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Net film applied to oil-in-water emulsion separation, preparation method and application of net film

An emulsion separation and omentum membrane technology, applied in separation methods, liquid separation, filtration separation, etc., can solve the problems that the omentum membrane can only separate a certain kind of emulsion, the conditions are difficult to control, and the production process is complicated, and it is easy to clean and separate. Fast, low-cost effects

Active Publication Date: 2015-04-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, most omentum can only separate a certain kind of emulsion, but cannot be widely used
In addition, the production process of these omentum is relatively complicated, there are many steps and the conditions are difficult to control, which also brings limitations to practical applications.

Method used

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  • Net film applied to oil-in-water emulsion separation, preparation method and application of net film
  • Net film applied to oil-in-water emulsion separation, preparation method and application of net film
  • Net film applied to oil-in-water emulsion separation, preparation method and application of net film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1, preparation is used for the omentum of oil-water emulsion separation and its oil-water emulsion separation effect

[0049] 1) Preparation of omentum for oil-water emulsion separation

[0050] (1) The 300-mesh copper mesh is immersed in ethanol and acetone in turn, each ultrasonically cleaned for 15 minutes, soaked in hydrochloric acid for 1 hour (to remove possible impurities on the metal mesh to facilitate subsequent reactions), and deposit copper particles by electrochemical deposition (Specifically: place the above-mentioned copper mesh in 0.5mol / L copper sulfate solution, use an electrochemical workstation to perform electrodeposition treatment, the reaction voltage is 1.5V, and the reaction time is 1min), increase its roughness, and dry at room temperature;

[0051] (2) At room temperature, add 6.38g zinc acetate, 0.14g sodium hydroxide and 100ml water in a 250ml beaker, stir well to obtain a mixed solution, in this mixed solution, the molar concentra...

Embodiment 2

[0059] Embodiment 2, preparation is used for the omentum of oil-water emulsion separation and its oil-water emulsion separation effect

[0060] 1) Preparation of omentum for oil-water emulsion separation

[0061] (1) The 400-mesh copper grid is immersed in ethanol and acetone in turn, ultrasonically cleaned for 15 minutes each, soaked in hydrochloric acid for 1 hour, and dried at room temperature;

[0062] (2) At room temperature, add 5.80g zinc acetate, 0.168g potassium hydroxide and 100ml water in a 250ml beaker, stir well to obtain a mixed solution, in this mixed solution, the molar concentration of zinc acetate is 0.50mol / L, potassium hydroxide The molar concentration is 0.030mol / L;

[0063] (3) The mixed solution obtained in step (2) is transferred to the hydrothermal reaction kettle, and the copper mesh obtained in the step (1) is also placed in the reaction kettle, so that it is completely immersed in the mixed solution, at 80 The hydrothermal reaction was carried out...

Embodiment 3

[0070] Embodiment 3 preparation is used for the omentum of oil-water emulsion separation and its oil-water emulsion separation effect

[0071] 1) Preparation of omentum for oil-water emulsion separation

[0072] (1) 400-mesh stainless steel is immersed in ethanol and acetone in turn, ultrasonically cleaned for 15 minutes each, soaked in hydrochloric acid for 1 hour, and dried at room temperature;

[0073] (2) At room temperature, add 6.96g of zinc acetate, 0.084g of potassium hydroxide and 100ml of water into a 250ml beaker, and stir evenly to obtain a mixed solution. In this mixed solution, the molar concentration of zinc acetate is 0.60mol / L, lithium hydroxide The molar concentration is 0.035mol / L;

[0074] (3) The mixed solution obtained in step (2) is transferred to the hydrothermal reaction kettle, and the stainless steel mesh obtained in the step (1) is also placed in the reaction kettle, so that it is completely immersed in the mixed solution, at 90 The hydrothermal r...

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Abstract

The invention relates to a net film applied to oil-in-water emulsion separation, a preparation method and application of the net film. The net film is a composite net film formed by loading metal oxide layers of micro-nano composite structures on net holes and net wires of a metal net, wherein the metal oxide layers of the micro-nano composite structures are formed by clustering nano-zinc oxide and nano-cobalt oxide. The preparation method of the net film comprises the following steps: (1) dissolving an alkaline medium and dissolvable zinc salt in water and uniformly stirring to prepare a mixed solution A; (2) dipping a metal net in the mixed solution A and carrying out hydrothermal reaction to prepare a nano-zinc oxide loaded metal net; (3) dissolving carbamide and dissolvable cobalt salt in water and uniformly stirring the mixture to prepare a mixed solution B; and (4) taking out the metal net in the step (2), washing the metal net and dipping the metal net in the mixed solution B, carrying out hydrothermal reaction, and burning the metal net to prepare the net film. The net film can be widely applied to oil-water separation.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and functional materials, and in particular relates to an omentum used for oil-water emulsion separation and its preparation method and application. Background technique [0002] Surface wettability (also known as wettability) is an important property of solid materials. In recent years, the field of materials has developed rapidly, and nanomaterials with special wettability have also received extensive attention. Intelligent nano-interface materials with different functions can be prepared by combining the four basic special wettability properties of superhydrophilic, superhydrophobic, superoleophilic, and superoleophobic. These materials have broad application prospects in human production and life. [0003] With the development of society and economy, environmental problems have become increasingly prominent, especially the control of water pollution, which has become a global i...

Claims

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Application Information

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IPC IPC(8): B01D17/022
CPCB01D17/085B01D39/10B01D39/14B01D2239/10B01D2239/1241
Inventor 冯琳林鑫刘娜
Owner TSINGHUA UNIV
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