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Preparation and application of floatable magnetic hollow material for removing heavy metal in water and soil

A heavy metal and soil technology, applied in the fields of nanomaterials and environmental protection, can solve the problem of inability to remove heavy metals from the source, and achieve the effects of safe and non-toxic degradation products, low production cost, and efficient adsorption and reduction of heavy metals

Active Publication Date: 2017-11-28
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a floating magnetic hollow material for removing heavy metals from water bodies and soils, which can be applied to heavy metal-polluted In the water body or soil, after sufficient mixing and adsorption, the material of the present invention will absorb the heavy metals in the water body or soil on the surface and inside of the material, the material of the present invention can float on the water surface, and use its magnetic and floating properties to use the screen to recover Treatment to remove heavy metals from water or soil

Method used

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  • Preparation and application of floatable magnetic hollow material for removing heavy metal in water and soil
  • Preparation and application of floatable magnetic hollow material for removing heavy metal in water and soil
  • Preparation and application of floatable magnetic hollow material for removing heavy metal in water and soil

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation and application of a floatable magnetic hollow material for heavy metal removal in water and soil

[0048] a. Dissolve 1g of sodium alginate in 100mL of water at 25°C (room temperature), and stir until clear and transparent;

[0049] b. Add dried and pulverized dried banana leaves with a mass percentage concentration of 0.5% and kaolin with a mass percentage concentration of 5%, and stir thoroughly to obtain a mixed system;

[0050] c. Pour the mixed system into the mould, and carry out freeze molding treatment for 4 hours;

[0051] d. Pour the hardened cube in the above step c into a 1% ferric chloride solution and soak for 20 hours;

[0052] e. Pick up the cube soaked in the ferric chloride solution, dry it slightly, put it into a pottery crucible, and carbonize it in a muffle furnace at 250°C for 150 minutes;

[0053] f. After carbonization, a floatable magnetic hollow material for removing heavy metals in water and soil can be obtained, and sealed for ...

Embodiment 2

[0060] Preparation and application of a floatable magnetic hollow material for heavy metal removal in water and soil

[0061] a. Dissolve 2g of potassium alginate in 100mL of water at 25°C (room temperature), and stir until clear and transparent;

[0062] b. Add dried and pulverized chaff with a concentration of 0.8% by mass and kaolin with a concentration of 5% by mass, and fully stir to obtain a mixed system;

[0063] c. Pour the mixed system into the mould, and carry out freeze molding treatment for 6 hours;

[0064] d. Pour the hardened cube in the above step c into a 4% iron sulfate solution by mass and soak for 12 hours;

[0065] e. Pick up the cube soaked in the ferric persulfate solution, dry it slightly, put it into a pottery crucible, and carbonize it in a muffle furnace at 350°C for 90 minutes;

[0066] f. After carbonization, a floatable magnetic hollow material for removing heavy metals in water and soil can be obtained, and sealed for storage.

[0067] Applica...

Embodiment 3

[0073] Preparation and application of a floatable magnetic hollow material for heavy metal removal in water and soil

[0074] a. Dissolve 2g of sodium alginate in 100mL of water at 25°C (room temperature), stir well until clear and transparent;

[0075] b. Add dried and pulverized corn leaves with a concentration of 0.8% by mass and kaolin with a concentration of 5% by mass, and fully stir to obtain a mixed system;

[0076] c. Pour the mixed system into the mould, and carry out freeze molding treatment for 8 hours;

[0077] d. Pour the hardened cube in the above step c into a 4% iron sulfite solution by mass and soak for 12 hours;

[0078] e. Pick up the cube soaked in the ferric sulfite solution, dry it slightly, put it into a pottery crucible, and carbonize it in a muffle furnace at 350°C for 90 minutes;

[0079] f. After carbonization, a floatable magnetic hollow material for removing heavy metals in water and soil can be obtained, and sealed for storage.

[0080] Applic...

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Abstract

The invention discloses preparation and application of a floatable magnetic hollow material for removing heavy metal in water and soil. Agricultural wastes of musaceae, such as banana, dried-up leaves, corn dried-up leaves and rice husks are combined with alginate to prepare the floatable magnetic hollow material containing nanometer ferroferric oxide and nanometer ferrous chloride, and the floatable magnetic hollow material is applied to remove the heavy metal in the water and the soil, so that not only is the resource utilization of the agricultural wastes developed, and a new way is opened for farmer income increase, but also the prepared nanometer ferrous chloride and nanometer ferroferric oxide and a high-quality porous biological carbon material have a high-efficient heavy metal adsorption capability, the hollow material with magnetism and floated on a water surface can be conveniently recovered, and the heavy metal in the water and the soil is removed. The floatable magnetic hollow material provided by the invention is wide in application range, can be used for renovating the water with heavy metal pollution such as urban or industrial sewage, rivers, pools and lakes, and can be also used for renovating the soil with heavy metal pollution such as rice fields, water vegetable fields and green plant fields.

Description

technical field [0001] The invention relates to a preparation method and application of a floatable magnetic hollow material used for removing heavy metals in water bodies and soils, in particular to a preparation method of nanometer metal materials and high-efficiency biochar adsorbents, and is applied to heavy metals in water bodies and soils The removal treatment belongs to the field of nanomaterials and environmental protection technology. Background technique [0002] In recent years, incidents of heavy metal pollution of rivers, lakes, and cultivated land have occurred frequently in my country, seriously endangering the ecological environment and causing severe crop yield reduction. At the same time, grains with excessive heavy metal content entering the market are a serious threat to people's health! Due to the development of modern industry, the burning of coal and mineral oil and the stacking of a large number of waste electronic products have caused a large amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28B09C1/00C02F101/20
CPCB01J20/0288B01J20/06B01J20/12B01J20/20B01J20/28009B01J20/28014B01J2220/4825B09C1/00C02F1/288C02F2101/20C02F2101/22
Inventor 蒋刚彪陈文照刘永林梁均华曹飘杨马丹婷
Owner SOUTH CHINA AGRI UNIV
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