Liquid flow double-chamber microbial fuel cell experimental device

Abstract

The utility model discloses a liquid flow double-chamber microbial fuel cell experimental device. The system is mainly composed of a data acquisition system, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, a sixth wire, a seventh wire, an eighth wire, a ninth wire, a tenth wire, an eleventh wire, a load, a porous anode electrode, a porous cathode electrode, a proton exchange membrane, an anode chamber, a cathode chamber, a first circulating pump, a second circulating pump and an anode electrolyte storage tank. The device is composed of a cathode electrolyte storage tank, a first temperature control heater, a second temperature control heater, a first temperature sensor, a second temperature sensor, a pH sensor, a first electric heating wire, a second electric heating wire, a first electrolyte guide pipe, a second electrolyte guide pipe, a third electrolyte guide pipe, a fourth electrolyte guide pipe, a fifth electrolyte guide pipe and a sixth electrolyte guide pipe. The output power and the operation stability of the microbial fuel cell are improved, the controllability of experimental variables is improved, and rapid parameter regulation and control and acquisition are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial fuel cells, in particular to an experimental device for a liquid-flow dual-chamber microbial fuel cell. Technical Background

[0002] A microbial fuel cell is a technology that directly converts the chemical energy in organic matter into electrical energy by using the metabolic activities of microorganisms, and is mainly applied in fields such as energy production, environmental remediation, and wastewater treatment. In recent years, it has received much attention. Due to the low output power of microbial fuel cells, it is still in the stage of laboratory research and small-scale pilot operation. At the same time, there are technical problems in microbial fuel cells such as difficult control of reaction temperature, low and unstable power generation, and complex operation procedures. In addition, during the experimental research process of microbial fuel cells, it is difficult to regulate and control the operating parameters, and the electrolyte concentration drops significantly in a short time, resulting in large errors in experimental results. Therefore, optimizing the system structure of microbial fuel cells has become a key link in this technology. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an experimental device for a liquid-flow dual-chamber microbial fuel cell, which adopts a continuous feeding method to make the electrolyte circulate and flow, realizes forced convection inside the reactor, enhances the liquid mass transfer process of reactants and products, stores more electrolyte through an electrolyte storage tank to maintain the stability of the electrolyte concentration within a certain period of time, avoids the influence of the sharp drop in electrolyte concentration on experimental results, and can extend the stable power generation time, improve the controllability of experimental variables, directly heats the electrolyte by a heater to maintain the reaction temperature, realizes real-time monitoring of the state of the microbial fuel cell through a data acquisition system, realizes fast parameter regulation and acquisition, uses a porous electrode to increase the enrichment area of microorganisms, reduces the internal resistance by shortening the electrode spacing to reduce power loss, and provides the output power of the microbial fuel cell;

[0004] The utility model is mainly realized through the following technical solutions. An experimental device for a liquid-flow dual-chamber microbial fuel cell mainly consists of a data acquisition system, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, a sixth wire, a seventh wire, an eighth wire, a ninth wire, a tenth wire, an eleventh wire, a load, a porous anode electrode, a porous cathode electrode, a proton exchange membrane, an anode chamber, a cathode chamber, a first circulation pump, a second circulation pump, an anode electrolyte storage tank, a cathode electrolyte storage tank, a first temperature control heater, a second temperature control heater, a first temperature sensor, a second temperature sensor, a pH sensor, a first heating wire, a second heating wire, a first electrolyte conduit, a second electrolyte conduit, a third electrolyte conduit, a fourth electrolyte conduit, a fifth electrolyte conduit, and a sixth electrolyte conduit;

[0005] The anode chamber and the cathode chamber are separated by a proton exchange membrane in the middle. The porous anode electrode and the porous cathode electrode are respectively located inside the anode chamber and the cathode chamber. The porous anode electrode and the porous cathode electrode are connected to the left and right ends of the load through the first wire and the second wire respectively. The data acquisition system is connected to the left and right ends of the load through the third wire and the fourth wire respectively. The pH sensor is located inside the anode chamber and is connected to the data acquisition system through the fifth wire;

[0006] The anode electrolyte storage tank is located on the left side of the anode chamber, and the cathode electrolyte storage tank is located on the right side of the cathode chamber. The top of the anode electrolyte storage tank is connected to the top of the anode chamber through the first electrolyte conduit. The bottom of the anode electrolyte storage tank is connected to the first circulation pump through the second electrolyte conduit. The first circulation pump is then connected to the bottom of the anode chamber through the third electrolyte conduit. The top of the cathode electrolyte storage tank is connected to the top of the cathode chamber through the fourth electrolyte conduit. The bottom of the cathode electrolyte storage tank is connected to the second circulation pump through the fifth electrolyte conduit. The second circulation pump is then connected to the bottom of the cathode chamber through the sixth electrolyte conduit;

[0007] The first heating wire and the second heating wire are respectively located inside the anode electrolyte storage tank and the cathode electrolyte storage tank. The first heating wire is connected to the first temperature control heater through the sixth wire and the seventh wire. The second heating wire is connected to the second temperature control heater through the eighth wire and the ninth wire. The first temperature sensor and the second temperature sensor are respectively connected to the first temperature control heater and the second temperature control heater through the tenth wire and the eleventh wire.

[0008] The beneficial effects of the present utility model are: improving the output power and operation stability of the microbial fuel cell, improving the controllability of experimental variables, and realizing fast parameter regulation and acquisition. Description of the Drawings

[0009] Figure 1 : A schematic diagram of an experimental device for a liquid flow double-chamber microbial fuel cell. Detailed Embodiments

[0010] The present utility model discloses an experimental device for a liquid flow double-chamber microbial fuel cell, and the present utility model will be described in detail below with reference to the accompanying drawings of the specification: As Figure 1As shown in the figure, a liquid flow dual-chamber microbial fuel cell experimental device mainly consists of a data acquisition system 35, a first wire 2, a second wire 31, a third wire 33, a fourth wire 34, a fifth wire 1, a sixth wire 7, a seventh wire 10, an eighth wire 26, a ninth wire 24, a tenth wire 11, an eleventh wire 23, a load 32, a porous anode electrode 4, a porous cathode electrode 29, a proton exchange membrane 17, an anode chamber 16, a cathode chamber 18, a first circulation pump 14, a second circulation pump 20, an anode electrolyte storage tank 8, a cathode electrolyte storage tank 28, a first temperature control heater 9, a second temperature control heater 25, a first temperature sensor 12, a second temperature sensor 22, a pH sensor 3, a first heating wire 6, a second heating wire 27, a first electrolyte conduit 5, a second electrolyte conduit 13, a third electrolyte conduit 15, a fourth electrolyte conduit 30, a fifth electrolyte conduit 21, and a sixth electrolyte conduit 19;

[0011] When the electrochemical unit is working, the anode chamber 16 and the cathode chamber 18 are separated by the proton exchange membrane 17. The porous anode electrode 4 and the porous cathode electrode 29 are respectively located inside the anode chamber 16 and the cathode chamber 18. The porous anode electrode 4 and the porous cathode electrode 29 are respectively connected to the left and right ends of the load 32 through the first wire 2 and the second wire 31 to supply power to the load 32. The data acquisition system 35 is connected to the left and right ends of the load 32 through the third wire 33 and the fourth wire 34. The pH sensor 3 is located inside the anode chamber 16 and is connected to the data acquisition system 35 through the fifth wire 1. When the data acquisition system 35 is powered on, the working voltage at both ends of the load 32 and the pH value of the electrolyte inside the anode chamber 16 are monitored in real time and stored in the data acquisition system 35.

[0012] When the electrolyte circulation unit is working, the anolyte storage tank 8 is located on the left side of the anodic chamber 16, and the catholyte storage tank 28 is located on the right side of the cathodic chamber 18. The top of the anolyte storage tank 8 is communicated with the top of the anodic chamber 16 through the first electrolyte conduit 5. The bottom of the anolyte storage tank 8 is communicated with the first circulation pump 14 through the second electrolyte conduit 13. The first circulation pump 14 is further communicated with the bottom of the anodic chamber 16 through the third electrolyte conduit 15. The top of the catholyte storage tank 28 is communicated with the top of the cathodic chamber 18 through the fourth electrolyte conduit 30. The bottom of the catholyte storage tank 28 is connected to the second circulation pump 20 through the fifth electrolyte conduit 21. The second circulation pump 20 is further communicated with the bottom of the cathodic chamber 18 through the sixth electrolyte conduit 19. When the first circulation pump 14 is powered on, the electrolyte in the anolyte storage tank 8 flows through the second electrolyte conduit 13 and the third electrolyte conduit 15 to reach the inside of the anodic chamber 16, and then flows back to the anolyte storage tank 8 through the first electrolyte conduit 5. When the second circulation pump is powered on, the electrolyte in the catholyte storage tank 28 flows through the fifth electrolyte conduit 21 and the sixth electrolyte conduit 19 to reach the inside of the cathodic chamber 18, and then flows back to the catholyte storage tank 28 through the fourth electrolyte conduit 30, realizing the circulation flow of the electrolyte, realizing the forced convection of the electrolyte inside the anodic chamber 16 and the cathodic chamber 18, and regulating the flow rate of the electrolyte by the circulation pump to meet different experimental requirements;

[0013] When the heat preservation unit is working, the first heating wire 6 and the second heating wire 27 are respectively located inside the anolyte storage tank 8 and the catholyte storage tank 28. The first heating wire 6 is connected to the first temperature control heater 9 through the sixth wire 7 and the seventh wire 10. The second heating wire 27 is connected to the second temperature control heater 25 through the eighth wire 26 and the ninth wire 24. The first temperature sensor 12 and the second temperature sensor 22 are respectively connected to the first temperature control heater 9 and the second temperature control heater 25 through the tenth wire 11 and the eleventh wire 23. The first temperature control heater 9 and the second temperature control heater 25 respectively control the on-off of the first heating wire 6 and the second heating wire 27. The first temperature sensor 12 and the second temperature sensor 22 respectively monitor the temperatures of the anolyte storage tank 8 and the catholyte storage tank 28 and feedback to the first temperature control heater 9 and the second temperature control heater 25 through the tenth wire 11 and the eleventh wire 23 respectively. When the temperatures of the electrolytes in the anolyte storage tank 8 and the catholyte storage tank 28 are higher than the set temperature, the first heating wire 6 and the second heating wire 27 are powered off. When the temperatures of the electrolytes in the anolyte storage tank 8 and the catholyte storage tank 28 are lower than the set temperature, the first heating wire 6 and the second heating wire 27 are powered on, realizing the control of the reaction temperature, and the temperature of the temperature control heater can be specified to meet the temperature required by the reaction, and the temperature regulation can be implemented under any environmental conditions.

Claims

1. An experimental device for a liquid-flow dual-chamber microbial fuel cell, characterized in that: It mainly consists of a data acquisition system (35), a first wire (2), a second wire (31), a third wire (33), a fourth wire (34), a fifth wire (1), a sixth wire (7), a seventh wire (10), an eighth wire (26), a ninth wire (24), a tenth wire (11), an eleventh wire (23), a load (32), a porous anode electrode (4), a porous cathode electrode (29), a proton exchange membrane (17), an anode chamber (16), a cathode chamber (18), a first circulation pump (14), a second circulation pump (20), an anode electrolyte storage tank (8), a cathode electrolyte storage tank (28), a first temperature-controlled heater (9), a second temperature-controlled heater (25), a first temperature sensor (12), a second temperature sensor (22), a pH sensor (3), a first heating wire (6), a second heating wire (27), a first electrolyte conduit (5), a second electrolyte conduit (13), a third electrolyte conduit (15), a fourth electrolyte conduit (30), a fifth electrolyte conduit (21), and a sixth electrolyte conduit (19); The anode chamber (16) and the cathode chamber (18) are separated by the proton exchange membrane (17). The porous anode electrode (4) and the porous cathode electrode (29) are respectively located inside the anode chamber (16) and the cathode chamber (18). The porous anode electrode (4) and the porous cathode electrode (29) are respectively connected to the left and right ends of the load (32) through the first wire (2) and the second wire (31). The data acquisition system (35) is connected to the left and right ends of the load (32) through the third wire (33) and the fourth wire (34). The pH sensor (3) is located inside the anode chamber (16), and the pH sensor (3) and the data acquisition system (35) are connected through the fifth wire (1); The anode electrolyte storage tank (8) is located on the left side of the anode chamber (16), and the cathode electrolyte storage tank (28) is located on the right side of the cathode chamber (18). The top of the anode electrolyte storage tank (8) is communicated with the top of the anode chamber (16) through the first electrolyte conduit (5). The bottom of the anode electrolyte storage tank (8) is communicated with the first circulation pump (14) through the second electrolyte conduit (13). The first circulation pump (14) is then communicated with the bottom of the anode chamber (16) through the third electrolyte conduit (15). The top of the cathode electrolyte storage tank (28) is communicated with the top of the cathode chamber (18) through the fourth electrolyte conduit (30). The bottom of the cathode electrolyte storage tank (28) is connected to the second circulation pump (20) through the fifth electrolyte conduit (21). The second circulation pump (20) is then communicated with the bottom of the cathode chamber (18) through the sixth electrolyte conduit (19); The first heating wire (6) and the second heating wire (27) are respectively located inside the anode electrolyte storage tank (8) and the cathode electrolyte storage tank (28). The first heating wire (6) is connected to the first temperature control heater (9) through the sixth wire (7) and the seventh wire (10). The second heating wire (27) is connected to the second temperature control heater (25) through the eighth wire (26) and the ninth wire (24). The first temperature sensor (12) and the second temperature sensor (22) are respectively connected to the first temperature control heater (9) and the second temperature control heater (25) through the tenth wire (11) and the eleventh wire (23).

Images