Single-chamber MFC reactor with ultra-miniature air cathode and manufacturing method

An air cathode and manufacturing method technology, applied in the fields of electrical components, climate sustainability, final product manufacturing, etc., can solve the problems of high cost of cathode reagents, long response time, high detection limit, etc., and achieve new configurations and structures The possibility of solving the effect of long response time

Pending Publication Date: 2022-05-27
NANKAI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing conventional dual-chamber MFC in toxicity detection, solve the problems of longer response time, higher detection limit, and higher cost caused by the need for cathode reagents. The invention provides ultra-miniature air Single-chamber MFC reactor with cathode and method for making the same

Method used

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  • Single-chamber MFC reactor with ultra-miniature air cathode and manufacturing method
  • Single-chamber MFC reactor with ultra-miniature air cathode and manufacturing method
  • Single-chamber MFC reactor with ultra-miniature air cathode and manufacturing method

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Embodiment 1

[0021] according to figure 1 Schematic diagram of the preparation of an ultra-miniature MFC reactor such as figure 2 and image 3 As shown, a single-chamber MFC structure of an ultra-miniature air cathode includes a carbon cloth anode 6, an air cathode 2, the cathode and anode electrons are connected to an external circuit through a carbon fiber wire 8, an anolyte injection pipe 4, a water outlet pipe 7, polydimethylformaldehyde Siloxane (PDMS) substrate 5 , copper tape 9 , and polyethylene terephthalic acid (PET) film 1 cut by xurographic technology constitute the chamber 3 of the reactor as the core components of the reactor. The air cathode 2 is composed of a polytetrafluoroethylene (PTFE) diffusion layer, a carbon base layer and a catalytic layer. In the actual working process of the reactor, the mixture of the water sample to be monitored and the nutrient solution is added into the microbial fuel cell chamber through the injection pipe 4, and reacts with the microorgan...

Embodiment 2

[0025] Optimize the structure of the ultra-micro single-chamber MFC, analyze the performance of the ultra-micro MFC under different chamber volumes, and set the chamber volumes to 125ul, 188ul and 250ul, corresponding to Figure 4 a,b,c in. It can be seen that different chamber volumes have a great influence on the performance of the ultra-micro MFC reactor in the present invention, and the optimal value of the chamber volume is 188ul.

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Abstract

The single-chamber MFC reactor is characterized by comprising a carbon cloth anode, an air cathode, a polyethylene terephthalate (PET) film, a carbon fiber wire, an injection needle tube, a water outlet pipe, a polydimethylsiloxane (PDMS) base, a copper adhesive tape, a double-sided adhesive tape, a plain end clamp, an external resistor and a wire, wherein the PET film forms a cavity of the miniature MFC, cathode and anode electrons are connected with an external circuit through carbon fibers to form a loop, and the air cathode is composed of carbon cloth, an air diffusion layer coated on two sides and a catalyst layer. According to the manufacturing method of the single-chamber MFC reactor of the ultra-miniature air cathode, the optimal external resistance is 10 ohms, and the maximum electricity generation amount is 915 nA. The single-chamber MFC reactor with the ultra-miniature air cathode and the manufacturing method of the single-chamber MFC reactor have the advantages that the defects of an existing double-chamber MFC of a conventional model in toxicity detection are overcome, and the problems that the response time is long, the detection limit is high, and the cost is high due to the fact that a cathode reagent is needed are solved.

Description

technical field [0001] The invention relates to the field of water quality monitoring, in particular to a single-chamber MFC reactor of an ultraminiature air cathode and a manufacturing method. Background technique [0002] Microbial fuel cell technology (MFC) is a device that utilizes the catalytic activity of microorganisms or enzymes to oxidize and decompose organic matter and generate electricity through its own metabolism. It belongs to the biochemical conversion technology of the Biomass Energy Utilization Technology Center. In the existing research, MFC is mainly used in the field of water treatment to remove high concentrations of pollutants, and in the field of environmental monitoring, for the treatment of organic compounds such as biochemical oxygen demand (BOD), chemical oxygen demand (COD) and volatile Fatty acids (VFA), toxic substances such as heavy metals, pesticides and other water quality indicators for monitoring and early warning. The basic design of a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M8/0234H01M8/0297
CPCH01M8/16H01M8/0234H01M8/0297Y02P70/50
Inventor 黄津辉杨莎莎肖楠
Owner NANKAI UNIV
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