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Silicon magnesium-based nano-sized water treatment agent and preparation method thereof

A nano-water and treatment agent technology, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as waste of raw materials, loss of adsorbent, deterioration of adsorption performance, etc. The effect of low cost, long service life and strong adsorption capacity

Inactive Publication Date: 2017-07-28
湖南华佳纳米新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this adsorbent not only causes a waste of raw materials, but also has a lack of adsorption performance of the obtained adsorbent.
More importantly, due to the disadvantages of the above-mentioned adsorbents, in actual use, it is not easy to recycle, usually need to collect the adsorbent after natural sedimentation or centrifugation, which is inconvenient to use and will also cause the loss of the adsorbent; It is pressed into an easy-to-use profile. Due to its lack of structural characteristics, its adsorption performance will deteriorate, and its actual applicability is poor.

Method used

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  • Silicon magnesium-based nano-sized water treatment agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 20g of nano-magnesia powder (particle size 200nm, purity 98.5%), 2.0g of epoxy resin, 3.0g of dioctyl maleate sodium sulfonate, add to 50mL of deionized water, and heat at 50°C 1. Stir at a constant temperature for 60 min at a stirring speed of 500 r / min to form a magnesium oxide suspension. Add 80g of hollow vitrified microspheres (particle size 0.2mm, purity 98.0%) to the above magnesium oxide suspension at a constant speed, and stir at a temperature of 85°C and a stirring speed of 450r / min for 90min to form a silicon-magnesium slurry. The slurry is subjected to mold compression molding and microwave carbonization treatment at a temperature of 450° C. to obtain a cylindrical silicon-magnesium-based nanocomposite material.

[0027] Get this material 1.0g to volume 500mL, the methyl orange removal rate of concentration 60mg / L methyl orange solution at normal temperature after adsorption treatment 30min is 98.2%, to volume 500mL, the Cr(III) salt solution of concen...

Embodiment 2

[0029]Weigh 10g of nano-magnesia powder (particle size 100 nm, purity 98.5%), 1.0g phenolic resin, 1.0g triallyl cyanurate, add to 30mL deionized water, and stir at a temperature of 25°C and a stirring speed of Stir at a constant temperature for 90 min at 1000 r / min to form a magnesium oxide suspension. Add 50g of hollow vitrified microspheres (particle size 0.5mm, purity 98.0%) to the above magnesium oxide suspension at a constant speed, and stir at a temperature of 85°C and a stirring speed of 450r / min for 90min to form a silicon magnesium slurry. The slurry is subjected to mold compression molding and microwave carbonization treatment at a temperature of 350° C. to obtain a cuboid silicon-magnesium-based nanocomposite material.

[0030] Get this material 1.0g to volume 500mL, concentration 35mg / L rhodamine B solution, the methyl orange removal rate 99.0% after adsorption treatment 30min at normal temperature, to volume 500mL, concentration 10mg / L Cr (IV) salt solution at no...

Embodiment 3

[0032] Weigh 50g of nano-magnesia powder (particle size 150 nm, purity 98.5%), add 15.0g of melamine formaldehyde resin to 100mL of deionized water, and stir at a temperature of 80°C and a stirring speed of 100r / min for 30min to form a magnesium oxide suspension liquid. Add 90g of hollow vitrified microspheres (particle size 0.1mm, purity 98.0%) to the above magnesium oxide suspension at a constant speed, and stir at a temperature of 85°C and a stirring speed of 450r / min for 90min to form a silicon-magnesium slurry. The slurry is subjected to mold compression molding and microwave carbonization treatment at a temperature of 350° C. to obtain a spherical silicon-magnesium-based nanocomposite material.

[0033] Get this material 1.0g to the volume 500mL, concentration 20mg / L methylene blue solution, the methyl orange removal rate after adsorption treatment 40min at normal temperature is 99.0%, to the volume 500mL, concentration 10mg / L Cu(II) salt solution adsorption at normal te...

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Abstract

The invention provides a preparation method of a silicon magnesium-based nano-sized water treatment agent. The preparation method comprises the following steps: (1) mixing nano-sized magnesium oxide and an adhesive, adding water, and stirring to obtain a nano-sized magnesium oxide suspension; (2) adding hollow glass beads into the nano-sized magnesium oxide suspension obtained in the step (1), and stirring to obtain a mixed slurry; (3) performing compression moulding on the mixed slurry obtained in the step (2), and then performing high-temperature carbonization to obtain the silicon magnesium-based nano-sized water treatment agent, wherein the adhesive is at least one of epoxy resin, melamine formaldehyde resin, urea formaldehyde resin, phenolic aldehyde-epoxy resin, acrylic resin, phenolic aldehyde-polyvinyl acetal, phenol formaldehyde resin, polybenzimidazole, polyimide, sodium diethylhexyl sulfosuccinate, and triallyl cyanurate. The invention further provides a water treatment agent prepared according to the preparation method. The water treatment agent prepared according to the preparation method provided by the invention is strong in adsorption capacity, long in service life and low in cost and can be industrially produced and applied.

Description

technical field [0001] The invention belongs to the technical field of water treatment agents, and in particular relates to a silicon-magnesium-based nanometer water treatment agent and a preparation method thereof. Background technique [0002] Pollutants in water include inorganic pollutants and organic pollutants. Inorganic pollutants mainly include heavy metal ions such as lead, chromium, mercury, and copper. These heavy metal elements are difficult to degrade, easy to accumulate, irreversible, highly toxic, slow in metabolism, and easy to be bioaccumulated in the environment. Long-term drinking of water polluted by heavy metals can cause acute and chronic poisoning or cause cancer of the body. Organic pollutants mainly include oxygen-consuming non-toxic organic substances (such as protein, fat and carbohydrates, etc.) and toxic organic substances (such as phenolic compounds, organic pesticides and polycyclic aromatic hydrocarbons, dyes and food additives, etc.), these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/28B01J20/30C02F1/28
CPCB01J20/041B01J20/10B01J20/28014C02F1/281
Inventor 郑小刚刘伟华田芸嘉刘妍
Owner 湖南华佳纳米新材料科技有限公司
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