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Microbial fuel cell for treating domestic sewage

A technology for domestic sewage and fuel cells, which is applied in biochemical fuel cells, fuel cells, and components of fuel cells, etc., can solve the problems of a large number of unfavorable microorganisms, narrow application area of ​​catalytic efficiency, small anode surface area, etc., and achieve high power production efficiency. and sewage treatment rate, increase microbial adsorption, good catalytic performance

Inactive Publication Date: 2016-04-13
CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing microbial fuel cells generally have the disadvantage of low electricity production; at the same time, the surface area of ​​the anode in the prior art is generally small, which is not conducive to the attachment of a large number of microorganisms, and the catalytic performance is narrow; in the prior art, platinum is mostly used as Cathodic catalyst, although the catalytic effect is good, but too expensive

Method used

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  • Microbial fuel cell for treating domestic sewage
  • Microbial fuel cell for treating domestic sewage
  • Microbial fuel cell for treating domestic sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1 to Figure 4 As shown, a microbial fuel cell for treating domestic sewage includes a reactor 1 disposed inside the casing 11 and a battery positive electrode 8 and a battery negative electrode 9 arranged outside the casing 11, and the bottom of the battery positive electrode 8 is connected to the reactor 1 One end of the battery negative pole 9 is connected to the other end of the reactor 1; the reactor 1 includes a sealed casing 6 and an anode 2 and a negative electrode 3 arranged in the sealed casing 6, and microorganisms 4 are attached to the surface of the anode 2 and the negative electrode 3, and the anode 2 and the cathode 3 is provided with an ion exchange membrane 7, the anode 2 is connected to the positive electrode 8 of the battery, the cathode 3 is connected to the negative electrode 9 of the battery, and the sealed shell 6 is filled with a medium 5; the medium 5 is domestic sewage; the bottom of the shell 11 is provided with a medium The exc...

Embodiment 2

[0045] Anode 2—surface titanium / nitrogen doped mesoporous graphene airgel was prepared by the following steps:

[0046] Step 1: Add graphite powder and sodium nitrate to the concentrated sulfuric acid at the mass ratio of concentrated sulfuric acid: graphite powder: sodium nitrate 65:1:0.6 in an ice bath, stir and dissolve for 30 minutes, and then add graphite powder: potassium permanganate according to the mass ratio of graphite powder: potassium permanganate Ratio 1:5, add potassium permanganate to the mixed solution, stir for 10 hours, add deionized water to the mixed solution according to the volume ratio of concentrated sulfuric acid: deionized water 1:1, and place the mixture under the condition of a vacuum degree of 0.93 Slowly raise the temperature to 52°C at a rate of 1.2°C / h, keep stirring at a constant temperature of 52°C for 22 hours, then add hydrogen peroxide to the mixed solution according to the volume ratio of concentrated sulfuric acid to hydrogen peroxide (1:...

Embodiment 3

[0049] Cathode 3 - VO 2 / S-AC foam nickel air cathode is made by the following steps:

[0050] Step 1: Mix polyvinyl alcohol and polytetrafluoroethylene evenly according to the mass ratio of 1:1 and prepare a catalytic emulsion with a concentration of 10%. Mix VO2 and S-AC evenly according to the mass ratio of 2:1. Weigh the VO2 / S-AC mixture and the catalytic emulsion at a ratio of 1:3, mix the VO2 / S-AC mixture and the catalytic emulsion by ultrasonic waves for 40 minutes, heat the mixed solution to 65°C, and keep stirring for 2 hours to break the emulsion, and obtain Catalyst layer raw material;

[0051] Step 2: Compress the nickel foam into a 0.6mm sheet by a tablet press, scrape-coat the raw materials of the catalytic layer on the upper surface of the nickel foam, and then react with microwaves for 5 minutes under the conditions of a pressure of 70kPa and a power of 100W. The excess powder is gently swept away to obtain foamed nickel covered with a catalytic layer;

[00...

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Abstract

The invention discloses a microbial fuel cell for treating domestic sewage, and belongs to the field of batteries. The microbial fuel cell for treating domestic sewage disclosed by the invention comprises a reactor arranged inside a shell as well as a cell cathode and a cell anode which are arranged outside the shell, wherein the bottom of the cell cathode is connected to one end of the reactor; the bottom of the cell anode is connected to the other end of the reactor; the reactor comprises a sealing shell as well as a positive electrode and a negative electrode which are arranged in the sealing shell, the surfaces of the positive electrode and the negative electrode are attached with microorganisms, an ion exchange membrane is arranged between the positive electrode and the negative electrode, the positive electrode is connected with the cell cathode, the negative electrode is connected with the cell anode, and the sealing shell is filled with the domestic sewage. The microbial fuel cell has the characteristics that the active areas of the electrode surfaces are relatively large, the electrostatic interaction between the microorganisms and the electrode surfaces is increased, the adsorbability of the microorganisms is improved and the catalytic performance is good, so that the yield of electric quantity and the efficiency of sewage treatment are improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a battery, in particular to a microbial fuel cell for treating domestic sewage. Background technique [0002] As the world's population continues to increase, human beings are increasingly affected by insufficient energy resources and environmental degradation. Therefore, the development of new energy sources has been widely valued, and the use of renewable biomass energy for power generation is an effective means. Microbial fuel cells (MFC), as a new method of using microbial metabolism to generate electricity, has attracted more and more attention in recent years. It is a device that uses microorganisms as a catalyst to convert chemical energy into electrical energy. Microorganisms can metabolize organic substances and generate electrical energy at the same time. It has received extensive attention in the treatment of sewage. However, the existing microbial fuel cells generally have the disadvantage of low electricity produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M4/90H01M4/88H01M8/02
CPCH01M4/8828H01M4/9075H01M4/9083H01M8/0228H01M8/16Y02E60/50Y02P70/50
Inventor 曾丽
Owner CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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