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Method for degrading environmental hormone bisphenol A in water based on ferric sulfide activated persulfate

A technology for activating persulfate and ferric tetrasulfide, applied in the field of environmental organic pollutant degradation, can solve the problems of being easily affected by anions such as chloride ions, high cost of heterogeneous materials, and difficult to recycle materials, achieving easy promotion, Energy saving and easy operation

Active Publication Date: 2019-04-16
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention aims to solve the shortcomings of the traditional homogeneous advanced oxidation water treatment method that materials are difficult to recycle, easily cause secondary pollution to the environment, and be easily affected by anions such as chloride ions, and the high cost of heterogeneous materials mainly based on zero-valent iron Not easy to preserve and other problems, a method based on ferric tetrasulfide activated persulfate to degrade the environmental hormone bisphenol A in water was proposed

Method used

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  • Method for degrading environmental hormone bisphenol A in water based on ferric sulfide activated persulfate
  • Method for degrading environmental hormone bisphenol A in water based on ferric sulfide activated persulfate

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Add sodium peroxodisulfate to the water contaminated with 5mg / L BPA to make the concentration of sodium peroxodisulfate 0.4mM, and add Fe 3 S 4 , So that the material concentration is 0.02g / L. Within 60 minutes, the removal rate of this pollutant reached 98%. However, when only sodium peroxodisulfate or only Fe is added 3 S 4 At that time, the removal rate of pollutants is less than 2%.

Embodiment 2

[0036] As in Example 1, the sodium peroxodisulfate was replaced with potassium persulfate, and the removal rate of the pollutant reached 95% within 60 minutes. However, when only sodium peroxodisulfate or only Fe is added 3 S 4 At that time, the removal rate of pollutants is less than 2%.

Embodiment 3

[0038] Add sodium peroxodisulfate to the water contaminated with 10mg / L BPA to make the concentration of sodium peroxodisulfate 0.8mM, and add Fe 3 S 4 , Making the material concentration 0.04g / L. Within 60 minutes, the removal rate of this pollutant reached 98%.

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Abstract

The invention discloses a method for degrading environmental hormone bisphenol A in water based on ferric sulfide activated persulfate and belongs to the technical field of degradation of environmental organic pollutants. According to the method, ferric sulfide is used as an activation agent, persulfate (including persulfacte and peroxymonosulfate) is used as an oxidizing agent, single or composite organic pollutants in the water are degraded, the removal rate of hormone bisphenol A reaches above 95%, and the highest removal rate of hormone bisphenol A can reach 98%. According to the method, the reaction conditions can be conducted at the normal temperature and pressure, materials can be recycled through magnetic force, the application pH range is wide, the efficiency is high, and the method is environmentally friendly. Meanwhile, chloride ions, with high concentration, in the water have little influence on pollutant degradation through ferric sulfide activated persulfate. According tothe method, the applied material cannot cause secondary pollution, additional energy such as light and ultrasound does not need to be provided, the energy is saved, and the method is easy and convenient to operate and easy to popularize. Therefore, the method has wide application prospects in the aspect of organic pollutant repairing of the water.

Description

Technical field [0001] The invention belongs to the technical field of degradation of environmental organic pollutants, and specifically relates to a method for degrading environmental hormone bisphenol A in water bodies based on ferric tetrasulfide activated persulfate. Background technique [0002] Bisphenol A, abbreviated as BPA in English, is widely used in the industry to synthesize materials such as polycarbonate and epoxy resin, and even used to make plastic bottles, mouthpieces, and coatings on the inside of beverage cans. BPA is everywhere, from plastic water bottles in our lives to medical equipment. However, studies have found that BPA is an environmental hormone that can cause endocrine disorders and threaten the health of humans, especially fetuses and young children. Many governments have recently banned the use of BPA in baby bottles. However, with the development of industry and the discharge of domestic plastic waste, BPA can be seen everywhere in industrial so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/34
CPCC02F1/725C02F2101/345C02F2305/023
Inventor 林学明李永涛蚁佳纯柯美国
Owner SOUTH CHINA AGRI UNIV
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