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Method for modifying modified ceramic microfiltration membrane by adopting graphite oxide

A ceramic microfiltration, modification and modification technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of complex process, high manufacturing cost, and difficulty in performance and separation efficiency. Simple process, low cost, good separation effect

Inactive Publication Date: 2013-02-06
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the rapid development of the application of ceramic filter membranes, the existing modification technology still cannot solve the existing problems well. Not only the performance and separation efficiency are difficult to meet the requirements, but also the process is complicated and the manufacturing cost is high.

Method used

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  • Method for modifying modified ceramic microfiltration membrane by adopting graphite oxide
  • Method for modifying modified ceramic microfiltration membrane by adopting graphite oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, a method for modifying a modified ceramic microfiltration membrane using graphene oxide, such as figure 1 As shown, the steps are as follows:

[0019] (1) Preparation of modified solution

[0020] Using flake graphite as raw material, the graphene oxide dispersion aqueous solution was synthesized by the Staudenmaier method; through cleaning, separation, and ultrasonic pulverization, a graphene oxide dispersion with a particle size of 60nm, a solid content of the solution of 0.05wt%, and a uniform and stable dispersion was obtained. aqueous solution;

[0021] (2) Modification and modification treatment

[0022] Put the alumina ceramic microfiltration membrane in the reaction kettle and completely immerse it in the graphene oxide dispersion aqueous solution, adopt the method of vacuum impregnation coating, that is, vacuumize after sealing, and keep it for 1 hour after reaching the vacuum degree of -0.8bar. The filter membrane is modified by graphene...

Embodiment 2

[0026] In this embodiment, a method for modifying a modified ceramic microfiltration membrane using graphene oxide, such as figure 1 As shown, the steps are as follows:

[0027] (1) Preparation of modified solution

[0028] Using expandable graphite as raw material, Brodie method is used to synthesize and prepare graphene oxide dispersed aqueous solution; through cleaning, separation and ultrasonic pulverization, graphene oxide particle size is 80nm, solution solid content is 0.05wt%, and the dispersion is uniform and stable. dispersed aqueous solution;

[0029] (2) Modification and modification treatment

[0030] Put the titanium oxide ceramic microfiltration membrane in the reaction kettle and completely immerse it in the graphene oxide dispersion aqueous solution, adopt the method of vacuum impregnation coating, that is, vacuumize after sealing, and keep it for 1.5h after reaching the vacuum degree of -0.8bar. The filter membrane is modified by graphene oxide;

[0031] ...

Embodiment 3

[0034] In this embodiment, a method for modifying a modified ceramic microfiltration membrane using graphene oxide, such as figure 1 As shown, the steps are as follows:

[0035] (1) Preparation of modified solution

[0036] Using microcrystalline graphite as raw material, the Hummers method is used to synthesize and prepare graphene oxide dispersed aqueous solution; through cleaning, separation and ultrasonic pulverization, graphene oxide particle size is 50nm, solution solid content is 0.02wt%, and the dispersion is uniform and stable. dispersed aqueous solution;

[0037] (2) Modification and modification treatment

[0038] Put the zirconia ceramic microfiltration membrane in the reaction kettle and completely immerse it in the graphene oxide dispersion aqueous solution, adopt the method of vacuum impregnation coating, that is, vacuumize after sealing, and keep it for 2 hours after reaching the vacuum degree of -0.6bar. The filter membrane is modified by graphene oxide;

...

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Abstract

The invention discloses a method for modifying a modified ceramic microfiltration membrane by adopting graphite oxide, comprising the steps of preparing a modified solution, namely a graphite oxide dispersed water solution, immersing and coating a ceramic microfiltration membrane in vacuum and carrying out drying treatment to prepare the graphite oxide modified ceramic microfiltration membrane. According to the method, the separation efficiency of the ceramic microfiltration membrane is obviously improved and the acid and alkali resisting performance is effectively improved, so that good separation effect is obtained, and the service life of the ceramic microfiltration membrane is prolonged. Furthermore, the method has the advantages of simple process, low cost, green environmental friendliness and easily-controlled operation condition, and is good for being further popularized and applied.

Description

technical field [0001] The invention relates to the technical field of functional ceramic materials, in particular to a method for modifying ceramic microfiltration membranes. Background technique [0002] Compared with other separation processes, membrane separation is a relatively simple separation process with low energy consumption. Membrane separation is achieved through membrane modules, the core of which is the filter membrane. Compared with organic membranes, ceramic filter membranes have the advantages of good thermal and chemical stability, high mechanical strength, easy regeneration, easy cleaning, and easy regulation. , petrochemical (hydrogenation, dehydrogenation), biotechnology (high temperature sterilization), environmental engineering (such as purification of automobile exhaust) and new energy (separation of hydrogen) and other fields have a wide range of application prospects, especially in areas involving high temperature, high pressure and corrosion It ...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D67/00B01D69/02
Inventor 周健儿胡学兵于云汪永清常启兵张小珍梁健宋力昕
Owner JINGDEZHEN CERAMIC INSTITUTE
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