Recycling method of amphiphilic surface-active pollutants in water

Patent metadata

Field	Value
Publication number	US-11104589-B2
Application number	US-201916521118-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Nov 9, 2018
Publication date	Aug 31, 2021
Grant date	Aug 31, 2021

Abstract

The present disclosure provides a recycling method of amphiphilic surface-active pollutants in water, comprising: performing a polymerization reaction by illumination treatment on the amphiphilic surface-active pollutants in water to form a polymerization product; performing self-assembly on the polymerization product for aggregation to form a fluorescent material, and performing separation to obtain a recycled product. Through treatment of the amphiphilic surface-active pollutants by illumination, the present disclosure can realize the recycled utilization of the amphiphilic pollutants in the wastewater by one step of reaction, so that the amphiphilic surface-active pollutants can be converted into usable fluorescent materials, and the biological toxicity is greatly reduced. The obtained fluorescent material can be further used in the fields such as biological imaging as a recycled product, realizes detoxification of the pollutants and efficient conversion of organic carbon resources at the same time, provides a novel strategy for wastewater treatment and resource conversion, and achieves a win-win situation for economic benefits and environmental friendliness in the field of amphipathic organic pollution treatment and has a good application prospect.

First claim

What is claimed is:

1. A recycling method of amphiphilic surface-active pollutants in water, comprising: performing a polymerization reaction by illumination treatment on the amphiphilic surface-active pollutants in water to form a polymerization product; performing self-assembly on the polymerization product for aggregation to form a fluorescent material, and performing separation to obtain a recycled product.

2. The recycling method according to claim 1 , wherein the wavelength for the illumination is 100 nm-1200 nm.

3. The recycling method according to claim 1 , wherein the amphiphilic surface-active pollutants are selected from the group consisting of an anionic surfactant, a cationic surfactant, a nonionic surfactant, and a combination of at least two select therefrom.

4. The recycling method according to claim 1 , wherein in the water, the volume ratio of the amphiphilic surface-active pollutants to the water is 0.0001%-99.9%.

5. The recycling method according to claim 3 , wherein the anionic surfactant is selected from the group consisting of sodium dodecyl benzene sulfonate, sodium alcohol ether sulfate, ammonium alcohol ether sulfate, primary alcohol ethoxylate, sodium lauryl sulfate, olefin sulfonate, perfluorooctane sulfonate, and a combination of at least two selected therefrom.

6. The recycling method according to claim 3 , wherein the cationic surfactant comprises an alkyl imidazoline surfactant and/or a quaternary ammonium surfactant.

7. The recycling method according to claim 3 , wherein the nonionic surfactant is selected from the group consisting of alkylphenol ethoxylates, C 1 -C 30 saturated fatty acid, fatty alcohol, fatty aldehyde and fatty amine, C 1 -C 30 unsaturated fatty acid, fatty alcohol, fatty aldehyde and fatty amine, phthalate, and a combination of at least two selected therefrom.

8. The recycling method according to claim 1 , wherein the illumination time is 0.5 h-48 h.

9. The recycling method according to claim 1 , wherein the polymerization reaction further comprises: adding a photosensitizer to the water.

10. The recycling method according to claim 1 , wherein the polymerization reaction is carried out under stirring.

11. The recycling method according to claim 10 , wherein the stirring rate is 10 r/min-300 r/min.

12. The recycling method according to claim 1 , wherein the pressure of self-assembly is selected from the group consisting of normal pressure, low pressure and high pressure.

13. The recycling method according to claim 12 , wherein the low pressure has a pressure range of 0-−0.1 MPa.

14. The recycling method according to claim 12 , wherein the high pressure has a pressure range of 2-50 MPa.

15. The recycling method according to claim 1 , wherein the temperature of self-assembly is 10-200° C.

16. The recycling method according to claim 1 , wherein the self-assembly is conducted under an atmosphere selected from the group consisting of nitrogen gas, oxygen gas, argon gas, ozone gas, helium gas, neon gas and air.

17. The recycling method according to claim 1 , wherein the self-assembly is conducted under normal pressure, a temperature of 10° C.-50° C. and air atmosphere.

18. The recycling method according to claim 1 , wherein the means of the separation is selected from the group consisting of extraction, chromatography, gel chromatography, physical standing, and a combination of at least two selected therefrom.

19. The recycling method according to claim 1 , wherein the means of the separation is physical standing; the time of physical standing is 2-10 days.

Assignees

• Inst Process Eng Cas

Inventors

• Cao Hongbin
• Zhao He
• Dai Qin
• Sun Shanshan

Classifications

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C09K11/65 Primary

  containing carbon (in organic compounds C09K11/06) · CPC title

• Y02W10/37

  using solar energy · CPC title

• C02F2001/007

  Processes including a sedimentation step · CPC title

• C02F1/26

  by extraction · CPC title