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Removal of environmental pollutant tetrabro-bisphenol A

An environmental pollutant, tetrabromobisphenol technology, applied in the field of environmental restoration, to achieve the effect of easy formation of large-scale production, wide application prospects, and realization of recycling

Inactive Publication Date: 2008-02-06
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Control the reaction temperature from 20°C to 100°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: In a 500 ml three-necked flask, install a thermometer and a stirrer, add tetrabromobisphenol A (1.0 mmol, 624 mg), Ni-Al alloy (10 g), water (100 ml), and then start stirring Heat to 90°C. A 1% aqueous sodium carbonate solution (100 mL) was added dropwise over 1 hour. The reaction temperature is controlled to be 90°C-100°C. After the dropwise addition of the 1% sodium carbonate aqueous solution was completed, the mixture was further stirred at the same temperature for 5 hours. Then, it was cooled to room temperature, filtered, insoluble matter was removed by filtration, the aqueous solution was extracted with ethyl acetate, the organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. Then, the concentrated product was analyzed by high pressure liquid chromatography, and the conversion rate of tetrabromobisphenol A was 100%.

Embodiment 2

[0015] Example 2: In a 500 ml three-necked flask, install a thermometer, a stirrer, tetrabromobisphenol A (1.0 mmol, 624 mg), Ni-Al alloy (8 g), water (100 ml), and then start stirring and heating to 90°C. A 2% aqueous potassium carbonate solution (100 mL) was added dropwise over 2 hours. The reaction temperature is controlled to be 90°C-100°C. After the dropwise addition of the 2% potassium carbonate aqueous solution was completed, the mixture was further stirred at the same temperature for 4 hours. Then, it was cooled to room temperature, filtered, insoluble matter was removed by filtration, the aqueous solution was extracted with ethyl acetate, the organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. Then, the concentrated product was analyzed by high pressure liquid chromatography, and the conversion rate of tetrabromobisphenol A was 100%.

Embodiment 3

[0016] Example 3: In a 500 ml three-necked flask, install a thermometer and a stirrer, add tetrabromobisphenol A (1.0 mmol, 624 mg), Ni-Al alloy (2 g), water (100 ml), and then start stirring Heat to 90°C. Aqueous 0.2% sodium carbonate solution (100 mL) was added dropwise over 1 hour. The reaction temperature is controlled to be 90°C-100°C. After the dropwise addition of the 0.2% sodium carbonate aqueous solution was completed, the mixture was further stirred at the same temperature for 6 hours. Then, it was cooled to room temperature, filtered, insoluble matter was removed by filtration, the aqueous solution was extracted with ethyl acetate, the organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. Then, the concentrated product was analyzed by high pressure liquid chromatography, and the conversion rate of tetrabromobisphenol A was 100%.

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Abstract

Method for removing environmental pollutant ethylene bisphenol A is carried out by dripping carbonate solution into ethylene bisphenol A, Ni-Al alloy and solution while agitating and heating, reacting Ni-Al alloy with carbonate solution to produce hydrogen, reducing and debrominating ethylene bisphenol A into reactive product bisphenol A. It is simple and convenient, has higher reutilization and no environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, in particular to a method for removing tetrabromobisphenol A, a toxic and harmful environmental pollutant. Background technique [0002] The environmental pollution of persistent toxic chemicals is the same as the destruction of the ozone layer and the greenhouse effect, and is called the three major environmental problems affecting human survival and health in the 21st century. As a brominated flame retardant, tetrabromobisphenol A is mainly used in household appliances such as televisions, computers, automobile products, plastics, rubber, phenolic resins and other polymer materials. According to statistics, in 1999, the world developed National production is 120,000 tons. After the toxic and harmful environmental pollutant tetrabromobisphenol A is absorbed by the human body, it will lead to the decline of male sperm motility and the mutation of female eggs. As a result, human...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C02F1/70C02F9/04C02F101/34
Inventor 刘国斌戴鹭李妙葵高翔
Owner FUDAN UNIV
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