Light illumination and mechanically catalytic method for degradation of p-nitrobenzenes by using nano copper-protoxide

A cuprous oxide and nitrobenzene technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Problems such as decomposing organic pollutants are not applied to achieve the effect of easy availability of materials and low cost

Inactive Publication Date: 2005-11-23
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the process is complicated and the working conditions are more restricted.
Subsequently, the research group published related articles introducing mechanocatalysis, but they were all applied to water splitting to achieve energy conversion, and were not applied to the field of decomposing organic pollutants.
[0010] The result of literature search shows: before the present invention is completed, do not find the report that adopts cuprous oxide photo-mechanical catalysis to degrade p-nitrobenzene substances in the water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 200ml of p-nitrophenol solution with a concentration of 0.10g / L was placed in the reactor, and 0.80g of cuprous oxide prepared by the improved hydrolysis method was added, the pH of the solution was 5.5, and the reaction temperature was maintained at winter water temperature (10°C). The light source is a 400W dysprosium lamp with an illuminance of 20000 lx. It is suspended at 35cm above the reactor, and the electromagnetic stirring method is used to make it rub against the bottom surface. The friction area is 1.02×10-3m2, the friction rate is 600 rpm, and 2ml is regularly sampled. High-speed centrifugation, and the supernatant was taken for liquid chromatography determination.

[0031] After determination, the degradation rate of p-nitrophenol can reach 80% after 3 hours of reaction. 92% was reached after 5 hours of reaction.

Embodiment 2

[0033] 200ml of p-nitrophenol solution with a concentration of 0.10g / L was placed in the reactor, and 0.60g of cuprous oxide prepared by the improved hydrolysis method was added, the pH of the solution was 5.5, and the reaction temperature was maintained at winter water temperature (10°C). The light source is a 400W dysprosium lamp with an illuminance of 20000lx. It is suspended at a place 35cm above the reactor, and it is rubbed against the bottom surface by means of electromagnetic stirring. The friction area is 1.02×10 -3 m 2 , the friction rate is 600 rev / min, 2ml high-speed centrifugation is regularly sampled, and the supernatant is taken for liquid chromatographic determination.

[0034] It is determined that the degradation rate of p-nitrophenol can reach 75.6% after 3 hours of reaction. After 5 hours of reaction, it reached 90.6%.

Embodiment 3

[0036] 200ml of p-nitrophenol solution with a concentration of 0.080g / L was placed in the reactor, and 0.40g of cuprous oxide prepared by the improved hydrolysis method was added, the pH of the solution was 6, and the reaction temperature was maintained at winter water temperature (10°C). The light source is a 400W dysprosium lamp with an illuminance of 20000lx. It is suspended at a place 35cm above the reactor, and it is rubbed against the bottom surface by means of electromagnetic stirring. The friction area is 1.02×10 -3 m 2 , the friction rate is 600 rev / min, 2ml high-speed centrifugation is regularly sampled, and the supernatant is taken for liquid chromatographic determination.

[0037] It is determined that the degradation rate of p-nitrophenol can reach 73.4% after 3 hours of reaction. It reached 89.5% after 10 hours of reaction.

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Abstract

The invention discloses a light illumination and mechanically catalytic method for degradation of p-nitrobenzenes by using nano copper-protoxide comprising the steps of, (1) loading waste-water containing nitrophenyl into a reactor, (2) charging nano level cuprous oxide by the proportion of 0.50g / L-4g / L, (3) applying external force to result in the friction between friction devices and the bottom of reactors under the irradiation of light sources.

Description

1. Technical field [0001] The invention relates to a method for degrading p-nitrobenzene substances in water bodies, more specifically a method for degrading p-nitrobenzene substances through light-mechanical catalysis of nano-scale cuprous oxide. 2. Background technology [0002] p-Nitrobenzene is a typical toxic organic pollutant in the surface water environment. Due to its low content in water, it is difficult to degrade, and it is difficult to remove it from water. At present, the main methods for treating p-nitrobenzene substances in water include physical methods, chemical methods and biological methods. [0003] Physical methods are mainly through adsorption and sedimentation to remove. "China Chlor-Alkali" 2003 04 "Resin Adsorption Method to Treat Industrial Wastewater Containing p-Nitrophenol" used CHA-111 adsorption resin to treat and recycle the waste water containing p-nitrophenol, and the adsorption rate reached more than 90%. "Chemical World" 2004 06 "Researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30
CPCY02W10/33Y02W10/37
Inventor 张爱茜孟楠韩朔睽陈允
Owner NANJING UNIV
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