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Preparation method of magnetic polystyrene-based bentonite composite adsorbent

A polystyrene-based, composite adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problem that water quality cannot be effectively guaranteed, and sewage impurities and chemical components cannot be effectively purified and other problems, to achieve the effect of enhancing mechanical strength and magnetic recovery capacity, good recycling performance, and rapid adsorption

Inactive Publication Date: 2018-12-28
庞博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing sewage treatment agents cannot effectively purify the impurities and chemical components in the sewage, and the purified water quality cannot be effectively guaranteed

Method used

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  • Preparation method of magnetic polystyrene-based bentonite composite adsorbent

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Effect test

Embodiment 1

[0016] A preparation method of magnetic polystyrene-based bentonite composite adsorbent, the method specifically comprises the following steps:

[0017] Step (1): Add Ag hydroxycalcium phosphate and 5g sodium dodecylbenzenesulfonate as a dispersant into deionized water, add 1mL hydrogen peroxide as an initiator, and add styrene monomer under stirring conditions, Styrene monomer is suspended in water in the form of droplets, and polymerized according to the free radical reaction process; then add 0.03g / L potassium persulfate aqueous solution, heat up to 80°C, stir for 30 hours, and then centrifuge to retain the solid The substance was washed with water, sonicated, and dried to obtain a white solid, namely polystyrene microspheres;

[0018] Step (2): Disperse the polystyrene microspheres prepared in step (1) into deionized water, and 2 Add 2g Fe (NO 3 ) 3 and 2g Fe (NO 3 ) 2 , continuously stirred for 4 hours, added ammonia water, and continued to stir for 5 hours to obtain...

Embodiment 2

[0025] A preparation method of magnetic polystyrene-based bentonite composite adsorbent, the method specifically comprises the following steps:

[0026] Step (1): Add 5g of calcium hydroxyphosphate and 5g of sodium dodecylbenzenesulfonate as dispersants into deionized water, add 1mL of hydrogen peroxide as an initiator, and add styrene monomer under stirring conditions, Styrene monomer is suspended in water in the form of droplets, and polymerized according to the free radical reaction process; then add 0.03g / L potassium persulfate aqueous solution, heat up to 80°C, stir for 30 hours, and then centrifuge to retain the solid The substance was washed with water, sonicated, and dried to obtain a white solid, namely polystyrene microspheres;

[0027] Step (2): Disperse the polystyrene microspheres prepared in step (1) into deionized water, and 2 Add 2g Fe (NO 3 ) 3 and 2g Fe (NO 3 ) 2 , continuously stirred for 4 hours, added ammonia water, and continued to stir for 5 hours t...

Embodiment 3

[0034] A preparation method of magnetic polystyrene-based bentonite composite adsorbent, the method specifically comprises the following steps:

[0035] Step (1): Add 5g of calcium hydroxyphosphate and 5g of sodium dodecylbenzenesulfonate as dispersants into deionized water, add 1mL of hydrogen peroxide as an initiator, and add styrene monomer under stirring conditions, Styrene monomer is suspended in water in the form of droplets, and polymerized according to the free radical reaction process; then add 0.03g / L potassium persulfate aqueous solution, heat up to 80°C, stir for 30 hours, and then centrifuge to retain the solid The substance was washed with water, sonicated, and dried to obtain a white solid, namely polystyrene microspheres;

[0036] Step (2): Disperse the polystyrene microspheres prepared in step (1) into deionized water, and 2 Add 2g Fe (NO 3 ) 3 and 2g Fe (NO 3 ) 2 , continuously stirred for 4 hours, added ammonia water, and continued to stir for 5 hours t...

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Abstract

A preparation method of a magnetic polystyrene-based bentonite composite adsorbent comprises the following steps: step (1), hydroxyl calcium phosphate and sodium dodecylbenzenesulphonate are added towater, an initiator is added, the substances are stirred, and a styrene monomer is added; an aqueous persulfate solution is added, the mixed solution is heated to 80 DEG C and stirred for a reaction for 30 h, then centrifugal separation is performed, solid substances are reserved, washed with water, processed by ultrasound and dried, and white solids are obtained and are polystyrene microspheres;(2) the polystyrene microspheres prepared in step (1) are dispersed in deionized water, Fe(NO3)3 and Fe(NO3)2 are added under N2 protection, stirring is performed, ammonium hydroxide is added, stirring is continued, and magnetic polystyrene microspheres are obtained; (3) bentonite is added to deionized water, the magnetic polystyrene microspheres prepared in step (2) are added dropwise to the aqueous bentonite solution and stirred, glutaraldehyde is added for crosslinking reaction, then separation and washing are performed, and bentonite composited with magnetic polystyrene is obtained.

Description

technical field [0001] The present application relates to a method for preparing an adsorbent, in particular to a method for preparing a magnetic polystyrene-based bentonite composite adsorbent. Background technique [0002] With the improvement of industrialization and urbanization, the discharge of a large amount of industrial sewage and domestic sewage has polluted the water body and destroyed the ecology. If it is discharged into the ground water without treatment, it will pollute the rivers and lakes, which will seriously harm Industrial and agricultural production and human health. However, the existing sewage treatment agents cannot effectively purify the impurities and chemical components in the sewage, and the purified water quality cannot be effectively guaranteed. [0003] The invention prepares a magnetic polystyrene-based bentonite composite adsorbent, which can be used in a relatively large pH range and can effectively remove copper ions in water. Contents o...

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
CPCB01J20/261B01J20/12B01J20/28009C02F1/288C02F2101/20
Inventor 庞博
Owner 庞博
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