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Method for degrading dyestuff wastewater and synchronously generating power by improving capacity of activating PDS by MFC

A dye wastewater and electronic technology, applied in biochemical fuel cells, chemical instruments and methods, water pollutants, etc., can solve the problem of low power generation performance of MFC, low number of sulfate radicals, and inability to achieve high-efficiency degradation of organic pollutants, etc. problem, to achieve the effect of low long-term operation cost, improved synchronous power generation performance, and improved processing effect

Inactive Publication Date: 2019-02-26
CHANGZHOU UNIV
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Problems solved by technology

However, the power generation performance of MFC is generally low, and the number of sulfate radicals generated by the cathode PDS electrons is small, which cannot achieve high-efficiency degradation of organic pollutants.

Method used

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  • Method for degrading dyestuff wastewater and synchronously generating power by improving capacity of activating PDS by MFC
  • Method for degrading dyestuff wastewater and synchronously generating power by improving capacity of activating PDS by MFC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] To clarify MnO 2 To improve the effect of MFC activating PDS to degrade dye wastewater and synchronously generate electricity, the methyl orange solution was used as a simulated pollutant to measure the effect of adding MnO 2 and without adding MnO 2 The removal rate of methyl orange in the system and the synchronous power density curve of MFC.

[0019] The catholyte of MFC was replaced with 0.1mmol / L methyl orange solution, and 2mmol / L potassium persulfate was added. Take 1mL of water samples at 5, 10, 20, 30, 60, 120, 180, and 240 minutes respectively, dilute 3 times with lye, and then filter through a 0.45 μm filter membrane, and use a UV-visible spectrophotometer at a maximum absorption wavelength of 468nm Measure the absorbance of the solution, calculate the dye concentration and the corresponding removal rate, and record the synchronous electricity generation of MFC through the data collector.

[0020] Based on the obtained data, plotting as figure 1 as shown ...

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Abstract

The invention discloses a method for degrading azo dyestuff wastewater by activating persulfate oxidation through bioelectricity, and belongs to the technical field of the sewage treatment. Microorganisms in a microorganism fuel cell anode chamber produces electrons after degrading the substrate, the electrons are transferred to a cathode electrode through an external circuit after being transferred to an anode electrode; the persulfate is used as electron receptor at the cathode, and continuously receives the electrons on the cathode electrode; the electrons are continuously generated, transferred and received, thereby forming bioelectricity. After the persulfate continuously obtains the electrons at the cathode, the sulfate radical free group as shown in description with strong oxidationis generated, the sulfate radical free group has extremely high redox level, and can effectively oxidize and degrade the azo dyestuff wastewater in the cathode chamber; the additional electric energyoutput is unnecessary, the reaction system is simple, the energy consumption is low, and the secondary pollution is avoided.

Description

technical field [0001] The invention relates to a method for improving MFC activation of PDS to degrade azo dyes and synchronous electricity production, and belongs to the technical field of sewage treatment in environmental protection. Background technique [0002] With the rapid development of industry and agriculture, the national economy continues to grow, but at the same time, the problem of water environmental pollution cannot be ignored. Among the numerous industrial and agricultural wastewaters, dye wastewater is one of the main sources of pollution. Dye wastewater has great ecological and social hazards. On the one hand, the dye wastewater has a high chroma. When the dye wastewater is discharged directly into the water body without treatment, it will reduce the light transmittance of the water body, inhibit the photosynthesis of aquatic plants, reduce the dissolved oxygen in the water body, and cause the death of aquatic animals and plants due to hypoxia. Reduce t...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/34H01M8/16C02F101/38
CPCC02F3/005C02F3/34C02F2101/308C02F2101/38H01M8/16Y02E60/50
Inventor 姚海祥冯俊生蔡晨
Owner CHANGZHOU UNIV
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