Bioelectricity synthesis system and method for synthesizing acetic acid and/or ethyl alcohol through same

A technology for bioelectricity and control systems, which is applied in biochemical equipment and methods, bioreactor/fermenter combinations, bioreactors/fermenters for specific purposes, etc., can solve the cumbersome control of raw material supply and low utilization efficiency of raw materials and other problems, to achieve the effects of high bioelectric synthesis efficiency, online control, and simple operation.

Active Publication Date: 2016-06-22
ZHEJIANG GONGSHANG UNIVERSITY
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of the traditional carbon dioxide gas supply in the bioelectric synthesis system, such as cumbersome raw material supply control, low raw material utilization efficiency and becoming the speed-limiting step of the entire electrosynthesis system, the present invention provides a three-chamber biological system characterized by a gas cathode. Electrosynthesis system and corresponding method

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  • Bioelectricity synthesis system and method for synthesizing acetic acid and/or ethyl alcohol through same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Embodiment 1: the synthesis of acetic acid under the pure bacteria system

[0080] (1) Construction of bioelectric synthesis system

[0081] The structural schematic diagram of the bioelectric synthesis system constructed in this example is as follows figure 1 , mainly including a three-chamber bioelectric synthesis reactor made of plexiglass. Each chamber is respectively a block plexiglass with a length of 12 cm x a width of 12 cm x a thickness of 5 cm, and a hole with a diameter of 7 cm is opened in the middle of each piece of plexiglass, which is used as the reaction chamber of the cathode and anode chambers and the air chamber of the third chamber. according to figure 1 As shown, the pH online control system is connected to the cathode chamber and the gas control system is connected to the gas chamber.

[0082] The anode uses a 20-mesh titanium mesh with a diameter of 6 cm and a thickness of 0.5 mm.

[0083] The gas cathode uses a 40-mesh, 0.3mm stainless steel ...

Embodiment 2

[0099] Embodiment 2: Ethanol synthesis under the mixed bacteria system

[0100] In this embodiment, the bioelectric synthesis reaction system, the anolyte and the cathodic electrosynthesis culture solution are the same as those in Embodiment 1.

[0101] The anode is also made of titanium mesh, and the preparation method of the cathode is the same as in Example 1, except that the nickel powder is replaced by zinc powder.

[0102] The cathode potential was controlled at -800mV (VS.SHE), and the cathode inoculated microorganisms were the anaerobic sludge acclimatized by the mixture of hydrogen and carbon dioxide (v:v=80:20) used in the laboratory for 5 months.

[0103] The operation mode is the same as in Example 1. From the third day of operation, the accumulation of ethanol in the catholyte is detected, and on the tenth day, the accumulated ethanol in the cathode culture solution reaches 2.3±0.17mg / L.

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Abstract

The invention discloses a bioelectricity synthesis system and a method for synthesizing acetic acid and/or ethyl alcohol through the same. The bioelectricity synthesis system comprises a reactor, an online pH control system, an air supply system and a power source. The reactor is a three-chamber reactor and comprises an air chamber, a negative electrode chamber and a positive electrode chamber, wherein the air chamber is connected with the air supply system; the negative electrode chamber is externally connected with the online pH control system, the negative electrode chamber and the air chamber are partitioned by an air negative electrode, and the negative electrode chamber is further internally provided with a reference electrode; the positive electrode chamber is internally provided with a positive electrode, the positive electrode chamber and the negative electrode chamber are partitioned by a cation exchange membrane, and the positive electrode, the air negative electrode and the reference electrode are externally connected with the power source through wires. Positive electrode electrolyte is added into the positive electrode chamber, a bioelectricity synthetic nutrient solution obtained after sterile and anaerobic treatment is added into the negative electrode chamber, and electrosynthesis bacteria are inoculated into the negative electrode chamber; carbon dioxide is sent into the air chamber through metering of the air supply system, and carbon dioxide penetrates through the air negative electrode and is converted into acetic acid and/or ethyl alcohol in the negative electrode chamber.

Description

technical field [0001] The invention belongs to the technical fields of emission reduction, waste resource conversion to energy and biosynthesis, and specifically relates to a gas cathode bioelectric synthesis reaction device and a method for efficiently utilizing carbon dioxide and rapidly regulating bioelectric synthesis of organic matter using the reaction device. Background technique [0002] Global warming and resource shortage are two major problems facing human society today. In recent years, with the continuous warming of the global climate, the greenhouse effect has attracted more and more attention from human beings, and the call for energy conservation and emission reduction has continued to grow. But on the other hand, the extensive use of fossil fuels has led to a continuous increase in the level of carbon dioxide in the atmosphere, which has reached the highest level in the earth's millions of years. How to reduce carbon dioxide emissions has become an importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/36C12M1/04C12P7/54C12P7/06C25B3/00C25B9/00
CPCC12M21/12C12M23/58C12M41/26C12P7/06C12P7/54Y02E50/10
Inventor 冯华军张学勤沈东升黄彬梁禹翔王炎锋陈维周玉央李娜
Owner ZHEJIANG GONGSHANG UNIVERSITY
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