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A one-dimensional single-walled aluminosilicate nanotube composite forward osmosis membrane

A nanotube composite and forward osmosis membrane technology, which is applied in the field of one-dimensional single-walled aluminosilicate nanotube composite forward osmosis membranes, can solve the problems that limit the research and application of inorganic nanomaterial composite forward osmosis membranes, and achieve extended service life, The effect of improving permeability

Active Publication Date: 2020-12-15
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing research is still mainly limited to commonly used inorganic nanomaterials, such as nano-silica, nano-titanium dioxide, nano-silver, graphene oxide, and carbon nanotubes, which greatly limits the research and development of inorganic nanomaterial composite forward osmosis membranes. application

Method used

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  • A one-dimensional single-walled aluminosilicate nanotube composite forward osmosis membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this example, the polysulfone ultrafiltration membrane is used as the porous support layer, the aqueous solution of m-phenylenediamine is used as the water phase solution, and the Isopar-G solution of trimesoyl chloride is used as the oil phase solution, and the forward osmosis membrane is prepared by interfacial polymerization. .

[0019] Specific steps are as follows

[0020] Step 1: Using polysulfone ultrafiltration membrane as a porous support layer;

[0021] Step 2: configuring an aqueous phase solution, the mass percentage of m-phenylenediamine in the aqueous phase solution is 3.4%;

[0022] An oil phase solution is configured, the mass percentage of trimesoyl chloride in the oil phase solution is 0.15%, and the mass percentage of one-dimensional single-walled aluminosilicate nanotubes is 0.3%;

[0023] Step 3: Pour the aqueous phase solution on the surface of the porous support layer, and after standing for 2 minutes, remove the excess aqueous phase solution...

Embodiment 2

[0029] In this example, the polyethersulfone ultrafiltration membrane is used as the porous support layer, the aqueous solution of m-phenylenediamine is used as the water phase solution, and the Isopar-E solution of trimesoyl chloride is used as the oil phase solution, and the forward osmosis membrane is prepared by interfacial polymerization. membrane.

[0030] Specific steps are as follows

[0031] Step 1: using polyethersulfone ultrafiltration membrane as a porous support layer;

[0032] Step 2: configuring an aqueous phase solution, the mass percentage of m-phenylenediamine in the aqueous phase solution is 2%;

[0033] An oil phase solution is configured, the mass percentage of trimesoyl chloride in the oil phase solution is 0.1%, and the mass percentage of one-dimensional single-walled aluminosilicate nanotubes is 1%;

[0034] Step 3: Pour the aqueous phase solution on the surface of the porous support layer, and after standing for 2 minutes, remove the excess aqueous p...

Embodiment 3

[0040] In this example, the polysulfone ultrafiltration membrane is used as the porous support layer, the aqueous solution of o-phenylenediamine is used as the water phase solution, and the Isopar-G solution of trimesoyl chloride is used as the oil phase solution, and the forward osmosis membrane is prepared by interfacial polymerization. .

[0041] Specific steps are as follows

[0042] Step 1: Using polysulfone ultrafiltration membrane as a porous support layer;

[0043] Step 2: configuring an aqueous phase solution, the mass percentage of o-phenylenediamine in the aqueous phase solution is 3.4%;

[0044] An oil phase solution is configured, the mass percentage of trimesoyl chloride in the oil phase solution is 0.15%, and the mass percentage of one-dimensional single-walled aluminosilicate nanotubes is 0.08%;

[0045] Step 3: Pour the aqueous phase solution on the surface of the porous support layer, and after standing for 2 minutes, remove the excess aqueous phase solutio...

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Abstract

The invention discloses a one-dimensional single-walled aluminosilicate nanotube composited forward osmosis membrane. Firstly, an ultrafiltration membrane is taken as a porous support layer, a polyamine water solution as well as a polyacyl chloride and allophane nanotube mixed organic solution is added to the surface of the porous support layer sequentially, and curing treatment is performed; a product is rinsed with deionized water after being cooled to the room temperature, and the allophane nanotube composited forward osmosis membrane is obtained. According to a method, a one-dimensional single-walled aluminosilicate nanotube taken as a modifier is pre-dispersed in an oil-phase solution with interfacial polymerization, the one-dimensional single-walled aluminosilicate nanotube composited forward osmosis membrane is obtained through interfacial polymerization, and water flux of the forward osmosis membrane is increased effectively. The provided forward osmosis membrane has high waterpermeation flux and efficient selectivity.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, and in particular relates to a one-dimensional single-wall aluminosilicate nanotube composite forward osmosis membrane. Background technique [0002] In recent years, forward osmosis technology has attracted much attention as an emerging membrane separation technology. This technology uses the osmotic pressure difference between the solutions on both sides of the forward osmosis membrane as the driving force, so that water molecules can spontaneously flow from the supply liquid with high water chemical potential (low osmotic pressure side) to the draw liquid with low water chemical potential ( high osmotic pressure side) infiltration. As one of the cores of forward osmosis technology, the forward osmosis membrane is mainly composed of a thin film composite membrane, that is, a dense polyamide film layer is constructed by interfacial polymerization on the basis of a porous support lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/10B01D69/12B01D69/02B01D67/00
CPCB01D61/002B01D67/0079B01D69/02B01D69/105B01D69/12B01D71/02
Inventor 吴青芸潘叶寒施社稷唐福明王少飞顾林
Owner NINGBO UNIV