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Preparation method and application of poly brominated diphenyl ether polluted water repair material

A polybrominated diphenyl ether and water body restoration technology, which is applied in the fields of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of heavy metal pollution, degradation and poisoning of low-brominated diphenyl ethers, etc., and achieves short restoration time and easy promotion. Ease of use and operation

Inactive Publication Date: 2016-12-07
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified metals may be precipitated during the reaction, resulting in heavy metal pollution; at the same time, in the process of degrading PBDEs, due to incomplete degradation, more toxic low-brominated diphenyl ethers, such as pentabromodiphenyl ether, may be produced

Method used

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  • Preparation method and application of poly brominated diphenyl ether polluted water repair material
  • Preparation method and application of poly brominated diphenyl ether polluted water repair material
  • Preparation method and application of poly brominated diphenyl ether polluted water repair material

Examples

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Embodiment 1

[0055] Embodiment 1: a kind of preparation method of biochar particles, the steps are:

[0056]1) The bagasse is washed, air-dried, and ground by a pulverizer;

[0057] 2) Put the treated sugarcane powder into a crucible, then place it in a muffle furnace, and under the protection of nitrogen, deoxidize and carbonize at a set temperature of 600°C, and continue after reaching the set temperature at a heating rate of 20°C / min Carbonize for 2 hours, and after the temperature of the muffle furnace drops to room temperature, take out the black residue, grind it, pass it through a 60-120 mesh sieve, and seal it for storage.

Embodiment 2

[0059] Embodiment 2: a kind of preparation method of biochar-supported nano-nickel-iron particles, the steps are:

[0060] 1) Prepare 100ml 0.07mol / L FeSO with 30% v / v ethanol solution 4 ·7H 2 The solution of O was stirred at a speed of 300rpm to dissolve and mix evenly, then the biochar particles prepared in Example 2 (the mass ratio of nanometer zero-valent iron to biochar was 1:1) was added therein, and stirred at a speed of 400rpm 1h, make it dissolve and mix to obtain solution A;

[0061] 2) Prepare 50ml of 0.3mol / L sodium borohydride solution with 30% v / v ethanol solution, add it dropwise to solution A under protective atmosphere (nitrogen), and continue to stir the reaction at a speed of 400rpm 30min, and then separated by magnetic separation, after washing, 50ml of 30% v / v ethanol solution was added to obtain solution B.

[0062] 3) Prepare 50ml of 0.2mol / L NiCl with 30% v / v ethanol solution 2 ·6H 2 O solution was quickly added to solution B under stirring conditi...

Embodiment 3

[0064] The preparation method of embodiment 3 nanometer Ni / Fe-biochar composite material

[0065] 1) Prepare 100ml 0.07mol / L FeSO with 30% v / v ethanol solution 4 ·7H 2 The solution of O was stirred at a speed of 300rpm to make it dissolve and mix evenly, then the biochar particles prepared in Example 2 (the mass ratio of nanometer zero-valent iron to biochar was 1:0.5) was added therein, and stirred at a speed of 400rpm 1h, make it dissolve and mix to obtain solution A;

[0066] 2) Prepare 50ml of 0.3mol / L sodium borohydride solution with 30% v / v ethanol solution, add it dropwise to solution A under protective atmosphere (nitrogen), and continue to stir the reaction at a speed of 400rpm 30min, and then separated by magnetic separation, after washing, 50ml of 30% v / v ethanol solution was added to obtain solution B.

[0067] 3) Prepare 50ml of 0.2mol / L NiCl with 30% v / v ethanol solution 2 ·6H 2 O solution, quickly added to solution B under stirring conditions at 400rpm and ...

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Abstract

The invention discloses a preparation method of a charcoal load type nanometer ferro-nickel composite material and application thereof for removing poly brominated diphenyl ethers in water. The method comprises the steps that ferric salt or ferrite is dissolved into an ethanol water solution and mixed to be uniform, then, charcoal particles are added, stirred and mixed to be uniform, and a solution A is obtained; an ethanol water solution containing a reducing agent is added into the solution A, after the stirring reaction is complete, a reaction product is separated out, after cleaning is thorough, the product is added into the ethanol water solution, and a solution B is obtained; an ethanol water solution containing nickel salt is dropped into a solution B, after the stirring reaction is completed, a product material is separated out, washing and drying are performed, and then the charcoal load type nanometer ferro-nickel composite material is obtained. The nanometer ferro-nickel dual-metal particles are loaded on charcoal, the reactivity and stability of the nanometer ferro-nickel particles are improved, and water pollution in-situ repair is promoted; the method can be used for repairing high-concentration PBDEs pollution water, and the repair efficiency is high.

Description

technical field [0001] The invention relates to a preparation method and application of a polybrominated diphenyl ether-contaminated water body restoration material. Background technique [0002] Polybrominated diphenyl ethers (PBDEs) have been mass-produced and commercialized as a class of additive flame retardants, especially decabromodiphenyl ether (BDE209) has been listed as a priority pollutant. In recent years, BDE209 has been detected in different environmental media such as water, air, soil and sediment. Due to the refractory and bioaccumulation of BDE209, it reaches a significant level in the organism and produces toxic effects. Therefore, it is very important to study the removal method of BDE209. [0003] The traditional PBDE removal methods are mainly biodegradation and photodegradation, but biodegradation cannot completely degrade pollutants, and even produce intermediate products with high toxicity and longer persistence. Other methods need to be further sele...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/70C02F1/58C02F101/36C02F101/34
CPCC02F1/288C02F1/705C02F2101/34C02F2101/36
Inventor 方战强易云强
Owner SOUTH CHINA NORMAL UNIVERSITY
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