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Electrodialysis micropump

A technology of electrodialysis and micropump, which is applied in the field of analysis, can solve problems such as unfavorable operator safety, achieve high current efficiency, facilitate sealing and operation stability, and have remarkable effects

Active Publication Date: 2019-11-29
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high pressure is not conducive to the safety of operators, especially in environments with high humidity

Method used

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  • Electrodialysis micropump
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  • Electrodialysis micropump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of electrodialysis micropump, see figure 1 As shown, it includes a fastening steel plate, an electrolytic cell body and a regenerated liquid channel, and the fastening steel plate includes a first fastening steel plate 1 and a second fastening steel plate 2 oppositely arranged; the electrolytic cell body includes a first Electrolytic cell body 3, an intermediate electrolytic cell body 4 and a second electrolytic cell body 5; the first electrolytic cell body 3, the intermediate electrolytic cell body 4 and the second electrolytic cell body 5 are clamped between the fastening steel plates between; the regeneration liquid channel includes a first channel A and a second channel C; an intermediate channel B is set between the first channel A and the second channel C; the first channel A, the The middle channel B and the second channel C are arranged between the fastening steel plates; wherein, the junction between the electrolytic cell body and the regeneration liquid...

Embodiment 2

[0067] In this embodiment, an electrodialysis micropump, see figure 2 As shown, its structure is basically the same as that of Example 1, the difference is only that: the electrodialysis micropump is provided with a cation exchange membrane 7 and an anion exchange membrane 9; the middle channel B is filled with ion exchange resin. Such as figure 2 As shown, between the first passage A and the middle passage B, a porous cathode 6, a cation exchange membrane 7 and a bipolar membrane 8 are arranged layer by layer from the outside to the inside, wherein the anode membrane surface 801 of the bipolar membrane faces outward, and the bipolar membrane Polar membrane negative membrane surface 802 faces inward; Porous anode 10, anion exchange membrane 9 and bipolar membrane 8 are arranged layer by layer between the middle channel B and the second channel C from outside to inside, wherein the bipolar membrane positive membrane Face 801 faces inward, and negative membrane face 802 of th...

Embodiment 3

[0070] In this embodiment, the electrodialysis micropump in Embodiment 1 of the present invention is used, pure water is used as the regeneration liquid, and the regeneration liquid flows in the regeneration liquid channels (the first channel A and the second channel C) on both sides at a flow rate of 0.1mL / min, and under the action of the electric field, water is generated in the middle channel B, that is, a microfluidic liquid is generated. Record the flow rate and current of the microflow liquid generated by the electrodialysis micropump, such as image 3 shown.

[0071] image 3 It is the relationship diagram between the flow rate and the current of the electrodialysis micropump in Example 3 of the present invention.

[0072] according to image 3 It can be seen that the flow rate of the microfluidic liquid generated by the electrodialysis micropump has a linear relationship with the applied current. Therefore, the present invention can control the flow rate of the mic...

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Abstract

The invention discloses an electrodialysis micropump, which comprises a fastening steel plate, an electrolytic cell body and a regeneration liquid channel, wherein the fastening steel plate comprisesa first fastening steel plate and a second fastening steel plate which are oppositely arranged; the electrolytic cell body comprises a first electrolytic cell body, an intermediate electrolytic cell body and a second electrolytic cell body; the electrolytic cell body is arranged between the fastening steel plates; the regeneration liquid channel comprises a first channel and a second channel; an intermediate channel is arranged between the regeneration liquid channels; the regeneration liquid channel and the intermediate channel are arranged between the fastening steel plates; a negative poleor a positive pole is arranged at the junction between the electrolytic cell body and the regeneration liquid channel; and a bipolar film is arranged between the regeneration liquid channel and the intermediate channel. The electrodialysis micropump can realize accurate driving of micro-fluid by an electric field, and can be used for microfluidic analysis, such as flow injection analysis, microfluidic chips, capillary ion chromatography and other systems.

Description

technical field [0001] The invention relates to the technical field of analysis, in particular to an electrodialysis micropump. Background technique [0002] The micropump is the "heart" of the microanalysis system, and it is the power source for microfluid delivery, and its function is to transport water (or other solutions) to the downstream analysis system. As an important micro-executing component, micropumps are not only widely used in microfluidic analysis, such as flow injection analysis, microfluidic chip, capillary or nanoliter liquid chromatography, capillary ion chromatography, etc., but also widely used in Drug delivery, blood transportation, DNA synthesis, electronic cooling system, micro-satellite propulsion system and other fields. Whether the flow rate is stable or accurate is directly related to the reproducibility of the analysis results. But micro-fluid actuation is still a challenge. [0003] The most common drive methods for liquid delivery are piston...

Claims

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Application Information

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IPC IPC(8): B01D61/42
CPCB01D61/422
Inventor 杨丙成章飞芳陆逸菲林诗源孙玥
Owner EAST CHINA UNIV OF SCI & TECH