Method for improving electron transfer capacity and output power of microbial fuel cell

Abstract

The invention provides a method for improving the electron transfer capacity and output power of a microbial fuel cell, which is characterized in that antibiotics containing beta-lactam rings are added into fuel of the microbial fuel cell in a proportion of between 10 and 50mg / L. The antibiotics containing the beta-lactam rings are added into the fuel of the cell, and can break the integrity of cell membranes of microbes under the condition of small dose without influencing the activity of cells. Therefore, electrons can be transferred to the surface of an anode from the inside of the cells, the transfer resistance of the electrons is reduced greatly, the electron transfer capacity is improved, the generation efficiency of current is improved, the power output is improved, and the utilization capacity of the microbes on substrates is not reduced; and the greatest output power of the microbial fuel cell is improved greatly, and simultaneously penicillin added in the fuel can also be degraded by the microbial fuel cell without causing secondary environmental pollution.

Description

technical field [0001] The invention relates to a method for improving the performance of the microbial fuel cell, specifically a method for improving the electron transfer capability and output power of the microbial fuel cell. Background technique [0002] With the development of society, the problem of energy shortage has become increasingly prominent, and the extensive use of fossil fuels has caused serious environmental problems. The development of new clean energy and the adjustment of energy structure have become the consensus of the world. Microbial fuel cell (MFC) is a new type of device that uses microorganisms to directly convert chemical energy in biomass into electrical energy. Compared with conventional fuel cells, MFC uses microorganisms instead of expensive chemical catalysts, so it has more advantages: (1) a wide range of fuel sources, especially organic waste water and other wastes can be used; (2) the reaction conditions are mild, and it can be Operable; ...

AI Technical Summary

Problems solved by technology

Although these studies can increase the output power of the battery by adding intermediaries, most of the commonly used electron transfer intermediates are expensive. Compared with the power provided by biofuel cells, the cost of adding mediators is too high, and the power increase is limited. , most of which are toxic to microorganisms and are not suitable for use in open environments

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