Ion exchange membrane for flow electrode capacitive deionization device and flow electrode capacitive deionization device including it
A technology of capacitive deionization and cation exchange membrane, used in ion exchange, cation exchange, ion exchange water/sewage treatment, etc.
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Embodiment 1
[0114] Preparation of cation exchange membrane for flow electrode capacitive deionization device
[0115] 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.
[0116] 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 ...
Embodiment 2
[0119] Preparation of Anion Exchange Membrane for Flow Electrode Capacitance Deionization Device
[0120] (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.
[0121] 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 ultr...
Embodiment 3
[0123] Preparation of the flow electrode capacitive deionization basic module comprising the ion exchange membrane made in Example 1 and Example 2
[0124] The following flow electrode capacitive deionization module was produced, which has a rectangular anode current collector and cathode current collector (Graphite, 94mm×56㎜, effective area of 12cm 2 ) between the anion-exchange membrane produced in the above-mentioned embodiment 2 and the cation-exchange membrane produced in the above-mentioned embodiment 1 are installed in isolation with a spacer. Furthermore, a flow electrode suitable for the above-mentioned deionization module was fabricated as follows, having approximately 3,263m 2 Activated carbon with specific surface area / g (average pore diameter is The total pore volume is 1.71㏄ / g) mixed with 0.1M NaCl aqueous solution and finely pulverized by Nanodisperser (ISA-N-10, Ilshin Autoclave, Korea) to make a flow electrode with an average particle size of activated ca...
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Abstract
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