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Ion exchange membrane for reverse electrodialysis device and reverse electrodialysis device including same

A technology of cation-exchange membrane and anion-exchange membrane, applied in the field of reverse electrodialysis devices, which can solve the problems of high price of ion-exchange membranes in reverse electrodialysis systems, delay in commercialization, etc.

Active Publication Date: 2015-03-25
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the reverse electrodialysis system with the above advantages has been delayed in commercialization because of the high price of the ion-exchange membrane contained in it.

Method used

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  • Ion exchange membrane for reverse electrodialysis device and reverse electrodialysis device including same
  • Ion exchange membrane for reverse electrodialysis device and reverse electrodialysis device including same
  • Ion exchange membrane for reverse electrodialysis device and reverse electrodialysis device including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Preparation of cation exchange membrane for reverse electrodialysis device

[0107] Mix and stir the high-concentration ethylene sulfonic acid of more than 95% without water: N, N'-vinylbisacrylamide in 80:20 parts by weight, the initiator is Darocur1173 diluted to methanol in 10 parts by weight, according to the above-mentioned This initiator was mixed with 100 parts by weight of the mixed solution at a rate of 1 part by weight.

[0108] Afterwards, a polyethylene porous support with a film thickness of 25 μm, a pore size of 0.07 μm, and a pore distribution of 45% was impregnated in the above solution to fully immerse the monomer solution in the support. Immerse in a commercially available surfactant (dodecylbenzenesulfonic acid, DBSA) diluted with 0.5 to 1 part by weight of water to form a solution for 1 to 2 minutes and then dry to hydrophilize the surface of the pores, and then place the support on Between polyethylene terephthalate (PET) films and become 150mJ / ...

Embodiment 2

[0111] Preparation of reverse electrodialysis device with anion exchange membrane

[0112](Vinylbenzyl)trimethylammonium chloride, 1,3,5-triacryloylhexahydro-1,3,5-triazine, deionized water and dimethylformamide according to 1: The mixed solvent of the weight ratio of 1 is mixed and stirred with the weight ratio of 61.5:15.4:23.1, and photoinitiator is the 2-hydroxyl-2 methyl-1-phenyl-1-ketone that is diluted to methyl alcohol with 10% by weight, according to and The photoinitiator was mixed in a ratio of 1 part by weight to 100 parts by weight of the mixed solution.

[0113] Afterwards, a polyolefin-based porous support with a film thickness of 25 μm, an average pore size of 0.07 μm, and a pore distribution of 45% was impregnated in the solution, and the monomer solution was fully immersed in the support. Next, the electrolyte-impregnated membrane is placed between polyethylene terephthalate (PET) membranes and becomes 30 to 150 mJ / cm 2 irradiated with ultraviolet energy...

Embodiment 3

[0115] Preparation of the reverse electrodialysis module comprising the ion exchange membrane made in Example 1 and Example 2

[0116] The anode and cathode (10cm×10cm, effective area 0.0071m) made after graphite electrode polishing 2 ) between the anion-exchange membrane made in the above-mentioned embodiment 2 and the cation-exchange membrane made in the above-mentioned embodiment 1 are installed in isolation by a spacer, in order to ensure that the electrode rinsing solution (50mM Fe(CN) 6 3+ / 4+ Aqueous solution and 0.5M Na 2 SO 4 Aqueous solution) flow channel to fabricate a reverse electrodialysis (RED) module equipped with a woven mesh type electrode separator (thickness 200 μm m) and a silicon gasket (silicon gasket).

[0117] Preparation of Reverse Electrodialysis Module Containing Commercial Ion Exchange Membrane

[0118] The reverse electrodialysis module was fabricated in the same way as in Example 3 except that the commercial cation exchange membrane ASTO...

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Abstract

This invention relates to an ion exchange membrane for a reverse electrodialysis (RED) device, a manufacturing method thereof and a reverse electrodialysis device including the ion exchange membrane, wherein the ion exchange membrane includes a porous polymer substrate; and a polymer electrolyte incorporated into pores of the porous polymer substrate. According to this invention, cation and anion exchange membranes for a reverse electrodialysis device have superior ion conductivity and thus can minimize membrane resistance, thereby remarkably improving maximum power density of the reverse electrodialysis device, and also have high water resistance and heat resistance, making it possible to stably operate the reverse electrodialysis device.

Description

technical field [0001] The invention relates to an ion exchange membrane for a reverse electrodialysis device and a reverse electrodialysis device comprising it. Background technique [0002] In view of the possible depletion of fossil fuels such as petroleum and coal, and the global warming caused by carbon dioxide generated by the use of fossil fuels, it is urgent to develop new energy sources that can replace fossil fuels. In this regard, research and development of various new and renewable energy sources such as solar heat, biofuels, geothermal energy, and wind power are currently being carried out worldwide, but the proportion of such energy sources in the world's energy consumption is still less than 10%. [0003] Moreover, solar heat and wind power, which are powerful candidate energy sources to replace fossil fuels, are sensitive to the influence of the surrounding climate on their energy production, and the stability of their energy production is a major problem. ...

Claims

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Application Information

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IPC IPC(8): B01D61/44B01D61/46B01J39/18B01J41/12
CPCC08J5/2275C08J2323/06F03G7/00B01D61/422C02F1/4693H01M14/005C08J2400/104F03G7/005H01M8/227H01M8/1027H01M8/1044H01M8/1072H01M8/1081H01M2300/0082Y02A20/124Y02P70/50Y02E60/50F03G7/04B01D69/12H01M14/00
Inventor 崔荣祐李美顺梁台铉尹英基朴奭熹梁铉庚金韩基金台焕朴钟洙
Owner TORAY ADVANCED MATERIALS KOREA
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