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Supported catalyst capable of deeply degrading industrial dye waste water and preparation method thereof

A supported catalyst and dye wastewater technology, which is applied in textile industry wastewater treatment, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low repetition rate and reusability of reaction catalysts, low efficiency of pure ozone oxidation reaction, ozone Response to harsh pH conditions and other issues, to achieve good reusability, stable structure, and improved efficiency

Inactive Publication Date: 2018-04-27
BEIHANG UNIV +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the efficiency of pure ozone oxidation reaction in the industrial treatment of dye wastewater is not high; the utilization rate of ozone is low; the pH condition of the ozone reaction is harsh; the mineralization degree of dye wastewater is low; the repetition rate and reusability of the reaction catalyst Not high-level related problems, providing a loaded catalyst for deep degradation of industrial dye wastewater and its preparation method

Method used

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  • Supported catalyst capable of deeply degrading industrial dye waste water and preparation method thereof
  • Supported catalyst capable of deeply degrading industrial dye waste water and preparation method thereof
  • Supported catalyst capable of deeply degrading industrial dye waste water and preparation method thereof

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preparation example Construction

[0040] The invention provides a supported catalyst for deeply degrading industrial dye wastewater and a preparation method thereof. The catalyst includes Fe and Mn double transition metal supported MCM-41 mesoporous molecular sieve catalyst, Fe supported MCM-41 mesoporous molecular sieve catalyst and Mn Loaded MCM-41 mesoporous molecular sieve catalyst, the specific preparation method steps are as follows:

[0041] The first step, impregnation pretreatment of carrier powder and loaded active components;

[0042] The molecular sieve powder was placed in an ethanol solvent for ultrasonic vibration to obtain solution A; the volume-to-mass ratio of ethanol and molecular sieve was 20mL: 1g.

[0043] The Fe source and Mn source precursor Fe(NO 3 ) 3 9H 2 O and Mn(CH 3 CO 2 ) 2 ·H 2 O was dissolved in high-purity water simultaneously or separately in proportion, and ultrasonically oscillated to obtain solution B. Among them, m(Fe):m(MCM-41)=10:100, m(Mn):m(MCM-41)=5:100. M(F...

Embodiment 1

[0052] Example 1: Preparation of Fe-Mn / MCM-41 catalyst:

[0053] The first step is the impregnation pretreatment process of carrier powder and loaded active components;

[0054] Weigh 1.0 g of molecular sieves into a 50 mL beaker A, add 20 mL of pure ethanol into beaker A, stir with a glass rod to distribute the molecular sieves evenly and perform ultrasonic vibration for 5 minutes to obtain solution A. Simultaneously weigh Fe(NO 3 ) 3 9H 2 O powder medicine 482.68mg and Mn(CH 3 COO) 2 ·H 2 Place 222.81 mg of powder medicine in a 50ml beaker B, add 20mL of high-purity water to beaker B, stir the powder medicine with a glass rod to make it fully dissolve and ultrasonically vibrate for 5 minutes to obtain solution B. Mix solution A and solution B in 100ml beaker C and carry out magnetic stirring for 24 hours, so that Fe and Mn ions are fully adsorbed on the surface of MCM-41 mesoporous molecular sieve, and mixed solution C is obtained. Select 1.5mL concentrated ammonia ...

Embodiment 2

[0058] Example 2: Preparation of Fe / MCM-41 catalyst:

[0059] The first step is the impregnation pretreatment process of carrier powder and loaded active components;

[0060] Weigh 1.0g of MCM-41 mesoporous molecular sieves into a 50mL beaker, add 20mL of pure ethanol to the beaker, stir with a glass rod to make the molecular sieves evenly distributed and perform ultrasonic vibration for 5min to obtain solution A. Weigh Fe(NO 3 ) 3 9H 2 Place 482.68mg of powder medicine in a 50mL beaker, add 20mL of high-purity water into the beaker, stir the powder medicine with a glass rod to fully dissolve and ultrasonically vibrate for 5min to obtain solution B. Mix solution A and solution B in a 100ml beaker and perform magnetic stirring for 24 hours, so that Fe ions are fully adsorbed on the surface of MCM-41 mesoporous molecular sieves, and mixed solution C is obtained. Prepare an ammonia solution D with a volume ratio of 1.5mL concentrated ammonia water: 8.5mL high-purity water. ...

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Abstract

The invention discloses a supported catalyst capable of deeply degrading industrial dye waste water and a preparation method thereof, which belong to the technical field of a catalyst. The supported catalyst comprises the Fe and / or Mn-supported MCM-41 mesoporous molecular sieve catalyst, the preparation method comprises the following steps: carrier powder and a supported active component are subjected to dipping pretreatment; and then a one-step solvothermal method is used for preparing the metal supported catalyst. The preparation method has the advantages of simple process, high efficiency,high repeatability, and easy large-scale synthesis; synergism between duplex metals of Fe and Mn is used, the oxidation rate of methyl orange by ozone is greatly increased, the dye waste water methylorange can be efficiently and deeply degraded, and the method has good reusability.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a loaded catalyst for deeply degrading industrial dye wastewater and a preparation method thereof, which belongs to advanced oxidation technology in industrial wastewater degradation technology. Background technique [0002] The output of my country's dye industry remains between 670,000 and 760,000 tons, accounting for about 70% of the world's total; the export volume of dyes remains at about 230,000 to 280,000 tons. The dye industry continues to maintain a steady growth trend. The dye industry is an important part of my country's textile, light industry, chemical and other fields, and it is also a major industrial wastewater discharge. Dye wastewater has the following three main characteristics: (1) large amount of dye discharge and complex composition; (2) high toxicity, large pH changes, and high chroma; (3) poor biochemical properties. Therefore, for the treatment of dye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/04C02F1/72C02F1/78C02F101/30C02F103/30
CPCB01J29/045C02F1/725C02F1/78C02F2101/308C02F2103/30
Inventor 刁鹏赵佳胡清唐一胡滨张倩
Owner BEIHANG UNIV
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