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Preparation method of adsorption type demulsifier for oil-water separation of cleaning waste liquid

An oil-water separation and adsorption technology, which is applied in the field of polymer material preparation, can solve the problem of non-adsorption of the oil phase, and achieve the effect of easy operation and simple formula

Inactive Publication Date: 2020-06-19
SOUTHEAST UNIV +1
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Problems solved by technology

A large number of research reports have shown that the modified porous silica microspheres have selective adsorption on heavy metal ions and harmful gases, but have almost no adsorption on oil phase (Chiang W S, Fratini E, Baglioni P, Chen J H, Liu Y.Langmuir ,2016,32(35):8849-8857.Xie Y Y,Wang J,Wang M Z,Ge X W.Journal of Hazardous materials,2015,297:66-73.)

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  • Preparation method of adsorption type demulsifier for oil-water separation of cleaning waste liquid
  • Preparation method of adsorption type demulsifier for oil-water separation of cleaning waste liquid
  • Preparation method of adsorption type demulsifier for oil-water separation of cleaning waste liquid

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preparation example Construction

[0026] The invention provides a preparation method of adsorption-type demulsifier microspheres for cleaning waste liquid oil-water separation, including:

[0027] A) Using solid polymethylsilsesquioxane microspheres (PSQ) as a template, a porous silica layer is coated on the surface by emulsion method to obtain PSQ@FS microspheres;

[0028] B) Surface functional modification of PSQ@FS microspheres with a silane coupling agent containing C=C;

[0029] C) The surface of the modified porous PSQ@FS microspheres obtained in step B is grafted with polyether polyquaternary ammonium salt (PPA) to obtain adsorption-type demulsifier microspheres (PSQ@FS@PPA) for cleaning waste liquid oil-water separation .

[0030] The preparation method of the adsorption type demulsifier microspheres for cleaning waste liquid oil-water separation provided by the present invention firstly coats the surface of the PSQ solid microspheres with a loose porous silica layer, and then couples with C=C-containing silan...

Embodiment 1

[0055] Preparation of PSQ@FS: Weigh 5g CTAB into a 500mL round-bottom flask, add 150mL deionized water, and then add 3g TEA and 5g PSQ microspheres for 20min ultrasonic dispersion. Add 150 mL of cyclohexane under magnetic stirring at room temperature, transfer 10 mL of TEOS into the above system with a pipette, and place it in a 70°C oil bath under magnetic stirring (800 rpm) for 4 hours after magnetic stirring for 30 minutes. After the reaction, the system was transferred to several 50mL centrifuge tubes, centrifuged at 3000rpm for 3min, collected the separated products, washed with industrial ethanol, centrifuged, repeated 3 times, and finally placed the products in a 55°C blast drying oven to dry. Finally, PSQ@FS microsphere powder is obtained. The morphology of the product was observed with a transmission electron microscope (TEM) (Hitachi H-7650, 100kV), such as figure 2 Shown. figure 2 These are TEM (a, b) photos of porous PSQ@FS microspheres prepared by the template me...

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Abstract

The invention provides a preparation method of an adsorption type demulsifier for oil-water separation of cleaning waste liquid. The preparation method comprises the following steps: A) using solid polymethylsilsesquioxane microspheres (PSQ) as a template, coating the surface of the template with a porous silicon dioxide layer by an emulsion method to obtain PSQ-FS microspheres; b) performing surface functionalization modification on the PSQ (at) FS microspheres by using a silane coupling agent containing C = C; and C) grafting polyether polyquaternium (PPA) on the surfaces of the modified porous PSQ (at) FS microspheres obtained in the step B) to obtain the adsorption type demulsifier microspheres (PSQ (at) FS (at) PPA) for oil-water separation of the cleaning waste liquid. Compared withthe existing adsorption type demulsifier, the porous PSQ (at) FS (at) PPA microsphere integrates demulsification and adsorption, and has the characteristics of simple formula, easiness in operation, high efficiency, energy conservation and environmental friendliness.

Description

Technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a method for preparing adsorption type demulsifier microspheres for cleaning waste liquid oil-water separation. Background technique [0002] With the development of our country's industry, the scale of the metal manufacturing industry continues to expand, and the resulting disposal of industrial waste oil and water is facing severe challenges. The grease remaining on the surface during metal processing will emulsify into the cleaning liquid during cleaning, forming an oil-in-water cleaning waste liquid. The emulsified cleaning waste liquid is difficult to break and separate due to its excellent stability. At present, the commonly used oil-water separation methods are divided into three categories: physical methods, chemical methods and biological methods, among which physical methods are more commonly used. The physical method can be further subdivided into gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40C02F1/28
CPCC02F1/281C02F1/285C02F1/288C02F1/40
Inventor 李进陈凤刘松琴张袁健朱键
Owner SOUTHEAST UNIV
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