Electricity generation device adopting hollow fiber membrane module as anode of methane-driven microbial fuel cell and electricity generation method

Abstract

The invention relates to the field of microbial electrochemistry, and particularly relates to an electricity generation device adopting a hollow fiber membrane module as the anode of a methane-drivenmicrobial fuel cell and an electricity generation method. The electricity generation device comprises an anode chamber and a cathode chamber, wherein the anode chamber takes the conductive hollow fiber membrane module as an electrode material, the hollow fiber membrane module continuously provides a gas substrate methane as an electron donor for the microbial fuel cell by being connected with a gas steel cylinder, and the cathode chamber takes carbon felt as an electrode material. The electricity generation device is suitable for all microbial fuel cell systems taking gas as a substrate, and the improved hollow fiber membrane module not only can conduct electricity, but also improves the mass transfer efficiency of the gas substrate, so that the electricity generation efficiency of the microbial fuel cell is improved. According to the invention, a fiber membrane reactor and a microbial electrochemical system are integrated together, so that the development of a microbial fuel cell technology taking methane as a substrate and the recycling of energy sources are promoted, and the emission of greenhouse gas methane is also reduced at the same time.

Description

technical field [0001] The invention relates to the field of microbial electrochemistry, in particular to a hollow fiber membrane module used as an electricity generating device and an electricity generating method for an anode of a methane-driven microbial fuel cell. Background technique [0002] Microbial fuel cells are an emerging electrochemical device that converts chemical energy in organic matter into electrical energy using electroactive bacteria as biocatalysts. The electron transfer process from electroactive bacteria to electrodes is crucial for the electricity generation performance of microbial fuel cells. Electron transfer has been reported to involve indirect electron transfer processes mediated by intermediate mediators or electron shuttles, and direct electron transfer processes mediated by membrane-associated cytochromes or nanowires. Microbial fuel cells can utilize simple compounds (such as acetate, propionate, butyrate, glucose, ethanol, and xylose) or ...

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Problems solved by technology

However, conventional fiber membranes are not electrically conductive and cannot be used as anode materials for microbial fuel cells

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