Underwater oil droplet collection material and method for preparing same

An oil droplet and air technology, applied in the field of materials for collecting underwater oil droplets and its preparation, can solve the problems of easy clogging of membrane pores, high operating costs, and difficult cleaning, and achieve a simple preparation method, good function, and simple equipment Effect

Inactive Publication Date: 2011-04-27
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the membrane separation method (physical method), which uses the interception of the granular media filter bed and the mechanisms of inertial collision, sieving, surface adhesion, and coalescence, can remove oil in water, but the membrane pores are easy to block, difficult to clean, and high in operating costs. Not suitable for large-scale processing and other defects
The flotation method (physical and chemical method) has high flotation efficiency, easy operation control, and mature technology, but the operation cost is high, the floor area is large, the slick oil is difficult to handle, and there will be a lot of scum
In short, due to the limitations of subsequent treatment, recycling and economic costs, these methods are difficult to achieve satisfactory results, and it is imperative to improve conventional methods or develop new technologies for oily wastewater treatment

Method used

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  • Underwater oil droplet collection material and method for preparing same
  • Underwater oil droplet collection material and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Soak a glass sheet with a clean surface and no oil stain in a mixed solution of 30% hydrogen peroxide and concentrated sulfuric acid (3:7 in volume ratio) for 2 hours, then wash it with water for 3 times, and dry it with nitrogen.

[0033] 2) Submerge the treated glass sheet into 10mL of toluene with a water content of 1ppm, add 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane dropwise to prepare a solution with a concentration of 0.5vt%, and keep it at room temperature After closed reaction for 1 h, the glass sheet was taken out, washed with toluene, ethanol, a mixed solution of ethanol and water (volume ratio 1:1) and water, respectively, and finally put into a drying oven with a temperature of 120 ° C for 10 min to obtain Material for collecting oil droplets underwater.

[0034] SEM photographs of the surface of the material collecting underwater oil droplets are shown in figure 1 Shown; the contact angle diagram of the underwater material surface before and after c...

Embodiment 2

[0037] 1) Soak a glass sheet with a clean surface and no oil stain in a mixed solution of 30% hydrogen peroxide and concentrated sulfuric acid (3:7 in volume ratio) for 2 hours, then wash it with water for 3 times, and dry it with nitrogen.

[0038] 2) Submerge the treated glass sheet into 10mL of xylene with a water content of 5ppm, add 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane dropwise to prepare a solution with a concentration of 5vt%, and keep it at room temperature After closed reaction for 1 hour, the glass sheet was taken out, rinsed with xylene, ethanol, a mixed solution of ethanol and water (volume ratio 1:1) and water, respectively, and finally put into a drying oven with a temperature of 120°C to dry for 10 minutes. Get the material for collecting oil droplets underwater.

[0039] The contact angle between the underwater material surface and the oil droplet is 0°. The material can collect oil 9~10ml / cm each time under water 2 , the function of collecting oil dr...

Embodiment 3

[0041] 1) Soak a glass sheet with a clean surface and no oil stain in a mixed solution of 30% hydrogen peroxide and concentrated sulfuric acid (3:7 in volume ratio) for 2 hours, then wash it with water for 3 times, and dry it with nitrogen.

[0042] 2) Submerge the treated glass sheet into 10 mL of isopropanol with a water content of 0 ppm, add 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane dropwise, and prepare a solution with a concentration of 0.0001vt%. , after airtight reaction at room temperature for 1 h, take out the glass sheet, wash it with isopropanol, ethanol, a mixed solution of ethanol and water (volume ratio: 1:1) and water, and finally put it into a drying oven with a temperature of 120 ° C. After drying for 10 minutes, a material collecting underwater oil droplets was obtained.

[0043] The contact angle between the underwater material surface and the oil droplet is 0°. The material can collect oil 0.1~1ml / cm each time under water 2 , the function of collecting...

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Abstract

The invention belongs to the field of the oil absorption material and particularly relates to an underwater oil droplet collection material and a method for preparing the same. Fluorine-containing organic trichlorosilane monomers and a small quantity of water are used as raw materials, and the fluorine-containing organic trichlorosilane monomers are grafted and subjected to hydrolysis and condensation reaction on the surface of a substrate so that the surface in the micron-particle and nano-fiber interlaced three-dimensional network structure is prepared at normal temperature in one step. Underwater oil droplets spread on the surface of the underwater oil droplet collection material so that a stable oil film is formed on the surface of the underwater oil droplet collection material and oil droplets are collected. The method for preparing the underwater oil droplet collection material adopts simple equipment, has low cost, can not cause pollution to environment and can be used for rapidly preparing the underwater oil droplet collection material in a larger area at normal temperature in one step. The prepared functional film has good oil droplet collection function, and the underwater oil droplet collection material can be used repeatedly.

Description

technical field [0001] The invention belongs to the field of oil-absorbing materials, in particular to a material for collecting underwater oil droplets and a preparation method thereof. Background technique [0002] Oily wastewater is a large-volume, wide-ranging and seriously harmful pollution source, mainly from the petrochemical industry, machinery industry and marine transportation industry. If oily wastewater is not recycled, it will be discharged into rivers, lakes or bays to pollute water bodies and affect the survival of aquatic organisms. The environmental pollution caused by it has become one of the major problems affecting human life and production. [0003] The ease of oily wastewater treatment depends on the source, composition and form of the oil. Oil in oily wastewater usually exists in the form of slick oil, dispersed oil, emulsified oil and dissolved oil. The oil droplet size of slick oil is usually larger than 100 μm, which is easy to be separated from w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 金美花王静廖明义
Owner DALIAN MARITIME UNIVERSITY
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