Composite capable of efficiently degrading tetrabromobisphenol A, as well as preparation method and application method of composite

A technology of tetrabromobisphenol and composite materials, which is applied in chemical instruments and methods, catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, etc., can solve high energy consumption, low efficiency, and secondary pollution and other problems, to achieve high degradation efficiency, high removal efficiency, and less by-products

Active Publication Date: 2016-11-16
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems of low efficiency, high energy consumption, generation of brominated phenol, generation of carcinogenic ion bromate and the introduction of heavy metal ions into the environment to easily form secondary pollution in the existing methods for degrading TBBPA, the invention provides a method for improving tetraamid...

Method used

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  • Composite capable of efficiently degrading tetrabromobisphenol A, as well as preparation method and application method of composite
  • Composite capable of efficiently degrading tetrabromobisphenol A, as well as preparation method and application method of composite
  • Composite capable of efficiently degrading tetrabromobisphenol A, as well as preparation method and application method of composite

Examples

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Effect test

Embodiment 1

[0063] A method for improving tetraamidohexamethylphenyl ring iron degradation tetrabromobisphenol A efficiency and reutilization rate, the steps are:

[0064] (1) Prepare MgCl containing 3.0mmol 2 and 1.0 mmol AlCl 3 10 milliliters of the mixed solution, and the prepared mixed solution was added to 40 milliliters of 0.15M NaOH solution under vigorous stirring (stirring speed is 1000 rpm) within 5 seconds, then isolated from the air and shaken for 30 minutes, and then centrifuged repeatedly three times. The centrifuged LDH slurry was dispersed into 40 ml of deionized water, and placed in a sterilized pot for hydrothermal treatment at 100 degrees Celsius for 16 hours to obtain a homogeneous suspension of LDH. Quantify the LDH homogeneous suspension, the quantitative method is: weigh the mass of the 20mL glass tube as m 1; Draw 10mL of LDH suspension into a 20mL glass tube, and then place it in a vacuum drying oven at 50°C for 48 hours to ensure that the LDH is absolutely dry...

Embodiment 2

[0070] A method for improving tetraamidohexamethylphenyl ring iron degradation tetrabromobisphenol A efficiency and reutilization rate, the steps are:

[0071] (1) Prepare MgCl containing 3.0mmol 2 and 1.0 mmol AlCl 3 10 milliliters of the mixed solution, the prepared mixed solution was added to 40 milliliters of 0.15M NaOH solution under vigorous stirring (stirring speed is 1200 rpm) within 5 seconds, then isolated from the air and shaken for 35 minutes, then centrifuged and washed repeatedly three times. The centrifuged LDH slurry was dispersed into 40 ml of deionized water, and placed in a sterilized pot for hydrothermal treatment at 150 degrees Celsius for 10 hours to obtain a homogeneous suspension of LDH. The LDH homogeneous suspension was quantified, the quantification method was the same as in Example 1, and the concentration of LDH obtained by quantification was 30 mg / mL.

[0072] (2) 100 mg of freshly prepared LDH was placed in 10 mL of FeB* solutions of different...

Embodiment 3

[0075] A method for improving tetraamidohexamethylphenyl ring iron degradation tetrabromobisphenol A efficiency and reutilization rate, the steps are:

[0076] (1) Prepare MgCl containing 3.0mmol 2 and 1.0 mmol AlCl 3 10 milliliters of the mixed solution, the prepared mixed solution was added to 40 milliliters of 0.15M NaOH solution under vigorous stirring (stirring speed was 1500 rpm) within 5 seconds, then isolated from the air and shaken for 30 minutes, then centrifuged repeatedly three times. The centrifuged LDH slurry was dispersed into 40 ml of deionized water, and placed in a sterilized pot for hydrothermal treatment at 130 degrees Celsius for 12 hours to obtain a homogeneous suspension of LDH. The LDH homogeneous suspension was quantified, and the concentration was 30 mg / mL.

[0077] (2) 100 mg of freshly prepared LDH was placed in 10 mL of FeB* solutions of different concentrations (10, 25, 50, 103, 251, 504, 1038, 2512, 5024, 10541 μmol / L) and stirred for 24 hours...

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Abstract

The invention discloses a composite capable of efficiently degrading tetrabromobisphenol A, as well as a preparation method and application method of the composite, belongs to the field of degradation of persistent organic pollutants, and solves the problems that the energy consumption is high, the operation is complex and secondary pollution is easy to form existing in a conventional degradation method. According to the composite and the preparation method and application method thereof disclosed by the invention, magnesium-aluminum layered double hydroxide(LDH) is used as a carrier for loading FeB*, and through ion exchange, the loading of the FeB* is realized; when the FeB* is compared with free-state FeB*, the composite FeB*-LDH obtained through ion exchange effects not only promotes the removal of TBBPA, a debromination rate and a mineralization rate, but also realizes the separation of the FeB* from an aqueous solution, so that the recycling properties of the FeB* are increased.

Description

technical field [0001] The invention belongs to the field of persistent organic pollutant degradation, and more specifically relates to a composite material for efficiently degrading tetrabromobisphenol A, a preparation method and an application method thereof. Background technique [0002] The hydrogen peroxide catalyst tetraamidohexamethylphenyl cycloiron (referred to as tetraamide cycloiron, FeB*) can almost completely mineralize chlorophenols within a few minutes, so it is called a green catalyst (S.S.Gupta, M .Stadler, et al., Rapid Total Destruction of Chlorophenols by Activated Hydrogen Peroxide, Science 296(2002) 326-328; K. Mierzwicki, S. Berski, et al., AIM and ELF analysis of the H-, Me-, and F-substituted FeIII–TAML complexes, Chemical Physics Letters 507(2011) 29-36). Currently FeB* has been used to degrade organophosphorus pesticides (A.Chanda, S.K.Khetan, et al., Total Degradation of Fenitrothion and Other Organophosphorus Pesticides by Catalytic Oxidation Em...

Claims

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Application Information

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IPC IPC(8): B01J31/26C02F1/72C02F101/36
CPCB01J31/26B01J37/30B01J2531/842C02F1/725C02F2101/36
Inventor 谷成王超
Owner NANJING UNIV
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