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A method for removing endocrine disruptors in water by activating monopersulfate using cerium-iron dual-phase supported graphene oxide

A technology of endocrine disruptors and persulfates, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of difficult recovery of adsorbents, low removal efficiency, and many by-products, and achieve easy Recycling and regeneration, fast response, and low cost effects

Inactive Publication Date: 2017-01-11
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 high cost, many by-products, difficult recovery of adsorbent and low removal efficiency of the existing method for removing endocrine disruptors in water, and to provide a single-pass activated cerium-iron dual-phase loaded graphene oxide. Sulphate method for removing endocrine disruptors from water

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  • A method for removing endocrine disruptors in water by activating monopersulfate using cerium-iron dual-phase supported graphene oxide
  • A method for removing endocrine disruptors in water by activating monopersulfate using cerium-iron dual-phase supported graphene oxide
  • A method for removing endocrine disruptors in water by activating monopersulfate using cerium-iron dual-phase supported graphene oxide

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specific Embodiment approach 1

[0036] Specific embodiment one: This embodiment is a kind of method that utilizes cerium-iron dual-phase loaded graphene oxide to activate monopersulfate to remove endocrine disruptors in water and is completed according to the following steps:

[0037] 1. Mix the monopersulfate with the pretreated water: Mix the monopersulfate with the pretreated water, and 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 the step 1 is one or the mixture of several in potassium monopersulfate, ammonium monopersulfate, sodium monopersulfate and calcium monopersulfate;

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

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

[0041] 2. Adjust the pH v...

specific Embodiment approach 2

[0067] Embodiment 2: The difference between this embodiment and 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 to 1000W. Other steps are the same as in the first or second embodiment.

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Abstract

A method for removing endocrine disruptors in water by using cerium-iron dual-phase loaded graphene oxide to activate monopersulfate, which relates to a method for removing endocrine disruptors in water. The purpose of the invention is to solve the problems of high cost, many by-products, difficult recovery of adsorbent and low removal efficiency of the existing method for removing endocrine disruptors in water. Method: 1. Mix monopersulfate with pretreated water; 2. Adjust the pH value of the reaction; 3. Prepare cerium-iron dual-phase supported graphene oxide; 4. Add iron-manganese dual-phase doped graphene; 5. Using an external magnetic field to separate iron-manganese dual-phase doped graphene is to complete a method for using cerium-iron dual-phase loaded graphene oxide to activate monopersulfate to remove endocrine disruptors in water. The removal rate of endocrine disruptors in water by using the method of the invention can reach 88%-97%. The invention can remove residual endocrine disruptors in water.

Description

technical field [0001] The invention relates to a method for removing endocrine disruptors in water. Background technique [0002] With the acceleration of industrialization, the problem of environmental pollution has become more and more serious, and the problem of water pollution has attracted more and more people's attention. Trace organic substances in water, such as personal care products such as phenols and aniline, endocrine disruptors, etc.; although the content of endocrine disruptors in water is small, they will gradually accumulate and concentrate; endocrine disruptors are highly stable, toxic and harmful. Pollutants will gradually accumulate in the urban water cycle, posing a great threat to water quality. [0003] At present, the commonly used methods for removing EDCs in water environment at home and abroad include biological methods, physicochemical methods, electrochemical methods and membrane filtration methods. Due to the toxic effect of EDCs on organisms...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 郭洪光杨颖张永丽梁大山刘杨
Owner SICHUAN UNIV