Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst

A nanomaterial, ozonated water technology, applied in oxidation water/sewage treatment, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. It is not easy to purify and other problems, and achieves the effect of improved mineralization, simple operation and small particle size.

Inactive Publication Date: 2011-11-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The discharge of organic waste water in industrial production is large, widely distributed, complex in composition, highly toxic, difficult to purify, and difficult to treat

Method used

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  • Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst
  • Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst
  • Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Weigh 4.50g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The resulting light purple solution was transferred to a polytetrafluoroethylene-lined reactor, and kept sealed at 130°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the resulting precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(a), and its XRD pattern is shown in figure 2 (a).

Embodiment 2

[0023] Weigh 5.22g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The resulting light purple solution was transferred to a polytetrafluoroethylene-lined reactor, and kept sealed at 130°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the resulting precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(b), and its XRD pattern is shown in figure 2 (b).

Embodiment 3

[0025] Weigh 4.50g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The obtained light purple solution was transferred to a polytetrafluoroethylene-lined reaction kettle, and kept sealed at 100°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the obtained precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(c), and its XRD pattern is shown in figure 2 (c).

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Abstract

The invention discloses a water ozonization treatment method by taking a cerium oxide nanomaterial as a catalyst. According to the method, different cerium oxide nanomaterials are prepared by adjusting and controlling the synthesis reaction conditions, and are taken as catalysts for adding into a water ozonization treatment system of phenol containing waste water, so that the degradation of phenol organic pollutants is facilitated. On the basis, a novel water ozonization treatment method is provided. The method belongs to the technical fields of water treatment and environmental catalysis. The prepared cerium oxide nanomaterial has the characteristics of small size, high dispersity in a water solution system, easiness for separation and recovery and the like, and has a wide application prospect in the application of water ozonization treatment.

Description

technical field [0001] The invention belongs to the field of water treatment and environmental catalysis, and relates to an ozonated water treatment method using cerium oxide nanometer material as a catalyst. Background technique [0002] With the increase of population density and the continuous development of the industrial and agricultural economy, human beings are increasingly consuming a large amount of water resources. Industrial wastewater and untreated domestic sewage are directly discharged into rivers, lakes and underground, causing large-scale pollution of water bodies and affecting the ecological environment and environment. The safety of human life has posed a great threat. The discharge of organic waste water in industrial production is large, widely distributed, complex in composition, highly toxic, difficult to purify, and difficult to treat. In the current industrial production process, the discharge of organic waste water is increasing. Most of the organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78B01J23/10
Inventor 董玉明贺爱珍蒋平平王光丽许云飞陈文龙于翔鹏
Owner JIANGNAN UNIV
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