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Magnetic solid polyamino adsorbent granular material, preparation method and application thereof

A granular material and polyamino technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of limited application range, organic coating layer or amino group is easy to fall off, and ferric oxide is resistant to oxidation and acid resistance are not strong, etc., to achieve the effect of low treatment cost and simple method

Inactive Publication Date: 2017-06-09
CUG WUHAN GOLDEN SHIELD ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the defect (1), it is difficult to apply the material to the solid-liquid suspension (mixing) system, the defect (2) causes the oxidation resistance and acid resistance of ferroferric oxide to be weak, and the defect (3) leads to the organic coating layer or The amino group is easy to fall off, and the defect (4) causes the ester bond to be prone to hydrolysis reaction and addition substitution reaction under acidic and alkaline conditions, which limits the application range of this type of material

Method used

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  • Magnetic solid polyamino adsorbent granular material, preparation method and application thereof
  • Magnetic solid polyamino adsorbent granular material, preparation method and application thereof
  • Magnetic solid polyamino adsorbent granular material, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0065] A kind of magnetic polyamino granular material, when polyamino adsorption group wherein is from polyallylamine (hydrochloride) that degree of polymerization is 30, its preparation method is described as follows:

[0066] 40g of Fe with an average particle size of 0.02μm 3 o 4 Magnetic powder, 40g tetraethyl orthosilicate, mixed with 300ml absolute ethanol, add dropwise a mixture of 40ml ammonia water and 20ml ethanol at 20°C for 1 hour, then react at 70°C for 10h, filter, wash with ethanol, and dry at 110°C Get FS.

[0067] Take 40gFS, 20g vinyltriethyl (m)oxysilane, mix 100ml ethanol, 3ml ammonia water, stir at 50°C for 10h, make it silanized on the surface of the substrate, then use a magnet to separate the granular material, wash with ethanol, 60 ℃ drying, the magnetic powder material FS@- double bond coated with carbon-carbon double bond on the surface is obtained.

[0068] Take 40g FS@- double bond, 80g methyl methacrylate, 400ml water, 2g benzoyl peroxide...

Embodiment 2

[0073] A magnetic polyamino granular material, when the polyamino adsorption group wherein is from diethylenetriamine, its preparation method is described as follows:

[0074] Mix 40g of ferric iron tetroxide powder with an average particle size of 0.20μm (content greater than 99%), 10g of tetraethyl orthosilicate, and 300ml of absolute ethanol, and add dropwise a mixture of 40ml of ammonia water and 20ml of ethanol at 20°C for 1 hour , and then reacted at 70°C for 10h, filtered, washed with ethanol, and dried at 110°C to obtain FS.

[0075] Mix 40gFS, 20g vinyltrichlorosilane, 200ml ethanol, 3ml ammonia water, stir at 55°C for 8h to cause silanization reaction on the surface of the substrate, then use a magnet to separate the granular material, wash with ethanol, and dry at 60°C to obtain Magnetic powder material FS@-double bond coated with carbon-carbon double bond on the surface.

[0076] Take 40g of FS@- double bond, 60g of methyl methacrylate and 20g of glycidyl me...

Embodiment 3

[0081] A kind of magnetic polyamino particle material, when polyamino adsorption group wherein is from the degradation product of chitosan, its preparation method is described as follows:

[0082] Mix 40g of magnetite powder with an average particle size of 50.0μm (content greater than 90%), 10g of tetraethyl orthosilicate, and 300ml of absolute ethanol, and add a mixture of 40ml of ammonia water and 20ml of ethanol dropwise at 20°C for 1 hour. Then react at 70°C for 10h, filter, wash with ethanol, and dry at 110°C to obtain FS.

[0083] Take 40gFS, 20g γ-(methacryloyloxy)propyltrimethoxysilane, 200ml toluene, mix them with 3ml ammonia water, stir at 55°C for 8 hours to make silanization reaction occur on the surface of the substrate, and then use a magnet to separate the granular material, After washing with ethanol and drying at 60°C, the magnetic powder material FS@- double bond coated with carbon-carbon double bond was obtained.

[0084] Take 40g of FS@- double bond...

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Abstract

The invention relates to a polyamino-coated magnetic solid polyamino adsorbent granular material of which the particle size is 0.5-500.0 mu m. The granular material has the inorganic / organic multi-shell core-shell structure and the stable structure of connecting the polyamino adsorptive groups by carbon nitrogen bonds. The preparation method mainly comprises the following basic steps: (1) preparing an inorganic matter coating; (2) carrying out surface double bond modification; (3) preparing an organic matter coating; and (4) preparing the magnetic solid polyamino adsorbent granular material. The magnetic solid polyamino adsorbent granular material can generate selective chemical adsorption effects with heavy metal substances in a water body or solid-liquid suspension (mixed) system within a wide pH range, can be easily separated from the water body or solid-liquid suspension (mixed) system by a magnet or magnetic separator, is renewable and reusable, can implement centralized treatment on heavy metals, and can be widely used in environmental protection, pollution treatment, heavy metal substance recovery, mineral separation, hydrometallurgy and other industries.

Description

technical field [0001] The invention relates to a magnetic solid polyamino adsorbent particle material, a preparation method and an application thereof, and belongs to the field of new materials and resource environment. Background technique [0002] The current treatment of heavy metal pollution has become an urgent global environmental problem. Among them, water pollution mainly refers to the pollution of water bodies (including rivers, lakes, reservoirs, oceans, industrial water, discharge water and drinking water, etc.) by heavy metal pollutants, including cadmium, lead, mercury, chromium, arsenic, etc. It is mainly industrial wastewater, such as wastewater discharged from mineral processing plants, electroplating plants, and steel plants. [0003] In addition to the heavy metals contained in the soil itself, the rest are due to the pollution of heavy metals into the soil. Soil heavy metal pollution mainly comes from three aspects: the deposition of heavy metals in the...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F11/00C02F1/28C02F1/62
CPCB01J20/10B01J20/22C02F1/28B01J20/265B01J20/06B01J20/103B01J20/28009B01J20/28016B01J2220/46B01J2220/4806B01J2220/4812B01J2220/4825C02F1/285C02F1/288C02F11/00C02F11/004C02F2101/103C02F2101/20C02F2101/22C02F2303/04
Inventor 范力仁周洋范羽仪郑曼洁宋吉青张引周小丹刘路
Owner CUG WUHAN GOLDEN SHIELD ENVIRONMENTAL TECH CO LTD
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