Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for co-producing xylooligosaccharide, xylose and xylitol from industrial waste materials

A technology of xylooligosaccharides and industrial waste, applied in the direction of fermentation, etc., can solve the problems of not realizing the full utilization of plant resources, difficulty in adapting to the needs of industrialization, and large amount of waste lye, so as to save membrane regeneration time and realize full The effect of using and improving the purity

Active Publication Date: 2019-03-08
SHANDONG LONGLIVE BIO TECH CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual industrialized production, the amount of waste lye produced by industrialized production is large and there are many impurities. The method used in the above patent application is difficult to meet the needs of industrialization.
At the same time, this method only prepares xylooligosaccharides, and the enzymatic hydrolysis residue is still discarded, and the full utilization of plant resources has not been realized.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for co-producing xylooligosaccharide, xylose and xylitol from industrial waste materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A kind of method of industrial waste co-production xylo-oligosaccharides and xylose, xylitol

[0029] Described method comprises the following steps:

[0030] (1) Collect the waste lye produced by papermaking, the alkali concentration is 8%, and the hemicellulose content is 5%, and the waste liquid is processed by combining the membranes of filter bag-ultrafiltration-electrodialysis-nanofiltration membrane in parallel-series Medium alkali recovery, four ultrafiltration membranes in parallel connection of ultrafiltration device, modular independent feeding, ultrafiltration membrane pore size 8000Da; electrodialysis control anode chamber feed solution pH8, conductivity ≤ 1.5ms / cm discharge; hemicellulose concentrate After dilution, enter the nanofiltration membrane and continue to add pure water to replenish it. The molecular weight cut-off of the nanofiltration membrane is below 150Da, and the conductivity is ≤1ms / cm. The material is transferred to the enzym...

Embodiment 2

[0034] Embodiment 2 A kind of method of industrial waste co-production xylo-oligosaccharides and xylose, xylitol

[0035] Described method comprises the following steps:

[0036] (1) Collect the squeezed lye produced by the production of viscose fiber, the alkali concentration is 10%, the hemicellulose content is 6%, and the combination of filter bag-ultrafiltration-electrodialysis-nanofiltration membrane is combined in series 4 ultrafiltration membranes of ultrafiltration equipment for alkali recovery in waste liquid are connected in parallel, modular independent feeding, ultrafiltration membrane pore size 10000Da; electrodialysis controls the pH of the anode chamber feed solution, and the conductivity is ≤ 2ms / cm discharge; hemicellulose concentration After the solution is diluted, enter the nanofiltration membrane, and continue to add pure water to supplement, the molecular weight cut-off of the nanofiltration membrane is below 150Da, and the conductivity is ≤1.5ms / cm. The ...

Embodiment 3

[0040] Embodiment 3 A kind of method of industrial waste co-production xylo-oligosaccharides and xylose, xylitol

[0041] Described method comprises the following steps:

[0042] (1) Collect the squeezed lye produced by the production of viscose fiber, the alkali concentration is 10%, the hemicellulose content is 8%, and the combination of filter bag-ultrafiltration-electrodialysis-nanofiltration membrane is combined in series 4 ultrafiltration membranes are connected in parallel in the ultrafiltration device for alkali recovery in waste liquid, modular independent feeding, and the pore size of the ultrafiltration membrane is 9000Da; electrodialysis controls the pH of the anode chamber feed solution, and the conductivity is ≤1.5ms / cm discharge; hemicellulose The concentrated solution is diluted and then enters the nanofiltration membrane, and is continuously supplemented with pure water. The molecular weight cut-off of the nanofiltration membrane is below 150Da, and the conduc...

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
Login to View More

PUM

PropertyMeasurementUnit
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of biochemical engineering, and particularly relates to a method for co-producing xylooligosaccharide, xylose and xylitol from industrial waste materials.Alkali liquor is recycled from alkali waste liquor in a papermaking / viscose fiber production process through an intermembrane parallel-series combined process of treatment through a filter bag, treatment through an ultra-filtration membrane, electrodialysis and treatment through a nanofiltration membrane, the pH value of a solution is regulated with a proper amount of acid solution, wood fiber suspension is recycled, continuous enzymolysis is carried out by xylanase to obtain enzymolysis liquid and enzymolysis residues, and the enzymolysis liquid is subjected to a series of purification, concentration and drying to prepare xylooligosaccharide finished products with different qualities; and the enzymolysis residues are hydrolyzed to prepare the xylose and are hydrogenated to prepare the xylitol. Environmental pollution caused by emission of industrial wastes is relieved, and multi-stage resource utilization of wastes is realized.

Description

technical field [0001] The invention belongs to the technical field of biochemical industry, and in particular relates to a method for co-producing xylooligosaccharides, xylose and xylitol from industrial waste. Background technique [0002] In the process of making paper or viscose fiber from plant cellulose such as cotton pulp, wood pulp, straw pulp, etc., the pulp is impregnated with lye. During this process, the hemicellulose of the pulp is continuously dissolved into the lye, and the reflux lye after pressing contains hemicellulose with a higher concentration; It affects the impregnation effect of pulp, so it is necessary to control the concentration of hemifiber in the impregnation lye to meet the process requirements. In the prior art, high-concentration semi-fiber lye is discharged into the sewage pool, which causes technical difficulties in environmental protection treatment of sewage and brings high treatment costs. [0003] Xylo-oligosaccharides, xylose, and xyl...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C12P7/18C12P19/00C12P19/02C12P19/04C12P19/14
CPCC12P7/18C12P19/00C12P19/02C12P19/04C12P19/14
Inventor 夏蕊蕊肖林李莹程少博
Owner SHANDONG LONGLIVE BIO TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com