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A supporting quick start device for microbial fuel cell toxicity sensor

A fuel cell and microbial technology, applied in the direction of biochemical fuel cells, fuel cells, fuel cell control, etc., can solve problems such as impact, limiting microbial fuel cell toxicity sensors, inoculation to continuous and stable power generation for a long time, etc.

Active Publication Date: 2022-03-18
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when microbial fuel cells are used to evaluate high-concentration toxic wastewater (such as petrochemical wastewater), highly toxic substances will have a fatal impact on the microorganisms on the anode of the microbial fuel cell, and the natural recovery of the microbial fuel cell is often difficult to achieve good results or even impossible. Microbial fuel cell toxicity sensor needs to be restarted
[0004] However, it takes a long time for microorganisms in microbial fuel cells to inoculate and produce electricity continuously. For example, Gao Yanmei (2017) used double ten microbial fuel cells to evaluate the toxicity of heavy metals. The toxicity sensor needs about 10 days to reach a stable state.
Therefore, the start-up time limits the development of toxicity sensors for microbial fuel cells

Method used

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  • A supporting quick start device for microbial fuel cell toxicity sensor
  • A supporting quick start device for microbial fuel cell toxicity sensor
  • A supporting quick start device for microbial fuel cell toxicity sensor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] Select the intermittent matrix replacement method to replace the matrix, and the obtained voltage varies with time, see Figure 6 . The time to replace the substrate is 3-7 days. The time to replace the substrate is not directly related to the power generation performance. After the culture device obtains a fresh substrate, the voltage recovers quickly and drops at a slow rate. The higher the replacement frequency of the anode and cathode substrates, the more sufficient the nutrients obtained by the microorganisms per unit time, and the more electrons the cathode can transfer. Therefore, the faster the growth rate of the microorganisms, the shorter the culture time will be.

example 2

[0041] Transfer the cultured anode electrode to the supporting microbial fuel cell toxicity sensor, and quickly pass it into the matrix. The voltage change of the toxicity sensor is shown in Figure 7 , the voltage rises rapidly and can reach a steady state within 5 hours; use the same inoculation method and nutrient matrix to start the microbial fuel cell toxicity sensor directly, see the voltage change Figure 8 , It takes at least 10 days for the voltage to reach a steady state. It can be known that the patented invention can greatly shorten the start-up time of the microbial fuel cell toxicity sensor.

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Abstract

This patent discloses a matching quick-start device for a microbial fuel cell toxicity sensor, which can realize quick start-up of the microbial fuel cell toxicity sensor. The main device adopts an H-type microbial fuel cell. By accelerating the cultivation of the starting device, the anode electrode material to be cultivated is fixed on the electrode fixing plate 14 and evenly distributed on the fixing rod 6 of the anode chamber 5. It can quickly It is transferred and installed in the supporting microbial fuel cell toxicity sensor. A nitrogen aeration device 7 is provided at the bottom of the anode chamber 5, and the nitrogen aeration device is regularly aerated to ensure that the anode chamber 5 is in an anaerobic state. The anode chamber 5 and the cathode chamber 3 are separated by a cation exchange membrane 44, and an external resistor 1 forms a closed circuit. The start-up device can shorten the start-up time of the microbial fuel cell toxicity sensor to 4-6h, and greatly improves the use efficiency of the microbial fuel cell toxicity sensor.

Description

technical field [0001] The invention belongs to the technical field of new energy and environmental engineering, and in particular relates to a supporting acceleration starting device for a microbial fuel cell toxicity sensor. The main body of the device is an H-type microbial fuel cell. The fast start-up of the rapid microbial fuel cell toxicity sensor can be realized through the matching acceleration start-up device. Background technique [0002] In the past decade, microbial fuel cell toxicity sensors have been extensively studied due to their simple structure, no additional sensors, sensitive response, and online detection (Ting Zhao et al. 2018). Microbial fuel cells use electrogenic microorganisms as biocatalysts to convert chemical energy in organic matter into electrical energy (Logan, 2009). When toxic substances appear in the liquid, the electrochemical activity of the biofilm will be inhibited, so the output voltage of the MFC The signal is weakened, and the toxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04223H01M8/04225H01M8/04298H01M8/04302H01M8/16
CPCH01M8/16H01M8/04298H01M8/04223H01M8/04231H01M8/04302H01M8/04225Y02E60/50
Inventor 卢洪斌卢少勇王焕华刘晓晖李琳琳秦攀国晓春
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI