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Method for improving short-chain fatty acid anaerobic methanogenesis efficiency

A short-chain fatty acid, anaerobic methane production technology, applied in waste fuel, fermentation and other directions, can solve the problems of slow anaerobic fermentation rate of organic matter, low activity of methanogenic microorganisms, low methane production efficiency, etc., to improve electron transfer efficiency, The effect of promoting interspecies electron transfer and increasing methane production

Inactive Publication Date: 2015-04-29
HEFEI UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0005] At present, anaerobic fermentation technology has been widely used in the treatment of industrial wastewater, urban waste, agricultural waste and livestock manure and the development of potential energy, but there are still some problems, such as: slow rate of anaerobic fermentation of organic matter, low utilization rate , low methane production efficiency, etc.
One of the main reasons for the above phenomenon is that the efficiency of the methanogenic stage is low, the activity of methanogenic microorganisms is low, and the production of methane is small.

Method used

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  • Method for improving short-chain fatty acid anaerobic methanogenesis efficiency
  • Method for improving short-chain fatty acid anaerobic methanogenesis efficiency
  • Method for improving short-chain fatty acid anaerobic methanogenesis efficiency

Examples

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Effect test

Embodiment 2

[0035] Take 4 groups of 250mL serum bottles as sodium propionate anaerobic reactors, 4 in each group, add sodium propionate, anaerobic inoculation sludge, trace element aqueous solution, and vitamin aqueous solution to the serum bottles, so that the sodium propionate in the serum bottles The initial concentration of the anaerobic inoculum sludge (VS) is 0.164g / L, the initial concentration of the anaerobic inoculated sludge is 1.92g / L, the amount of trace element aqueous solution and vitamin aqueous solution is 1mL / L, and then passed through 1mol / L HCl and 1mol / L NaOH The solution adjusts the pH of the system to 7;

[0036] Blow argon into the serum bottle of the first group to clear the air in the bottle, then seal it with an aluminum plug, and place it in a constant temperature incubator at 35°C for cultivation as a blank control group;

[0037] Add 100-mesh flake graphite to the serum bottle of the second group and mix it evenly with anaerobic inoculation sludge and sodium p...

Embodiment 3

[0043] Take 4 groups of 250mL serum bottles as sodium butyrate anaerobic reactors, 4 in each group, add sodium butyrate, anaerobic inoculation sludge, trace element aqueous solution, and vitamin aqueous solution to the serum bottles, so that the sodium butyrate in the serum bottles The initial concentration of the anaerobic inoculum sludge (VS) was 0.164g / L, the initial concentration of the anaerobic inoculation sludge was 0.164g / L, the amount of the trace element aqueous solution and the vitamin aqueous solution was 1mL / L, and then passed through 1mol / L HCl and 1mol / L NaOH The solution adjusts the pH of the system to 7;

[0044] Blow argon into the serum bottle of the first group to clear the air in the bottle, then seal it with an aluminum plug, and place it in a constant temperature incubator at 35°C for cultivation as a blank control group;

[0045] Add 100-mesh flake graphite to the serum bottle of the second group and mix it evenly with anaerobic inoculation sludge and s...

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Abstract

The invention discloses a method for improving short-chain fatty acid anaerobic methanogenesis efficiency. The method is characterized by comprising the following steps: adding graphite as an additive into an anaerobic fermentation system with short-chain fatty acid, and uniformly mixing the graphite with anaerobic microorganisms and the short-chain fatty acid in the anaerobic fermentation system, thereby improving the activity of the anaerobic microorganisms, increasing the number of methanogens, improving the short-chain fatty acid anaerobic methanogenesis efficiency and increasing the yield of methane in the process that the short-chain fatty acid is converted into methane through the anaerobic microorganisms together with graphite.

Description

technical field [0001] The invention relates to renewable energy utilization of organic waste and waste treatment technology. Background technique [0002] With the shortage of non-renewable energy sources such as oil and coal and the aggravation of environmental problems, my country and even the world are advocating the development of new renewable energy sources. where CH 4 、H 2 Biomass energy, represented by biomass energy, has become a major component of renewable energy due to its renewability and environmental friendliness. The main component of biogas is CH 4 and CO 2 , is an important biomass energy, occupying a high position in the renewable new energy. The study found that a high-efficiency biogas digester of more than ten cubic meters can produce gas for a whole year to provide living fuel for three households for more than ten months. 3 Contains 65% CH 4 The biogas is equivalent to 0.6m 3 natural gas, l.375m 3 city ​​gas, 0.76kg raw coal, and 6.4kwh elec...

Claims

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Application Information

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IPC IPC(8): C12P5/02
CPCY02E50/30
Inventor 王进岳正波冯雪梅马丁
Owner HEFEI UNIV OF TECH
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