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Composite-carrier catalyst for ozone oxidation as well as preparation method and application of catalyst

A composite carrier and catalyst technology, which is applied in the field of composite carrier ozone catalyst and its preparation, can solve the problems of poor stability, high cost, and low efficiency of wastewater treatment, and achieve the effects of strong stability, reduced preparation cost, and increased specific surface area

Inactive Publication Date: 2019-07-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently prepared catalysts generally have major problems that limit the application of this technology, such as high cost, poor stability, and low efficiency in treating wastewater.

Method used

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  • Composite-carrier catalyst for ozone oxidation as well as preparation method and application of catalyst
  • Composite-carrier catalyst for ozone oxidation as well as preparation method and application of catalyst
  • Composite-carrier catalyst for ozone oxidation as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Preparation of cotton straw-nano-alumina composite carrier ozone catalyst and its ozone oxidation performance

[0037] Prepare the cotton stalk-nano-alumina composite carrier ozone catalyst according to the following steps:

[0038] (1) Straw pretreatment: the agricultural waste cotton straw is crushed, cleaned, and surface impurities are removed, dried in an oven at a temperature of 100°C, ground to 80 mesh, and dried for later use;

[0039] (2) Straw activation: adding the powdered straw obtained in step (1) into a 0.1mol / L ammonia solution, dipping for 3 hours to complete the activation treatment of the straw, and drying the straw powder after the activation treatment in an oven at 100°C for 12 hours;

[0040] (3) Granulation and drying: 0.5g of straw powder prepared in step (2), 9.5g of alumina powder, 3g of sodium carboxymethyl cellulose, and deionized water were evenly mixed and ground to prepare carrier masterbatches. 2-8mm, dry in an oven at 100°C fo...

Embodiment 2

[0047] Example 2: Preparation of cotton straw-nano-alumina composite carrier ozone catalyst and its ozone oxidation performance

[0048] Prepare the cotton stalk-nano-alumina composite carrier ozone catalyst according to the following steps:

[0049] (1) Straw pretreatment: the agricultural waste cotton straw is crushed, cleaned, and surface impurities are removed, dried in an oven at a temperature of 105°C, ground to 80 mesh, and dried for later use;

[0050] (2) Straw activation: adding the powdered straw obtained in step (1) into a 0.2mol / L ammonia solution, dipping for 3 hours to complete the activation treatment of the straw, and drying the activated straw powder in an oven at 105°C for 12 hours;

[0051] (3) Granulation and drying: 0.2g of straw powder prepared in step (2), 9.8g of alumina powder, 2g of sodium carboxymethyl cellulose, and deionized water were evenly mixed and ground to prepare carrier masterbatches, particle size 2-8mm, dry in an oven at 105°C for 12 ho...

Embodiment 3

[0056] Example 3: Preparation of corn stalk-nano-alumina composite carrier ozone catalyst and its ozone oxidation performance

[0057] Prepare the corn stalk-nano-alumina composite carrier ozone catalyst according to the following steps:

[0058] (1) Straw pretreatment: the agricultural waste corn stalks were crushed, washed, and surface impurities were removed, dried in an oven at a temperature of 105°C for 12 hours, ground to 100 mesh, and dried for later use.

[0059] (2) Straw activation: adding the powdered straw obtained in step (1) into 0.3mol / L ammonia water, dipping for 4 hours, and completing the straw activation treatment; drying the activated straw powder in an oven at 105°C for 12 hours;

[0060] (3) Granulation and drying: 0.2g of straw powder prepared in step (2), 9.8g of alumina powder, 3g of methyl cellulose, and deionized water were uniformly mixed and ground to prepare carrier masterbatches with a particle size of 2 -8mm, dry in an oven at 105°C for 12 hour...

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Abstract

The invention discloses a composite-carrier catalyst for ozone oxidation as well as a preparation method and application of the catalyst, and belongs to the technical fields of water treatment and agricultural waste resource utilization. The composite-carrier catalyst for the ozone oxidation comprises a composite carrier, active components and auxiliary agents; the composite carrier is obtained bymixing the catalyst carrier and pretreated and activated agricultural waste straw, performing granulation and performing carbonization; the active components are Fe and Mn; and the auxiliary agents are Ce and Ti. The composite-carrier catalyst for the ozone oxidation provided by the invention has the characteristics of high catalytic efficiency, environmental friendliness of the active componentsand uneasy dissolution, not only solves the problems of high costs of a catalyst for ozone oxidation and low treatment efficiency of wastewater in the prior art, but also realizes resource utilization of the agricultural waste straw.

Description

technical field [0001] The invention belongs to the technical field of water treatment and resource utilization of agricultural waste, and in particular relates to a composite carrier ozone catalyst and its preparation method and application. Background technique [0002] As a large agricultural country in China, the utilization and development of straw resources not only involves the effective utilization of agricultural resources. The main utilization methods of straw include: straw returning to the field, feed, energy, biogas production and industrial raw materials. [0003] Ozone catalytic oxidation technology has been widely used in the field of water treatment, such as in the treatment of drinking water, domestic sewage, and industrial wastewater. As an effective advanced oxidation technology, it is a research hotspot in the field of water treatment in recent years. In the process of catalytic ozone oxidation technology to degrade pollutants, materials with high spec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C02F1/78C02F101/32C02F101/34C02F101/36C02F101/38
CPCB01J23/8892C02F1/725C02F1/78C02F2101/327C02F2101/345C02F2101/36C02F2101/38
Inventor 杨少霞杨典郝梦婕高攀
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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