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Column-shaped microbial fuel cell without ion exchange membrane or mediator

An ion exchange membrane and fuel cell technology, applied in the field of microbial fuel cells, can solve the problems of increased cost, electron transfer, and large proportion of electric energy consumption, and achieve the effects of reducing construction costs, reducing losses, and speeding up the reaction speed.

Inactive Publication Date: 2010-03-10
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second is that the generated electric energy consumes a large proportion of the internal resistance
Some types of bacteria cannot transfer the generated electrons to the anode, which requires the use of electron transfer mediators, resulting in increased costs

Method used

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  • Column-shaped microbial fuel cell without ion exchange membrane or mediator
  • Column-shaped microbial fuel cell without ion exchange membrane or mediator

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1) Use plexiglass material to make the inner cylinder and outer cylinder of the microbial fuel cell;

[0023] 2) Determine that the effective volume of the cathode and anode reaction chambers is 200-300ml;

[0024] 3) The thickness of the cylindrical cylinder wall is 1-3cm. Under the premise of ensuring sufficient structural strength, the cylindrical cylinder wall should be drilled and hollowed out as much as possible;

[0025] 4) Anode carbon cloth and cathode carbon cloth are attached to the inside and outside of the anode chamber wall respectively;

[0026] 5) Fill the anode chamber with granular activated carbon, and connect the activated carbon with the external circuit with a carbon rod;

[0027] 6) Inject the organic pollutants in the organic wastewater into the anode chamber as electron donors, domesticate the microorganisms in the wastewater as electrogenic bacteria, and use nitrate as the electron acceptor.

[0028] The principle of the microbial fuel cell i...

Embodiment 2

[0030] 1) Use plexiglass materials to make microbial fuel cells;

[0031] 2) Determine the effective volume of the cathode and anode reaction chambers to be 30-50ml;

[0032] 3) The thickness of the cylindrical cylinder wall is 0.5-1cm. Under the premise of ensuring sufficient structural strength, the cylindrical cylinder wall should be drilled and hollowed out as much as possible;

[0033] 4) Anode carbon cloth and cathode carbon cloth are attached to the inside and outside of the anode chamber wall respectively;

[0034] 5) Fill the anode chamber with granular activated carbon, and connect the activated carbon with the external circuit with a carbon rod;

[0035] 6) Inject glucose as electron donor into the anode chamber, and ferricyanide as electron acceptor.

[0036] The design principle of the microbial fuel cell in this embodiment is to meet the miniaturization requirements of the microbial incoming battery and increase the battery potential by reducing the structural ...

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Abstract

The invention discloses a column-shaped microbial fuel cell without an ion exchange membrane or a mediator. The invention adopts a cylindrical two-electrode chamber, wherein an anode chamber is arranged inside and filled with granular active carbon; the active carbon is connected with the anode by a carbon rod; a cathode chamber surrounds outside the anode chamber; and anode and cathode carbon cloth is spaced by a hollow plate with a thickness of 0.5-8cm. Electronic receptor solution is infused in the cathode chamber according to the engineering requirement. The design effectively reduces theinternal resistance, reduces the consumption of electric energy on the internal resistance, increases the electric energy output and effectively removes organic pollutants. In the invention, the ion exchange membranes, aeration and electronic transferring mediators are not needed, thereby the operational cost for construction is reduced, and secondary pollution to the environment by medium substances.

Description

technical field [0001] The invention relates to a microbial fuel cell, in particular to a column type microbial fuel cell without an ion exchange membrane and without a mediator, which reduces internal resistance and improves electricity production efficiency through structural design, and has broad prospects in the field of energy and environment technology. Background technique [0002] As an energy and environmental technology with great development potential, microbial fuel cell technology is attracting attention in the fields of renewable energy and organic wastewater treatment. Generally, a microbial fuel cell is composed of two electrode chambers. The cathode and anode electrodes are respectively arranged in the cathode chamber and the anode chamber. The two electrode chambers are separated by an ion exchange membrane, and the electrodes are connected by an external circuit. In the anode chamber, purely cultured electrogenic bacteria or mixed strains of electrogenic b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M2/18C02F3/34
CPCY02E60/527Y02E60/50
Inventor 李凤祥周启星李白崑
Owner NANKAI UNIV
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