A particle-reinforced iron-based composite material, ball milling preparation method and application thereof

A technology of iron-based composite materials and composite materials, which is applied in the field of particle-reinforced iron-based composite materials and ball mill preparation. It can solve the problems of difficult repeated use of ball mill materials and in-situ repairs that are difficult to apply on a large scale, and achieve efficient and stable treatment effects. The effect of high reuse rate and wide range of pH adaptability

Active Publication Date: 2016-11-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ball-milled materials are difficult to reuse, and this technology is more difficult to be applied on a large scale to the in-situ remediation of environmental media (such as river water and groundwater bodies) contaminated by organic matter.

Method used

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  • A particle-reinforced iron-based composite material, ball milling preparation method and application thereof
  • A particle-reinforced iron-based composite material, ball milling preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of SiO with quartz sand as particle reinforcement 2 Reductive Degradation of 2-Chlorophenol Wastewater by -Fe Composite

[0030] (1) According to the mass ratio of iron powder: quartz sand=9:1, weigh 5g of iron powder and quartz sand, and mix them evenly;

[0031] (2) Add the above mixed powder into a 100 mL stainless steel ball mill tank, add 0.3 mL ethanol as a process control agent, and the ball mill medium is stainless steel balls, including 16 large balls (Φ10 mm) and 100 small balls (Φ6 mm) , the ball-milling ratio is 31.2:1, the speed of the planetary ball mill is 550 rpm, and the ball milling is 2 h;

[0032] (3) After ball milling, cool down for 30 minutes until the temperature of the ball mill drops to room temperature, open the ball mill tank to let air in, slowly oxidize the material in the tank for 30 min, and then take out the SiO 2 -Fe composite material;

[0033] (4) SiO obtained above 2 -Fe composite materials were added to 2-ch...

Embodiment 2

[0034] Example 2: Preparation of B with boron carbide as particle reinforcement 4 Reductive Degradation of 2-Chlorophenol Wastewater by C-Fe Composite

[0035] Preparation of B using boron carbide as precursor 4 C-Fe composite material, other conditions are the same as embodiment 1, the difference is that by mass ratio iron powder: boron carbide=9:1, join in the ball mill jar, prepare B 4 C-Fe composites. The dechlorination rate of 2-chlorophenol was 99.1% in 120 min.

Embodiment 3

[0036] Example 3: Preparation of SiC-Fe Composite Material Reductive Degradation of 2-Chlorophenol Wastewater Using Silicon Carbide as Particle Reinforcement

[0037] The SiC-Fe composite material was prepared with boron carbide as the precursor, and the other conditions were the same as in Example 1, except that the mass ratio of iron powder: silicon carbide=9:1 was added to the ball mill tank to prepare the SiC-Fe composite material. The dechlorination rate of 2-chlorophenol was 98.7% in 120 min.

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Abstract

The invention discloses a particle-reinforced iron-based composite material, a ball milling preparation method and an application thereof. The iron-based composite material uses monometallic iron as a parent matrix, and uniformly intersperses particle reinforcements with relatively high hardness in the iron matrix through a ball milling process. The particle reinforcement can be used as an abrasive in the ball milling process to accelerate the ball milling process, and due to the uniform dispersion of the particle reinforcement in the iron phase, many highly reactive areas are formed between the particle reinforcement and the iron interface, which is conducive to adsorption. Organic matter in this area is reductively degraded. The particulate reinforcement includes at least one of quartz sand, alumina, boron carbide and silicon carbide. The preparation method is simple and easy, and the materials used are cheap and easy to obtain. The particle-reinforced iron-based composite material provided by the invention can also efficiently reduce and degrade halogenated and nitro organic pollutants in waste water, has efficient and stable treatment effect, wide pH adaptability range, and high material reutilization rate.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a particle-reinforced iron-based composite material, a ball milling preparation method and its application. The particle-reinforced iron-based composite material can be used to repair organic pollution by halogenated substances and / or nitrobenzenes, etc. Soil, water and other environmental media polluted by pollutants. Background technique [0002] Organic halogenated compounds and nitrobenzene are often widely used in organic synthesis as raw materials, intermediates, solvents, etc., and they play an irreplaceable role in human life and production. However, many organic halogenated substances have strong retention, refractory degradation and high toxicity. Even a long-term intake of trace amounts of halogenated organic substances will cause different degrees of harm to animals and humans. In addition, nitrobenzene pollutants also have greater reproductive t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/00C22C33/02C02F1/70C02F101/34C02F101/36C02F101/38
Inventor 马鲁铭张云飞樊金红刘钰马捷汀
Owner TONGJI UNIV
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