Method for preparing oil-water separation membrane from waste cigarette filter tip and application in oil-water separation

An oil-water separation membrane and oil-water separation technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve problems such as health and ecological environment hazards, can not be degraded by the environment, and achieve high emulsion separation flux, separation high efficiency effect

Inactive Publication Date: 2019-01-08
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because discarded cigarette butts contain a large amount of toxic substances and cannot be degraded by the environment, they have unexpected harm to human health and the ecological environment

Method used

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  • Method for preparing oil-water separation membrane from waste cigarette filter tip and application in oil-water separation
  • Method for preparing oil-water separation membrane from waste cigarette filter tip and application in oil-water separation
  • Method for preparing oil-water separation membrane from waste cigarette filter tip and application in oil-water separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Cleaning of discarded cigarette filters: Peel off the outer paper of discarded cigarette filters, wash them with hot water for several times, and soak them in distilled water for 24 hours to remove pollutants on the surface of discarded cigarette filters; then, dry them at 60 °C for 6 hours to obtain clean cigarette filters;

[0036] Preparation of electrospinning solution: Dissolve clean waste cigarette filters in a mixed solution of DMF and acetone (the volume ratio of DMF and acetone is 1:0.3) to prepare an electrospinning solution with a concentration of 12.4 wt%.

[0037]Preparation of oil-water separation membrane: Using 300-mesh stainless steel wire mesh as the receiver (cleaned with acetone, ethanol, and deionized water, respectively), the oil-water separation membrane was prepared by electrospinning, marked as CFNM-300. During the spinning process, the voltage was maintained at 17 kV; the distance between the tip of the needle and the stainless steel wire mesh ...

Embodiment 2

[0040] The cleaning of discarded cigarette filter tip: with embodiment 1;

[0041] Preparation of electrospinning solution: Dissolve the cleaned waste cigarette filter in a mixed solution of DMF and acetone (the volume ratio of DMF and acetone is 1::0.4) to prepare an electrospinning solution with a concentration of 13 wt%.

[0042] Preparation of oil-water separation membrane: Using 2300-mesh stainless steel wire mesh as the receiver (cleaned with acetone, ethanol, and deionized water, respectively), the oil-water separation membrane was prepared by electrospinning, marked as CFNM-2300. The voltage was kept at 16 kV during the spinning process; the distance between the tip of the needle and the stainless steel wire mesh was 16 cm. The speed at which the pump drives the spinning solution is set to 0.8mL h -1 ; The temperature is controlled at 25 °C and the humidity is about 40%.

[0043] The oil-water separation application effect of the oil-water separation membrane CFNM-23...

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Abstract

The invention discloses a method for preparing an oil-water separation membrane from a waste cigarette filter tip. The method for preparing the oil-water separation membrane from the waste cigarette filter tip comprises the steps of dissolving the cleanly washed waste cigarette filter tip in a mixed solution of N, N-dimethyl formamide and acetone to prepare an electrostatic spinning fluid with concentration of 12-14 wt%; and using a cleanly washed stainless steel wire net as a receiver to prepare the oil-water separation membrane by using an electrostatic spinning technology. An experiment shows that the prepared oil-water separation membrane possesses special infiltrating property of super-hydrophilicity/underwater super-oleophobicity/super-lipophilicity/super-hydrophobicity under oil, can be used for separation of multiple oil-in-water emulsions and water-in-oil emulsions and has the advantages of high separating efficiency, high cycling stability and the like. In addition, the oil-water separation membrane also shows higher emulsion separation flux; and according to the characteristics, the prepared oil-water separation membrane can be widely applied to separation of oil-water mixtures.

Description

technical field [0001] The invention relates to a method for preparing an oil-water separation membrane, in particular to a method for preparing an oil-water separation membrane by using waste cigarette filters; the invention also relates to the specific application of the oil-water separation membrane in oil-water separation, which belongs to the special wettability interface technology field. technical background [0002] In recent years, with the rapid development of social economy and the increasing number of petrochemical industries, oily wastewater and frequent oil spills are causing unprecedented harm to the normal production and life of human beings and the surrounding ecological environment. Therefore, the purification of immiscible oil-water mixtures and oil-water emulsions is an urgent problem to be solved today. In recent years, people have designed and prepared a variety of oil-water separation materials by taking advantage of the different wettability of mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/02B01D17/085
Inventor 李健李谋吉刘伟民张海军王小央
Owner NORTHWEST NORMAL UNIVERSITY
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