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A porous magnetic spherical material with sewage purification function and preparation method thereof

A spherical and magnetic technology, used in chemical instruments and methods, water/sewage treatment, and restoration of polluted soil, etc., can solve the problems of complex pollutant composition and difficulty in removing polluted soil pollutants, and achieve excellent heavy metal pollutants. , the recycling process is simplified, the method is simple and convenient

Active Publication Date: 2018-11-09
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many sources of sewage in my country, and the composition of pollutants in sewage is complex, usually containing both organic pollutants and heavy metal pollutants. At present, traditional treatment processes and raw materials still face great difficulties in removing organic pollutants and heavy metal pollutants at the same time, especially Removing pollutants from polluted soil is more difficult

Method used

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  • A porous magnetic spherical material with sewage purification function and preparation method thereof
  • A porous magnetic spherical material with sewage purification function and preparation method thereof

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preparation example Construction

[0031] The preparation method of the porous magnetic spherical material described above comprises the following steps:

[0032] 1) Preparation of nanocomposite magnetic particles: Nano-Fe 3 o 4 The magnetic particles are dispersed in the isopropanol solution of tetrabutyl titanate, and the nano-sized TiO is obtained by magnetic separation after static reaction for 2-72 hours. 2 Nano Fe 3 o 4 nanocomposite magnetic particles;

[0033] 2) Preparation of porous magnetic spherical materials: uniformly disperse the nanocomposite magnetic particles obtained in the previous step in chitosan acetic acid solution, ultrasonically disperse, and drop the dispersed mixture into CuSO 4 Solidify in the solution, filter to get the filter residue;

[0034] After drying the filter residue, disperse it in glutaraldehyde aqueous solution, treat it at 70-90°C for 3-6 hours, filter the filter residue, remove excess copper ions in the filter residue, wash it, and then disperse it in water, and ...

Embodiment 1

[0053] A method for preparing a porous magnetic spherical material with sewage purification function, comprising the following steps:

[0054] 1) Preparation of magnetic nanoparticles: FeCl 2 , FeCl 3 , ammonia, polyvinyl alcohol, and water are added to the hydrothermal reaction kettle at a weight ratio of 1:1.2:0.3:0.1:10. After fully dissolving, seal and lock the hydrothermal reaction kettle and put it in a 180°C oven for static hydrothermal reaction. 5 hours, after cooling, take it out and wash it with magnetic separation to obtain nano-Fe 3 o 4 Magnetic particles; obtained Fe 3 o 4 The size is 50-500nm, and the saturation magnetization is 55-75emu / g.

[0055] 2) Preparation of nanocomposite magnetic particles: TiO 2 coated magnetic Fe 3 o 4 The preparation method of magnetic particle is, with 0.3g nanometer Fe 3 o 4 The magnetic particles are dispersed in tetrabutyl titanate isopropanol solution with a mass concentration of 0.1% w / w, and the nano-sized TiO is obt...

Embodiment 2

[0061] A method for preparing a porous magnetic spherical material with sewage purification function, comprising the following steps:

[0062] 1) Preparation of magnetic nanoparticles: FeCl 2 , FeCl 3 , ammonia, polyvinyl alcohol, and water are added to the hydrothermal reaction kettle at a weight ratio of 1:1.2:0.3:0.1:10. After fully dissolving, seal and lock the hydrothermal reaction kettle and put it in a 180°C oven for static hydrothermal reaction. 5 hours, after cooling, take it out and wash it with magnetic separation to obtain nano-Fe 3 o 4 Magnetic particles; obtained Fe 3 o 4 The size is 50-500nm, and the saturation magnetization is 55-75emu / g.

[0063] 2) Preparation of nanocomposite magnetic particles: TiO 2 coated magnetic Fe 3 o 4 The preparation method of the magnetic particles is, the nano-Fe 3 o 4 The magnetic particles are dispersed in tetrabutyl titanate isopropanol solution with a mass concentration of 5% w / w, and after static reaction for 8 hours...

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Abstract

The invention discloses a porous magnetic spherical material with the function of purifying sewage and polluted soil and a preparation method thereof. The material can be used for papermaking wastewater, textile wastewater, printing and dyeing wastewater, electroplating wastewater, rubber industry wastewater and domestic wastewater, etc., and is used by the Removal of pollutants in soil polluted by similar sewage, wastewater containing organic pollutants or heavy metal pollutants or both organic pollutants and heavy metal pollutants, and polluted soil. The invention adopts the nanotechnology to compound the nano functional material and the natural macromolecular material, and completes the preparation of the multifunctional magnetic porous spherical material through metal particle imprinting and chemical crosslinking reaction. It can degrade organic pollutants and heavy metal pollutants in wastewater and polluted soil respectively, and can be recycled by magnetic separation and regenerated for reuse. Spherical materials of different scales can be obtained by adjusting the preparation process, enabling the design of wastewater and polluted soil treatment processes More flexible and efficient.

Description

technical field [0001] The invention relates to a porous magnetic spherical material with the function of purifying sewage and polluted soil and a preparation method thereof, belonging to the technical field of functional materials. The porous magnetic spherical material provided by the invention can be widely used in the removal of organic pollutants and heavy metal pollutants in waste water and polluted soil. Background technique [0002] Water pollution and soil pollution are huge environmental pollution problems that accompany my country's rapid economic development and population growth. At present, my country's annual sewage discharge is nearly 100 billion tons. Due to the difficulty of sewage treatment technology to meet the sewage discharge needs, after decades of accumulation, a large number of major water sources across the country have been seriously polluted, and a large number of soils have also been seriously polluted by sewage. There are two main sources of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28B09C1/08
CPCB01J20/24B01J20/28009B01J20/28054B09C1/08C02F1/286
Inventor 石光张崧王玉海
Owner SOUTH CHINA NORMAL UNIVERSITY
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