Self-circulating air cathode microbial fuel cell and method based on bubble buoyancy

Abstract

The invention discloses a self-circulation air cathode microbial fuel cell based on bubble buoyancy and a method. The self-circulation air cathode microbial fuel cell based on bubble buoyancy comprises an anode chamber and a cathode chamber; the cathode chamber is located above the anode chamber, and the cathode chamber communicates with the anode chamber; the self-circulation air cathode microbial fuel cell is characterized in that the upper part of the cathode chamber has a taper with a small upper part and a large lower part, a vapor-liquid outlet is formed in a top end of the cathode chamber, and the vapor-liquid outlet communicates with a storage device arranged above the cathode chamber through a first pipeline; the inside diameter of the first pipeline is the same as the diameter of a bubble generated by a bubbling sieve, and the storage device communicates with the anode chamber through a second pipeline; according to the self-circulation air cathode microbial fuel cell disclosed by the invention, the density difference of working media is used as the transmission power of substance, an air pump and height difference are fully used to realize the natural circulation of the substance, the cell performance is improved, the operation cost is reduced, and the purpose of reducing the energy consumption is achieved; and the self-circulation air cathode microbial fuel cell can be widely used in the fields of energy, chemical industry, environmental protection, etc.

Description

Technical field [0001] The invention relates to a microbial fuel cell, in particular to a self-circulating air cathode microbial fuel cell and method based on bubble buoyancy. Background technique [0002] Microbial Fuel Cells (MFCs) is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy. It has a wide range of fuel sources, mild reaction conditions, good biocompatibility, and waste water while generating electrical energy. Dealing with unique advantages has become a hot spot for global renewable energy researchers. Among them, the air cathode microbial fuel cell, which uses oxygen in the air as the cathode electron acceptor, is a kind of potential large-scale application. Scholars at home and abroad have carried out in-depth and extensive research on the optimization of air cathode catalysts and the optimization of materials. Through a large number of experimental studies, the performance and cost control of the air ca...

AI Technical Summary

Problems solved by technology

[0003] Cho, the MH team invented a new air cathode microbial fuel cell structure that uses air pumps and waste water pumps to circulate, which has the advantages of low cost and good mass transfer capacity, but in actual operation, the use of multiple pumps will be difficult. Increases energy consumption and causes unnecessary energy loss in actual processing

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