Multi-stage hydrolysis and saccharification method of urban waste biomass resources

A waste biomass and waste technology, applied in the direction of chemical recovery, fermentation, etc., can solve the problems of small application range, variable structure, complex biomass components, etc., to optimize the process route, reduce secondary pollution, and reduce production costs Effect

Active Publication Date: 2021-04-30
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition and variable structure of urban waste biomass, the patented technology for a single urban waste component cannot effectively solve its overall reuse problem
[0005] Therefore, although there are relatively mature methods for the hydrolysis and saccharification of lignocellulose and starch for reuse in this field, they have limitations such as a small application range and many by-products of a single technology, and cannot realize the utilization of urban waste biomass resources. mass reuse

Method used

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  • Multi-stage hydrolysis and saccharification method of urban waste biomass resources
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  • Multi-stage hydrolysis and saccharification method of urban waste biomass resources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Carry out multi-stage hydrolysis and saccharification of urban waste biomass resources according to the following steps

[0030] (1) Classify and collect 100g of leaves and branches, catering waste, and waste A4 paper to remove metal and glass impurities; dry leaves and branches at 80°C for 24 hours, and crush them through a 100-mesh sieve; gravitational sedimentation of food waste initially removes grease , to obtain the mixture; the A4 paper was crushed into cotton wool, and 300 mL of water was added to stir to make a pulp liquid;

[0031] Table 1 Raw material component analysis (I)

[0032]

[0033] (2) Add 500mL 0.5% NaOH to the garden waste powder, place it in an XO-SM100 ultrasonic microwave reaction system for 2 hours, the ultrasonic frequency of the instrument is 20KHZ, the microwave frequency is 1000MHZ, and the reaction temperature is 50°C. After the treatment is completed, centrifuge at 3000g for 5min to collect the precipitate and waste liquid...

Embodiment 2

[0040] Example 2: Carry out multi-stage hydrolysis and saccharification of urban waste biomass resources according to the following steps

[0041] (1) Classify and collect 100g of lawn and green belt pruning waste, catering waste, and discarded newspapers, and remove metal and glass impurities; lawn and green belt pruning waste should be dried at 80°C for 24 hours, and pulverized by a grinder through a 100-mesh sieve; Gravity settling of the waste preliminarily removes grease and obtains a mixture; the waste is cut and the paper is crushed into cotton wool, and 400mL of water is added to stir to make a pulp liquid;

[0042] Table 3 Raw material component analysis (Ⅱ)

[0043]

[0044] (2) Add 500mL 0.5% KOH to the lawn and green belt pruning waste powder, place it in an XO-SM100 ultrasonic microwave reaction system for 2 hours, the ultrasonic frequency of the instrument is 20KHZ, the microwave frequency is 1000MHZ, the reaction temperature is 50°C, and centrifuged at 3000g ...

Embodiment 3

[0051] Example 3: Carry out multi-stage hydrolysis and saccharification of urban waste biomass resources according to the following steps

[0052] (1) Classify and collect waste tree trunks, leaves and sawdust for greening, catering waste, and waste packaging cartons, each 500g, to remove metal and glass impurities; leaves and branches are dried at 80°C for 24 hours, and pulverized through a 100-mesh sieve; Preliminary sedimentation to remove grease to obtain a mixture; discarded packaging cartons are broken into cotton wool, and 500 mL of water is added to stir to make a pulp liquid;

[0053] Table 5 Raw material component analysis (Ⅲ)

[0054]

[0055] (2) Add 2500mL 0.5% NaOH to the landscaping waste powder, place it in an XO-SM100 ultrasonic microwave reaction system for 2 hours, the ultrasonic frequency of the instrument is 20KHZ, the microwave frequency is 1000MHZ, and the reaction temperature is 50°C. After the treatment is completed, centrifuge at 3000g for 5min and...

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Abstract

The invention discloses a multi-stage hydrolysis and saccharification method of urban waste biomass resources, which divides urban waste biomass into three categories: landscaping waste, kitchen waste, and waste paper, and constructs a set of methods for the characteristics of biomass from different sources. The system for preparing saccharification liquid by multi-stage hydrolysis of urban waste biomass realizes synchronous hydrolysis of complex components and prepares a solution of various monosaccharides including glucose and xylose. The invention realizes green and high-efficiency utilization of urban waste biomass resources, provides reliable raw materials for biochemical industry and biorefinery industry, and has economic, social and environmental protection significance.

Description

technical field [0001] The invention relates to the technical field of biomass energy and resources, specifically, a technology for preparing saccharification liquid by degrading urban waste biomass through a multi-stage hydrolysis system of chemical method and biological method. Background technique [0002] With the rapid development of economy and society, urban waste pollution is becoming more and more serious. How to effectively solve the problem of urban waste is imminent. At present, urban waste treatment methods mainly include landfill, composting and incineration, etc. These treatment methods do not carry out multi-level utilization according to the characteristics of waste components, effectively solve the problem of waste disposal, and waste precious resources. Exhaust gas emission pollution, water pollution and other secondary pollution. [0003] In recent years, researchers have been committed to the reuse of biomass resources such as straw and agricultural and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/20C12P19/14C12P19/02
CPCC12P19/02C12P19/14C12P19/20C12P2201/00Y02P20/582
Inventor 徐宁张总平戴本林朱安峰徐继明
Owner HUAIYIN TEACHERS COLLEGE
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