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Method for recovering copper ions in acidic copper printed circuit board waste etching liquor and application

A technology for printed circuit boards and etching waste liquids, applied in chemical instruments and methods, circuits, cyanide reaction preparation, etc., can solve problems such as research reports on the application of negative electrode materials for lithium ion batteries that have not yet been seen, and promote a virtuous cycle. Electrochemical performance, simple process effect

Active Publication Date: 2019-01-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Copper phenylalanine combines the advantages of organic / inorganic materials at the molecular level, and can be used in the fields of biomaterials research, medicine and medical treatment, etc., but it has not been reported as an anode material for lithium-ion batteries.

Method used

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  • Method for recovering copper ions in acidic copper printed circuit board waste etching liquor and application
  • Method for recovering copper ions in acidic copper printed circuit board waste etching liquor and application
  • Method for recovering copper ions in acidic copper printed circuit board waste etching liquor and application

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A kind of recovery method of copper ion in acidic copper printed circuit board etching waste liquid, concrete steps are as follows:

[0025] (1) Dissolve sodium hydroxide and phenylalanine in distilled water, stir to obtain solution A, the concentration of sodium hydroxide in solution A is 33g / L, and the concentration of phenylalanine is 63g / L;

[0026] (2) Use a sodium hydroxide solution with a concentration of 0.05mol / L to adjust the pH value of the acidic copper printed circuit board etching waste solution to 0.2, and obtain solution B after stirring;

[0027] (3) According to the ratio of solution A:solution B volume ratio of 2:1, slowly add solution B dropwise to solution A to form a blue precipitate, wash with distilled water for 5 times, and then wash with alcohol for 8 times, Recover after drying to obtain blue copper phenylalanine crystal powder.

[0028] Adopt SEM to observe the microscopic appearance of the phenylalanine copper that this embodiment reclaims ...

Embodiment 2

[0031] A kind of recovery method of copper ion in acidic copper printed circuit board etching waste liquid, concrete steps are as follows:

[0032] (1) Dissolve sodium hydroxide and phenylalanine in distilled water, stir to obtain solution A, the concentration of sodium hydroxide in solution A is 16g / L, and the concentration of phenylalanine is 45g / L;

[0033] (2) Use a sodium hydroxide solution with a concentration of 2 mol / L to adjust the pH value of the acidic copper printed circuit board etching waste solution to 2, and obtain solution B after stirring;

[0034] (3) According to the ratio of solution A:solution B volume ratio of 6:1, slowly add solution B dropwise to solution A to form a blue precipitate, wash with distilled water for 6 times, and then wash with alcohol for 6 times, Recover after drying to obtain blue copper phenylalanine crystal powder.

[0035] With the blue phenylalanine copper crystal powder recovered in this embodiment as the negative electrode activ...

Embodiment 3

[0037] A kind of recovery method of copper ion in acidic copper printed circuit board etching waste liquid, concrete steps are as follows:

[0038] (1) Dissolve sodium hydroxide and phenylalanine in distilled water, and stir to obtain solution A. The concentration of sodium hydroxide in solution A is 25g / L, and the concentration of phenylalanine is 16g / L;

[0039] (2) Use a sodium hydroxide solution with a concentration of 10mol / L to adjust the pH value of the acidic copper printed circuit board etching waste solution to 1, and obtain solution B after stirring;

[0040] (3) According to the ratio of solution A: solution B volume ratio of 1:1, slowly add solution B to solution A dropwise to form a blue precipitate, wash with distilled water for 7 times, and then wash with alcohol for 7 times. Recover after drying to obtain blue copper phenylalanine crystal powder.

[0041] With the blue phenylalanine copper crystal powder recovered in this embodiment as the negative electrode ...

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Abstract

The invention discloses a method for recovering copper ions in acidic copper printed circuit board waste etching liquor and application. Copper ions in the acidic copper printed circuit board waste etching liquor are recovered in a form of copper phenylalanine with high added economic value by a liquid deposition method, the recovered copper phenylalanine serving as a negative pole active materialis applied to a lithium ion battery, and the charge and discharge performance and cycling stability of the product are tested by a constant current charging / discharging method. According to the method, the copper ions in acidic copper printed circuit board waste etching liquor can be effectively recovered, waste materials are changed into things of value, the environmental pollution is reduced, green production of the battery industry and sustainable development of ecological environment can be facilitated, and the preparation process is simple, excellent in repeatability and favorable for batch production.

Description

technical field [0001] The invention relates to the recovery and application of copper ions in acidic copper printed circuit board etching waste liquid, and belongs to the fields of environmental pollution control and development and research of new energy materials. Background technique [0002] The copper printed circuit board can corrode the exposed metal copper according to the pre-designed circuit diagram through the etching process, and the remaining copper after etching is the finished copper circuit board. During the etching process, the concentration of copper ions in the etching solution continues to increase, and the corrosion efficiency of the etching solution also decreases. When the concentration of copper ions in the etching solution reaches saturation, the etching solution can no longer be used for the preparation of copper printed circuit boards. , and discharged as waste. Acidic copper printed circuit board etching waste has been included in the "National ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/00C07C229/36H01M4/60H01M10/0525
CPCH01M4/60H01M10/0525C07C227/00C07C229/36Y02E60/10
Inventor 侯宏英姚远代志鹏余成义李栋栋
Owner KUNMING UNIV OF SCI & TECH
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