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Adsorptive separation composite fiber film, preparation method and uses thereof

A composite fiber membrane, adsorption and separation technology, applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve the problems of secondary pollution, loss, reunion, etc.

Active Publication Date: 2016-10-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problems in the prior art, one of the purposes of the present invention is to provide an adsorption-separation composite fiber membrane, which overcomes the problem of agglomeration, loss and secondary pollution caused by nanomaterials in the process of using them alone, And the method is simple and easy to operate, green and environmental protection

Method used

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  • Adsorptive separation composite fiber film, preparation method and uses thereof
  • Adsorptive separation composite fiber film, preparation method and uses thereof
  • Adsorptive separation composite fiber film, preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] 1) Disperse commercially available cellulose fiber (CF) (1g) in water (150ml), then slowly add concentrated sulfuric acid (2ml) dropwise while stirring;

[0076] 2) Add titanyl sulfate (TiOSO) dropwise to the above fiber dispersion 4 ) (0.8ml), while continuing to stir;

[0077] 3) Heating in a water bath at 70°C for 4 hours while stirring;

[0078] 4) After the reaction is completed, cool down, and then pour the reaction solution into a suction filter funnel with a diameter of 47mm for vacuum filtration to obtain a filter cake. The filter cake was taken out and then dried in a flat plate rapid heating dryer at 40°C for 8 hours to obtain TiO 2 / CF composite fiber membrane, denoted as Insitu TiO 2 / CF.

[0079] 5) Put two pieces of TiO 2 The / CF composite fiber membrane is installed in the filter as the filter medium, and the Pb with an initial concentration of 10ppm is sucked by the pump at 2.9ml / min 2+ Solution, after flowing through the filter medium, the filtra...

Embodiment 2

[0084] 1) Disperse commercially available cellulose fibers (1g) in water (200ml), then slowly add concentrated sulfuric acid (4ml) dropwise while stirring;

[0085] 2) Add TiOSO dropwise to the above fiber dispersion 4 (2.4ml), while continuing to stir;

[0086] 3) Heating in a water bath at 90°C for 3 hours while stirring;

[0087] 4) After the reaction is completed, cool down, and then pour the reaction solution into a suction filter funnel with a diameter of 47mm for vacuum filtration to obtain a filter cake. The filter cake was taken out and then dried in a flat plate rapid heating dryer at 30°C for 12 hours to obtain TiO2 / CF composite fiber membrane, denoted as Insitu TiO 2 / CF.

[0088] 5) Put a piece of TiO 2 The / CF composite fiber membrane is installed in the filter as the filter medium, and the Pb with an initial concentration of 10ppm is sucked by the pump at 5.8ml / min 2+ Solution, after flowing through the filter medium, the filtrate is collected at different...

Embodiment 3

[0091] 1) 50mg of commercially available TiO 2 (Anatase) nanoparticles were added to 200ml of deionized water, adjusted to a pH of 3, and ultrasonically dispersed for 1 hour to obtain a uniform and stable dispersion.

[0092] 2) Immerse 1 g of cellulose fibers with negatively charged surfaces in the above dispersion liquid, and let stand for 20 minutes.

[0093] 3) Pour the above reaction solution into a suction filter funnel with a diameter of 47 mm for vacuum filtration to obtain a filter cake. The filter cake was taken out and then dried in a flat plate rapid heating dryer at 50°C for 6 hours to obtain TiO 2 / CF composite fiber membrane, denoted as Anatase / CF.

[0094] 4) Put two pieces of TiO 2 The / CF composite fiber membrane is installed in the filter as the filter medium, and the Pb with an initial concentration of 10ppm is sucked by the pump at 2.9ml / min 2+ Solution, after flowing through the filter medium, the filtrate is collected at different intervals, and the ...

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Abstract

The present invention relates to an adsorptive separation composite fiber film, a preparation method and uses thereof, wherein the composite fiber film is a nanometer particle / polymer fiber composite film. The concrete method comprises: firstly synthesizing nanometer particle / polymer fiber composite fibers, preparing into a composite fiber film, loading the film into a filter, and carrying out dynamical adsorbing and filtering to remove heavy metal ions in the water. According to the present invention, the preparation method has characteristics of simpleness, green concrete, low cost, high heavy metal waste water treatment efficiency, good selectivity and recycling, and the adsorptive separation composite fiber film can be used for purification and treatment of heavy metals in industrial and domestic wastewater.

Description

technical field [0001] The invention relates to an adsorption-separation composite fiber membrane, a preparation method and an application thereof. The composite fiber membrane can dynamically absorb and filter to remove heavy metal ions in water. Background technique [0002] With the rapid development of the economy, a large amount of industrial wastewater is discharged, and the heavy metal ions in the wastewater are migrated and enriched, causing great harm to agriculture, ecosystems and human health. For example, lead (Pb 2+ ) is a typical heavy metal pollutant, which is difficult to be degraded by microorganisms in the natural environment, and can be transferred to humans or animals through plants or crops. Long-term drinking of water containing a large amount of lead will seriously damage the hematopoietic system, nervous system and kidneys, and It can cause mental retardation and is listed as one of the priority pollutants in water bodies. [0003] Adsorption techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/62
Inventor 李艳香杨传芳
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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