Multi-electrode microbial fuel cell system for researching microbial electrochemistry

A technology for microbial electrochemistry and fuel cell systems, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve problems such as changes in microbial performance and inability to truly reflect electrochemical characteristics, and achieve the effect of avoiding analysis errors

Active Publication Date: 2013-09-25
CHINA AGRI UNIV
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, the study of the electrochemical characteristics of microorganisms in MFC requires the use of electrochemical workstations and other equipment, and there are two problems in the transfer of MFC microorganisms from the anode electrode to the electrochemical workstation system: first, the performance of microorganisms may change during the transfer process ;Secondly, the transfer of the electrogenic microorganisms adsorbed on the surface of the anode electrode to the electrolyte of the electrochemical workstation may not truly reflect its electrochemical characteristics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-electrode microbial fuel cell system for researching microbial electrochemistry
  • Multi-electrode microbial fuel cell system for researching microbial electrochemistry
  • Multi-electrode microbial fuel cell system for researching microbial electrochemistry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] For the research system of microbial electrochemical characteristics, please refer to figure 1 . When the MFC runs for 12 days, in order to test the electrical performance of the anode electrode, the S1, S1 and S2, S1, S2 and S3, S1, S2, S3 and S4, S1, S2, S3, S4 and S5 in the MFC anode chamber are operated The electrodes are disconnected respectively, the MFC voltage gradually decreases, and finally becomes zero, such as figure 2 shown. It was found that the output voltage of MFC has the same variation trend after repeated three times in succession. Compared with the working electrode, the MFC voltage did not change significantly after the two control electrodes C1 and C2 were connected to the circuit, indicating that for the MFC, the anode can only enrich the electrochemically active microorganisms under the closed circuit condition. When the MFC was running for 25 days and 35 days, two more electrode experiments were carried out. image 3 The individual voltage ...

Embodiment 2

[0029] Using the device in Example 1, when the MFC was running for 5 days, the MFC anode electrodes were respectively connected to the electrochemical workstation for cyclic voltammetry scanning (CV), wherein the working electrodes S1 and S5 in the MFC, the internal control electrodes in the MFC, and the external control in the MFC The cycle desk scan pattern of electrode (B1) is as follows: Figure 4 As shown, near 250mV, S5 has an obvious oxidation peak, but S1 does not. When the MFC was running for 12 days, the cyclic voltammetry scan was carried out again to some electrodes, wherein the cyclic voltammetry scan patterns of the working electrodes S2, S4, S5 in the MFC, and the contrast electrodes C1 and C2 in the MFC were as follows: Figure 5 shown. First, the oxidation peak of S5 around 250mV disappears, but there is an obvious reduction peak near -300mV. The working electrodes all have obvious reduction peaks, but the control electrodes do not, which means that the surf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of microbial electrochemistry, and specifically relates to a multi-electrode microbial fuel cell system for researching the microbial electrochemistry. The multi-electrode microbial fuel cell system comprises a matrix storage tank, a peristaltic pump, a cylinder microbial fuel cell, anode electrodes, a cathode electrode, a data collecting card, a load resistor, a data recording and analyzing device, a three-electrode system and an electrochemical workstation. The cylinder microbial fuel cell comprises a cylinder shell, an anode chamber inside the shell, a cathode chamber and a proton exchange membrane. When an electrochemistry test is carried out, the three-electrode system is formed by employing the anode electrodes as working electrodes, and analysis is carried out by the electrochemical workstation. The invention provides a device for directly researching electricigens and a method for researching the electricigens. Microbes are prevented from being damaged by utilizing the method and the device. The method and the device are simple and convenient, so that analysis errors due to microbe transfer by prior methods are prevented, and electrochemistry characteristics of the electricigens can be really reflected. The multi-electrode microbial fuel cell system provided by the invention has a certain application value.

Description

technical field [0001] The invention belongs to the field of microbial electrochemistry, in particular to a multi-electrode microbial fuel cell system for studying microbial electrochemistry. Background technique [0002] Electrochemistry has important application value in water treatment, metal corrosion, bioenergy and other fields, and microbial electrochemistry is an important research direction. Microbial fuel cell (MFC) is an application case of microbial electrochemistry. Its important feature is that the electrogenic microorganisms in MFC can directly generate electricity while degrading organic wastewater. Based on the above basic principles, the intuitive electrical signal of MFC is a convenient means to study microbial electrochemistry. There is no similar research device report at present. [0003] Usually, the study of the electrochemical characteristics of microorganisms in MFC requires the use of electrochemical workstations and other equipment, and there are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M4/86
CPCY02E60/50
Inventor 刘志丹李保明刘京张源辉
Owner CHINA AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap