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Single and double chamber coupled microbial fuel cell stack and method for self-adjusting pH value

A fuel cell stack and fuel cell technology, applied in the direction of biochemical fuel cells, fuel cells, circuits, etc., can solve problems such as hindering the stacking of microbial fuel cells, affecting the practical application of microbial fuel cells, and unfavorable use of electrolytes, etc., to achieve good Application prospects, avoiding electrolyte short circuit, and solving the effect of media acidification

Active Publication Date: 2017-01-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, some scholars have proposed to prevent the acidification of the anolyte by circulating the anode and cathode solution (Freguia et al.2008), but this method is likely to cause the formation of biofilm in the cathode chamber and blockage, which is not conducive to the use of more efficient electrolysis liquid
[0006] Therefore, the problem of medium acidification hinders the scale-up of microbial fuel cell stacks and affects the practical application of microbial fuel cells.

Method used

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  • Single and double chamber coupled microbial fuel cell stack and method for self-adjusting pH value
  • Single and double chamber coupled microbial fuel cell stack and method for self-adjusting pH value
  • Single and double chamber coupled microbial fuel cell stack and method for self-adjusting pH value

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Effect test

Embodiment 1

[0032] Embodiment 1: the method for self-regulating pH value of microbial fuel cell stack, it is characterized in that: comprise the steps:

[0033] A. Make a single-chamber microbial fuel cell. The cathode of the single-chamber microbial fuel cell is a carbon cloth modified with platinum on one side and treated with hydrophobic treatment. The platinum-containing catalyst side faces the middle chamber and the other side faces the air; and in the battery chamber The chamber is equipped with a culture solution inlet and a waste solution outlet;

[0034] B. Make a dual-chamber microbial fuel cell that adopts catholyte and separates the cathode chamber and the anode chamber with a proton exchange membrane; set the culture solution inlet and the waste liquid outlet in the anode chamber, and set the electrolyte inlet in the cathode chamber and electrolyte outlet;

[0035] C. Inoculate single-chamber microbial fuel cells and double-chamber microbial fuel cells with activated sludge ...

Embodiment 2

[0041] Embodiment 2: the method for microbial fuel cell stack self-regulation pH value, comprises the steps:

[0042] A. Make two single-chamber microbial fuel cells. The cathode of the single-chamber microbial fuel cell is carbon paper modified with platinum on one side and treated with hydrophobic treatment. The platinum-containing catalyst side faces the middle chamber and the other side faces the air; and in the battery chamber The chamber is equipped with a culture solution inlet and a waste solution outlet;

[0043] B. Make two double-chamber microbial fuel cells that adopt the catholyte and separate the cathode chamber and the anode chamber with a proton exchange membrane; and set the culture solution inlet and the waste liquid outlet in the anode chamber, and set the electrolyte in the cathode chamber Import and export of electrolyte;

[0044] C. Inoculate the single-chamber microbial fuel cell and the dual-chamber microbial fuel cell with activated sludge so that it ...

Embodiment 3

[0048] Embodiment 3: the method for microbial fuel cell stack self-regulation pH value, comprises the steps:

[0049] A, making n single-chamber microbial fuel cells that only use air cathodes; the single-chamber microbial fuel cells are carbon papers modified with platinum and treated with water repellent on one side, the platinum-containing catalyst faces the middle chamber, and the other side faces the air ; And the culture solution inlet and the waste solution outlet are set in the battery chamber; n is a natural number ≥ 3;

[0050] B, make n only adopt catholyte and use proton exchange membrane to separate the dual-chamber microbial fuel cell of cathode chamber and anode chamber; and electrolyte outlet;

[0051] C. Inoculate n single-chamber microbial fuel cells and n double-chamber microbial fuel cells with activated sludge so that they can generate continuous current;

[0052] D. Assembling the microbial fuel cell stack: connect the culture solution inlet of the anod...

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Abstract

The invention discloses a single-double chamber coupling MFC (microbial fuel cell) stack and a self-regulation method of the PH value. The single-double chamber coupling MFC stack comprises n single-chamber MFCs and n double-chamber MFCs, and n is a natural number larger than or equal to 1. The single-double chamber coupling MFC stack is characterized in that each single-chamber MFC adopts an air cathode, and each double-chamber MFC adopts catholyte and is divided into a cathode chamber and an anode chamber through a proton exchange membrane; a waste liquor outlet of the anode chamber of the first double-chamber MFC is connected with a nutrient solution inlet of the first single-chamber MFC; and a waste liquor outlet of the first single-chamber MFC is connected with a nutrient solution inlet of the anode chamber of the second double-chamber MFC. The single-double chamber coupling MFC stack and the self-regulation method of the PH value can be widely applied to the fields of biology, energy, environment protection and the like, the problem of culture medium acidification is solved, and amplified stacking of the cell stack can be realized as required.

Description

technical field [0001] The present invention relates to a microbial fuel single-cell stack, in particular to a single-double-chamber coupling microbial fuel cell stack and a method for self-adjusting pH value. Background technique [0002] Microbial fuel cell (MFC) can use electrogenic bacteria to directly degrade organic matter to generate electricity, and is considered to be a very potential technology for generating energy from wastewater. However, the voltage of a single microbial fuel cell is low, and multiple microbial fuel cells need to be connected in series on the circuit to increase the voltage to meet the needs of practical applications. At the same time, the wastewater treatment capacity of a single microbial fuel cell is limited, and multiple microbial fuel cells need to be connected in series on the waterway to improve the wastewater treatment effect and wastewater treatment capacity. [0003] Traditional microbial fuel cell stacks simply use dual-chamber micr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/2404H01M8/2465H01M8/04694
CPCH01M8/04694H01M8/16Y02E60/50
Inventor 李俊邹文天叶丁丁朱恂廖强王宏陈蓉丁玉栋
Owner CHONGQING UNIV