Lignocellulose biomass anaerobic fermentation method adopting biogas slurry and kitchen waste combined pretreatment

A lignocellulose and anaerobic fermentation technology, which is applied in the field of anaerobic fermentation of lignocellulosic biomass combined with biogas slurry and kitchen waste pretreatment, can solve the problems of poor operability and high pretreatment cost, and achieves simple and improved methods. Biodegradability, improving the effect of efficient utilization

Pending Publication Date: 2021-06-18
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high pretreatment cost and poor operability in the existing lignocellulose pretreatment process, the present invention aims to provide a method for combined anaerobic fermentation of lignocellulosic biomass pretreatment with biogas slurry and kitchen waste

Method used

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  • Lignocellulose biomass anaerobic fermentation method adopting biogas slurry and kitchen waste combined pretreatment
  • Lignocellulose biomass anaerobic fermentation method adopting biogas slurry and kitchen waste combined pretreatment
  • Lignocellulose biomass anaerobic fermentation method adopting biogas slurry and kitchen waste combined pretreatment

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Example 1 Biogas production in mixed anaerobic fermentation of different proportions of livestock and poultry manure and crop straw

[0036] 1. Experimental method

[0037] S1. Crush the cow dung and sugarcane straw after solid-liquid separation, and pass through a 40-mesh sieve for later use. The ratio of cow dung and crop straw is 15:85, 25:75, 35:65, 50:50, and 65, respectively. : 35, 75: 25, 85: 15 were mixed and pulverized. In addition, separate cow dung and sugarcane straw were used as controls;

[0038] S2. Pass the biogas slurry and biogas residue after the anaerobic fermentation reaction through a 40-mesh sieve for solid-liquid separation, and put the biogas slurry into a closed bottle and let it stand until no more biogas is produced, and set aside;

[0039] S3. Add the biogas slurry in step S2 to the crushed lignocellulosic biomass in step S1 and mix, so that the TS concentration of the mixture is 15%;

[0040] S4. Add kitchen waste to the mixture obtained ...

Embodiment 2

[0046] Example 2 Biogas production in anaerobic fermentation at different temperatures and different kitchen waste addition ratios

[0047] 1. Experimental method

[0048] S1. Mix and pulverize the cow dung and sugarcane stalks after solid-liquid separation according to the VS ratio of 1:3, pass through a 40-mesh sieve, and set aside;

[0049] S2. Pass the biogas slurry and biogas residue after the anaerobic fermentation reaction through a 40-mesh sieve for solid-liquid separation, and put the biogas slurry into a closed bottle and let it stand until no more biogas is produced, and set aside;

[0050] S3. Add the biogas slurry in step S2 to the crushed lignocellulosic biomass in step S1 and mix, so that the TS concentration of the mixture is 15%;

[0051]S4. Add kitchen waste to the mixture obtained in step S3, pretreat at 55°C, 37°C, and 25°C for 4, 5, and 6 days, and mechanically stir once every 0.5 hours to make the flora and bio-acids Fully contact with lignocellulosic b...

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Abstract

The invention provides a lignocellulose biomass anaerobic fermentation method adopting biogas slurry and kitchen waste combined pretreatment. The method comprises the following steps: firstly, crushing lignocellulose biomass; secondly, adding biogas slurry into the crushed lignocellulose biomass; thirdly, adding kitchen waste in a specific proportion; then, carrying out pretreatment at a specific temperature; and finally, carrying out anaerobic digestion on the pretreated mixture and inoculated biogas slurry. According to the invention, the lignocellulose biomass material is pretreated with the biogas slurry and the kitchen waste as pretreatment biological agents, so that anaerobic fermentation on the lignocellulose biomass material becomes easier; and moreover, the method is simple to operate, free of additional equipment requirement, low in cost, and high in biogas yield.

Description

technical field [0001] The invention belongs to the field of resource utilization of organic solid waste, and more specifically relates to a method for anaerobic fermentation of lignocellulosic biomass combined with biogas slurry and kitchen waste. Background technique [0002] As a large agricultural country, my country produces a large amount of lignocellulosic biomass such as livestock and poultry manure and crop stalks every year. It is very important to efficiently utilize it as a resource. Lignocellulosic biomass has been widely used in biogas preparation. It can not only Reducing many environmental pollution problems caused by excess livestock and poultry manure and crop straw can also solve the shortage of biogas raw materials in some areas. However, lignocellulosic biomass has formed a variety of protection systems in the natural evolution process, evolved a complex structure and chemical mechanism of lignocellulose, and formed a tight structural barrier to resist th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04
CPCC12P5/023C02F11/04C12P2203/00Y02E50/30
Inventor 谢君徐孙强毕桂灿刘香檬
Owner SOUTH CHINA AGRI UNIV
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