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Device and method for regulating and controlling pH and reinforcing hydrogen production through in-situ hydrogen oxidation method

An oxidation method, hydrogen technology, applied in the direction of electrolysis components, cells, electrolysis process, etc., can solve the problem of excessive pH rise, and achieve the effects of reducing operating costs, convenient operation, and simple process flow

Inactive Publication Date: 2019-05-28
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem that the pH of the catholyte in the existing microbial electrolytic cell rises too fast, the present invention provides a method and device for regulating the pH of the cathode of the microbial electrolytic cell and enhancing hydrogen production by in-situ hydrogen oxidation

Method used

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  • Device and method for regulating and controlling pH and reinforcing hydrogen production through in-situ hydrogen oxidation method
  • Device and method for regulating and controlling pH and reinforcing hydrogen production through in-situ hydrogen oxidation method

Examples

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Embodiment 1

[0024] Such as figure 1 , figure 2 In this embodiment, the in-situ hydrogen oxidation method adjusts pH and enhances hydrogen production. The device includes a microbial electrolytic cell 3, which includes two cathode chambers and an anode chamber 301. The volume of the anode chamber and the cathode chamber is set according to actual conditions. In this embodiment, the volume of the anode compartment 301 is 90 mL, and the volume of the cathode compartment is 150 mL. To facilitate the understanding of the present invention, the two cathode chambers are named the first cathode chamber 302 and the second cathode chamber 303, respectively. The anode chamber 301 is provided between the two cathode chambers, between the anode chamber and the first cathode chamber 302, and The anode chamber and the second cathode chamber 303 are separated by a cation exchange membrane 304. The cation exchange membrane can be an existing product, for example, the product of the following company: Mem...

Embodiment 2

[0035] The catholyte uses 50mM PBS, and the rest of the device structure is the same as in Example 1.

[0036] The method of applying the above-mentioned device to adjust pH and enhance hydrogen production by in-situ hydrogen oxidation method includes the following steps:

[0037] Connect the anode 307 of the anode chamber to the positive pole of the voltage stabilizer 5, the cathode of the first cathode chamber 302 connects the resistor 7 (1ohm) to the negative pole of the stabilizer 5, and the cathode of the second cathode chamber 303 connects to the voltage stabilizer 5. Connect to the positive pole.

[0038] The water inlet pump 2 continuously pumps the anode electrode liquid in the anode water inlet tank 1 into the anode chamber 301, and the water outlet 306 collects the water to the anode water outlet tank 6 with a hydraulic residence time of 10h. The water pump 11 pumps the electrolyte in the electrolyte tank 10 into the first cathode chamber 302 and the second cathode chambe...

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Abstract

The invention discloses a device and method for regulating and controlling the pH and reinforcing hydrogen production through an in-situ hydrogen oxidation method. The device comprises a microbial electrolytic cell of the following structure: the microbial electrolytic cell comprises two cathode chambers and an anode chamber formed between the two cathode chambers, and the anode chamber and the adjacent cathode chambers are formed at intervals through cationic exchange films; the anode chamber is provided with a water inlet and a water outlet and internally provided with an anode which is connected with a positive electrode of an external power supply; each cathode chamber is provided with an electrolyte water inlet-outlet and a hydrogen collection port, and internally provided with a cathode; and the two cathodes are connected with the positive electrode and a negative electrode of the external power supply correspondingly, and the positive and negative electrode connection modes areperiodically exchanged. The technological process is simple, operation is convenient, hydroxide is applied to the cathodes of the microbial electrolytic cell, hydrogen generated in the normal operation process can be used in situ, the yield of the hydrogen can also be increased, the purpose of treating waste through waste is achieved, the operating cost is reduced to the largest extent, the deviceand the method can be applied to treatment of municipal sewage, and electricity and hydrogen production is achieved.

Description

Technical field [0001] The invention belongs to the technical field of domestic sewage treatment, and specifically relates to a method and a device for adjusting pH and enhancing hydrogen production by an in-situ hydrogen oxidation method, which adopts the combined effect of electrochemical redox and microbial power generation technology. Background technique [0002] The microbial electrolysis cell (MEC) is a new type of electrochemical system. The electro-generating bacteria at the anode degrade the organic matter in the solution, and the generated electrons are transferred to the anode through the electron carrier located in the outer membrane of the cell, and then reach the cathode through the external circuit. It reaches the cathode through the proton exchange membrane or directly through the electrolyte, and combines with electrons to generate hydrogen under the action of an external low-voltage power supply and a catalyst. This device can not only realize water pollution co...

Claims

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Application Information

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IPC IPC(8): C25B5/00C25B1/10C25B9/08C25B15/02C25B9/19
CPCY02E60/36
Inventor 杨玉立贺震宋海亮秦墨涵张利民
Owner NANJING NORMAL UNIVERSITY
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