Self-breathing microbial fuel cell device based on anode array distribution

Abstract

The invention relates to a self-breathing microbial fuel cell device based on anode array distribution. The device comprises a casing, a device sealing cover, a drive mechanism, an anode chamber and an outer circuit, wherein the device casing comprises a self-breathing cathode and a support mechanism, the support mechanism is divided into a conductive part and an insulating part, a water inlet, awater outlet and drive shaft holes are formed in the side wall of the casing respectively, the cathode wraps the anode chamber, a plurality of anode arrays are distributed in the anode chamber, a thread structure is processed at the bottom of each anode, the thread structures form worm drive with drive shafts, each electrode is connected with a wire, and the wires penetrate through the device casing or the sealing cover to be connected with the drive mechanism. The self-breathing microbial fuel cell device has the advantages as follows: through cooperation of array distributed anodes and self-breathing cathodes, attachment of electricity-producing bacteria is promoted, internal resistance of a cell is greatly reduced, and the sewage is purified and can produce electricity.

Description

technical field [0001] The invention relates to a microbial fuel cell, in particular to a self-breathing microbial fuel cell device based on anode array distribution. Background technique [0002] A microbial fuel cell is a device that directly converts chemical energy in organic matter into electrical energy by means of a variety of microorganisms. Compared with traditional fuel cells, microbial fuel cells use microorganisms instead of expensive chemical catalysts, and can purify sewage while generating energy, with great development prospects. A microbial fuel cell is mainly composed of an anode chamber, a cathode chamber and a diaphragm in the middle (mostly a proton exchange membrane). The basic working principle of microbial fuel cells is: in an anaerobic environment, microorganisms suspended in the anode chamber decompose complex macromolecular organic matter into small molecular organic matter, and the microbial community attached to the surface of the anode further ...

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Problems solved by technology

[0003] However, the production capacity of microbial fuel cells is low at this stage, which is not enough for practical application and promotion

Although with the continuous improvement of microbial fuel cell electrode and reactor configuration, its monomer energy density has increased rapidly, but there are still the following problems: the specific surface area of ​​the anode electrode is small, which is not conducive to the attachment and growth of microorganisms; magnetic stirring is often used in laboratories The device improves battery performance, but this undoubtedly increases energy consumption, and it is impossible to add a magnetic stirring device in practical applications; more aeration in the cathode chamber promotes the reduction reaction, but increases the cost; the cost of the proton exchange membrane is too high, and it is easy to increase the internal resistance of the battery ;The battery mostly works intermittently, and the waste water needs to be replaced periodically, which is not conducive to practical application; The structure of the new battery reactor is complicated and most of them cannot be expanded

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