A kind of pani/bivo 4 Coupling system of composite photocatalyst and microbial fuel cell

A fuel cell and coupling system technology, used in biochemical fuel cells, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high catalyst cost and instability, low pollutant removal rate, etc. Efficiency and stability, improving productivity and the effect of

Active Publication Date: 2017-08-01
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of this invention is to provide a kind of PANI / BiVO 4 The coupling system of composite photocatalyst and microbial fuel cell solves the problems of high catalyst cost, instability and low pollutant removal rate

Method used

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  • A kind of pani/bivo <sub>4</sub> Coupling system of composite photocatalyst and microbial fuel cell
  • A kind of pani/bivo <sub>4</sub> Coupling system of composite photocatalyst and microbial fuel cell
  • A kind of pani/bivo <sub>4</sub> Coupling system of composite photocatalyst and microbial fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0021] BiVO 4 Catalyst production: 1.225g BiNO 3 ·5H 2 O and 0.25 g NH 4 VO 3 (molar ratio 1:1) were dissolved in 4mol L -1 HNO 3 and NaOH solution, and then add 0.1 g of surfactant CTAB to it respectively, stir for 0.5 h each, then mix the above two solutions, adjust the pH value to 5, and stir for 0.5 h to prepare the precursor solution. Pour the precursor solution into the reaction kettle, hydrothermally synthesize at 120°C for two hours, cool down to room temperature, wash the product three times with deionized water and absolute ethanol, and then dry at 100°C. The obtained powder is carefully ground with a mortar and evenly prepared for later use;

[0022] PANI / BiVO 4 Composite photocatalyst production: 1.225g BiNO 3 ·5H 2 O and 0.25 g NH 4 VO 3 (molar ratio 1:1) were dissolved in 4mol L -1 HNO 3and NaOH solution, then respectively add surfactant CTAB therein, stir each for 0.5h, then mix the above two solutions, adjust the pH value to 5, add 0.008g, 0.04g, 0...

Embodiment 2

[0026] MFC coupling device: The reaction adopts a double-chamber microbial fuel cell reactor, and the anode chamber is an anaerobic area, in which Shewanella is inoculated. Rhodamine B solution is placed in the cathode chamber, and an aeration device is provided at the bottom. The anode chamber and the cathode chamber are separated by a proton exchange membrane to exchange protons.

[0027] MFC degradation reaction: place 60g of carbon particles loaded with microorganisms in the anode chamber, and add 150ml of nutrient solution. Add 200ml of 10mg / L rhodamine B solution in the cathode compartment. The carbon rod is the anode, the stainless steel net carrying the catalyst is the cathode, and the 500Ω resistor is connected with a wire to communicate with the circuit. Place a 50W halogen lamp outside the cathode chamber, facing the photocatalyst. At the beginning of the reaction, samples were taken every 15 minutes to measure the absorbance, and the reaction was carried out for...

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Abstract

The invention provides a polyaniline (PANI) / BiVO4 composite photocatalyst and microbial fuel cell coupling system, and belongs to the technical field of sewage treatment and energy recycling. A microbial fuel cell generates electric energy when degrading an organic matter, and is combined with a PANI / BiVO4 composite photocatalytic cathode to form the PANI / BiVO4 composite photocatalyst and microbial fuel cell coupling system. The degradation rate on rhodamine B within two hours reaches 84%; the degradation rate of the coupling system on the rhodamine B within 30 minutes reaches 94% under the acid condition that the pH is 3; the catalytic degradation rate of the coupling system on rhodamine B in a dark condition is 62%; the PANI / BiVO4 composite photocatalyst and microbial fuel cell coupling system is suitable for treatment of organic wastewater and inorganic ammonia-nitrogen wastewater; the ammonia-nitrogen removal rate reaches 74%; and the catalytic performance of the PANI / BiVO4 composite catalyst is stable.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and energy recovery and utilization. In a microbial fuel cell system, organic matter in sewage is used as fuel to generate electric energy while degrading organic matter; combined with photocatalyst, light energy is used to further increase pollutant removal efficiency. Increase energy output. Background technique [0002] Microbial Fuel Cell (MFC) is the product of the combination of microbial technology and battery technology. It uses the metabolites of microorganisms as the active substance of the electrode, which causes the potential shift of the electrode, increases the potential difference, and thus obtains electrical energy. chemical energy directly into electrical energy. It has the advantages of high efficiency, environmental protection and cleanliness. However, because the research of MFC is still in its infancy, the cost of electrode materials and catalysts is high, and the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16C02F3/28C02F3/34
CPCC02F3/28C02F3/34H01M8/16Y02E60/50Y02W10/37
Inventor 柳丽芬李芸
Owner DALIAN UNIV OF TECH
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