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Preparation method of supported transition metal catalyst utilizing iron tailings as carrier and method for degrading organic pollutants

A technology of organic pollutants and transition metals, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost and time-consuming preparation, and achieve Low cost, easy to separate, good removal effect

Active Publication Date: 2013-12-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned supporting materials have some disadvantages, such as the preparation is time-consuming and the cost is high

Method used

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  • Preparation method of supported transition metal catalyst utilizing iron tailings as carrier and method for degrading organic pollutants
  • Preparation method of supported transition metal catalyst utilizing iron tailings as carrier and method for degrading organic pollutants
  • Preparation method of supported transition metal catalyst utilizing iron tailings as carrier and method for degrading organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of iron tailings supported cobalt catalyst

[0033] 1) Grind iron tailings to a particle size of 0.1-1.0mm, calcinate at 900°C for 6 hours, then add nitric acid solution with a mass concentration of 66%, the mass ratio of iron tailings to nitric acid solution is 2:1, and stir at room temperature for reaction 2 hours, washed to neutral and ground, then roasted at 500°C for 2 hours to obtain activated iron tailings;

[0034] 2) 3g of the activated iron tailings and cobalt acetate tetrahydrate (Co(CH 3 COO) 2 4H 2 O) Mix 0.6338g, add water to 150mL, stir magnetically at room temperature for 1 hour, add ammonia water to adjust the pH to >10, continue stirring at room temperature for 1 hour, dry and calcinate at 500°C for 2 hours to obtain a supported transition metal cobalt catalyst; The loading of Co is 5%.

[0035] 2. Degradation of organic pollutants

[0036] Weigh 20mg of the supported transition metal cobalt catalyst prepared in step 1, add the prep...

Embodiment 2

[0038] 1. Preparation of iron tailings supported cobalt catalyst

[0039] The preparation method of the supported transition metal cobalt catalyst in this example is the same as in Example 1.

[0040] 2. Degradation of organic pollutants

[0041] Weigh 20mg of the supported transition metal cobalt catalyst prepared in step 1, add the prepared 20mg / L methyl orange solution to simulate organic wastewater (V=200mL), and add 100mg of oxidant permonomonosulfate (PMS), at 25 ℃ under a constant temperature water bath for 2 hours, the degradation rate of organic pollutants reached 100%.

Embodiment 3

[0043] 1. Preparation of iron tailings supported cobalt catalyst

[0044] The preparation method of the supported transition metal cobalt catalyst in this example is the same as in Example 1.

[0045] 2. Degradation of organic pollutants

[0046] Weigh 20mg of the supported transition metal cobalt catalyst prepared in step 1, add the prepared 20mg / L methylene blue solution to simulate organic wastewater (V=200mL), and add 100mg of oxidant permonomonosulfate (PMS) at the same time, at 25 ℃ under a constant temperature water bath for 2 hours, the degradation rate of organic pollutants reached 100%.

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Abstract

The invention discloses a preparation method of a supported transition metal catalyst utilizing iron tailings as a carrier and a method for degrading organic pollutants. The supported transition metal catalyst utilizing iron tailings as the carrier is prepared by the following steps: preparing a mixed solution by utilizing iron tailings and a transition metal m salt (Co, Mn or Cu) as raw materials, and preparing the supported transition metal catalyst utilizing iron tailings as the carrier through an impregnation method. A proper amount of oxidant hydrogen peroxymonosulfate (PMS) and the supported transition metal catalyst disclosed by the invention are added into an organic pollutant solution to carry out a catalytic degradation reaction of organic pollutants. The supported transition metal catalyst utilizing iron tailings as the carrier disclosed by the invention is good in catalytic degradation effect of organic pollutants and high in degradation rate, the method is simple, the cost is low and the target of treating pollutants through wastes is achieved.

Description

1. Technical field [0001] The invention relates to the technical field of preparation of inorganic catalysts, in particular to the preparation of transition metal catalysts loaded with iron tailings as a carrier and the method for degrading organic pollutants. Pollutants have good catalytic performance and good repeatability, suitable for Fenton-like reactions. 2. Background technology [0002] The development of the chemical industry is changing with each passing day, but most of the discharged wastewater is complex, high-concentration, and difficult-to-biodegrade substances, which have brought harm to the ecological environment and human health. The removal effect is not ideal. In recent decades, advanced oxidation technologies (Advanced Oxidation Technologies, AOTs) have attracted extensive attention from scholars at home and abroad because of their high efficiency in degrading organic pollutants. OH, OOH, etc.) degrade organic pollutants into small molecules, and final...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/889C02F1/72C02F1/58
Inventor 姚运金徐川冯乙巳卢芳
Owner HEFEI UNIV OF TECH
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