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Functionalized polystyrene microspheres and preparation method and application thereof

A polystyrene microsphere, functionalized technology, applied in chemical instruments and methods, inorganic chemistry, alkali metal compounds, etc., can solve the problems of low metal ion removal efficiency and poor resin stability, and achieve improved stability. , to achieve the effect of recycling and reducing total nitrogen emissions

Active Publication Date: 2019-01-25
南通乐道环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of poor resin stability and low removal efficiency of metal ions in the current strong acid solution treatment process, the present invention designs and synthesizes a radiation-crosslinked functional resin for the efficient removal of aluminum ions in aluminum-containing water, especially in nitric acid aqueous solution.

Method used

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  • Functionalized polystyrene microspheres and preparation method and application thereof
  • Functionalized polystyrene microspheres and preparation method and application thereof
  • Functionalized polystyrene microspheres and preparation method and application thereof

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Embodiment approach

[0021] According to a preferred embodiment of the present invention, the unsaturated acid is a mixture of unsaturated phosphoric acid and unsaturated sulfonic acid and / or unsaturated carboxylic acid, that is, the unsaturated acid is unsaturated phosphoric acid and unsaturated sulfonic acid or a mixture of unsaturated phosphoric acid and unsaturated carboxylic acid, or a mixture of unsaturated phosphoric acid, unsaturated sulfonic acid and unsaturated carboxylic acid, at this time, the corresponding functionalized polystyrene microspheres have a higher stability and removal efficiency of aluminum ions. Further, the weight ratio of the amount of unsaturated phosphoric acid to the total amount of unsaturated sulfonic acid and unsaturated carboxylic acid is preferably 1:(1-6), more preferably 1:(2-4). It should be noted that when the unsaturated acid contains only one of unsaturated sulfonic acid and unsaturated carboxylic acid, the total amount of unsaturated sulfonic acid and un...

Embodiment 1

[0032] (1) Preparation of functionalized polystyrene microspheres:

[0033] Add vinylphosphoric acid (30g), vinylsulfonic acid (30g), polystyrene microspheres (280g, particle size 0.5-3μm) and deionized water (500mL) into a 1L round bottom flask, magnetically stir, and nitrogen gas 20 minutes to remove oxygen from the solution, seal. The above-mentioned round bottom flask was then placed in 60 Irradiate 100kGy under the Co irradiation source. After the irradiation, the flask was opened, and the mixture in the bottle was packed into a column, washed with deionized water to remove unreacted monomers and homopolymers, and set aside. When packing the column, air bubbles should be prevented from remaining in the packing layer.

[0034] (2) Adsorption and removal of aluminum ions in aqueous nitric acid solution:

[0035] Nitric acid wastewater containing aluminum ions ([H + ]=0.1-2mol / L, [Al 3+]=0.2-1.0mol / L) from the top of the column to the packed column at a flow rate of 60...

Embodiment 2

[0042] (1) Preparation of functionalized polystyrene microspheres:

[0043] Into a 1 L round bottom flask were added vinyl phosphoric acid (10 g), vinyl sulfonic acid (30 g), acrylic acid (30 g), polystyrene microspheres (280 g, particle size 0.5–3 μm) and deionized water (500 mL), Stir magnetically, pass nitrogen gas for 20 minutes to remove oxygen in the solution, and seal. The above-mentioned round bottom flask was then placed in 60 Irradiate 100kGy under the Co irradiation source. After the irradiation, the flask was opened, and the mixture in the bottle was packed into a column, washed with deionized water to remove unreacted monomers and homopolymers, and set aside. When packing the column, air bubbles should be prevented from remaining in the packing layer.

[0044] (2) Adsorption and removal of aluminum ions in aqueous nitric acid solution:

[0045] Nitric acid wastewater containing aluminum ions ([H + ]=0.1-2mol / L, [Al 3+ ]=0.2-1.0mol / L) from the top of the colu...

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Abstract

The invention belongs to the field of water treatment and particularly discloses functionalized polystyrene microspheres, a preparation method and application thereof and a treatment method of aluminum-containing water. The functionalized polystyrene microspheres are prepared through gamma-ray radiation and / or electron beam irradiation; the functionalized polystyrene microspheres comprise polystyrene microspheres and polymer layers, which are polymerized from a functionalization monomer, bonded to surfaces of the polystyrene microspheres; the functionalization monomer is unsaturated acid. Whenthe functionalized polystyrene microspheres provided by the invention are used for treating aluminum-containing water, particularly aluminum-containing acidic aqueous solutions, the functionalized polystyrene microspheres not only can maintain sufficient stability and increase the removal efficiency of aluminum ions, but also can achieve the recycling of water, for example, the recycling of nitric acid can be achieved when the aluminum-containing water is an aluminum-containing nitric acid solution, and the emission of total nitrogen is lowered, so that the functionalized polystyrene microspheres have a great industrial application prospect.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a functionalized polystyrene microsphere, a preparation method and application thereof, and a treatment method for aluminum-containing water. Background technique [0002] At present, a large amount of acidic aqueous solution containing aluminum ions is produced during the processing of aluminum products. Studies have confirmed that excessive aluminum content in drinking water will lead to early aging and even senile dementia. The research of the World Health Organization shows that the allowable intake of aluminum per kilogram of body weight of the human body should not exceed 1 milligram, and the aluminum content in drinking water should not exceed 0.2 milligrams per liter according to my country's regulations. At the same time, the eutrophication of the environmental water body caused by the discharge of nitrate in the aqueous solution has attracted great attention ...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F230/02C08F228/02C08F220/06C08F2/54C08F2/46B01J20/26B01J20/28C02F1/28
CPCB01J20/261B01J20/28021C02F1/285C08F2/46C08F2/54C08F257/02C08F230/02C08F228/02C08F220/06
Inventor 张台华彭荣陈建军
Owner 南通乐道环保技术有限公司
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