Novel CoFe2O4/CNFs cathode catalytic membrane coupling microbial fuel cell two-stage tandem system and application thereof

A cathode catalysis and fuel cell technology, which is applied in the direction of electrochemical and biological combination treatment, biological water/sewage treatment, water/sewage treatment, etc., can solve the problem of microbial fuel cell effluent water quality not up to standard, high concentration coking wastewater difficult to process complex process and other problems, to achieve the effect of good operation stability, excellent anti-pollution performance, and excellent ORR activity

Active Publication Date: 2018-12-04
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] The purpose of this invention is to provide a kind of novel CoFe 2 o 4 / CNFs cathode catalytic membrane coupling microbial fuel cell secondary series system and coking wastewater treatment application, to solve the problems of microbial fuel cell effluent quality not up to standard and high-concentration coking wastewater difficult to process complex process

Method used

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  • Novel CoFe2O4/CNFs cathode catalytic membrane coupling microbial fuel cell two-stage tandem system and application thereof
  • Novel CoFe2O4/CNFs cathode catalytic membrane coupling microbial fuel cell two-stage tandem system and application thereof
  • Novel CoFe2O4/CNFs cathode catalytic membrane coupling microbial fuel cell two-stage tandem system and application thereof

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Embodiment 1

[0024] (1) Cathode CoFe 2 o 4 / CNFs catalytic membrane preparation: Weigh 2g PVDF, 0.8g PVP, 0.5g carbon nanofiber, 0.3g CoFe 2 o 4 / CNFs catalyst and 16.4g DMF were mixed, after stirring for 6h, ultrasonic defoaming for 30min, using carbon nanofiber cloth as the substrate, the coating thickness was 300μm, and CoFe was obtained after phase inversion for 12h 2 o 4 / CNFs catalytic membrane cathode. figure 1 CoFe prepared for 2 o 4 / CNFs membrane SEM image, showing that the pores on the surface of the membrane are evenly distributed and the pore size is uniform; figure 2 It is to test the ORR performance of the catalytic membrane. The test scan range is -0.5V-0.5V in oxygen and nitrogen respectively. Compared with nitrogen, the current response value in oxygen is more significant.

[0025] (2)CoFe 2 o 4 / CNFs cathode catalytic membrane coupling microbial fuel cell secondary series system to treat coking wastewater Operation: take the high-concentration wastewater of the...

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Abstract

The invention belongs to the technical fields of sewage purification and wastewater recycling, and discloses a novel CoFe2O4/CNFs cathode catalytic membrane coupling microbial fuel cell two-stage tandem system and an application thereof. The system is used to treat non-degradable practical coking wastewater. High-efficiency treatment of the coking wastewater is realized through cooperating the oxidation effect of anode chamber microbes on organic matters, the catalysis effect of a CoFe2O4/CNFs catalytic membrane and membrane filtration. The system uses the good stability and excellent pollution resistance of the CoFe2O4/CNFs composite membrane having high ORR activity, and has the advantages of good running stability, improvement of the quality of outlet water, realization of standard-reaching discharging of the coking wastewater, facilitation of development of amplified and pilot scale test experiments, and promotion of the industrialization of the accomplishment when applied to the two-stage tandem continuous treatment of the high-concentration coking wastewater.

Description

technical field [0001] The invention belongs to the technical field of sewage purification and waste water resource utilization, and relates to a high-efficiency CoFe 2 o 4 / CNFs catalytic membrane preparation and cathode catalytic membrane coupling microbial fuel cell secondary series system, especially using this system to treat refractory actual coking wastewater. Background technique [0002] Coking wastewater is refractory, poisonous and harmful industrial wastewater produced in the process of coking, gas purification and refining of chemical products in coking plants. The coking wastewater produced in the production process of the coking industry has become one of the serious water environmental pollution problems in our country. In order to control the deterioration of my country's water sources, the country's requirements for coking wastewater discharge standards are becoming increasingly stringent. "Discharge Standards for Pollutants in the Coking Chemical Industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/00C02F1/461
CPCC02F1/46104C02F3/005C02F3/34
Inventor 柳丽芬张艺臻王守凯安路阳孙嘉琦
Owner DALIAN UNIV OF TECH
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