A kind of composite microbial bacterial agent for producing biogas from low-rank coal and its application

A compound microbial agent and biogas technology, applied in the direction of microorganism-based methods, microorganisms, waste fuels, etc., can solve problems such as difficult degradation, complex structure of low-rank coal, and not a microbial conversion substrate, etc., to achieve obvious effects, The effect of ensuring the convenience of production and broadening the scope of application

Active Publication Date: 2022-02-01
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The life process of microorganisms in the flora is a complex thermophysical process of heat and mass transfer and biochemical reactions in porous media. Compared with common organic substrates such as carbohydrates, low-rank coal has a complex structure and is not easy to degrade, and Not an ideal substrate for microbial transformation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The composite microbial bacterial agent used in the production of biogas from low-rank coal described in this example includes the following components in mass content: 10wt% of Angel Brewery Koji, 30wt% of Angel Brewery High Active Dry Yeast, and Angelica Xiangba Brewing Compound 15wt% of functional bacteria, 10wt% of Gutian red yeast rice, 35wt% of acetic acid bacteria (Acetobacter pasteurianus AS.1.41) for making vinegar.

[0035] In the 500mL anaerobic reaction bottle, add 90g of lignite pulverized to 100 mesh, add 200mL of anaerobic activated sludge, then add a total of 4.5g of the above-mentioned composite microbial bacterial agents weighed and mixed in proportion, and add pure water until the total reaction system is 450mL, adjust the pH to 7.0, and conduct the methane production experiment at a high temperature of 50°C. The gas production reached the highest on the second day, and the gas production was 1032.4mL. After that, the gas production gradually decreased...

Embodiment 2

[0039] The composite microbial bacterial agent used in the production of biogas from low-grade coal described in this example includes the following components in mass content: 10wt% of Angel Brewing Koji, 30wt% of Angel Brewing High Active Dry Yeast, Angel Xiangba Brewing Compound 15wt% of functional bacteria, 10wt% of Gutian red yeast rice, 35wt% of acetic acid bacteria (Acetobacter pasteurianus AS.1.41) for making vinegar.

[0040] In a 500mL anaerobic reaction bottle, add 90g of lignite pulverized to 100 mesh, add 200mL of anaerobic activated sludge, then add a total of 4.5g of the above-mentioned composite microbial bacterial agents weighed and mixed in proportion, and add pure water until the total reaction system is 450mL, adjust the pH to 7.0, and conduct the methane production experiment at a medium temperature of 30°C. The gas production reached the highest on the first day, and the gas production was 1459.8mL. After that, the gas production gradually decreased until ...

Embodiment 3

[0044] The composite microbial bacterial agent used in the production of biogas from low-grade coal described in this example includes the following components in mass content: 10wt% of Angel Brewing Koji, 30wt% of Angel Brewing High Active Dry Yeast, Angel Xiangba Brewing Compound 15wt% of functional bacteria, 10wt% of Gutian red yeast rice, 35wt% of acetic acid bacteria (Acetobacter pasteurianus AS.1.41) for making vinegar.

[0045] Add 90g of lignite crushed to 100 mesh into a 500mL anaerobic reaction bottle, add 200mL of anaerobic activated sludge that has been heated at 100°C for 30min to kill methanogens, and then add a total of 4.5g of the above-mentioned composite microorganisms weighed and mixed in proportion Bacteria agent, add purified water until the total reaction system is 450mL, adjust the pH to 7.0, and conduct the hydrogen production experiment at 50°C. The hydrogen production reached the highest on the second day, and the hydrogen production was 1080.3mL. Afte...

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Abstract

The invention belongs to the technical field of coal resource utilization, in particular relates to a composite microbial bacterial agent for producing biogas from low-rank coal, and discloses its preparation method and application. The compound microbial bacterial agent used in the production of biogas from low-rank coals such as lignite and low-modified bituminous coal (long-flame coal, non-sticky coal, and weakly sticky coal) according to the present invention is selected from Angel Brewing Koji and Angel Brewing High Activity Dry yeast, Angel Xiangba brewing complex functional bacteria, Gutian red yeast rice and acetic acid bacteria for vinegar are precisely compounded as active ingredients, and the specific chemical bonds of low-rank coal are broken and dissociated with the help of the synergistic effect of the complex bacteria and microorganisms , and use the corresponding functional groups to convert into green low-carbon energy such as biomethane and biohydrogen, which can effectively degrade low-rank coal, and realize low-carbon conversion of high-carbon resources and low-carbon resources of low-rank coal without adding exogenous nutrients , help to increase the gas production of biofuels, improve the efficiency of converting low-rank coal into clean energy, and have high biocatalytic efficiency.

Description

technical field [0001] The invention belongs to the technical field of coal resource utilization, in particular relates to a composite microbial bacterial agent for producing biogas from low-rank coal, and further discloses its preparation method and application. Background technique [0002] Solar energy is the source of almost all energy on the earth, and biomass is the carrier of solar cycle transformation. The energy basis of modern industrial development--coal, oil, and natural gas are all ancient biomass buried underground, through the joint action of microorganisms and geochemistry evolved. For a long period of time in the future, fossil energy will still occupy a dominant position in China's energy structure, especially my country's coal-based energy structure will not change for a long period of time in the future. With the increasing pressure of protecting the ecological environment and coping with climate change, there is an urgent need for the green transformati...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C12N1/18C12N1/16C12N1/14C12N1/20C12P39/00C12P5/02C12P3/00C12R1/865C12R1/845C12R1/645C12R1/02
CPCC12N1/18C12N1/16C12N1/14C12N1/20C12P39/00C12P5/023C12P3/00Y02E50/30
Inventor马力通
OwnerINNER MONGOLIA UNIV OF SCI & TECH