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Low mass transfer resistance infiltration flow type electrochemical method and reaction apparatus thereof

A technology of mass transfer resistance and electrochemistry, applied in the field of electrochemistry, can solve problems such as slow mass transfer, and achieve the effects of simple operation, improved reaction surface area and activity, and improved electrochemical efficiency.

Inactive Publication Date: 2010-11-03
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of slow mass transfer in existing electrochemical methods, and propose a low mass transfer resistance percolation electrochemical method and its reaction device, by reducing the interaction of organic waste water when it passes through the electrodes Mass transfer resistance, improve mass transfer coefficient, and then improve current efficiency and reduce energy consumption

Method used

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  • Low mass transfer resistance infiltration flow type electrochemical method and reaction apparatus thereof
  • Low mass transfer resistance infiltration flow type electrochemical method and reaction apparatus thereof
  • Low mass transfer resistance infiltration flow type electrochemical method and reaction apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 handles reactive brilliant red X-3B simulation dye wastewater

[0021] Such as figure 1 As shown, the reaction device adopted in this embodiment includes a reaction vessel 6, the reaction vessel 6 is divided into upper and lower parts, the middle is separated by an anode 1, a cathode 2 and an insulating layer 3, and the solution is continuously flowed in the upper and lower parts of the reaction vessel 6 by a peristaltic pump 4. During the solution cycle, the anode 1 and the cathode 2 are continuously permeated, and the mass transfer resistance is reduced through the interaction with the electrodes during the process. The DC stabilized power supply 5 applies the voltage to the anode 1 and the cathode 2, and can be adjusted according to the reaction conditions.

[0022] During implementation, the anode 1, the cathode 2 and the insulating layer 3 are respectively fixed on the reaction vessel 6, the anode 1 and the cathode 2 are connected to the DC stabilized...

Embodiment 2

[0037] Embodiment 2 The influence of different voltages on the decolorization rate of reactive brilliant red X-3B

[0038] The reaction device and implementation process used in this embodiment are the same as in Example 1.

[0039] The specific implementation conditions and results of this embodiment are as follows:

[0040] Reaction target solution volume: 300mL

[0041] Reaction target solution concentration: Reactive Brilliant Red X-3B 50mg / L

[0042] Ambient temperature: 25°C

[0043] Initial pH: 7

[0044] Electrolyte concentration: 2g / L

[0045] Electrode area: 28cm 2

[0046] Anode: activated carbon fiber carbon nanotube electrode

[0047] Cathode: activated carbon fiber carbon nanotube electrode

[0048] Volume flow: 80.2mL / min.

[0049] The decolorization rates of different voltage treatments are shown in Table 2.

[0050] Table 2 Example 2 The dye decolorization rate (%) of different voltage treatment

[0051]

Embodiment 3

[0052] Example 3 Treatment of Reactive Brilliant Blue X-BR Simulation Dye Wastewater

[0053] The reaction device and implementation process used in this embodiment are the same as in Example 1.

[0054] The specific implementation conditions and results of this embodiment are as follows:

[0055] Reaction target solution volume: 300mL

[0056] Reaction target solution concentration: Reactive Brilliant Blue X-BR 100mg / L

[0057] Ambient temperature: 25°C

[0058] Initial pH: 2

[0059] Electrolyte concentration: 1g / L

[0060] Electrode area: 28cm 2

[0061] Voltage: 8V

[0062] Anode: activated carbon fiber carbon nanotube electrode

[0063] Cathode: copper mesh

[0064] Volume flow: 122.5mL / min.

[0065] The decolorization rate and COD removal rate of dyes after treatment are shown in Table 3.

[0066] The decolorization rate and COD removal rate of dyestuff after table 3 embodiment 3 processes

[0067] time (min)

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Abstract

The invention relates to a low mass transfer resistance seepage type electrochemical method and a reaction device belonging to the electrochemical technology field. The method comprises: respectively connecting the anode and cathode of a reaction vessel with the positive and negative poles of a direct power supply, pumping the waste water into the reaction vessel by a peristaltic pump, keeping the two electrodes apart by an insulation, discharging the waste water which passes through the anode and cathode of the reaction vessel from the reaction vessel, or circularly processing the waste water in the reaction vessel through the peristaltic pump. The device comprises the reaction vessel with the anode and cathode in it or surrounding it, the insulation is arranged between the anode and thecathode, the positive and negative poles of the direct power supply are respectively connected with the anode and cathode, and the peristaltic pump is connected with the reaction vessel. The method of the invention reduces the mass transfer resistance on the electrode surface by the interaction between the waste water across the electrode and the electrode, improves the mass transfer coefficient,then improves the current efficiency and reduces the energy consumption.

Description

technical field [0001] The invention relates to a method and a device in the field of electrochemical technology, in particular to a percolation type electrochemical method with low mass transfer resistance and a reaction device thereof. Background technique [0002] In recent years, electrochemical methods have developed rapidly as an environmentally friendly pollutant treatment method. Electrochemical technology is a treatment method based on efficient and clean electrons, without adding other reagents, and basically does not generate pollution during the treatment process. Due to the good environmental compatibility of electrochemical methods, it plays an important role in the field of pollutant control. In addition, the current and voltage in the electrochemical process are easy to measure and easy to realize automatic control. Although the electrochemical method has a good treatment effect, it has not been applied on a large scale in practice. The main application bot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
Inventor 杨骥王军魏静
Owner SHANGHAI JIAOTONG UNIV
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