Regularly polygonal expandable air cathode microbial fuel cell device

Abstract

The invention discloses a regularly polygonal expandable air cathode microbial fuel cell device which comprises a device shell, a device sealing cover, and anode chambers and cathode chambers which are distributed at intervals. Different material electrodes are arranged in the anode chambers or the cathode chambers, anode chambers or the cathode chambers are communicated through runners with baffles, the anode chambers and the cathode chambers are communicated through small holes with baffles, and a water inlet and a water outlet are respectively formed in the side walls of the shell. Conductive lines are arranged at the bottoms of the anode chambers and the cathode chambers in the device shell, and are used for communicating the anode chambers and the cathode chambers and external loads. Small holes are formed in the device sealing cover above the cathode chambers, so as to communicate the cathode chambers with the external air to promote cathodic reaction. The regularly polygonal expandable air cathode microbial fuel cell device has a simple structure and can be infinitely expanded according to practical demand, the cathode and anode materials and mounting forms thereof can be changed as required, the any communication of external circuits among the anode chambers and the cathode chambers can be realized through the baffles of the runners, so that sewage can be purified and used for generating power.

Description

technical field [0001] The invention relates to a microbial fuel cell, in particular to an infinitely expandable microbial fuel cell device for sewage treatment. Background technique [0002] A microbial fuel cell is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy. The basic working principle of microbial fuel cell is: in the anaerobic environment of the anode chamber, the organic matter is decomposed under the action of microorganisms and releases electrons and protons, and the electrons rely on suitable electron transfer mediators to effectively transfer between the biological components and the anode. And it is transmitted to the cathode through an external circuit to form a current, and the proton is transmitted to the cathode through an intermediate transfer material such as a proton exchange membrane, and the oxidant (usually oxygen) obtains electrons at the cathode and is reduced and combined with the prot...

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Problems solved by technology

Although at present, with the continuous improvement of the electrode and reactor configuration of microbial fuel cells, the energy density of its monomers is increasing rapidly, but there are still the following problems: the battery energy density is low; the types of waste water that can be used as substrates are relatively single; most of the batteries are intermittent. The structure of the electrode material is single, and the amount of microorganisms producing electricity is small, which is not conducive to energy production; the structure of the battery reactor device is complex and cannot be expanded; the battery packs cannot be connected in series and parallel according to the demand, which seriously limits its practical application. and application

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