Preparation method of amino-containing magnetic microspheres

Inactive Publication Date: 2017-02-08
SHAANXI SHENGMAI PETROLEUM
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  • Abstract
  • Description
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Problems solved by technology

However, due to the shortcomings of these adsorbents, such as high regeneration cost, low flow rate, and difficulty in separation and reuse from wastewater, the application process is subject to certain restrictions, while magnetic materials can use the separation effect of an external magnetic field to solve the problem of separation difficulties.

Method used

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Embodiment Construction

[0015] The preparation method of amino-containing magnetic microspheres comprises the following steps:

[0016] (1) Preparation of ferrofluid

[0017] Press n (Fe 3+ ): n (Fe 2＋ )=2:1, the FeCl 3 and FeCl 2 Add 100mL of distilled water and stir vigorously. After it is completely dissolved, put it into a three-necked flask equipped with a thermometer and a condenser tube, and simultaneously pass N 2 ;Keep the temperature at 60°C, slowly add NaOH dropwise until the pH value = 9, stir at a constant temperature at 55°C for 20min, then dropwise add NaOH dissolved in 30mL H 2 O with 0.5g SDS and 1g PEG, stirring at constant temperature for 1h; use a magnet to separate Fe 3 o 4 , washed with deionized water for several times until the pH value of the solution = 7, to obtain a magnetic fluid;

[0018] (2) Preparation of magnetic microspheres

[0019] Add 3g of polyethylene glycol 6000 and 100mL of deionized water to a 250mL three-necked bottle, and dissolve it completely at a ...

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Abstract

The invention relates to the technical field of function materials, in particular to a preparation method of amino-containing magnetic microspheres. The preparation method of amino-containing magnetic microspheres comprises the following steps of (1) magnetofluid preparation; (2) magnetic microsphere preparation; (3) surface amino-containing magnetic microsphere preparation. The glycidyl methacrylate is used as a functional monomer; ethanediamine is used for modification; the amino functional magnetic polymer microspheres are prepared; the protonated amino groups have strong combination effects with acid orange 7 molecules through the electrostatic adsorption effects; in addition, magnetic adsorbents can be easily separated through external magnetic fields; therefore the problem of separation difficulty of a method through centrifugation or filtration and the like can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a preparation method of amino-containing magnetic microspheres. Background technique [0002] With the rapid development of the printing and dyeing industry, a large amount of dye wastewater has become one of the key pollution sources of the water environment. Dye wastewater has become an important source of pollution due to its complex composition, deep color, large discharge, and most of the dyes and their metabolic intermediates have mutagenicity, carcinogenicity and other toxicity, and are seriously harmful to the environment and organisms. In recent years, the treatment of dye wastewater has been paid more and more attention by scholars. The common removal methods include flocculation, biodegradation, electrochemical method, adsorption method, etc. Among them, the adsorption method is easy to handle, low cost and high efficiency. It is widely used in the treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/265B01J20/06B01J20/28009B01J20/28019
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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