Composite hydrogel material for adsorbing heavy metals and preparation method of composite hydrogel material

A technology for composite hydrogel and heavy metal adsorption, which can be used in alkali metal compounds, adsorption water/sewage treatment, chemical instruments and methods, etc., and can solve the problems of insufficient mixing, low tableting efficiency, and unsatisfactory heavy metal adsorption effect. , to achieve the effect of prolonging service life, enhancing mechanical properties and large adsorption capacity

Inactive Publication Date: 2020-10-02
杭州凯博特环保科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The patent document (CN201910153992.4) discloses a composite hydrogel material and its preparation method. The polyvinyl alcohol / chitosan / sodium hyaluronate composite hydrogel material prepared by this method has a good pore structure, very good Excellent mechanical strength and toughness, good biocompatibility, and active antibacterial properties, but the composite hydrogel material is not ideal for the adsorption of heavy metals
At the same time, in the preparation process of the existing hydrogel materials, the raw materials are often processed by ultrasonic mixing. Compared with the existing physical mixing method, the mixing effect is better, but there are also cases of insufficient mixing, and the product needs to be pressed after filtration. Tablet processing, the existing tabletting efficiency is not high

Method used

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  • Composite hydrogel material for adsorbing heavy metals and preparation method of composite hydrogel material
  • Composite hydrogel material for adsorbing heavy metals and preparation method of composite hydrogel material
  • Composite hydrogel material for adsorbing heavy metals and preparation method of composite hydrogel material

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Embodiment 1

[0032] A composite hydrogel material for absorbing heavy metals, prepared from the following raw materials in parts by weight: 30 parts of methacrylic acid, 20 parts of polyethylene glycol, 10 parts of sepiolite, 5 parts of polyvinyl alcohol, humic acid 3 parts, 0.4 parts of ammonium persulfate, 0.05 parts of aluminum sulfate, 0.05 parts of N, N-methylenebisacrylamide;

[0033] Wherein, the composite hydrogel material for adsorbing heavy metals is prepared through the following steps:

[0034] Step 1: Put sepiolite and humic acid in water and disperse them ultrasonically to form a suspension;

[0035] Step 2: Add methacrylic acid, polyethylene glycol, polyvinyl alcohol, ammonium persulfate, aluminum sulfate and N,N-methylene acrylamide to the suspension in step 1, and perform ultrasonic stirring and mixing under heating conditions. Obtain a primary product that is uniformly mixed and contains humic acid and sepiolite;

[0036] Step 3: Pour the primary product obtained in ste...

Embodiment 2

[0040] A composite hydrogel material for absorbing heavy metals, prepared from the following raw materials in parts by weight: 50 parts of methacrylic acid, 30 parts of polyethylene glycol, 15 parts of sepiolite, 7 parts of polyvinyl alcohol, humic acid 5 parts, 0.6 parts of ammonium persulfate, 0.10 parts of aluminum sulfate, 0.10 parts of N, N-methylenebisacrylamide;

[0041] Wherein, the composite hydrogel material for adsorbing heavy metals is prepared through the following steps:

[0042] Step 1: Put sepiolite and humic acid in water and disperse them ultrasonically to form a suspension;

[0043] Step 2: Add methacrylic acid, polyethylene glycol, polyvinyl alcohol, ammonium persulfate, aluminum sulfate and N,N-methylene acrylamide to the suspension in step 1, and perform ultrasonic stirring and mixing under heating conditions. Obtain a uniformly mixed primary product containing humic acid and sepiolite; in step 2, the heating temperature of ultrasonic stirring and mixing...

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Abstract

The invention discloses a composite hydrogel material for adsorbing heavy metals and a preparation method of the composite hydrogel material. A conveying channel is designed to be wide in the upper portion and narrow in the lower portion. Meanwhile, a first stirring blade, a second stirring blade and a third stirring blade with different sizes are matched, so a primary product is subjected to physical mixing treatment again after ultrasonic mixing; the narrowing design of the conveying channel ensures that the primary product can be in full contact with the stirring blades with different sizes; two layers of filter plates are designed to ensure that impurities in a primary product are filtered; an automatic drawing filter plate is designed, the filter plate can be conveniently cleaned, thecomposite hydrogel material can be rapidly obtained through ethanol spraying and tabletting pressing after the primary product is filtered, the tabletting efficiency of the primary product is effectively improved through the double tabletting design, the composite hydrogel material is cut while tabletting is performed, and the practicality is high.

Description

technical field [0001] The invention relates to the technical field of preparation of hydrogel materials, in particular to a composite hydrogel material for absorbing heavy metals and a preparation method thereof. Background technique [0002] With the rapid development of modern industry and rapid economic growth, the traditional extensive and labor-intensive economic development model has brought a series of environmental problems. Among them, the problem of water pollution is particularly serious. At present, water pollution has become a major problem that restricts economic development, affects social stability, endangers human health and destroys ecological balance. At the same time, my country's natural water resources are extremely limited. Therefore, the development and innovation of sewage treatment and sewage resource technology should be further valued. [0003] The patent document (CN201910153992.4) discloses a composite hydrogel material and its preparation me...

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
CPCB01J20/0248B01J20/0281B01J20/22B01J20/24B01J20/261B01J20/262B01J20/28047C02F1/288C02F2101/20
Inventor 黄柳莺许高杰
Owner 杭州凯博特环保科技开发有限公司
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