Carbonic isolating membrane, preparation method and application thereof

A technology of isolation membrane and composite membrane, which is applied in the field of carbon-containing isolation membrane and its preparation, can solve the problems of high energy consumption, high cost, and large investment in seawater desalination technology, and achieve the effect of high mechanical properties and high efficiency

Inactive Publication Date: 2016-11-16
镇江市丹徒区硕源材料科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Chinese invention patent 103553167A proposes a solar evaporation seawater desalination device to solve the existing seawater desalination technology's problems of large investment, high cost, high energy consumption, high requirements for seawater pretreatment, and heavy dependence on fossils and electric energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Preparation of isolation membrane

[0027] 1) The aqueous solution of graphene oxide, CeO 2 The aqueous solution of graphene oxide is uniformly mixed; the volume mass concentration of the aqueous solution of graphene oxide is 50mg / L, CeO 2 The volume concentration of aqueous solution is 10mg / L, graphene oxide, CeO 2 The mass ratio of is 1:0.15;

[0028] 2) Based on the PP microporous filter membrane with an average pore size of 0.6 microns, graphene oxide, CeO 2 The mixed solution of the mixed solution is dehydrated under negative pressure, and then stacked and self-assembled into a carbon-containing composite layer on the microporous membrane substrate; in the process of suction filtration, another layer of PE microporous membrane with an average pore size of 3.7 microns is coated on the On the carbon-containing composite layer, a composite film with a sandwich structure is formed;

[0029] 3) Dry the sandwich-structured composite film at 40°C for 4 h...

Embodiment 2

[0031] Embodiment 2: the preparation of isolation film

[0032] 1) The aqueous solution of graphene oxide, CeO 2 The aqueous solution of graphene oxide is uniformly mixed; the volume mass concentration of the aqueous solution of graphene oxide is 5mg / L, CeO 2 The volume concentration of aqueous solution is 5mg / L, graphene oxide, CeO 2 The mass ratio is 1:0.2;

[0033] 2) Based on the alumina porous membrane with an average pore size of 0.01 microns, graphene oxide, CeO 2 The solution is dehydrated under negative pressure, and then stacked and self-assembled on the microporous membrane substrate to form a carbon-containing composite layer; during the suction filtration process, another layer of PP microporous filter membrane with an average pore size of 0.05 microns is coated on a carbon-containing composite layer. On the composite layer, a composite membrane with a sandwich structure is formed;

[0034] 3) Dry the sandwich-structured composite film at 80°C for 14 hours;

...

Embodiment 3

[0037] Embodiment 3: the preparation of isolation film

[0038] 1) The aqueous solution of graphene oxide, CeO 2 The aqueous solution is uniformly mixed; the aqueous solution volume concentration of graphene oxide is 25mg / L, CeO 2 The volume concentration of aqueous solution is 20mg / L, graphene oxide, CeO 2 The mass ratio is 1:0.2;

[0039] 2) Based on the PE microporous filter membrane with an average pore size of 0.32 microns, graphene oxide, CeO 2 The mixed solution of the mixed solution is dehydrated under negative pressure, and then stacked and self-assembled into a carbon-containing composite layer on the microporous membrane substrate; in the process of suction filtration, another layer of PE microporous membrane with an average pore size of 6.8 microns is coated on the On the carbon-containing composite layer, a composite film with a sandwich structure is formed;

[0040] 3) Dry the sandwich-structured composite film at 60°C for 14 hours;

[0041] 4) By UV light irr...

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Abstract

The invention discloses a carbon-containing isolation membrane. The composite membrane is sequentially composed of three layers: a microporous filter membrane, a carbon-containing composite layer and a microporous filter membrane. The pore diameter of the microporous filter membrane is 10 nm to 100 μm. The material of the porous filter membrane is polymer, metal or oxide, and the carbon-containing composite layer is composed of partially reduced graphene oxide CeO 2 . The composite membrane of the invention is mainly used for isolating water molecules and various ions in water, can block salt ions in water, and allow water molecules to pass through, and can be used in the field of sewage treatment. The invention has high desalination efficiency, and the removal rate is above 99%.

Description

technical field [0001] The invention relates to the field of ion separation, in particular to a carbon-containing isolation membrane and its preparation method and application. Background technique [0002] With the development of industrial and agricultural production, water pollution has become a serious problem. How to remove various ions in water, especially polluting ions, has become an important issue. [0003] Chinese invention patent 103553167A proposes a solar evaporative seawater desalination device to solve the existing seawater desalination technology's problems of large investment, high cost, high energy consumption, high requirements for seawater pretreatment, and heavy dependence on fossil and electric energy. The hydrophobic membrane of the invention is sealed and covered on the membrane skeleton, the seawater storage tank is arranged at the lower end of the hydrophobic membrane, the seawater inlet pipe is installed at the lower part of the hydrophobic membra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/12B01D67/00C02F1/44C02F103/08
CPCY02A20/131Y02W10/37B01D71/024B01D67/0079B01D69/12B01D2323/345B01D2325/24C02F1/44C02F2103/08
Inventor 不公告发明人
Owner 镇江市丹徒区硕源材料科技有限公司
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