A method for degrading environmental hormone bisphenol A in water based on ferric tetrasulfide activated persulfate
A technology for activating persulfate and iron tetrasulfide, applied in the field of degradation of environmental organic pollutants, can solve the problems of secondary pollution of the environment, being easily affected by anions such as chloride ions, and difficult to recycle materials
Active Publication Date: 2020-12-11
SOUTH CHINA AGRI UNIV
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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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Comparison scheme
Effect test
Embodiment 1
[0034] In 5mg / L BPA polluted water was added sodium peroxodisulfate, sodium peroxodisulfate such 0.4mM concentration, and added Fe 3 S 4 Such that the material concentration was 0.02g / L. Within 60min, the contaminant removal efficiency of 98% is reached. However, when only the sodium persulfate is added or only added Fe 3 S 4 When the removal of contaminants are less than 2%.
Embodiment 2
[0036] In Example 1, the sodium peroxodisulfate replaced Potassium Peroxymonosulfate, within 60min, the contaminant removal efficiency of 95% is reached. However, when only the sodium persulfate is added or only added Fe 3 S 4 When the removal of contaminants are less than 2%.
Embodiment 3
[0038] At 10mg / L BPA was added sodium peroxodisulfate polluted water, such that a concentration of 0.8 mM sodium peroxodisulfate, and added Fe 3 S 4 Such that the material concentration was 0.04g / L. Within 60min, the contaminant removal efficiency of 98% is reached.
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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 present invention belongs to the technical field environment organic contaminants, particularly relates to iron based tetrasulfide through activation of sulphate degradation of bisphenol A Water environmental hormone. Background technique [0002] Bisphenol A, abbreviated as English of BPA, the polycarbonate synthesis and are widely used on an industrial material such as epoxy resin, or even be used to make plastic bottles, beverage cans suction cup and the inner coating and the like. BPA is everywhere, from our life plastic water bottles to medical devices has its presence. However, the study found that BPA is an environmental hormone, can cause endocrine disorders, threatening the health of humans, especially fetuses and young children. Many governments have used in recent ban BPA in baby bottles. However, with the development of industry and life in plastic waste emissions, BPA can be seen in the industrial source of water and life water everywhere. ...
Claims
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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