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Pickering emulsion packed column and method for separation and extraction of organic matter based on pickering emulsion packed column

A technology for packing columns and organic substances, applied in the field of emulsion application, can solve the problems of limited extraction capacity and poor separation effect, and achieve the effects of convenient operation, simple preparation and great application prospects.

Active Publication Date: 2021-01-08
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of extraction and separation is more convenient than conventional extraction operations, but its extraction capacity is limited and the separation effect is poor

Method used

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  • Pickering emulsion packed column and method for separation and extraction of organic matter based on pickering emulsion packed column
  • Pickering emulsion packed column and method for separation and extraction of organic matter based on pickering emulsion packed column
  • Pickering emulsion packed column and method for separation and extraction of organic matter based on pickering emulsion packed column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 A Pickering emulsion packed column

[0035] (1) Preparation method

[0036] 1. Graphene oxide was prepared by the Hummer method. Graphene oxide was mixed with water and ultrasonicated for 15 minutes to prepare a uniformly dispersed graphene oxide aqueous solution with a concentration of 0.4 g / L, sealed in a glass bottle and stored at room temperature for future use.

[0037] 2. The hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphorus ionic liquid is used as the oil phase in the emulsion. Measure 3mL of 0.4g / L graphene oxide aqueous solution, 1mL of 1-butyl-3-methylimidazolium hexafluorophosphorus ionic liquid, pour it into a 20mL sample bottle, and vortex at 3500rpm for 5 minutes to form a stable ionic liquid in water Type Pickering Lotion.

[0038] 3. Wet the sand plate chromatography column with a diameter of 1 cm and a height of 10 cm with water, close the stopcock, fill it with 3 mL of water, and then pour all the ionic liquid-in-wa...

Embodiment 2

[0042]Example 2 Method for Separating and Extracting Rhodamine and Methyl Orange Mixed Aqueous Solution Based on Pickering Emulsion Packed Column

[0043] Method: The Pickering emulsion packed column prepared in Example 1 was used for separation and extraction performance experiments.

[0044] Prepare 20 mL of a mixed aqueous solution with a concentration of 2 g / L methyl orange and 2 g / L rhodamine. Take 0.5mL of the mixed aqueous solution, pour it into the Pickering emulsion packed column, add the mixed aqueous solution and start sampling, take a bottle of sample every 1mL, and add 1mL of water to the Pickering emulsion packed column for each 1mL of effluent, and replenish continuously during the period The mobile phase is water, record the time and flow rate, and conduct ultraviolet detection for every 1 mL of the effluent from the emulsion-filled column.

[0045] Figure 4a and Figure 4b are the respective UV absorption spectra of rhodamine and methyl orange.

[0046] ...

Embodiment 3

[0049] Example 3 Method for Separating and Extracting Resorcinol and Tetranitroaniline Mixed Aqueous Solution Based on Pickering Emulsion Packed Column

[0050] (1) A Pickering emulsion packed column

[0051] Preparation method: the preparation method is the same as in Example 1, the only difference is that the ionic liquid is changed to 1-ethyl-3-methylimidazolium bistrifluoromethanesulfonylimide ionic liquid, and the obtained Pickering emulsion packed column is used for The following separation and extraction performance experiments.

[0052] (2) Separation and extraction method

[0053] Prepare 20 mL of a mixed aqueous solution with a concentration of 2 g / L resorcinol and 2 g / L tetranitroaniline. Take 0.5mL of the mixed aqueous solution, pour it into the Pickering emulsion packed column, add the mixed aqueous solution and start sampling, take a bottle of sample every 1mL, and add 1mL of water to the Pickering emulsion packed column for each 1mL of effluent, and replenish ...

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Abstract

The invention relates to a Pickering emulsion packed column and a method for separating and extracting organics on the basis of the Pickering emulsion packed column. The technical scheme of the Pickering emulsion packed column is that the oxidized grapheme plate is taken as a particle surface active agent, a hydrophobic ionic liquid is taken as an oil phase, and oxidized grapheme plate emulsifiedwater and the hydrophobic ionic liquid form an water-encased ionic liquid type Pickering emulsion. The emulsion is added to a pre-wetted chromatographic column with a sand plate, flowing phase water is added dropwise repeatedly until the height of the emulsion column doesn't change, and the Pickering emulsion packed column is prepared. An ordinary chromatographic column can be replaced with the prepared Pickering emulsion packed column, a new gathering and extracting way is created, and the pollutants in the water can be efficiently separated and extracted.

Description

technical field [0001] The invention relates to a method for separating and extracting organic matter based on a Pickering emulsion column, and specifically relates to a new direction of emulsion application, preparation based on a Pickering emulsion column and its application in separating and extracting organic matter. Background technique [0002] Compared with ordinary emulsions, Pickering emulsions have many advantages, and are widely used in cosmetics, food, catalysis, and new functional materials. Yang Hengquan and others prepared Pickering emulsion packed columns, which were applied to catalysis and other fields, which greatly broadened the research scope of emulsions. [0003] Compared with the traditional chromatography column, the biggest difference of the emulsion column is that the Pickering emulsion replaces the conventional packing phases such as alumina and molecular sieve. Many functions and applications. [0004] Peng Junxia et al. used the amphipathic Fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/10C02F1/26C02F1/28C02F101/30
CPCB01D15/10C02F1/26C02F1/28C02F2101/308
Inventor 宋溪明兰亚林刘大亮孟庆博张赫何冬青
Owner LIAONING UNIVERSITY