Method for removing endocrine disruptors in water by using cobalt-doped magnetic redox graphene to work in coordination with persulfate

A technology for endocrine disruptors and persulfates, applied in chemical instruments and methods, oxidized water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as toxic by-products, high cost, and poor removal effect , to achieve the effect of low cost, fast response and low volatility

Inactive Publication Date: 2015-05-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor removal effect, high cost and toxic by-products of the existing methods for removing

Method used

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  • Method for removing endocrine disruptors in water by using cobalt-doped magnetic redox graphene to work in coordination with persulfate
  • Method for removing endocrine disruptors in water by using cobalt-doped magnetic redox graphene to work in coordination with persulfate
  • Method for removing endocrine disruptors in water by using cobalt-doped magnetic redox graphene to work in coordination with persulfate

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specific Embodiment approach 1

[0036] Specific embodiment one: a kind of method that utilizes cobalt-doped magnetic redox graphene to cooperate with persulfate to remove endocrine disruptors in water is completed according to the following steps:

[0037] 1. Mix persulfate with pretreated water: mix persulfate with pretreated water, then stir for 20min to 45min at room temperature and at a stirring speed of 160r / min to 250r / min to obtain persulfuric acid Mixed solution of salt and pretreated water;

[0038] The persulfate described in step 1 is one or a mixture of several of them in potassium persulfate, ammonium persulfate, sodium persulfate and calcium persulfate;

[0039] The concentration of endocrine disruptors in the pretreated water described in step 1 is 0.02 mg / L-100 mg / L;

[0040] The mass ratio of the quality of persulfate described in step 1 and the pretreated water is 1:(1000~10000);

[0041] 2. Adjust the pH value of the reaction: use 0.1mol / L~100mol / L perchloric acid and 0.1mol / L~100mol / L s...

specific Embodiment approach 2

[0067] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the endocrine disruptors described in step 1 are estrone, 17α-ethinyl estradiol, 17α-estradiol, 17β-estradiol, One or a mixture of estriol, diethylstilbestrol, nonylphenol, bisphenol A and octylphenol. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0068] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the power of the ultrasonic oscillator described in Step 3 ① is 100W-1000W. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for removing endocrine disruptors in water by using cobalt-doped magnetic redox graphene to work in coordination with a persulfate and relates to a method for removing the endocrine disruptors in the water. The invention aims at solving the problems of poor removal effect, high cost and production of toxic byproducts of the existing method for removing the endocrine disruptors in the water. The method comprises the following steps: 1) mixing the persulfate with the water after pretreatment; 2) regulating a reaction pH value; 3) preparing cobalt-doped magnetic redox graphene; 4) putting cobalt-doped magnetic redox graphene; and 5) separating cobalt-doped magnetic redox graphene by adopting an external magnetic field, thereby completing the method for removing the endocrine disruptors in the water by using cobalt-doped magnetic redox graphene to work in coordination with the persulfate. By using the method disclosed by the invention, the removal rate in removal of the endocrine disruptors in the water can achieve 88%-95%. By using the method disclosed by the invention, the endocrine disruptors in the water can be removed.

Description

technical field [0001] The invention relates to a method for removing endocrine disruptors in water. Background technique [0002] With the development of science and technology, the continuous pollution of water resources has become increasingly serious. At the same time, the improvement of living standards has also made people's requirements for the safety of drinking water increasingly stringent. The development of new materials and technologies has led to an increasing number of pollutants in the water environment. Water pollutants such as endocrine disrupting chemicals (EDCs) enter the water through incompletely treated domestic sewage, pharmaceutical wastewater or manure runoff from livestock aquaculture. environment, and the concentration will increase hundreds of times after enrichment in water. Even trace levels of EDCs can cause carcinogenicity, mutagenesis, and interference with reproductive system and hormone secretion to humans and organisms exposed to them for...

Claims

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Application Information

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IPC IPC(8): C02F9/04C01B31/04B01J20/20B01J20/28B01J20/30C02F1/72C02F1/28
Inventor 张永丽郭洪光梁大山刘杨杨颖
Owner SICHUAN UNIV
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