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Method for processing dye waste water based on activation of peroxymonosufate by three-dimensional ordered mesoporous CoFe2O4

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 catalyst recovery difficulties, environmental secondary pollution, spinel type Low catalytic performance of cobalt ferrite and other problems, to achieve the effect of simple operation, pollution reduction and energy saving

Active Publication Date: 2016-03-16
湖州智清环保科技有限公司
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  • 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

Method used

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  • Method for processing dye waste water based on activation of peroxymonosufate by three-dimensional ordered mesoporous CoFe2O4
  • Method for processing dye waste water based on activation of peroxymonosufate by three-dimensional ordered mesoporous CoFe2O4

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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 is successively placed in a mortar containing n-hexane and fully ground, and the fully ground material is transferred to a round-bottomed flask filled with n-hexane, and refluxed and stirred for 12 hours under the condition of a 70°C water bath;

[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 tha...

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 processing dye waste water based on activation of peroxymonosufate by three-dimensional ordered mesoporous CoFe2O4 and aims to solve the problem of low catalysis efficiency of present spinel CoFe2O4 to peroxymonosufate. The method is implemented through the following steps: firstly, three-dimensional ordered mesoporous CoFe2O4 is prepared; secondly, dye waste water with an appointed concentration is prepared, and the prepared solution is placed in a brown shake flask; thirdly, peroxymonosufate is added; fourthly, the three-dimensional ordered mesoporous CoFe2O4 is added; fifthly, the three-dimensional ordered mesoporous CoFe2O4 is separated by utilization of an applied magnetic field, and processing of dye in waste water based on activation of peroxymonosufate by three-dimensional ordered mesoporous CoFe2O4 can be completed. High-efficiency processing of dye waste water can be achieved by utilization of three-dimensional ordered mesoporous CoFe2O4 in cooperation with the peroxymonosufate technology, and the removal rate exceeds 90%. The cobalt ion leaching rate is low during the usage process, and environment pollution is reduced. The catalyst can be separated rapidly through an applied magnetic field and can be recycled, and the operation cost is lowered.

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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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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