Preparation method of magnetic graphene oxide demulsifying agent

A graphene demulsifier and oxide stone technology, applied in chemical instruments and methods, separation methods, special compound water treatment, etc., can solve problems such as complex processes and cumbersome steps, and achieve stable physical and chemical properties, easy to obtain raw materials, and avoidance of The effect of secondary pollution

Active Publication Date: 2016-12-14
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above patents have improved the separation of graphene oxide and the enhancement of its binding force with the substrate, there are generally problems such as complicated processes and cumbersome steps. Therefore, a simple and easy general method is sought to realize the separation of graphene oxide in oil-water emulsion separation. Applications still face major challenges

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of magnetic graphene oxide demulsifier

[0025] Dissolve 1 g of ferromagnetic powder with a particle size of 90-110 microns in a mixed solution containing 90 mL of ethanol and 10 mL of water, add 0.2 g of silane coupling agent KH550, and ultrasonically disperse for 1 hour. Add 1 g of graphene oxide powder to the mixed solution, and continue ultrasonic dispersion for 3 hours. The magnetic substance in the dispersed mixed solution is sucked out by using a magnet, washed repeatedly with water and ethanol, and then the magnetic substance is separated by a magnet. The separated magnetic substance was vacuum-dried at 45° C. for 8 hours to obtain a magnetic graphene oxide demulsifier.

[0026] (2) Application of magnetic graphene oxide demulsifier in oil-water emulsion separation

[0027] A magnetic graphene oxide suspension with a concentration of 5 mg / mL was prepared with deionized water, and ultrasonically dispersed for 1 hour to obtain a dispersion of gra...

Embodiment 2

[0030] (1) Preparation of magnetic oxide magnetic graphene oxide demulsifier

[0031] Dissolve 2 g of ferromagnetic powder with a particle size of 90-110 microns in a mixed solution containing 80 mL of ethanol and 20 mL of water, add 0.4 g of silane coupling agent KH550, and ultrasonically disperse for 2 hours. Add 2 g of graphene oxide powder to the mixed solution, and continue ultrasonic dispersion for 3 hours. The magnetic substance in the dispersed mixed solution is sucked out by a magnet, washed repeatedly with water and ethanol, and then the magnetic substance is separated by a magnet. The separated magnetic substance was vacuum-dried at 45° C. for 12 hours to obtain a magnetic graphene oxide demulsifier.

[0032] (2) Application of magnetic graphene oxide demulsifier in oil-water emulsion separation

[0033] A suspension of magnetic graphene oxide with a concentration of 5 mg / mL was prepared with deionized water, and ultrasonically dispersed for 1 hour to obtain a dispe...

Embodiment 3

[0036] (1) Preparation of magnetic graphene oxide demulsifier

[0037] Dissolve 2g of ferromagnetic powder with a particle size of 90-110 microns in a mixed solution containing 80mL of ethanol and 20mL of water, add 0.4g of silane coupling agent KH550, and ultrasonically disperse for 2 hours. Add 2 g of graphene oxide powder to the mixed solution, and continue ultrasonic dispersion for 3 hours. The magnetic substance in the dispersed mixed solution is sucked out by using a magnet, washed repeatedly with water and ethanol, and then the magnetic substance is separated by a magnet. The separated magnetic substance was vacuum-dried at 50° C. for 8 hours to obtain a magnetic graphene oxide demulsifier.

[0038] (2) Application of magnetic graphene oxide demulsifier in oil-water emulsion separation

[0039] A suspension of magnetic graphene oxide with a concentration of 5 mg / mL was prepared with deionized water, and ultrasonically dispersed for 1 hour to obtain a dispersion of mag...

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Abstract

The invention discloses a preparation method of a magnetic graphene oxide demulsifying agent. The magnetic graphene oxide demulsifying agent is prepared by taking magnet powder as a carrier and loading graphene oxide on the surface of the carrier; the use amount ratio of the magnet powder to ethanol to water to a silane coupling agent to the graphene oxide is (1g to 5g) to (70mLto 95mL) to (5mL to 30mL) to (0.2g to 1g) to (1g to 5g). In preparation and application of the magnetic graphene oxide demulsifying agent provided by the invention, a magnetic separation method can be used, and high efficiency, time saving, energy saving and environment protection are realized; the application scale and range of the graphene oxide in an oil-water emulsion separation process can be easily expanded. The raw materials for preparing the demulsifying agent are easy to obtain, low in cost, stable in physical and chemical properties and capable of being repeatedly used and secondary pollution is avoided; the demulsifying agent has huge social and economic value and a wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of a magnetic graphene oxide demulsifier, belonging to the technical field of organic-inorganic composite functional materials. Background technique [0002] Oily wastewater mainly comes from oil exploration, crude oil spills, ship ballast water, and industries such as chemical, steel, food, textile, and mechanical processing. The discharge of oily wastewater seriously pollutes water resources, making the contradiction between my country's economic and social development and the shortage and waste of water resources more prominent. Among them, emulsified oil wastewater has a large discharge volume, complex components, and high COD value, which seriously endangers the water environment and human body. healthy. The particle size of emulsified oil generally ranges from tens of nanometers to several microns, and it is difficult to remove by gravity method or centrifugal separation, and the energy consumption is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40C02F1/48
CPCC02F1/40C02F1/48C02F2101/325C02F2305/04
Inventor 唐新德胡秀颖徐静韩念凤庞来学周德杰
Owner SHANDONG JIAOTONG UNIV
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