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A stacked three-dimensional rocking chair capacitive deionization device and deionization method

A capacitive deionization and stacking technology, applied in the field of water treatment, can solve the problems of small treatment capacity and low efficiency, and achieve the effect of large treatment capacity, expanding adsorption space, and realizing simple and controllable expansion.

Active Publication Date: 2022-05-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a stacked three-dimensional rocking chair capacitive deionization device and deionization method, aiming to solve the technical problems in the prior art that large-scale concentration and purification cannot be carried out continuously, the processing volume is small, and the efficiency is low

Method used

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  • A stacked three-dimensional rocking chair capacitive deionization device and deionization method
  • A stacked three-dimensional rocking chair capacitive deionization device and deionization method
  • A stacked three-dimensional rocking chair capacitive deionization device and deionization method

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preparation example Construction

[0064] As a further illustration, in order to obtain an electrode material that can improve the adsorption performance of the capacitive deionization device, the preparation method of the material for the Ag@C three-dimensional electrode includes the steps:

[0065] S1, mix Aspergillus niger and water in a solid-liquid ratio of 1-5g:50ml to obtain Aspergillus niger solution;

[0066] S2, successively adding 1-3g m-phenylenediamine and 0.5-5g ammonium persulfate to the Aspergillus niger solution to react, and after the reaction for 1-8h, the suction molding is performed, and then the material obtained after the suction filtration is subjected to Freeze-drying to obtain polym-phenylenediamine@Aspergillus niger composite material;

[0067] S3, placing the poly-m-phenylenediamine@Aspergillus niger composite in 500-3000ppm AgNO 3 The solution is allowed to stand, and then drying treatment and carbonization treatment at 400-1000° C. are performed in sequence to obtain the material ...

Embodiment 1

[0082] Material preparation of Ag@C three-dimensional electrode: 3g of Aspergillus niger was placed in a 100mL beaker, 50mL of deionized water was added, 2g of m-phenylenediamine was added, and 2.202g of ammonium persulfate was added. After freeze-drying, the obtained polym-phenylenediamine@A. niger composites were placed in 2000ppm AgNO 3 The solution was left standing for 24 h, dried at 60 °C and then carbonized at 800 °C to obtain the material of Ag@C three-dimensional electrode.

[0083] The internal structure and element distribution of the prepared Ag@C three-dimensional electrode material can be referred to Figure 9 (converted from the color picture) to understand, it can be seen that its interior has a filamentous structure and has large voids for ion adsorption; in addition, the specific values ​​of the element distribution of the Ag@C three-dimensional electrode material are as follows:

[0084]

[0085]

Embodiment 2

[0087] like figure 1 , image 3 , Figure 4 and Figure 7 As shown, a stacked three-dimensional rocking chair type capacitive deionization device includes a main body and accessories. The main body includes a chamber mechanism 1 , a cation exchange membrane 3 , a current collector 16 , and a silica gel gasket 2 .

[0088] The chamber mechanism 1 further includes two terminal chamber mechanisms located at both ends of the stacking direction. In addition, the above accessories are mainly fixed installation parts, including silicone tubes and screws.

[0089] A silicone gasket 2 is arranged on the right side of the left terminal chamber mechanism, a silicone gasket 2 is arranged on the left side of the right terminal chamber mechanism, and a commercial cation exchange membrane 3 is arranged between the two silicone gaskets 2; Among them, each terminal chamber mechanism, each silica gel gasket 2 and each cation exchange membrane 3 have the same size, and the outer edges are fl...

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Abstract

The present invention provides a stacked three-dimensional rocking chair capacitive deionization device, which includes a plurality of chamber mechanisms arranged in sequence along the stacking direction, the chamber mechanism includes a body, which is set on the body and penetrates along the stacking direction In the cavity of the body, a fixing part for fixing the three-dimensional electrode protrudes from the inner wall of the cavity; sealing plates are provided on the free end surfaces of the cavity at both ends of the stacking direction; adjacent Among the three-dimensional electrodes, at least one is a block-shaped Ag@C three-dimensional electrode; a cation exchange membrane is arranged between two adjacent chamber mechanisms; each chamber mechanism is also provided with a The current collector electrically connected to the three-dimensional electrode protrudes from the outside of the body, and the body is also provided with a water inlet pipe and a water outlet pipe communicating with the cavity. The present invention converts the chamber The current direction of the collector fluid in the mechanism can continuously carry out large-scale concentration and purification, and has a large processing capacity and high efficiency.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a stacked three-dimensional rocking-chair capacitive deionization device and a deionization method. Background technique [0002] Capacitive Deionization (CDI) is a new method for removing pollutants from wastewater. Capacitive deionization technology is to apply a low voltage (usually about 1.2V) to a pair of electrodes, and use electrostatic action or chemical reaction to store ions in wastewater at the electrode / electrolyte interface to form an electric double layer or electrode material, and then pass the disconnection. Regeneration is achieved by means of electricity or by reversing the electric field. Although it has the advantages of low cost and no secondary pollution, however, the traditional capacitive deionization device requires a separate regeneration step to release the ions adsorbed on the electrode, and cannot achieve continuous operation of adsorption / regeneration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/469
CPCC02F1/4691C02F1/46109C02F2001/46133C02F2201/46115C02F2001/46152
Inventor 王海鹰贺颖捷柴立元严律己金林锋杨志辉刘恢唐崇俭
Owner CENT SOUTH UNIV
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