Photocatalytic biosynthesis method of H2O2 based on microbial fuel cell

Abstract

The invention provides a photocatalytic biosynthesis method of H2O2 based on a microbial fuel cell, which comprises the following specific steps: 1) filling an anode chamber of the microbial fuel cell with anolyte, filling a cathode chamber of the microbial fuel cell with catholyte, and enabling the cell to run in the sun and generate current; 2) after the current is stable, removing the catholyte; and dividing the cathode chamber into a first cathode chamber and a second cathode chamber by using a filter membrane, respectively adding algae gel beads and an M9 culture medium, placing the cell in the sun, and generating H2O2 in the second cathode chamber; chlorella is used for absorbing carbon dioxide generated by the anode, high-purity oxygen generated through photosynthesis serves as an electron acceptor, the dissolved oxygen amount of the cathode and the oxidation-reduction performance of the cell are improved, and then the yield of H2O2 is increased; meanwhile, the self-sustaining power generation of the cathode microbial fuel cell is realized by utilizing the spontaneous photosynthesis of the microalgae, so that the recycling effect is achieved, and the method is a dual-function technology for realizing sewage treatment and energy output and has a good development prospect.

Description

technical field [0001] This application relates to the field of water pollution treatment and energy recovery, especially a kind of photocatalyzed biosynthesis based on microbial fuel cells 2 o 2 Response method. Background technique [0002] h 2 o 2 It is considered to be one of the greenest oxidants with strong oxidizing ability and is widely used in medical, industrial, environmental pollution control and other fields. h 2 o 2 Currently mainly produced through an anthraquinone oxidation process, however, due to the H 2 o 2 Explosive risks exist in transport, storage and handling, develop new processes to achieve H 2 o 2 The distributed on-demand production of , has been the goal of researchers. [0003] In an electrochemical system, the cathode can convert oxygen molecules into H through a selective two-electron reduction process. 2 o 2 , at Fe 2+ Catalysts using electrochemical in situ reduction of H 2 o 2 Initiating the Fenton reaction to achieve the remo...

AI Technical Summary

Problems solved by technology

However, existing microbial fuel cell-based H 2 o 2 The in situ synthesis and utilization technology is carried out in a double-chamber electrolytic cell. Due to the low concentration of dissolved oxygen in the catholyte, the H 2 o 2 The production rate of H is relatively slow. Some reports use aeration technology to increase the concentration of dissolved oxygen in the cathode, but the oxygen purity increased by this method is poor, which is harmful to the production of H 2 o 2 Less affected

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