Fe3O4/Fe<0>/coke biomimetic catalyst capable of degrading POPs (persistent organic pollutants) and preparation method of catalyst

A catalyst and coke technology, which is applied in the field of Fe3O4/Fe0/coke imitation enzyme catalyst for degrading POPs and its preparation, can solve the problems of easy agglomeration of the catalyst, high cost of the carrier, and difficulty in practical application, so as to achieve easy availability of raw materials and increase removal efficiency , low cost effect

Inactive Publication Date: 2015-12-16
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the carrier used in this technology is high and it is difficult to be practically applied
Fe is also useful 3 o 4 / Fe 0 Wastewater treatment, such as "nanoscale Fe 0 / Fe 3 o 4 The preparation method and its application” (CN101306862A) patent technology, the catalyst prepared by this technology is easy to agglomerate, and this technology is applied to the restoration of Cr(Ⅵ) polluted water body, only for simple physical adsorption, there is secondary pollution

Method used

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  • Fe3O4/Fe&lt;0&gt;/coke biomimetic catalyst capable of degrading POPs (persistent organic pollutants) and preparation method of catalyst
  • Fe3O4/Fe&lt;0&gt;/coke biomimetic catalyst capable of degrading POPs (persistent organic pollutants) and preparation method of catalyst
  • Fe3O4/Fe&lt;0&gt;/coke biomimetic catalyst capable of degrading POPs (persistent organic pollutants) and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of Fe that degrades POPs 3 o 4 / Fe 0 Coke imitation enzyme catalyst and preparation method thereof. The concrete steps of this embodiment are:

[0035] Step 1. Press FeSO 4 ·7H 2 The mass ratio of O: coke: deoxygenated and deionized water is 1: (0.2~0.3): (40~60), FeSO 4 ·7H 2 O. Mix coke and deoxygenated deionized water evenly, place in a reaction kettle, and stir for 20-30min under the conditions of 25-30°C and 800-1200r / min to obtain a suspension.

[0036] Step 2. Press NaBH 4 The mass ratio of solution:suspension is 1:(40~60), NaBH 4 Add the solution into the suspension at a constant speed, and the adding time is 40~60min. Then stir at 25-30°C and 1500-2000r / min for 30-60min, then place the stirred solution in the magnetic field for 5-15min, and separate after standing to obtain solid product Ⅰ. The solid product I was washed alternately with deoxygenated deionized water and absolute ethanol until neutral, and finally dried in a vacuum oven at 65-85...

Embodiment 2

[0043] A kind of Fe that degrades POPs 3 o 4 / Fe 0 Coke imitation enzyme catalyst and preparation method thereof. The concrete steps of this embodiment are:

[0044] Step 1. Press FeSO 4 ·7H 2 The mass ratio of O: coke: deoxygenated and deionized water is 1: (0.3~0.4): (60~70), FeSO 4 ·7H 2 O. Mix coke and deoxygenated deionized water evenly, place in a reaction kettle, and stir for 20-30min under the conditions of 25-30°C and 800-1200r / min to obtain a suspension.

[0045] Step 2. Press NaBH 4 The mass ratio of solution:suspension is 1:(60~70), NaBH 4 Add the solution into the suspension at a constant speed, and the adding time is 40~60min. Then stir at 25-30°C and 1500-2000r / min for 30-60min, then place the stirred solution in the magnetic field for 5-15min, and separate after standing to obtain solid product Ⅰ. The solid product I was washed alternately with deoxygenated deionized water and absolute ethanol until neutral, and finally dried in a vacuum oven at 65-85...

Embodiment 3

[0052] A kind of Fe that degrades POPs 3 o 4 / Fe 0 Coke imitation enzyme catalyst and preparation method thereof. The concrete steps of this embodiment are:

[0053] Step 1. Press FeSO 4 ·7H 2 The mass ratio of O: coke: deoxygenated and deionized water is 1: (0.4~0.5): (70~80), FeSO 4 ·7H 2 O. Mix coke and deoxygenated deionized water evenly, place in a reaction kettle, and stir for 20-30min under the conditions of 25-30°C and 800-1200r / min to obtain a suspension.

[0054] Step 2. Press NaBH 4 The mass ratio of solution:suspension is 1:(70~80), NaBH 4 Add the solution into the suspension at a constant speed, and the adding time is 40~60min. Then stir at 25-30°C and 1500-2000r / min for 30-60min, then place the stirred solution in the magnetic field for 5-15min, and separate after standing to obtain solid product Ⅰ. The solid product I was washed alternately with deoxygenated deionized water and absolute ethanol until neutral, and finally dried in a vacuum oven at 65-85...

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Abstract

The invention relates to a Fe3O4/Fe<0>/coke biomimetic catalyst capable of degrading POPs (persistent organic pollutants) and a preparation method of the catalyst. According to the scheme, FeSO4*7H2O, coke and deoxygenization deionized water are mixed at the mass ratio of 1 to (0.2-0.6) and (40-100) and are stirred, to obtain a suspension; a NaBH4 solution is added to the suspension in the mass ratio of the NaBH4 solution to the suspension being 1:(40-100), and Fe<0>/coke is obtained through separation; blending is performed in the mass ratio of the Fe<0>/coke to the deoxygenization deionized water being 1:(50-100), and a suspension containing the Fe<0>/coke is obtained through stirring; blending is performed in the mass ratio of a FeSO4*7H2O solution to the suspension containing the Fe<0>/coke being (3-7):(50-100), the materials are mixed uniformly and heated, and a catalyst precursor suspension is obtained; finally, NaOH, NaNO3 and the catalyst precursor suspension are mixed uniformly in the mass ratio of 1 to (1-1.5) to (50-100), and the Fe3O4/Fe<0>/coke biomimetic catalyst is obtained through separation. The Fe3O4/Fe<0>/coke biomimetic catalyst capable of degrading the POPs (persistent organic pollutants) and the preparation method of the catalyst have the characteristics of available raw materials, low cost, high efficiency and environment-friendliness.

Description

technical field [0001] The invention belongs to Fe 3 o 4 / Fe 0 / Coke imitation enzyme catalyst technical field. Specifically related to a Fe that degrades POPs 3 o 4 / Fe 0 Coke imitation enzyme catalyst and preparation method thereof. Background technique [0002] Coking wastewater is a typical organic industrial wastewater with high concentration of pollutants, complex composition, large treatment volume and difficult biochemical treatment. Among them, organic pollutants include heterocyclic and polycyclic aromatic hydrocarbons such as phenols, quinolines, pyridines, and naphthalene. It is a typical type of persistent organic pollutants (POPs) that cause great harm to human health. It must be degraded by green catalysts and meet the relevant national standards before it can be discharged. [0003] Among the treatment methods of coking wastewater, the biochemical treatment method is widely used. Among them, the activated sludge method has relatively good quality of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/00C02F101/38C02F101/34C02F101/32
Inventor 王光华李文兵卢露露万栋王晴东魏晓币胡琴
Owner WUHAN UNIV OF SCI & TECH
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