bubble in the stirring process Add water phase substance wherein again, continue to stir to obtain clear and transparent ammoniacal liquor-[Emin]Cl composite microemulsion, the mass ratio of each component of the composite microemulsion that makes is CTAB: ethanol: n-octane=2:1:2 , wherein the water phase material accounts for 70% of the total mass of the composite micro...

Embodiment 3

[0042] The urea-[Bmin]Cl composite microemulsion was prepared, and cyclohexane, cetyltrimethylammonium bromide (CTAB), n-butanol, urea and [Bmin]Cl were respectively used as the oil phase of the composite microemulsion system, Surfactant, co-surfactant, hydrogen bond breaker and ionic liquid, wherein urea, [Bmin]Cl and distilled water are mixed to form water phase substance, wherein the mass ratio of ammonia: [Bmin]Cl is 1:2, ammonia: The mass ratio of distilled water is 1:2. After mixing CTAB, n-butanol and cyclohexane, stir at 50°C at a speed of 300rpm. When there are no bubbles in the stirring process, add water phase substances to it, and continue stirring to obtain clarification. Transparent urea-[Bmin]Cl composite microemulsion, the mass ratio of each component of the composite microemulsion that makes is CTAB: n-butanol: hexanaphthene=2:1:2; 60% of the quality.

[0043] The air-dried straw is chopped by a cutting machine, and the straw with a length of 1 to 5 cm is tak...

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Abstract

The present invention provides a pretreatment method for a biomass fiber material. The method comprises: mixing a surfactant, an cosurfactant and a oil phase, then stirring; adding a water phase material to the resulting mixture when no bubble is generated during stirring to obtain clear and transparent composite microemulsion; mixing a preprocessed biomass fiber material and the composite microemulsion according to a certain solid-to-liquid ratio, controlling a temperature to 30-120 DEG C and controlling pressure to 0.1-2.0 Mpa; carrying out washing through clear water after completing the reaction, wherein the resulting solid is the pretreated biomass fiber material. According to the present invention, the composite microemulsion is adopted for treating the biomass, such that the crystallization characteristic of the biomass fiber is changed, the specific surface area and the accessibility of the enzyme solution are increased, the pretreatment effect is improved; the used chemical drugs has characteristics of easy recovery and utilization and low environmental pollution; the reaction is performed at the low temperature under the low pressure so as to reduce the cost and the energy consumption of the pretreatment process.

Description

technical field [0001] The invention relates to comprehensive utilization of biomass, in particular to a pretreatment method for biomass fiber raw materials. Background technique [0002] Biomass fiber is a rich renewable resource. The primary problem to be solved when converting it into biomass energy is how to effectively improve the efficiency of biomass enzymatic saccharification. The structure of the plant cell wall is dense and complex, and it is difficult for the chemical liquid to penetrate into the pore structure of the cell wall uniformly and quickly; cellulose has a high degree of crystallinity and is wrapped by hemicellulose and lignin, so It is necessary to pre-treat the fiber raw material. Biomass is pretreated to change the microscopic morphology, increase surface accessibility, destroy the binding layer of lignin, hemicellulose and cellulose, partially or completely remove lignin and hemicellulose, improve enzymatic saccharification and subsequent refining ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
Inventor 杨仁党汪滨陈克复刘德桃
Owner SOUTH CHINA UNIV OF TECH
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