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Method for removing endocrine disruptors in water by using iron and manganese double-phase-doped graphene to activate single persulfate

A technology for endocrine disruptors and persulfates, applied in the direction of water pollutants, iron compounds, chemical instruments and methods, etc., can solve the problems of high cost and low removal efficiency of endocrine disruptors in water, and achieve fast and easy reaction Effects of recovery and recycling and cost reduction

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 problem of low removal efficiency and high cost of the existing method for removing endocrine disruptors in water, and provide a method for using iron-manganese dual-phase doped graphene to activate monopersulfate to remove endocrine disruptors in water

Method used

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  • Method for removing endocrine disruptors in water by using iron and manganese double-phase-doped graphene to activate single persulfate
  • Method for removing endocrine disruptors in water by using iron and manganese double-phase-doped graphene to activate single persulfate
  • Method for removing endocrine disruptors in water by using iron and manganese double-phase-doped graphene to activate single persulfate

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specific Embodiment approach 1

[0036] Specific embodiment one: this embodiment is a kind of method that utilizes iron-manganese dual-phase doped graphene to activate monopersulfate to remove endocrine disruptors in water, and it is completed according to the following steps:

[0037] 1. Mix monopersulfate with pretreated water: mix monopersulfate 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 A mixed solution of monopersulfate and pretreated water;

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

[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 monopersulfate described in step 1 and the pretreated water is 1:(1000~10000);

[0041] 2. Adjust the pH value of the reaction: use 0...

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 iron and manganese double-phase-doped graphene to activate a single persulfate and relates to a method for removing the endocrine disruptors in the water. The invention aims at solving the problems of low removal efficiency and high cost of the existing method for removing the endocrine disruptors in the water. The method comprises the following steps: 1) mixing the single persulfate with the water after pretreatment; 2) regulating a reaction pH value; 3) preparing iron and manganese double-phase-doped graphene; 4) putting iron and manganese double-phase-doped graphene; and 5) separating iron and manganese double-phase-doped graphene by adopting an external magnetic field, thereby completing the method for removing the endocrine disruptors in the water by using iron and manganese double-phase-doped graphene to activate the single persulfate. By using the method disclosed by the invention, the removal rate in removal of the endocrine disruptors in the water can achieve 85%-96%. 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] Endocrine disrupting chemicals (EDCs) enter the water environment through incompletely treated domestic sewage, pharmaceutical wastewater or livestock and aquaculture manure runoff, 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 a long time. Since the above-mentioned substances are frequently used and enter the environmental water body, they form a "pseudo-persistent" phenomenon, which in turn constitutes a long-term potential hazard to human health and the entire ecosystem. [0003] At present, chlorination, ozone and advanced oxidation processes are mainly used to treat trace organic pollutants in water (endocrine disruptors, antibiotics, ...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F1/28C02F1/72C01G49/00C02F101/30
Inventor 张永丽杨颖郭洪光梁大山
Owner SICHUAN UNIV
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