A photo-stimulated biosynthesis of h based on microbial fuel cells 2 o 2 Methods
A fuel cell and biosynthesis technology, applied in biochemical fuel cells, biological water/sewage treatment, electrochemical and biological combination treatment, etc., can solve the problems of slow production rate and poor oxygen purity, avoid energy input and improve efficiency , to avoid the effect of poisonous effect
Active Publication Date: 2022-07-01
JIANGSU UNIV
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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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Embodiment 1
[0043] Example 1 Photocatalytic biosynthesis of H using the biofuel cell 2 O 2
[0044] 1. Preparation of microbial fuel cell I:
[0045] 1) Immerse the cation exchange membrane 5 in a 5% NaCl solution for 24 hours to obtain the pretreated cation exchange membrane 5 after the membrane is hydrated and swelled; 2) The top of the pretreated cation exchange membrane 5 and the The bottom end is sealed and connected to the inner wall of the casing 1 through a silicone gasket, and the anode chamber 8 and the cathode chamber 9 are separated. The volume ratio of the anode chamber 8 and the cathode chamber 9 is 1:2; the anode chamber 8 is provided with an anode electrode 6, and the cathode chamber 9. A cathode electrode 7 is provided inside, and the cathode electrode 7 and the anode electrode 6 are connected through a copper wire 10 provided externally, and a resistor 11 is arranged on the copper wire 10, and its structure is as follows: figure 1 shown.
[0046] 2. Preparation of al...
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Abstract
This application provides a photo-induced biosynthesis of H based on microbial fuel cells 2 O 2 The method includes the following specific steps: 1) filling the anode chamber of the microbial fuel cell with anolyte, filling the cathode chamber with catholyte, and the battery operates in sunlight to generate current; 2) after the current is stabilized, remove the catholyte; filter the cathode with a filter membrane The chamber is divided into a first cathode chamber and a second cathode chamber, algae gel balls and M9 medium are added respectively, the battery is placed under sunlight, and the second cathode chamber produces H 2 O 2 This application utilizes chlorella to absorb the carbon dioxide produced by the anode, and the high-purity oxygen produced by photosynthesis is used as an electron acceptor, which improves the amount of dissolved oxygen in the cathode and the redox performance of the battery, thereby improving the H 2 O 2 At the same time, the spontaneous photosynthesis of microalgae is used to realize the self-sustained power generation of cathode microbial fuel cells to achieve the effect of resource utilization. It is a dual-functional technology that realizes sewage treatment and energy output, and has good development prospects.
Description
technical field [0001] This application relates to the field of water pollution treatment and energy recovery, in particular to a photo-promoted biosynthesis of H based on microbial fuel cells 2 O 2 reaction 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 by anthraquinone oxidation process, however, due to H 2 O 2 Transport, storage and handling present explosive risks, develop new processes to achieve H 2 O 2 The distributed on-demand production of [0003] In electrochemical systems, the cathode can convert oxygen molecules to H through a selective two-electron reduction process. 2 O 2 , in Fe 2+ Isocatalysts utilize electrochemical in situ reduction of generated H 2 O 2 Initiating the Fenton reaction and realizing the removal of refractory organic pollut...
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IPC IPC(8): C25B1/30H01M8/16C02F9/14C02F101/30
CPCC25B1/30H01M8/16C02F9/00C02F2101/30C02F3/005C02F1/4672C02F1/725C02F3/322Y02E60/50
Inventor 成亮武雅婷俞洋洋
Owner JIANGSU UNIV