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Method for efficiently removing typical triphenylmethane dye from water

A technology for triphenylmethane and water removal, which is applied in the field of triphenylmethane dye treatment in water, and can solve environmental problems, such as that a microwave reaction device cannot work for a long time and accurately measure the temperature of the reaction system and the emission spectrum of an electrodeless lamp.

Inactive Publication Date: 2010-11-17
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problems that the existing methods for processing typical triphenylmethane dyes cannot solve environmental problems and microwave reaction devices cannot work for a long time, accurately measure the temperature of the reaction system and the emission spectrum of the electrodeless lamp in the microwave photochemical method, the present invention provides a high-efficiency A method for removing typical triphenylmethane dyes in water, using an improved microwave photochemical reaction device, providing microwave radiation to excite the electrodeless lamp to emit ultraviolet-visible light to induce photo-TiO 2 Catalytic, H 2 o 2 Removal of typical triphenylmethane dyes malachite green and crystal violet in water by non-catalytic oxidation

Method used

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  • Method for efficiently removing typical triphenylmethane dye from water
  • Method for efficiently removing typical triphenylmethane dye from water
  • Method for efficiently removing typical triphenylmethane dye from water

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Example 1: Exploring the initial organic concentration for microwave radiation to excite electrodeless lamps to emit ultraviolet-visible light to initiate P25-TiO 2 The influence of photodegradation reaction is as follows: use microwave radiation to excite the electrodeless lamp to emit ultraviolet-visible light to initiate P25-TiO 2 (produced by degussa company) photodegradation method to process malachite green solution (its concentration is 20, 100, 150ppm respectively), the maximum volume is 250mL Pyrex glass reactor is placed inside the microwave oven reactor, microwave input power 800W, use 2 EDL -2 ), water sample volume V=50mL, P25-TiO 2 When the catalyst dosage is C=1g / L and the reaction time t=5min, the decolorization rate of malachite green solution has obvious difference.

[0042] Figure 5 It shows that as the concentration of the reaction solution increases, the microwave-excited electrodeless lamp emits ultraviolet-visible light to initiate the P25-TiO 2...

Embodiment 2

[0043] Example 2: Exploring the solution volume for microwave radiation to excite electrodeless lamps to emit ultraviolet-visible light to initiate P25-TiO 2 The effect of photodegradation is as follows: use microwave radiation to excite the electrodeless lamp to emit ultraviolet-visible light to initiate P25-TiO 2 Photochemical degradation method is used to process malachite green solution (concentration is 150ppm), the maximum volume is 250mL. -2 ), P25-TiO 2 The catalyst dosage is 1g / L, the solution volumes are V=50, 75, 100ml respectively, and the reaction time t=5min, the decolorization rate of malachite green solution has obvious difference.

[0044] Image 6 It shows that as the volume of the reaction solution increases, the decolorization rate of MG decreases significantly after 5 minutes of degradation. The MG solution of 150ppm of 50ml, the decolorization rate of 5min is 81.4% (the same as above); The MG solution of 150ppm of 75ml, the decolorization rate of 5min ...

Embodiment 3

[0045] Example 3: Exploring the number of electrodeless lamps for microwave radiation to excite electrodeless lamps to emit ultraviolet-visible light to induce P25-TiO 2 The influence of photocatalytic reaction is as follows: use microwave radiation to excite electrodeless lamp to emit ultraviolet-visible light to initiate P25-TiO 2 Photochemical degradation method is used to process malachite green solution (concentration is 150ppm), the maximum volume is 250mL. 2 The catalyst dosage is C=1g / L, the solution volume V=50ml, and 1 to 4 electrodeless lamps (denoted as: EDL -1 , EDL -2 , EDL -3 , EDL -4 ), under the situation of reaction time 5min, the decolorization rate of malachite green solution has obvious difference.

[0046] Figure 7 It shows that: increasing the number of electrodeless lamps, the decolorization rate of MG is obviously increased. After 5min decolorization reaction, EDL -4 The decolorization rate basically reaches 98%; EDL -3 The decolorization rate...

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Abstract

The invention discloses a method for efficiently removing typical triphenylmethane dye from water, and belongs to the field of wastewater treatment. Microwave is utilized to excite an electrodeless lamp to generate ultraviolet-visible light to respectively initiate TiO2 photo-catalysis decomposition and H2O2 non-catalytic oxidation decomposition of malachite green and crystal violet typical triphenylmethane dye wastewater. The used microwave radiation is generated by a microwave generation device, wherein the microwave generation device mainly comprises a microwave power source (1), a reaction chamber (13), a glass reactor (15), the electrodeless lamp (16), a condenser pipe (19) and a temperature probe (21). By improving a conventional microwave chemical reaction device, the reaction device can work for a long time, accurately measure the temperature of the reaction system, the emission spectrum of the electrodeless lamp and the like, and treat the malachite green wastewater and the crystal violet wastewater caused by the triphenylmethane dye; and thus the method has the advantages of high efficiency, simple process, strong controllability, mild reaction conditions, simple and convenient operation and the like.

Description

technical field [0001] The present invention relates to a research on the treatment method of triphenylmethane dye in water, specifically a microwave-excited electrodeless lamp emitting ultraviolet-visible light to induce TiO 2 Photocatalytic degradation, H 2 o 2 Photochemical treatment of typical triphenylmethane dyes malachite green and crystal violet in non-catalytic oxidative degradation treatment of water. Background technique [0002] Triphenylmethane dye is an important organic reagent widely used in environmental protection, mining, steel, medicine, food, daily chemical and other fields. Its structural feature is that three benzene rings are connected around the central carbon atom, and one of the benzene rings is connected with Carbon atoms are connected by double bonds. According to the difference of the main chromophore connected to it, it can be divided into acid dyes and basic dyes. Acid dyes contain sulfonic acid groups, and basic dyes mostly exist in the f...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/32
Inventor 鞠勇明许振成刘旺张雨葵陈婵林必桂
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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