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Magnetic composite adsorbent and preparation method thereof

A composite adsorption and magnetic technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as difficulty in recycling, loss of powder materials, etc. Effect

Active Publication Date: 2020-11-06
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although biochar adsorbents have certain advantages, there are also problems of powder material loss and difficulty in recycling

Method used

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  • Magnetic composite adsorbent and preparation method thereof
  • Magnetic composite adsorbent and preparation method thereof
  • Magnetic composite adsorbent and preparation method thereof

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Embodiment 1

[0033] A kind of magnetic composite adsorbent of the present invention, this magnetic composite adsorbent comprises porous magnesium hydroxide, Fe 3 o 4 Nanoparticles and biochar made from betel nut slag, the magnetic composite adsorbent is supported by porous magnesium hydroxide loaded with biochar and Fe 3 o 4 Nanoparticles.

[0034] A kind of preparation method of the magnetic composite adsorbent of above-mentioned present embodiment, comprises the following steps:

[0035] (1) Preparation of biochar: dry the collected betel nut slag and crush it with a pulverizer for 30 seconds; place the pulverized betel nut slag in a 2 The pyrolysis is carried out under protection, the heating rate of the pyrolysis is 15°C / min, the final temperature is 450°C, and the maintenance time is 1h. Grinding after cooling to obtain biochar. After testing, the specific surface area of ​​biochar is 6.3682±0.1298m 2 / g.

[0036](2) Preparation of magnesium hydroxide carrier: in the microemuls...

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Abstract

The invention discloses a magnetic composite adsorbent and a preparation method thereof. The magnetic composite adsorbent comprises porous magnesium hydroxide, Fe3O4 nanoparticles and charcoal made from areca dregs, and the porous magnesium hydroxide is loaded with the charcoal and the Fe3O4 nanoparticles. The preparation method comprises the following steps: preparing the charcoal with the areca dregs, preparing the porous magnesium hydroxide carrier in a micro-emulsion system, loading the charcoal on the magnesium hydroxide carrier, and preparing the magnetic composite adsorbent by using a coprecipitation technology. The preparation method has the advantages of simple process and low cost, and the prepared magnetic composite adsorbent has the advantages of large adsorption capacity to heavy metals and organic pollutants, fast adsorption speed, and easiness in separation.

Description

technical field [0001] The invention belongs to the field of environmental functional materials, and in particular relates to a magnetic composite adsorbent and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the wastewater discharged by various industries has far exceeded the carrying capacity of the environment, resulting in serious pollution. Wastewater containing heavy metals and various organic pollutants from industries such as mining and metallurgy, electroplating, dyeing (coating) materials, leather, pesticides, and pharmaceuticals has caused serious harm to the environmental ecosystem due to its high toxicity and persistence. , and threaten people's lives. Therefore, how to remove pollutants in wastewater is particularly important in the process of water pollution control and water environment restoration. [0003] The adsorption method has attracted much attention because of its advantages of simple operation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/041B01J20/06B01J20/20B01J20/28009B01J2220/4806B01J2220/4825C02F1/281C02F2101/20C02F2101/30C02F2101/345
Inventor 陈安伟尚翠邵继海林毅青罗斯彭亮铁柏清
Owner HUNAN AGRICULTURAL UNIV
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