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Preparation method of intelligent type oil-water separation material

An intelligent technology for oil-water separation, applied in separation methods, filtration separation, liquid separation, etc., can solve the problems of single oil-water separation method, inability to flexibly change the separation method, and inability to achieve reversible conversion of different wetting states. Simple raw material and process, low cost, good separation effect

Active Publication Date: 2018-05-08
刘丁菡 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that these oil-water separation materials usually only have a specific wettability-superhydrophobic or superhydrophilic, and cannot achieve reversible switching between different wet states, which means that these materials can only be used for separation Water or oil can be separated, but it is not possible to flexibly choose to separate water or oil according to different separation requirements; in addition, these materials have a single way to achieve oil-water separation—only adsorption or filtration, and the separation method cannot be flexibly changed according to different separation requirements. These have seriously affected the practical application of oil-water separation materials.

Method used

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  • Preparation method of intelligent type oil-water separation material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] The method for preparing an intelligent oil-water separation material, the specific steps are as follows:

[0021] ①Compress the commercially available loofah pulp 40 times longitudinally and 10 times laterally to obtain compressed loofah pulp with a height of about 1 cm and a diameter of about 1 cm, and immerse the compressed loofah pulp in 0.5mol / L dilute hydrochloric acid solution for ultrasonic treatment After 2 minutes, take it out, wash it with pure water, and dry it with compressed air;

[0022] ② Submerge the compressed loofah pulp processed in step ① in 2.0mol / L copper sulfate solution for ultrasonic treatment for 3 hours, then take out the compressed loofah pulp, pre-freeze it at -20°C for 3 hours, and then place it at -40°C ℃, 1Pa pressure, freeze-drying for 36 hours, take out the loofah pulp compressed block, and heat it in the air at 180 ℃ for 6 hours;

[0023] ③The compressed loofah pulp processed in step ② is subjected to plasma treatment for 15 minutes....

Embodiment 2

[0025] Further, on the basis of Example 1, 4. the superhydrophobic / superoleophilic oil-water separation material obtained in step 3. was subjected to infrared radiation treatment for 30 minutes, and the light source for infrared radiation treatment was a 275W infrared lamp, and the distance from the surface of the material was 4cm, i.e. A super-hydrophilic / underwater super-oleophobic oil-water separation material is obtained, which is used as a filter-type oil-water separation material to filter and separate water and oil to achieve oil-water separation.

Embodiment 3

[0027] Further, on the basis of Example 2, 5. the super-hydrophilic / underwater super-oleophobic oil-water separation material obtained in step 4. was then subjected to plasma treatment for 15 minutes, and the plasma treatment took high-purity nitrogen as the gas source, and the vacuum degree was 20Pa, power 50W, that is, a superhydrophobic / superoleophilic oil-water separation material, which is used as an adsorption-type oil-water separation material to absorb oil in water to achieve oil-water separation.

[0028] The above steps ③, ④ and ⑤ can be repeated many times, so as to realize the reversible conversion between the superhydrophobic / superoleophilic and superhydrophilic / underwater superoleophobic wetting states of the prepared oil-water separation material, thus obtaining the intelligent type oil-water separation material.

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Abstract

The invention provides a preparation method of an intelligent type oil-water separation material. Specifically, the intelligent type oil-water separation material which can conveniently and rapidly realize reversible conversion between different super-hydrophobic / super-oleophylic and super-hydrophilic / underwater super-oleophobic wet states is prepared by taking biomass loofah sponge as a raw material through proper treatment; the material can be used as an adsorption type oil-water separation material and can also be used as a filtering type oil-water separation material. According to the preparation method provided by the invention, a natural three-dimensional net-shaped porous structure of the biomass loofah sponge is ingeniously utilized and the biomass loofah sponge is used as the rawmaterial and is cheap and easy to obtain; the prepared oil-water separation material has a good separation effect on an oil-water mixture, can be repeatedly used for many times, has intelligent characteristics and can flexibly meet different oil-water separation requirements.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation, and in particular relates to a preparation method of an intelligent oil-water separation material. Background technique [0002] In recent years, water pollution caused by oil and chemical leakage has often occurred, seriously threatening the ecological environment and human living environment. Therefore, it is urgent to develop efficient and convenient oil-water separation technology, and oil-water separation materials are the key to oil-water separation technology. , Adsorption and filter oil-water separation materials are considered to be very ideal choices due to their convenient operation, so in recent years people have carried out a lot of research on adsorption and filter oil-water separation materials. Among the adsorption-type oil-water separation materials, the most representative one is the (super) hydrophobic / (super) lipophilic sponge prepared by appropriate treatment wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022B01J20/30B01J20/20B01D39/16
CPCB01D17/0202B01D39/1615B01D2239/10B01J20/20B01J2220/4825
Inventor 刘丁菡李凌杰雷惊雷
Owner 刘丁菡
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