Unlock instant, AI-driven research and patent intelligence for your innovation.

Electrically-conductive inorganic ceramic membrane material and preparation method

An inorganic ceramic membrane and membrane surface technology, applied in chemical instruments and methods, membrane, membrane technology, etc., can solve problems such as poor performance, achieve simple and convenient operation, slow down membrane fouling process, and overcome poor performance

Active Publication Date: 2018-06-29
ZHEJIANG GONGSHANG UNIVERSITY
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a conductive inorganic ceramic membrane material and a preparation method. The prepared membrane has relatively high mechanical strength, which overcomes the shortcomings of poor performance in previous studies and actual use of the membrane. The formation of the conductive membrane can combine membrane separation technology with electrochemical The combination of technical advantages improves the separation efficiency, slows down the process of membrane fouling, and makes the operation easier and more convenient

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
  • Electrically-conductive inorganic ceramic membrane material and preparation method
  • Electrically-conductive inorganic ceramic membrane material and preparation method
  • Electrically-conductive inorganic ceramic membrane material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A flat SiC ceramic membrane with a pore size of 600nm is used as a carrier to prepare a conductive inorganic ceramic membrane. The steps are:

[0040] (1) Prepare a glucose solution with a concentration of 500g / L, sonicate for 20min, pass through a 0.22μm filter membrane, and heat it to 60°C;

[0041] (2) Wash and dry the ceramic membrane, immerse it in the glucose solution, and use a stirrer to stir the water flow, and the immersion time is 24h;

[0042] (3) Take it out to dry, and carry out vacuum low-temperature coking for 24 hours at an air pressure of -0.1MPa and a temperature of 185°C;

[0043] (4) Carry out high-temperature thermal coking in a nitrogen atmosphere with a gas flow rate of 500 ml / min at a coking temperature of 800° C. for 2 hours.

[0044] Results: The surface porosity of the conductive inorganic ceramic membrane reaches 90%, and the rejection rate of bovine serum albumin with a molecular weight of 66kDa reaches about 75%, and the rejection rate of...

Embodiment 2

[0046] A flat SiC ceramic membrane with a pore size of 600nm is used as a carrier to prepare a conductive inorganic ceramic membrane. The steps are:

[0047](1) Prepare a glucose solution with a concentration of 250g / L, sonicate for 20min, pass through a 0.22μm filter membrane, and heat it to 60°C;

[0048] (2) Wash and dry the ceramic membrane, immerse it in the glucose solution, and use a stirrer to stir the water flow, and the immersion time is 24h;

[0049] (3) Take it out to dry, and carry out vacuum low-temperature coking for 24 hours at an air pressure of -0.1MPa and a temperature of 250°C;

[0050] (4) Carry out high-temperature thermal coking in a nitrogen atmosphere with a gas flow rate of 500 ml / min at a coking temperature of 1000° C. for 2 hours.

[0051] Results: The surface porosity of the conductive inorganic ceramic membrane reaches 80%, and the rejection rate of bovine serum albumin with a molecular weight of 66kDa reaches about 65%, and the rejection rate of...

Embodiment 3

[0053] A flat SiC ceramic membrane with a pore size of 600nm is used as a carrier to prepare a conductive inorganic ceramic membrane. The steps are:

[0054] (1) Prepare a glucose solution with a concentration of 50g / L, sonicate for 20min, pass through a 0.22μm filter membrane, and heat it to 60°C;

[0055] (2) Wash and dry the ceramic membrane, immerse it in the glucose solution, and use a stirrer to stir the water flow, and the immersion time is 24h;

[0056] (3) Take it out and dry it in the air, and carry out vacuum low-temperature coking for 24 hours at a pressure of -0.1MPa and a temperature of 200°C;

[0057] (4) Carry out high-temperature thermal coking in a nitrogen atmosphere with a gas flow rate of 500 ml / min at a coking temperature of 1200° C. for 3 hours.

[0058] Results: The surface porosity of the conductive inorganic ceramic membrane reached 50%, the rejection rate of bovine serum albumin with a molecular weight of 66kDa reached about 40%, and the rejection r...

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an electrically-conductive inorganic ceramic membrane material and a preparation method. The preparation method comprises the following steps: (1) cleaning the surface of an inorganic ceramic membrane, drying, and soaking in a small molecular organic carbon solution; (2) taking out the inorganic ceramic membrane, then air drying, and vacuum coking at a low temperature undera negative pressure condition; and (3) thermally coking the low-temperature coked inorganic ceramic membrane in an inertial atmosphere at a high temperature, naturally cooling to room temperature, thus obtaining the electrically-conductive inorganic ceramic membrane. According to the electrically-conductive inorganic ceramic membrane prepared by the invention, a matrix structure of a porous medium is formed by the inorganic ceramic membrane, the mechanical strength is ensured, an average aperture is 0.5 to 10 micrometers, by confirming the realization of a filtration process, the electrically-conductive material is thermally loaded in situ on the surface, and an electrically-conductive circuit is formed on the surface of the membrane to ensure the electrochemical process on the surface ofthe membrane.

Description

technical field [0001] The invention relates to a preparation method of a conductive inorganic ceramic membrane, in particular to an inorganic ceramic membrane material loaded with carbon in situ and a preparation method thereof, belonging to the field of urban sewage treatment. Background technique [0002] Membrane Bioreactor (MBR for short) is a new type of efficient sewage treatment and reuse device that can combine biodegradation and membrane high-efficiency separation technology. It is a newly developed sewage treatment and reuse technology in recent years. An important component, it is widely used in the purification of urban water and the treatment of domestic sewage and industrial wastewater. [0003] Compared with the traditional activated sludge sewage treatment process, it has the advantages of small footprint, high volume load, and good effluent quality. It is considered to be one of the promising sewage treatment and reuse technologies. However, the practical ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/02B01D67/00C02F1/44C02F1/46
CPCB01D67/0067B01D69/02B01D71/02B01D2325/26C02F1/44C02F1/46
Inventor 冯华军黄晶晶汪美贞徐颖峰沈东升陈书鑫汤晨怡郭乔琪
Owner ZHEJIANG GONGSHANG UNIVERSITY