Microbial fuel cell and method for enhancing electricity generation performance of microbial fuel cell

Abstract

The invention provides a microbial fuel cell and a method for enhancing electricity generation performance of the microbial fuel cell. The microbial fuel cell comprises a reactor, a cathode and an anode, wherein either cathode or anode is arranged on one side of the reactor, and the other electrode is arranged in the reactor; the anode is made of carbon felt, and the cathode adopts a gas electrode containing metallic catalyst; the distance between the two electrodes is 0.5-2.0 cm; the lower end of the reactor is provided with a water inlet, and the upper end is provided with a water outlet; the upper part of the reactor is provided with a sealing cover; a reference electrode slot is arranged on the sealing cover; the cathode and the anode are connected by a wire and connected with a load to form a closed loop circuit; anaerobic sludge is inoculated in the reactor, and fuel is introduced into the reactor; and 5-80 mg of microbial solvent Tween is added to every 1L of fuel. The invention has the advantages of great increase of output power, low price, small effect on environment, and easy realization.

Description

technical field [0001] The invention relates to a microbial fuel cell. The invention also relates to a method for improving the electricity production performance of the microbial fuel cell. Background technique [0002] In order to solve the increasingly severe energy shortage and a series of environmental problems caused by fossil fuels, people are constantly looking for new alternative energy sources. Microbial fuel cell (MFC) is a new type of device that uses microorganisms to directly convert chemical energy in biomass into electrical energy. As an ideal new clean energy source, it has become a research hotspot for scientists. MFC has many advantages: ① directly convert the chemical energy in organic matter into electrical energy, and the energy utilization rate is high; ② wide range of raw materials, theoretically any organic matter can be used as a fuel for MFC, including the use of photosynthesis or direct use of various sewage, etc.; ③The operating conditions are ...

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. , and most of these mediators are toxic to microorganisms and are not suitable for use in open environments

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