Preparation method of magnetic gel heavy metal adsorbent

A heavy metal and adsorbent technology, applied in the field of water pollution treatment, can solve the problems of high operating cost, high energy consumption, secondary pollution, etc., and achieve the effects of fewer types of raw materials, simple preparation method, and easy separation and purification

Inactive Publication Date: 2018-06-19
苏州纳贝通环境科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation method, ion exchange method, membrane separation method, etc. These meth

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  • Preparation method of magnetic gel heavy metal adsorbent

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[0023] Example 1

[0024] A preparation method of a magnetic gel heavy metal adsorbent, the specific steps of the preparation method are as follows:

[0025] (1) Fe 3 O 4 Preparation of magnetic nanoparticles

[0026] Preparation of Fe by microemulsion method 3 O 4 Magnetic nanoparticles, and dry the magnetic nanoparticles in an oven;

[0027] (2) Weigh 35mg of Fe prepared in step (1) 3 O 4 For magnetic nanoparticles, resuspend the magnetic nanoparticles with 15 mL of aqueous solution and place them on an ultrasonic instrument for ultrasonic dispersion for 15 minutes, and then add glutaraldehyde solution to it. The final concentration of the glutaraldehyde solution is 0.8M. Stir the nanoparticles evenly;

[0028] (3) Weigh 22 mg of sodium alginate and fully dissolve it with 15 mL of 15% acetic acid to obtain a sodium alginate solution. Add the sodium alginate solution to the magnetic nanoparticles in step (2) at a speed of 400r / min In the process, the temperature is slowly raised to 3...

Example Embodiment

[0031] Example 2

[0032] A preparation method of a magnetic gel heavy metal adsorbent, the specific steps of the preparation method are as follows:

[0033] (1) Fe 3 O 4 Preparation of magnetic nanoparticles

[0034] Preparation of Fe by microemulsion method 3 O 4 Magnetic nanoparticles, and dry the magnetic nanoparticles in an oven;

[0035] (2) Weigh 20mg of Fe prepared in step (1) 3 O 4 For magnetic nanoparticles, resuspend the magnetic nanoparticles with 10 mL of aqueous solution and place them on an ultrasonic instrument for ultrasonic dispersion for 10 minutes, and then add glutaraldehyde solution to it. The final concentration of the glutaraldehyde solution is 0.5M. Stir the nanoparticles evenly;

[0036] (3) Weigh 15 mg of sodium alginate and fully dissolve it with 10 mL of acetic acid with a volume concentration of 10% to obtain a sodium alginate solution. Add the sodium alginate solution to the magnetic nanoparticles in step (2) at a speed of 300 r / min In the process, slowl...

Example Embodiment

[0039] Example 3

[0040] A preparation method of a magnetic gel heavy metal adsorbent, the specific steps of the preparation method are as follows:

[0041] (1) Fe 3 O 4 Preparation of magnetic nanoparticles

[0042] Preparation of Fe by microemulsion method 3 O 4 Magnetic nanoparticles, and dry the magnetic nanoparticles in an oven;

[0043] (2) Weigh 50mg of Fe prepared in step (1) 3 O 4 For magnetic nanoparticles, resuspend the magnetic nanoparticles with 20mL of aqueous solution and place them on an ultrasonic instrument for ultrasonic dispersion for 20 minutes, then add glutaraldehyde solution to it. The final concentration of the glutaraldehyde solution is 1M. Stir the particles evenly;

[0044] (3) Weigh 30mg of sodium alginate and fully dissolve it with 20mL of 20% acetic acid to obtain a sodium alginate solution. Add the sodium alginate solution to the magnetic nanoparticles in step (2) at a speed of 500r / min In the process, the temperature was slowly raised to 40°C, the rea...

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Abstract

The invention discloses a preparation method of a magnetic gel heavy metal adsorbent. The preparation method specifically comprises the following steps: (1) preparing Fe3O4 magnetic nanoparticles; (2)preparing magnetic nanoparticles coated with sodium alginate; (3) resuspending the magnetic nanoparticles coated with sodium alginate prepared in the step (2) in an epichlorohydrin solution, causinghyaluronic acid to be completely dissolved in an aqueous solution, and adding hyaluronic acid into the magnetic nanoparticles coated with sodium alginate resuspended by the epichlorohydrin under a stirring state. The adsorbent prepared with the preparation method can adsorb Cu, Cr, Pb and Hg. The adsorbent has the advantages of simple preparation method, few raw material categories and environmentprotection, and a magnetic action is easy for separating and purifying the adsorbent. Therefore, the preparation method has a wide prospect for processing heavy metal aqueous solution.

Description

technical field [0001] The invention belongs to the technical field of water pollution treatment, and in particular relates to a preparation method of a magnetic gel heavy metal adsorbent. Background technique [0002] With the development of the global economy and society, environmental pollution is becoming more and more serious. Industrial wastewater, as the main source of environmental pollution, has been a major problem that has plagued countries all over the world for a long time. Heavy metal ions in industrial wastewater have strong carcinogenic, teratogenic, and mutagenic effects, which pose a serious threat to human health and the ecological environment. Therefore, it is very important to strictly control the pollution of heavy metal wastewater. [0003] Traditional heavy metal wastewater treatment methods mainly include chemical precipitation, ion exchange, membrane separation, etc. These methods usually have problems such as large investment, high energy consumpti...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/06B01J20/22B01J20/24B01J20/28009B01J20/28047C02F1/281C02F1/285C02F1/286C02F1/288C02F2101/20
Inventor 潘明华
Owner 苏州纳贝通环境科技有限公司
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