Device for microorganism electrochemical reduction of carbon dioxide using microorganisms

Abstract

The invention discloses a device for microorganism electrochemical reduction of carbon dioxide, in order to solve the problems of the prior art that carbon dioxide is difficult to transfer between solution and microorganisms, the surface area of a microorganism electrochemical cathode material is low and the like. The invention comprises: 1) adopting the microorganism as a cathode catalyst for electrochemical reduction of carbon dioxide and converting carbon dioxide into an organic product; 2) adopting a porous metallic hollow fiber cathode and connecting an external carbon dioxide bag throughan air guide pipe so as to supply an inorganic carbon source for the growth of the microorganisms on the porous metallic hollow fiber cathode. According to the method provided by the invention, a three-dimensional cathode material with large surface area and being beneficial to direct transmission of carbon dioxide can be prepared; the method is beneficial to the growth of the microorganisms on the cathode; the device for electrochemical reduction of carbon dioxide provided by the invention is low in cost, can be used for a long time, is high in use ratio of energy, and is suitable for large-scale application in carbon dioxide reduction, electrode material preparation and microorganism electrolytic tanks.

Description

technical field [0001] The invention relates to a device for electrochemical catalytic reduction of carbon dioxide, which is suitable for carbon dioxide reduction, preparation of electrode materials and microbial electrolytic cells. Background technique [0002] Currently, global warming and climate change are attracting the attention of governments and people around the world. Carbon dioxide emissions are generally considered to have a nearly linear relationship with global climate change. Therefore, reducing the concentration of carbon dioxide in the air, reducing the use of fossil fuels, and developing new energy technologies are becoming problems that modern industry and academia are striving to solve. The previous recycling and elimination of carbon dioxide mainly focused on the physical and chemical storage of carbon dioxide by using various porous materials, amino groups, and calcium oxide absorbents. However, these methods cannot completely change the existing form o...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art and solve the problems of difficult transmission of carbon dioxide from solution to microorganisms and the low surface area of ​​microbial electrochemical cathode materials, the present invention proposes a microbial electrochemical system using porous metal hollow fiber cathodes to reduce carbon dioxide. The device can directly transmit carbon dioxide gas to the microbial end through porous metal hollow fiber electrodes to avoid inefficient diffusion of gas, accelerate microbial growth and carbon dioxide conversion

Images