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Coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method

A bioelectrochemical and coupled technology, applied in chemical instruments and methods, biochemical fuel cells, electrodes, etc., can solve the problems of low hydrogen purity, performance degradation, and large internal resistance, so as to reduce the internal resistance of the system and inhibit methanation , Enhance the effect of hydrogen production performance

Active Publication Date: 2021-03-02
TONGJI UNIV
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Problems solved by technology

[0010] In view of the shortcomings of methanation, large internal resistance, gradual decline in performance and low hydrogen purity in the bioelectrochemical hydrogen production system in the prior art, the primary purpose of the present invention is to provide a coupled bioelectrochemical hydrogen production and purification device

Method used

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  • Coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method
  • Coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method
  • Coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method

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Embodiment 1

[0086] The structure of the coupled bioelectrochemical hydrogen production and purification system of this comparative example is as follows: figure 1 As shown, it includes an electrolysis chamber 1, an anode 2, a cathode 3, a gas collection port 4, a hydrophobic gas-permeable membrane 5, a first wire 6, an external power supply 7, a second wire 8, a resistor 9, a third wire 10, and a collector 11 , air collecting pipe 12, absorption pool 13, air delivery pipe 14 and air bag 15, electrolysis chamber 1 is the cuboid that organic glass material is processed into, and the interior is provided with height and is 5.5cm, and diameter is the cylindrical cavity of 3cm (cavity volume is about 39ml, the effective liquid volume is 30ml), the anode 2 adopts the conductive carbon brush of 3cm * 3cm, is formed by carbon fiber and the wire that diameter is 1mm according to spiral test tube brush sample preparation, the cathode 3 rear side is close to the hydrophobic gas-permeable film 5, uses...

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Abstract

The invention provides a coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method. In the device, a hydrophobic gas permeable membrane is placed close to the rear side of the cathode to collect hydrogen on the cathode side, and then pass through the lye in the absorption pool The negative pressure formed by absorbing the carbon dioxide in the gas production quickly collects the hydrogen generated near the cathode, so as to achieve the purpose of quickly collecting the hydrogen generated in the system and simultaneously realizing the hydrogen purification, making it difficult for the methanogenic bacteria in the electrolyte to come into contact with the hydrogen; At the same time, a methanation inhibitor is added to the electrolyte to chemically inactivate the methyl coenzyme M of the methanogen, preventing the methanogen from using the methyl coenzyme M to consume hydrogen to produce methane, thereby inhibiting methanation; the cathode in the system of the present invention It is in the same room as the anode, which reduces the internal resistance of the system, improves the Coulombic efficiency, and further achieves the purpose of efficient and continuous hydrogen production performance of the system.

Description

technical field [0001] The invention belongs to the technical field of organic waste / waste water, and in particular relates to a coupled bioelectrochemical hydrogen production and purification device, system and hydrogen production method. Background technique [0002] The bioelectrochemical hydrogen production system can convert the chemical energy in organic waste / wastewater into hydrogen (the anode reaction and cathode reaction are shown in formula (1) and formula (2) respectively), and realize their resource utilization. The field of waste water treatment has broad development prospects. [0003] CH 3 COOH+2H 2 O-8e - →2CO 2 ↑+8H + (1) [0004] 8H + +8e - →4H 2 ↑ (2) [0005] Bioelectrochemical hydrogen production systems are divided into two categories: double chamber and single chamber, both of which collect hydrogen through gas diffusion, and the hydrogen contains a certain amount of carbon dioxide and methane. The anode and cathode of the dual-chamber bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/04C25B9/17C25B15/00C02F1/461H01M8/16
CPCH01M8/16C25B15/00C02F1/46104C02F2201/46115C25B1/04C25B11/00C25B9/17Y02E60/36Y02E60/50Y02P70/50
Inventor 张志强张姣王作斌夏四清
Owner TONGJI UNIV
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