MFC (microbial fuel cell) decolorization method based on PEDOT membrane electrode

A dioxythiophene membrane and fuel cell technology, applied in biochemical fuel cells, battery electrodes, chemical instruments and methods, etc., to achieve the effects of improving electricity production and decolorization capabilities, improving adsorption capabilities and extracellular electron transfer capabilities, and low cost

Inactive Publication Date: 2018-07-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Polyethylenedioxythiophene (PEDOT) is a conductive polymer material with excellent performance. In recent years, several literatures have reported that PEDOT can be used as a binder to fix graphene and other nanomaterials on the electrode surface for MFC electricity generation. See MFC based on PEDOT film anode for dye decolorization, the mechanism of PEDOT to promote electricity generation and electricity generation is also in its infancy

Method used

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  • MFC (microbial fuel cell) decolorization method based on PEDOT membrane electrode
  • MFC (microbial fuel cell) decolorization method based on PEDOT membrane electrode
  • MFC (microbial fuel cell) decolorization method based on PEDOT membrane electrode

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Embodiment 1

[0031] Example 1: A PEDOT film was polymerized on the surface of a graphite plate as an MFC anode for the decolorization of the highly polar azo dye Ponceau (XP2R, 3761-53-3).

[0032] In this embodiment, two types of MFC fuel cells are used: one is that the anode of the MFC is a graphite plate, and the other is that the anode of the MFC electropolymerizes a layer of PEDOT (that is, a PEDOT membrane electrode) on a graphite plate substrate. The only difference between the two MFCs is that one is a pure graphite electrode, the other is a PEDOT membrane electrode, and the other conditions of the MFC are the same. The MFC with pure graphite block as the anode represents the MFC reported in the existing literature; the MFC with the PEDOT membrane electrode as the anode represents the MFC decolorization method of the present invention.

[0033] The decolorization ability and power generation ability of MFC are not only related to the electrode material, but also related to the size...

Embodiment 2

[0044] Example 2: MFC of PEDOT modified carbon felt is used for decolorization of azo dyes, triphenylmethane dyes and anthraquinone dyes.

[0045] The anode and cathode conditions for the control MFC were: carbon felt with dimensions 20mm x 10mm x 5mm. The MFC anode and cathode conditions of the present invention are as follows: carbon felt with a size of 20mm×10mm×5mm is used as the electrode base material, and PEDOT is modified on the carbon felt by electrochemical method. The decolorizing electrogenic bacteria adopts the marine electrogenic bacteria Morganella sp. DS4020 mentioned in the first application for Chinese patent (CN105238716A). The other structures and operating conditions of the two MFCs are exactly the same. Select 5 dyes, namely monoazo dye ponceau 2R, disazo dye acid scarlet GR (AR73,5413-75-2), Congo red (CR,573-58-0), triphenylmethane peacock Green (MG, 569-64-2) and anthraquinone dye reactive brilliant blue KN-R (RB19, 2580-78-1) were used as test dyes. ...

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Abstract

The invention provides an MFC (microbial fuel cell) decolorization method based on a PEDOT membrane electrode and relates to MFCs. The PEDOT membrane electrode is obtained by modifying surface of an electrode base material with a PEDOT membrane; an MFC reactor is assembled preliminarily, the parts for preliminary assembly comprise a cathode chamber, an anode chamber, a separator, a sealing washer,a fixing clamp and an external resistor, and the separator is located between the anode chamber and the cathode chamber and fixed by the fixing clamp; an anolyte and a catholyte are added to the anode chamber and the cathode chamber of the MFC respectively; the electrode taken as an anode and a cathode is placed into the anode chamber and the cathode chamber of the MFC reactor, and the anode andthe cathode are connected with the external resistor; a decolorization medium in the anode chamber is inoculated with a decolorized electricigens; after inoculation, an anaerobic gas is introduced, air in the MFC reactor is discharged, and the MFC enters an operation state; electrogenesis curve, changing with time, of the MFC is recorded by measuring voltages at two ends of the external resistor;the anolyte is sampled regularly, and dye decolorization speed is calculated by measuring dye concentration of the anolyte.

Description

technical field [0001] The invention relates to microbial fuel cells, in particular to a decolorization method for microbial fuel cells based on polyethylene dioxythiophene membrane electrodes. Background technique [0002] The printing and dyeing industry consumes a lot of water and has a high COD load, which is the main source of industrial water pollution in my country. According to the first national survey of pollution sources, the textile industry's wastewater discharge and COD discharge rank third and second respectively in my country's industrial water pollution. According to relevant national regulations, printing and dyeing wastewater must not only be treated to reduce pollution indicators such as COD, BOD, and chroma, but also must have a certain proportion of wastewater reuse after treatment. According to the newly revised "Printing and Dyeing Industry Access Conditions", the wastewater reuse rate of the newly added printing and dyeing industry must reach more t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34H01M4/86H01M8/16C02F101/30C02F101/34C02F101/38
CPCC02F3/34C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2201/002H01M4/8657H01M8/16Y02E60/50
Inventor 徐方成郑智王珊宋宇宁刘红豆
Owner XIAMEN UNIV
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