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Method for synthesizing hydrogen peroxide through microbiological electrochemical system

A microbial electrochemistry, hydrogen peroxide technology, applied in chemical instruments and methods, inorganic chemistry, electrolysis process, etc., can solve the problems of high energy input, high energy consumption, etc., to achieve treatment, reduce energy consumption, reduce intermediate harmful products The effect of emissions

Pending Publication Date: 2017-10-13
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More than 95% of the world's H 2 o 2 Both are prepared by the anthraquinone method, but the anthraquinone method produces H 2 o 2 is an energy-intensive process
In addition, electrolysis is also commonly used H 2 o 2 method of preparation, but it is also a high energy input process

Method used

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  • Method for synthesizing hydrogen peroxide through microbiological electrochemical system
  • Method for synthesizing hydrogen peroxide through microbiological electrochemical system

Examples

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Embodiment 1

[0021] A microbial electrochemical system for synthesizing hydrogen peroxide, which includes an anode chamber baffle 1, an anode chamber 2, a cation exchange membrane 3, a cathode chamber 4, and a cathode chamber baffle in order of assembly from left to right 5. An anode 6 is built in the anode chamber, and a cathode 7 is built in the cathode chamber. The anode is exported from the anode outlet 13 through a graphite rod, and the cathode is exported through a stainless steel gasket; the anode chamber is respectively provided with an anode chamber feed port 8, Anode chamber outlet 10, anode outlet 13; cathode chamber inlet 9, cathode chamber outlet 11, cathode outlet 14 are respectively opened on the cathode chamber; connecting thread port 15 is connected to the anode chamber by bolts The chamber baffle plate 1 and the cathode chamber baffle plate 5 squeeze the whole device together, and gaskets are required between each part to ensure the sealing of the system.

[0022] The ano...

Embodiment 2

[0025] A method for synthesizing hydrogen peroxide using the microbial electrochemical system described in Example 1.

[0026] To start a microbial electrochemical system for synthesizing hydrogen peroxide, the anaerobic anode chamber is filled with the following ratio of materials, inoculum: substrate + pH buffer = 1:9; the aerobic cathode chamber is filled with pH buffer Liquid; 0.5V voltage is applied between the anode and the cathode.

[0027] After a successful start-up of the system, only the digested substrate is fed into the anode compartment, no inoculum needs to be added.

[0028] Preferably, the cathode outlet 14 is additionally equipped with a small peristaltic pump and H 2 o 2 Purification system.

[0029] The working principle of the second embodiment is as follows: the substrate in the anode chamber 2 is digested by anaerobic microorganisms attached to the anode 6 to generate electrons (e - ) and hydrogen ions (H + ), resulting in e - Passed from the micro...

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Abstract

The invention provides a method for synthesizing hydrogen peroxide through a microbiological electrochemical system. The method is characterized in that microorganism is treated as a catalyst for degrading organic substances; the chemical energy released by the degrading of the organic substance is utilized to drive a cathode of the system to make a reaction of 8H<+>+4O2+8e<-> arrow 4H2O2 under little additional voltage, therefore, hydrogen peroxide in a cathode chamber is synthesized. The system mainly comprises an anode chamber baffle plate, an anode chamber, a cation exchange membrane, a cathode chamber and a cathode chamber baffle plate. With the adoption of the method, the problems of high energy consumption and the emission of intermediate harmful products of a traditional hydrogen peroxide synthesizing method can be solved; a novel hydrogen peroxide synthesizing system and method is provided.

Description

technical field [0001] The invention relates to a method for synthesizing chemicals with a microbial electrochemical system, in particular to a method for synthesizing hydrogen peroxide with a microbial electrochemical system. Background technique [0002] Microbial electrochemical system is a system that can degrade organic matter and obtain certain products under connected load or applied voltage. In the past ten years, microbial electrochemical systems have developed rapidly, with multi-polarization of system types (microbial fuel cells, microbial electrolysis cells, microbial electrosynthesis systems), and diversification of system products (electric energy, H 2 , high value-added chemicals), system functions are diversified (sewage treatment, fuel and chemical synthesis, water quality monitoring). At present, research work on microbial electrochemical systems is mainly focused on sewage treatment and fuel and chemical synthesis. Compared with traditional treatment and ...

Claims

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Application Information

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IPC IPC(8): C01B15/029C25B1/30C25B3/00C25B11/04C25B9/00
CPCC25B1/30C25B3/00C25B9/00C25B11/04C01B15/029
Inventor 孙国涛邱凌李姗珊
Owner NORTHWEST A & F UNIV
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