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Magnetic hydrogel glass bead composite adsorbent material as well as preparation method and application thereof

A hydrogel glass, composite adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of low removal rate of heavy metal ions, high cost and difficult recovery, and achieve recovery and repetition The effect of utilization, improving adsorption rate and adsorption strength, and improving utilization rate

Inactive Publication Date: 2021-03-26
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic hydrogel glass bead composite adsorbent material and its preparation method and application to solve the problems of low removal rate of heavy metal ions, high cost and difficult recovery of sewage treatment agents in the prior art.

Method used

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  • Magnetic hydrogel glass bead composite adsorbent material as well as preparation method and application thereof
  • Magnetic hydrogel glass bead composite adsorbent material as well as preparation method and application thereof
  • Magnetic hydrogel glass bead composite adsorbent material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of magnetic nylon microspheres: 20 g of polystyrene particles and 80 g of caprolactam were added into a 250 mL three-necked flask, and fully mixed and stirred at 80° C. for 12 h. Then 2.0 g of ferric oxide and 0.8 g of sodium hydroxide were added thereto, and the temperature was raised to 150° C. under vacuum. In order to accelerate the polymerization rate of caprolactam, 1 mL of activator toluene diisocyanate (TDI) was added to the above melt, and the melt was poured into a template at 160° C. for 20 min for polymerization. Finally, the obtained composite material was etched in tetrahydrofuran for 2 h and fully dried to obtain magnetic nylon microspheres (FP).

[0033] (2) Add 4.0g of chitosan powder to 90mL of distilled water, and add 2mL of glacial acetic acid to it, and mechanically stir for 1h to obtain chitosan hydrogel; add 2.0g of PVA powder to 50mL of distilled water and heat to 70°C And continue to stir for 15min to obtain PVA aqueous solution...

Embodiment 2

[0054] (1) Preparation of magnetic nylon microspheres: 15 g of polystyrene particles and 85 g of caprolactam were added into a 250 mL three-neck flask, and fully mixed and stirred at 60° C. for 12 h. Then 2.0 g of ferric oxide and 0.8 g of potassium hydroxide were added thereto, and the temperature was raised to 170° C. under vacuum. In order to accelerate the polymerization rate of caprolactam, 1 mL of activator toluene diisocyanate (TDI) was added to the above melt, and the melt was poured into a template at 170° C. for 35 min to polymerize. Finally, the obtained composite material was etched in tetrahydrofuran for 2 h and fully dried to obtain magnetic nylon microspheres (FP).

[0055] (2) Add 4.0g of chitosan powder to 90mL of distilled water, and add 2mL of glacial acetic acid to it, and mechanically stir for 1h to obtain chitosan hydrogel; add 1.0g of PVA powder to 35mL of distilled water and heat to 70°C And continue to stir for 15min to obtain PVA aqueous solution. 5...

Embodiment 3

[0057] (1) Preparation of magnetic nylon microspheres: 23 g of polystyrene particles and 77 g of caprolactam were added into a 250 mL three-neck flask, and fully mixed and stirred at 100° C. for 12 h. Then 2.0 g of ferric oxide and 0.8 g of sodium hydroxide were added thereto, and the temperature was raised to 130° C. under a nitrogen atmosphere. In order to speed up the polymerization rate of caprolactam, we added 1 mL of activator toluene diisocyanate (TDI) to the above melt, and poured the melt into a template at 150°C for 10 min of polymerization. Finally, the obtained composite material was etched in tetrahydrofuran for 2 h and fully dried to obtain magnetic nylon microspheres (FP).

[0058] (2) Add 4.0g of chitosan powder into 90mL of distilled water, and add 2mL of glacial acetic acid to it, and mechanically stir for 1h to obtain chitosan hydrogel; add 3.0g of PVA powder into 65mL of distilled water and heat to 70°C And continue to stir for 15min to obtain PVA aqueous ...

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Abstract

The invention discloses a magnetic hydrogel glass bead composite adsorbent material as well as a preparation method and application thereof. The preparation method comprises the following steps of: (1) uniformly stirring and mixing polystyrene and caprolactam, adding ferroferric oxide and an initiator, heating to obtain a mixed molten liquid, adding an activating agent for reaction to obtain a composite material, and etching and drying the composite material to obtain magnetic nylon microspheres; and (2) preparing PVA / CTS composite hydrogel, then adding the magnetic nylon microspheres and a nano chitin solution, uniformly stirring and mixing to obtain a composite colloid, and dropwise adding the composite colloid into a sodium hydroxide aqueous solution to obtain FPCC. The prepared FPCC has a very good adsorption effect on heavy metal ions, can be widely applied to sewage purification, is low in preparation cost, simple in preparation operation, capable of achieving large-scale industrial production, free of secondary pollution to the environment and easy to recycle, and is a very potential heavy metal ion adsorption material.

Description

technical field [0001] The invention belongs to the field of water treatment agent and its preparation, in particular to a magnetic hydrogel glass bead composite adsorbent material and its preparation method and application. Background technique [0002] In recent years, due to the indiscriminate treatment of industrial pollution sources (such as heavy metal ions, toxic organic substances), severe water pollution has been caused, posing a huge threat to human health. Among these pollution sources, high concentrations of heavy metal ions (such as copper ions, lead ions) in polluted water may cause health problems to our body, including kidney, brain, liver and bladder damage, intestinal diseases, Alzheimer Haimer's disease and Parkinson's disease. Therefore, it is necessary to find a method to effectively remove heavy metal ions from polluted water sources. At present, there are many methods for water pollution treatment, including chemical method, ion exchange method, memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/265B01J20/24B01J20/28009B01J20/28047B01J20/28016C02F1/286C02F1/285C02F1/281C02F1/288C02F2101/20
Inventor 杨桂生吴建明姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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