Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Thermal stable and super-hydrophobic ceramic-carbon nanotube composite membrane and application of membrane distillation water treatment thereof

A carbon nanotube composite and composite membrane technology, applied in water/sewage treatment, water/sewage treatment equipment, water/sludge/sewage treatment, etc., can solve secondary pollution, membrane structure and membrane performance attenuation, shedding, etc. Problems, to achieve the effect of chemical corrosion resistance mechanical strength, good thermal stability, high mechanical strength

Active Publication Date: 2017-08-29
DALIAN UNIV OF TECH
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it is necessary to oxidize the carbon nanotubes in the process of carbon nanotube polymer film formation to improve their uniform dispersion in the polymer film, which reduces the hydrophobicity of the carbon nanotubes themselves, so the prepared polymer -The carbon nanotube membrane does not give full play to the hydrophobic characteristics of carbon nanotubes, and its membrane distillation performance is not ideal
For the buckypaper membrane, although the carbon nanotubes are interlaced to form a developed high-porosity structure, the carbon nanotubes are loaded on the carrier through filtration, so the combination between the carbon nanotubes and the carrier is not strong, and it is easy to apply During the process, it will fall off, causing problems such as membrane structure and membrane performance attenuation and secondary pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermal stable and super-hydrophobic ceramic-carbon nanotube composite membrane and application of membrane distillation water treatment thereof
  • Thermal stable and super-hydrophobic ceramic-carbon nanotube composite membrane and application of membrane distillation water treatment thereof
  • Thermal stable and super-hydrophobic ceramic-carbon nanotube composite membrane and application of membrane distillation water treatment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 Preparation of composite film partially covered by carbon nanotubes

[0045] Using the spinel hollow fiber membrane as a carrier to prepare a composite membrane partially covered by carbon nanotubes, the steps are:

[0046] In the first step, the spinel hollow fiber ceramic membrane (see figure 1 ) Wash and soak with absolute ethanol for 10 minutes, then rinse with pure water, and dry at 60°C for 1 hour to obtain the treated carrier;

[0047] In the second step, the Ni(NO 3 ) 2 Prepared into a solution of 30% mass concentration, Ni(NO 3 ) 2 The solution was coated on the treated carrier, dried at 100°C for 2h, and then baked in a muffle furnace at 500°C for 2h. Through the analysis of X-ray diffractometer (XRD), it is concluded that the spinel hollow fiber membrane loaded with NiO catalyst is obtained in this step.

[0048] In the third step, the spinel hollow fiber membrane loaded with NiO catalyst is placed in the quartz reaction tube, and N2 and H ...

Embodiment 2

[0050] Embodiment 2 Preparation of composite film partially covered by carbon nanotubes

[0051] Using spinel hollow fiber membrane as a carrier, changing the CVD reaction time to prepare a composite membrane partially covered by carbon nanotubes, the steps are:

[0052] In the first step, the spinel hollow fiber ceramic membrane used as the carrier was washed and soaked with absolute ethanol for 10 minutes, then rinsed with pure water, and dried at 60°C for 1 hour to obtain the treated carrier;

[0053] In the second step, the Ni(NO 3 ) 2 Prepared into a solution of 35% mass concentration, Ni(NO 3 ) 2 The solution was coated on the treated carrier, dried at 100°C for 2h, and then baked in a muffle furnace at 500°C for 2h.

[0054] In the third step, the spinel hollow fiber membrane loaded with NiO catalyst is placed in the quartz reaction tube, and N 2 and H 2 (The flow rate is 25ml / min) For the spinel hollow fiber membrane loaded with NiO catalyst, reduce the catalyst ...

Embodiment 3

[0056] Embodiment 3 Preparation of composite membrane fully covered by carbon nanotubes

[0057] Using the spinel hollow fiber membrane as a carrier to prepare a composite membrane completely covered by carbon nanotubes, the steps are:

[0058] In the first step, the spinel hollow fiber ceramic membrane used as the carrier was washed and soaked with absolute ethanol for 10 minutes, then rinsed with pure water, and dried at 60°C for 1 hour to obtain the treated carrier;

[0059] In the second step, the Ni(NO 3 ) 2 Prepared into a solution of 30% mass concentration, Ni(NO 3 ) 2 The solution was coated on the treated carrier, dried at 100°C for 2h, and then baked in a muffle furnace at 550°C for 2h.

[0060] In the third step, the spinel hollow fiber membrane loaded with NiO catalyst is placed in the quartz reaction tube, and N 2 and H 2 (The flow rate is 20ml / min) For the spinel hollow fiber membrane loaded with NiO catalyst, reduce the catalyst at 500°C for 1h, then raise...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a thermal stable and super-hydrophobic ceramic-carbon nanotube composite membrane and application of membrane distillation water treatment thereof, and belongs to the technical field of inorganic membranes. The composite membrane is prepared by the following steps of adopting a chemical vapor deposition method, using a ceramic hollow fiber membrane as a carrier, changing the different preparation conditions, such as a loading amount of a catalyst, reaction temperature and reaction time, and controlling the structure, loading amount and load state of the carbon nanotube, so as to obtain the ceramic-carbon nanotube hollow fiber composite membrane with different structures and properties. The composite membrane has the advantages that by regulating and optimizing the preparation conditions, the thermal stable and super-hydrophobic composite membrane with a carbon nanotube complete covering structure is obtained; the seawater freshening, high-salt wastewater zero drainage, and other wastewater high-efficiency treatment, such as electroplating heavy metal wastewater, dyeing and printing wastewater and antibiotic wastewater, can be realized via the composite membrane; and the good membrane distillation property is realized.

Description

technical field [0001] The invention relates to a thermally stable, superhydrophobic ceramic-carbon nanotube composite membrane and its application in distilled water treatment, belonging to the technical field of inorganic membranes. Background technique [0002] With the development of the global economy and the explosive growth of the population, the demand for water resources continues to increase. China's per capita fresh water is only 1 / 4 of the world's, and it is listed as one of the 13 most water-poor countries in the world. Usable fresh water resources only account for 7 / 100,000 of the earth's water resources, while seawater accounts for 97.3%. Therefore, desalination of seawater and picrine is an important choice for meeting industrial and domestic water needs at present and in the future. At the same time, industrial high-salt wastewater (wastewater with a total salt content of at least 1%) from industrial processes such as chemical industry, metallurgy, electrop...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D71/02B01D69/12B01D69/02B01D67/00B01D61/36C02F1/44C02F1/469C02F103/08
CPCB01D61/364B01D67/0072B01D69/02B01D69/12B01D71/024B01D2325/22B01D2325/38C02F1/447C02F1/469C02F2103/08C02F2201/46115Y02A20/131
Inventor 董应超马丽宁朱丽司一然杨凤林
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com