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Method for achieving recycling of carbon dioxide through microbial electro-synthesis system

A technology of microbial electrosynthesis and carbon dioxide, applied in the direction of electrolysis process, electrolysis components, electrolysis organic production, etc., can solve the problems of high energy consumption, expensive catalysts, harsh conditions, etc.

Inactive Publication Date: 2017-11-17
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods still have their own shortcomings, such as harsh conditions, expensive catalysts, high energy consumption, etc.

Method used

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  • Method for achieving recycling of carbon dioxide through microbial electro-synthesis system
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  • Method for achieving recycling of carbon dioxide through microbial electro-synthesis system

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example 1

[0039] Example 1: In the microbial electrosynthesis system of the present invention, when the temperature of the cathode compartment of the MES is controlled at 25°C and the cathode potential is controlled at -0.9V vs. Ag / AgCl / KCl, the maximum amount of acetate produced by the biocathode can reach 519.04mg L -1 , the maximum production of propionic acid and butyric acid can reach 37.71mg L -1 and 39.40mg L -1 .

example 2

[0040] Example 2: In the microbial electrosynthesis system of the present invention, when the temperature of the cathode compartment of the MES is controlled at 35°C and the cathode potential is controlled at -0.9V vs. Ag / AgCl / KCl, the maximum amount of acetate produced by the biocathode can reach 464.79mg L -1 , the maximum production of propionic acid and butyric acid can reach 46.78mg L -1 and 32.20mg L -1 .

example 3

[0041] Example 3: In the microbial electrosynthesis system of the present invention, when the temperature of the cathode compartment of the MES is controlled at 55°C and the cathode potential is controlled at -0.9V vs.Ag / AgCl / KCl, the maximum amount of acetate produced by the biocathode can reach 306.46mg L -1, the maximum production of propionic acid and butyric acid can reach 37.13mg L -1 and 46.38mg L -1 .

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Abstract

The invention provides a method for achieving recycling of carbon dioxide through a microbial electro-synthesis system. According to the method for achieving recycling of the carbon dioxide through the microbial electro-synthesis system, a mixed anaerobe serves as a cathode, the mixed anaerobe comprises Proteobacteria, Firmicutes and Bacteroidetes. The invention further provides a microbial electro-synthesis system device. The microbial electro-synthesis system device comprises at least an anode and at least a cathode, wherein the mixed anaerobe serves as the cathode, the mixed anaerobe comprises Proteobacteria, Firmicutes and Bacteroidetes. The method for achieving recycling of the carbon dioxide through the microbial electro-synthesis system and the microbial electro-synthesis system device can achieve that the carbon dioxide is reduced into volatile fatty acid by taking use of common electrode materials, the cost is saved, and meanwhile, substances with high added values are generated by taking use of and domesticating an enriched mixed bacterial system, so that the good effects are achieved on the three aspects of the environment, the energy and the resources.

Description

technical field [0001] The invention relates to the technical field of resource utilization of carbon dioxide, and mainly relates to a method for producing volatile fatty acids (acetic acid, propionic acid, butyric acid) by using a microbial electrosynthesis system to reduce carbon dioxide. Background technique [0002] With the rapid development of the economy, excessive consumption of fossil fuels leads to excessive emissions of carbon dioxide, which in turn leads to an increasingly serious greenhouse effect. Carbon dioxide control and emission reduction has become one of the important tasks that need to be solved urgently around the world, and my country is also facing huge pressure to reduce emissions. Therefore, it is of great significance to vigorously develop technologies for carbon dioxide fixation and recycling. Among them, as a promising emission reduction method, carbon dioxide resource utilization technology can not only convert carbon dioxide into high value-ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/04C25B9/00C25B3/25
CPCC25B9/00C25B3/25
Inventor 穆杨杨厚云刘静覃院
Owner UNIV OF SCI & TECH OF CHINA
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