Oil-water separation screen membrane with lead ion responsiveness and preparation method of membrane

A technology for oil-water separation ophthalmic membrane and lead ions, which is applied in separation methods, liquid separation, chemical instruments and methods, etc., to achieve the effects of simplifying sewage treatment devices, improving stability, and enhancing the performance of separation devices

Active Publication Date: 2014-12-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents only involve part of the field of responsive oil-water separation, and there is no relevant report on ions, especially lead ions.

Method used

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  • Oil-water separation screen membrane with lead ion responsiveness and preparation method of membrane
  • Oil-water separation screen membrane with lead ion responsiveness and preparation method of membrane
  • Oil-water separation screen membrane with lead ion responsiveness and preparation method of membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1, preparation of responsive oil-water separation omentum of hydrophilic and oleophobic

[0044] (1) Soak the 1000-mesh stainless steel mesh in a mixed solution of acetone and ethanol with a volume ratio of 1:1 for 30 minutes, and then dry it with hot air after cleaning;

[0045] (2) At room temperature, add 60mL of water and 0.24g of trishydroxymethylaminomethane to a 100mL beaker, stir evenly, drop hydrochloric acid solution to adjust the pH to 8.5, and obtain a mixed buffer solution (TRIS-HCl buffer solution );

[0046] (3) Add 0.12 g of dopamine hydrochloride to the mixed buffer solution obtained in step (2) to obtain a mixed solution. In the mixed solution, the mass percentage of dopamine hydrochloride is 0.20%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;

[0047] (4) Immerse the dried stainless steel mesh in step (1) in the mixed solution obtained in step (3), place it for 72 hours, take it out and rinse it with deionized water, and ...

Embodiment 2

[0056] Example 2, preparation of responsive oil-water separation omentum of hydrophilic and oleophobic

[0057] (1) Immerse the 400-mesh copper mesh in a mixed solution of acetone and ethanol with a volume ratio of 1:1 and ultrasonicate for 30 minutes, and then dry it with hot air after cleaning;

[0058] (2) At room temperature, add 60 mL of water and 0.24 g of Tris to a 100 mL beaker, stir evenly, drop in hydrochloric acid solution to adjust the pH to 8.5, and obtain a mixed buffer solution;

[0059] (3) Add 0.36 g of dopamine hydrochloride to the mixed buffer solution obtained in step (2) to obtain a mixed solution. In the mixed solution, the mass percentage of dopamine hydrochloride is 0.60%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;

[0060] (4) Immerse the dried copper mesh in step (1) in the mixed solution obtained in step (3), place it for 48 hours, take it out and rinse it with deionized water, and let it dry naturally;

[0061] (5) At room ...

Embodiment 3

[0067] Example 3, preparation of responsive oil-water separation omentum of hydrophilic and oleophobic

[0068] (1) Soak the 1000-mesh aluminum alloy mesh in a mixed solution of acetone and ethanol with a volume ratio of 1:1 and ultrasonically clean it for 30 minutes, and dry it with hot air after cleaning;

[0069] (2) At room temperature, add 60 mL of water and 0.24 g of Tris to a 100 mL beaker, stir evenly, drop in hydrochloric acid solution to adjust the pH to 8.5, and obtain a mixed buffer solution;

[0070] (3) Add 0.36 g of dopamine hydrochloride to the mixed buffer solution obtained in step (2) to obtain a mixed solution. In the mixed solution, the mass percentage of dopamine hydrochloride is 0.60%, and the mass percentage of trishydroxymethylaminomethane is 0.40%;

[0071] (4) Immerse the aluminum alloy mesh dried in step (1) in the mixed solution obtained in step (3), place it for 72 hours, take it out and rinse it with deionized water, and dry it naturally;

[007...

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Abstract

The invention discloses an oil-water separation screen membrane with lead ion responsiveness and a preparation method of the membrane. The oil-water separation screen membrane comprises the following steps: (1) mixing 3-Hydroxytyramine hydrochloride and a buffering solution with the pH valve being 8.0-12.0 to obtain a mixed solution; (2) soaking the screen membrane with the mixed solution; and (3) dissolving a mercaptan compound and an alkaline medium in water to obtain turbid liquid, and soaking the screen membrane taken in the step (2) with the turbid liquid, thus obtaining the oil-water separation screen membrane with super hydrophilicity / hydrophobicity and lead ion responsiveness. The oil-water separation screen membrane disclosed by the invention can be used for treating sewage containing oil and lead ions. Because of lead ion responsiveness, the oil-water separation screen membrane can realize high oil-water separation efficiency and speed, and can also be used for monitoring lead ions, thus enhancing the performance of a separation device, and simplifying a sewage treating device; the screen membrane is non-toxic and harmless, environmentally friendly, high in stability, and can be used for wide-range preparation.

Description

technical field [0001] The invention belongs to the field of surface modification of solid materials, and in particular relates to an oil-water separation mesh with lead ion responsiveness and a preparation method thereof. Background technique [0002] Environmental pollution is a global problem accompanied by the rapid development of modern industrial society. Industrial production will discharge a large amount of complex sewage containing heavy metals and oily pollution. Therefore, efficient treatment, separation and recovery of oily sewage has become an urgent problem to be solved. At present, the use of special wettable surface materials for oil-water separation has become a research hotspot in material science. The heavy metals that may exist in oily sewage will have a serious impact on the entire sewage treatment system. [0003] For the monitoring of heavy metal ions in sewage, very sophisticated instruments are often required. For example, the monitoring process of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 冯琳许亮鑫刘娜曹莹泽卢飞陈雨宁张小勇危岩
Owner TSINGHUA UNIV
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