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A method for treating dye wastewater based on three-dimensional magnetically ordered mesoporous cobalt ferrite activated persulfate

A technology for activating persulfate and dye wastewater, applied in chemical instruments and methods, oxidized water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., can solve the problem of low catalytic performance of spinel-type cobalt ferrite and catalyst recovery Difficulties, environmental secondary pollution and other problems, to achieve the effect of simple operation, energy saving and pollution reduction

Active Publication Date: 2018-01-02
湖州智清环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of difficult recovery of the catalyst in the homogeneous persulfate catalytic system, easy to cause secondary pollution of the environment and low catalytic performance of spinel-type cobalt ferrite, and proposes a three-dimensional magnetically ordered mesoporous Cobalt ferrite activates persulfate to degrade dye wastewater

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  • A method for treating dye wastewater based on three-dimensional magnetically ordered mesoporous cobalt ferrite activated persulfate
  • A method for treating dye wastewater based on three-dimensional magnetically ordered mesoporous cobalt ferrite activated persulfate

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specific Embodiment approach 1

[0038] In this embodiment, a method for treating dye wastewater based on three-dimensional magnetically ordered mesoporous cobalt ferrite activated persulfate is carried out in the following steps:

[0039] 1. Preparation of three-dimensional magnetically ordered mesoporous cobalt ferrite (Three-dimensional ordered mesoporous CoFe 2 o 4 , TOM-CoFe 2 o 4 );

[0040] The KIT-6 template, Co(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O was thoroughly ground in a mortar containing n-hexane in turn, and the fully ground material was transferred to a round-bottomed flask filled with n-hexane, and refluxed and stirred for 12 h in a water bath at 70 °C;

[0041] step one KIT-6 template, Co(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 The molar ratio of O is 8:1:2;

[0042] step one KIT-6 template, Co(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O is placed in a mortar containing n-hexane in turn and fully ground, and the volume requirement of n-hexane is that the above materials can b...

specific Embodiment approach 2

[0059] The difference between this embodiment and the first embodiment is that the concentration of the target pollutant Rhodamine B in the second step is 50 mg / L-100 mg / L, and other steps and parameters are the same as the first embodiment.

specific Embodiment approach 3

[0060] The difference between this embodiment and specific embodiments 1 to 2 is that the concentration of the target pollutant Rhodamine B in step 2 is 100 mg / L-200 mg / L, and other steps and parameters are the same as those of specific embodiments 1 to 2.

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Abstract

The invention discloses a method for treating dye wastewater based on three-dimensional magnetically ordered mesoporous cobalt ferrate-activated persulfate, aiming to solve the problem of low catalytic efficiency of existing spinel-type cobalt ferrite for persulfate. The invention is realized through the following steps: 1. Preparing three-dimensional magnetic ordered mesoporous cobalt ferrite; 2. Preparing dye wastewater with a specified concentration, and filling the prepared solution into a brown shake flask; 3. Adding persulfate; 4. Add three-dimensional magnetic ordered mesoporous cobalt ferrite; 5. Use an external magnetic field to separate the three-dimensional magnetic ordered mesoporous cobalt ferrite to complete a three-dimensional magnetic ordered mesoporous cobalt ferrite activated persulfate treatment wastewater The dye method. The use of the three-dimensional magnetic ordered mesoporous cobalt ferrite synergistic persulfate technology of the present invention can achieve efficient treatment of dye wastewater, with a removal rate exceeding 90%; the dissolution rate of cobalt ions during use is extremely low, reducing environmental pollution; the catalyst can be added by external Magnetic separation is rapid and reusable, reducing operating costs.

Description

technical field [0001] The invention relates to the field of water treatment, and discloses a method for treating dye wastewater based on three-dimensional magnetic ordered mesoporous cobalt ferrite activated persulfate. Background technique [0002] Dye wastewater discharged from different industries (textile, paper, leather, food, dye manufacturing, etc.) is considered to be an important source of water pollution. According to statistics, the total output of dyes in the world is about 1,000,000 tons per year. Dye wastewater has the characteristics of high chroma, high salinity, and poor biodegradability. If it is directly discharged into water bodies, it will cause great harm to humans and the environment. Rhodamine B is an important water-soluble xanthene organic dye, which is contained in more than half of the wastewater discharged by the textile industry. The presence of rhodamine B will weaken the light transmission of water bodies, reduce the dissolved oxygen in wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/48B01J27/02B01J35/10
CPCC02F1/488C02F1/725B01J27/02C02F2101/308B01J35/61
Inventor 邓靖冯善方马晓雁倪永炯卢遇安程永清
Owner 湖州智清环保科技有限公司
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