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Synthesis method and applications of magnetic nano high-molecular polymer

A high-molecular polymer and magnetic nanotechnology, applied in the field of analytical chemistry, can solve problems such as insufficient hydrophobicity of the surface, influence of adsorption capacity, and separation difficulties, so as to ensure separation speed and separation effect, increase utilization rate, and enhance removal rate Effect

Inactive Publication Date: 2016-02-03
云南健牛环境监测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these technologies, either the material cannot be reused, or the adsorption capacity is affected due to the insufficient hydrophobicity of the surface, or the magnetic force of the material is not strong enough, and the separation is difficult, etc.

Method used

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  • Synthesis method and applications of magnetic nano high-molecular polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) The synthesis of sodium citrate modified magnetic nano-ferric oxide is as follows:

[0031] ① Weigh 9.80g (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O, 6.75 g FeCl 3 ·6H 2 O, dissolved in deionized water to prepare 50 mL of Fe-containing 2+ and Fe 3+ mixed solution;

[0032] ②Transfer the mixed solution prepared in step ① into a three-necked bottle, heat it in a water bath at 60°C under nitrogen protection, add concentrated ammonia water dropwise under mechanical stirring at a speed of 1000rpm, control the total volume of concentrated ammonia water at 12.5mL, and drop until the solution is Black precipitate, stop adding ammonia water, add 16.1g sodium citrate, continue to stir for 2 hours, add the remaining ammonia water dropwise;

[0033] ③The black solution obtained above was collected by an external magnetic field, washed three times with 50 mL of acetone, and dried in vacuum at 40°C for 48 hours to obtain sodium citrate-modified magnetic nano-ferric oxide powder.

[...

Embodiment 2

[0042] (1) The synthesis of sodium citrate modified magnetic nano-ferric oxide is as follows:

[0043] ①Weigh 5.96gFeCl 2 4H 2 O, 8.11 g FeCl 3 ·6H 2 O, dissolved in deionized water to prepare 50 mL of Fe-containing 2+ and Fe 3+ mixed solution;

[0044] ② Transfer the mixed solution prepared in step ① to a three-necked bottle, and heat it in a water bath at 70°C under nitrogen protection. Add concentrated ammonia water dropwise under mechanical stirring at a speed of 800rpm. The total volume of concentrated ammonia water is controlled at 20mL until the solution turns black. Precipitate, stop adding ammonia water, add 17.6g sodium citrate, continue to stir for 3h, add the remaining ammonia water dropwise;

[0045] ③The black solution obtained above was collected by an external magnetic field, washed with 70mL of acetone for 4 times, and then vacuum-dried at 45°C for 40h to obtain sodium citrate-modified magnetic nano-ferric oxide powder.

[0046] (2) The synthesis of fer...

Embodiment 3

[0054] (1) The synthesis of sodium citrate modified magnetic nano-ferric oxide is as follows:

[0055] ① Weigh 13.72g (NH 4 ) 2 Fe(SO 4 ) 2 ·6H 2 O, 19.66gFe 2 (SO 4 ) 3 9H 2 O, dissolved in deionized water to prepare 50 mL of Fe-containing 2+ and Fe 3+ mixed solution;

[0056] ② Transfer the mixed solution prepared in step ① to a three-necked bottle, heat it in a water bath at 70°C under the protection of nitrogen, and add concentrated ammonia water dropwise under mechanical stirring at a speed of 600rpm. The total volume of concentrated ammonia water is controlled at 22mL until the solution turns black Precipitate, stop adding ammonia water, add 24.7g sodium citrate, continue to stir for 4 hours, add the remaining ammonia water dropwise;

[0057] ③The black solution obtained above was collected by an external magnetic field, washed with 100 mL of acetone for 5 times, and dried in vacuum at 50°C for 24 hours to obtain sodium citrate-modified magnetic nano-ferric ox...

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Abstract

The invention discloses a synthesis method of a magnetic nano high-molecular polymer. The polymer is polystyrene coated ferriferrous oxide nanoparticle, which is prepared through a chemical co-precipitation method. In the synthesis of ferriferrous oxide nanoparticle, trisodium citrate is taken as the modifier to improve the dispersibility of ferriferrous oxide in a water solution; at the same time, polystyrene can better cover the surface of ferriferrous oxide nanoparticles, the specific surface of the nanoparticle is large, at the same time, the hydrophobicity of polystyrene is large, and the polystyrene that is covered on the surface of ferriferrous oxide nanoparticle has good affinity on oil. The synthesized nanoparticle is super-paramagnetic, has a large specific surface and strong hydrophobicity, and thus can be used to process oil-containing wastewater. The wastewater treatment has the characteristics of short separation time, simple operation, high oil elimination rate, and environment-friendliness.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and in particular relates to a synthesis method and application of a magnetic nanometer polymer. Background technique [0002] Oily wastewater includes catering wastewater, oilfield wastewater, industrial discharge and mechanical leakage, etc. Its pollution to the environment is mainly manifested in the serious impact on the ecosystem and natural environment (soil, water). After oil enters the water body, it can float on the water surface and spread rapidly, forming an oil film to prevent atmospheric reoxygenation, cut off the source of oxygen in the water body, and hinder the photosynthesis of plankton; emulsified oil and dissolved oil pollute the water body and consume the water when they are decomposed by microorganisms The dissolved oxygen in the water will make the water body appear anoxic. At the same time, the concentration of carbon dioxide in the water will increase, which will reduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08K9/04C08K3/22C02F1/40B01D17/022
Inventor 焦扬龚瑜杨亚玲
Owner 云南健牛环境监测有限公司
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