Material capable of directly adsorbing and separating underwater oil and preparation method thereof

A technology for separation and treatment of underwater oil, applied in the field of water treatment, can solve the problems of stability impact, complex method and low efficiency, and achieve the effect of strong underwater stability, simple method and no noise.

Pending Publication Date: 2021-08-27
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the above proposals, when separating underwater oil, most separation methods have problems such as complex methods, low efficiency, and high energy consumption, and special wettable materials are affected by the stability of the air layer in the underwater microstructure. A material capable of directly adsorbing and separating underwater oil and its preparation method

Method used

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  • Material capable of directly adsorbing and separating underwater oil and preparation method thereof
  • Material capable of directly adsorbing and separating underwater oil and preparation method thereof
  • Material capable of directly adsorbing and separating underwater oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) The foamed nickel was ultrasonically treated with an aqueous solution of hydrochloric acid of 2mol / L for 20 minutes, then repeatedly ultrasonically cleaned with deionized water for 2 times and then dried for subsequent use; prepare 18.0mM cobalt nitrate hexahydrate, 30.0mM urea, 90.0 The ethylene glycol / water solution of mM ammonium fluoride, wherein the volume ratio of ethylene glycol and water is 1:3; Put the foamed nickel after the above-mentioned pretreatment and preparation solution into tetrafluoroethylene to be the reactor of liner, at 160 React for 16 hours under the condition of ℃, take out after the reaction; wash with deionized water and dry to obtain foamed nickel treated by hydrothermal method.

[0032] (2) prepare the ethanol / water solution of 2.0g / L dopamine and 5.0mM octadecylamine, wherein the volume ratio of ethanol and water is 1:1; Regulate pH to 8.5 with Tris-HCL; Move it into the preparation solution and react for 24 hours; after the reaction, ...

Embodiment 2

[0035] (1) The hydrochloric acid aqueous solution that foamed nickel is used mass fraction is 2mol / L carries out sonication for 20 minutes, after repeated supersonic cleaning 2 times with deionized water, dry for subsequent use; prepare 12.0mM cobalt nitrate hexahydrate, 20.0mM urea, 71.0 The ethylene glycol / water solution of mM ammonium fluoride, wherein the volume ratio of ethylene glycol and water is 1:3; Put the foamed nickel after the above-mentioned pretreatment and preparation solution into tetrafluoroethylene to be the reactor of liner, at 140 React for 24 hours under the condition of ℃, take out after the reaction; wash with deionized water, and dry to obtain foamed nickel treated by hydrothermal method.

[0036] (2) prepare the ethanol / water solution of 1.2g / L dopamine and 5.0mM octadecylamine, wherein the volume ratio of ethanol and water is 1:1; Regulate pH to 8.5 with Tris-HCL; Move it into the preparation solution and react for 24 hours; after the reaction, the n...

Embodiment 3

[0039] (1) The hydrochloric acid aqueous solution that the mass fraction is 2mol / L is carried out supersonic treatment 20 minutes to nickel foam, after repeated supersonic cleaning 2 times with deionized water, dry for subsequent use; prepare 20.0mM cobalt nitrate hexahydrate, 35.0mM urea, 98.0 The ethylene glycol / water solution of mM ammonium fluoride, wherein the volume ratio of ethylene glycol and water is 1:3; Put the foamed nickel after the above-mentioned pretreatment and preparation solution into tetrafluoroethylene as the reactor of liner, at 180 React under the condition of ℃ for 18 hours, take out after the reaction; wash with deionized water and dry to obtain foamed nickel treated by hydrothermal method.

[0040] (2) prepare the ethanol / water solution of 2.8g / L dopamine and 10.0mM octadecylamine, wherein the volume ratio of ethanol and water is 1:1; Regulate pH to 8.5 with Tris-HCL; Move it into the preparation solution and react for 24 hours; after the reaction, th...

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Abstract

The invention belongs to the field of water treatment, and particularly relates to a material capable of directly adsorbing and separating underwater oil and a preparation method of the material. The material capable of directly adsorbing underwater oil is prepared by carrying out chemical modification on foamed nickel. The preparation method comprises the following steps: preparing a cobalt oxide micron structure on foamed nickel by a hydrothermal method, modifying by using dopamine-octadecylamine to obtain micro-nano composite structure super-hydrophobic foamed nickel, and finally carrying out hydrophilic modification treatment on the top end of the micro structure by using dopamine. According to the super-hydrophobic foamed nickel, the underwater stability of an air layer in a microstructure groove is improved, and then underwater oil can be directly adsorbed and separated. Compared with a traditional water treatment product, the device has the advantages of high efficiency, no noise, no complex equipment, low energy consumption, no secondary pollution and the like, and is particularly suitable for direct adsorption and separation treatment of underwater oil.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a material capable of directly absorbing and separating underwater oil and a preparation method thereof. Background technique [0002] With the development of the petrochemical industry, the discharge of industrial oily wastewater has increased rapidly worldwide, which has caused serious environmental and ecological problems. Oily substances usually exist in three states in wastewater: oil particles dispersed in wastewater are relatively large, with a particle size greater than 100 microns, accounting for 60-80% of the total oil in petroleum wastewater; oil particles dispersed in wastewater Small in emulsified state; oil in dissolved state with a solubility of about 5-15mg / L. At present, oily wastewater usually uses grease traps to recover slick oil or heavy oil, and oil-water separation is achieved by methods such as gravity method, flotation method, adsorption method, membrane s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28C02F1/28C02F1/40B01J20/30
CPCB01J20/0203B01J20/28011B01J20/28045C02F1/281C02F1/40
Inventor 金美花李沛张怀猛
Owner DALIAN MARITIME UNIVERSITY
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