Separation method of oil-water emulsion

A separation method and emulsion technology, applied in the field of emulsion separation, can solve the problems of small adsorption capacity and limitation of separation membrane, and achieve the effects of fast separation speed, high recycling rate and large adsorption capacity

Inactive Publication Date: 2018-08-24
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the generally small adsorption capacity of the separation membrane, it

Method used

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  • Separation method of oil-water emulsion
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  • Separation method of oil-water emulsion

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] Take 0.180mL (200mg) polyethylene glycol diacrylate (number average molecular weight 600), 100mg polyvinylbenzene particles (average particle size 4μm), 0.5μL N,N-dimethylaniline and 1.0mg peroxide Benzoyl was added to 1.1 mL of dimethyl sulfoxide and mixed uniformly. After nitrogen was introduced to remove oxygen, it was transferred to the syringe and sealed, and the reaction temperature was controlled at -18°C for 48 hours. The obtained product is fully washed with the elution solvent ethanol, and then dried to obtain a composite super-macroporous polymer.

[0034] The scanning electron micrograph of the composite superporous polymer prepared in this example is as follows figure 2 As shown, the schematic diagram of the oil-water emulsion separation process is as image 3 Shown.

[0035] Place the obtained composite super-large pore polymer material in a syringe, add water to swell and balance for 2 hours, add 1 mL of oil-water emulsion from the upper par...

Example Embodiment

[0037] Example 2

[0038] Take 0.36mL (400mg) polyethylene glycol diacrylate (number average molecular weight 600), 40mg polyvinylbenzene particles (average particle size 4μm), 0.2μL N,N-dimethylaniline and 0.4mg peroxide Benzoyl was added to 1.6 mL of dimethyl sulfoxide and mixed uniformly. After nitrogen was introduced to remove oxygen, it was transferred to the syringe and sealed, the reaction temperature was controlled at -18°C, and the reaction was carried out for 48 hours. The obtained product is fully washed with the elution solvent ethanol, and then dried to obtain a composite super-macroporous polymer.

[0039] Place the obtained composite super-large pore polymer material in a syringe, add water to swell and balance for 2 hours, add 1 mL of oil-water emulsion from the upper part of the column tube, only by gravity, the oil-water emulsion can flow through the polymer column material, and the water smoothly passes through the polymerization column Material, it takes 1 minu...

Example Embodiment

[0040] Example 3

[0041] Take 0.135mL (150mg) of polyethylene glycol diacrylate (number average molecular weight is 600), 150mg polyvinylbenzene particles (average particle size 4μm), 0.8μl N,N-dimethylaniline and 1.5mg peroxide Benzoyl was added to 1.09 mL of dimethyl sulfoxide and mixed uniformly. After nitrogen was introduced to remove oxygen, it was transferred to a syringe and sealed, the reaction temperature was controlled at -18°C, and the reaction was carried out for 48 hours. The obtained product is fully washed with the elution solvent ethanol, and then dried to obtain a composite super-macroporous polymer.

[0042] Place the obtained composite super-large pore polymer material in a syringe, add water to swell and balance for 2 hours, add 1 mL of oil-water emulsion from the upper part of the column tube, only by gravity, the oil-water emulsion can flow through the polymer column material, and the water smoothly passes through the polymerization column Material, it takes...

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Abstract

The invention relates to a separation method of oil-water emulsion. The separation method comprises the following steps: carrying out freezing polymerization reaction to uniformly mix polyethylene glycol diacrylate, polydivinylbenzene particles and an initiator in a solvent; after introducing nitrogen gas to remove oxygen, transferring into an injector and sealing; controlling the reaction temperature to be -18 DEG C and reacting for 48 hours; after sufficiently washing an obtained product through an eluting solvent, carrying out oil-water emulsion separation on the product only under the action of gravity, wherein the oil-water separation efficiency can reach 99.8 percent, the oil content in water is less than 50ppm and the adsorption capacity of a polymer material on the oil-water emulsion is higher than 2.8g/g. The preparation method provided by the invention is simple and reliable and post-treatment is simple; an obtained material is used for separating the oil-water emulsion and has the advantages of rapid separation speed, high separation efficiency, good repeated utilization rate and great adsorption capacity.

Description

technical field [0001] The invention relates to a method for separating an oil-water emulsion, which belongs to the technical field of emulsion separation. Background technique [0002] Oily wastewater exists widely in all aspects of human life, from oil exploration and product development, to the impact of various types of oil spills and marine oil spills on the human living environment, from industrial wastewater discharge to human daily life. Various wastewaters pose a threat to human health. The development of materials and processes with high-efficiency separation capabilities for oily wastewater has broad application value. [0003] According to the form of oil-water composition, oily wastewater can be simply divided into two types: oil-water mixture and oil-water emulsion. At present, a large number of effective methods have been reported for the separation of oil-water mixtures, and various high-efficiency oil-water separation materials have been developed. Most o...

Claims

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Application Information

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IPC IPC(8): B01D17/04C08G81/02
CPCB01D17/04C08G81/025
Inventor 陈志勇王银萍陈明乾匡帅潘奇伟夏方诠
Owner UNIV OF JINAN
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