Method for catalyzing monopersulfate to generate sulfate radicals to decompose organic matter

A technology for refractory organics and persulfate, applied in chemical instruments and methods, molecular sieve catalysts, chemical/physical processes, etc., to achieve uniform dispersion, high feasibility and wide pH range.

Active Publication Date: 2018-09-28
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims at the existing deficiencies in the degradation of organic pollutants in the prior art, and provides a method for catalyzing monopersulfate to produce sulfate radicals to degrade organic matter

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  • Method for catalyzing monopersulfate to generate sulfate radicals to decompose organic matter
  • Method for catalyzing monopersulfate to generate sulfate radicals to decompose organic matter
  • Method for catalyzing monopersulfate to generate sulfate radicals to decompose organic matter

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Embodiment 1

[0041] A method for catalyzing monopersulfate to produce sulfate radicals to degrade organic matter, comprising the following steps:

[0042] A. Preparation of Cu 0.7 co 2.24 o 4 / SBA-15 catalyst

[0043] a. Accurately weigh 0.4938gCo(NO 3 ) 2 ·6H 2 O and 0.1543gCu(NO 3 ) 2 ·3H 2 O in a 100mL beaker, ultrasonically dissolved with 40mL triple distilled water, then added 1.0000g SBA-15 molecular sieve ultrasonically dissolved for 30min;

[0044] b. Place the mixed solution after ultrasonic dissolution in step a in a magnetic stirrer and stir and evaporate until there is no obvious water in the mixed solution, wherein the stirring temperature of the magnetic stirrer is 60°C;

[0045] c. drying the magnetically stirred mixture in step b at 100° C. for 12 hours to obtain a molecular sieve mixture;

[0046] d, the molecular sieve mixture prepared in step c is placed in a tube furnace for roasting, wherein the heating rate of the tube furnace is 2° / min, and the temperature ...

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Abstract

The invention belongs to the technical field of organic wastewater treatment, and relates to a method for catalyzing a monopersulfate to generate sulfate radicals to decompose an organic matter. The method comprises the following steps: performing ultrasonic dissolution on Co(NO3)2.6H2O, Cu(NO3)2.3H2O and an SBA-15 molecular sieve, placing the dissolved material into a tubular furnace, performingroasting, performing drying, performing grinding to obtain a Cu0.7Co2.24O4/SBA-15 catalyst, performing activation on the monopersulfate by utilizing the Cu0.7Co2.24O4/SBA-15 catalyst, and performing degradation on a sulfapyridine solution. According to the method disclosed by the invention, Cu0.7Co2.24O4 in the catalyst is uniformly attached to the pores or surface of the SBA-15, so that stabilityof the catalyst in the reaction system can be effectively enhanced, and sites of the reaction of the monopersulfate and the catalyst are improved; and a high specific surface area of the SBA-15 effectively improves a speed of activation of the sulfate radicals, the reaction is faster, a utilization rate of the reactants is effectively improved, and the degradation efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment, and relates to a method for catalyzing monopersulfate to produce sulfate radicals to degrade organic matter, in particular to a Cu 0.7 co 2.24 o 4 / SBA-15 catalyzes potassium monopersulfate to generate sulfate radicals to degrade sulfapyridine. Background technique [0002] Advanced oxidation technology refers to the method of using strong oxidizing free radicals generated in the reaction as the main oxidant to oxidize and decompose organic pollutants in water. At present, the most commonly used advanced oxidation technology is mainly the Fenton method, and based on the sulfate radical (chemical formula: SO 4 -·) advanced oxidation technology is a new type of advanced oxidation technology that has been explored in recent years. SO 4 -·Has a very strong standard oxidation-reduction potential (2.5-3.1V), and it is theoretically believed that it can oxidize and degrade most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72B01J29/76C02F101/38
CPCB01J29/7607C02F1/72C02F1/725C02F2101/40
Inventor 何家洪滕柳梅李强安继斌吴云
Owner CHONGQING UNIV OF ARTS & SCI
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