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Metal ion separation and enrichment system and method for separating and enriching cobalt (II)

A technology for separation and enrichment of metal ions, applied in the field of water treatment, to achieve the effect of simple raw materials, easy operation, and low price

Active Publication Date: 2022-02-08
JIYUAN VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation of ternary associations reported above enriches Co 2+ , can also achieve better results, but both need to add a considerable amount of salt

Method used

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  • Metal ion separation and enrichment system and method for separating and enriching cobalt (II)
  • Metal ion separation and enrichment system and method for separating and enriching cobalt (II)
  • Metal ion separation and enrichment system and method for separating and enriching cobalt (II)

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Experimental program
Comparison scheme
Effect test

Embodiment

[0049] 1 Main instruments and reagents

[0050] 1.1 Instrument

[0051] TAS-990 atomic absorption spectrophotometer (Beijing General Analysis General Instrument Co., Ltd.), T6 UV-visible spectrophotometer (Beijing General Analysis General Instrument Co., Ltd.), XYD2-60-H pure water meter (Beijing Xiangshunyuan Technology Co., Ltd.), 25mL colorimetric tube. The working conditions of the atomic absorption spectrometer are shown in Table 1.

[0052] Table 1 Working conditions of atomic absorption spectrometer

[0053]

[0054]

[0055] 1.2 Reagents

[0056] co 2+ Standard stock solution (National Institute of Metrology): 1000μg / mL; Co 2+ Standard solution: 100μg / mL, made of Co 2+ The standard stock solution is diluted step by step; Phen solution: 1.5g / L; potassium thiocyanate solution: 0.1mol / L; other metal ion standard solutions and buffer solutions with different pH values ​​(pH 1.0~10.0) (Chang Wenbao, Li Kean .Concise Analytical Chemistry Handbook [M]. Beijing: P...

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Abstract

The invention provides a method for separating and enriching cobalt (II), which comprises the following steps: mixing an aqueous solution containing metal cobalt ions with a metal ion separation and enrichment system for reaction to obtain an aqueous solution after separation and enrichment of cobalt (II), wherein the metal ion separation and enrichment system comprises an organic compound containing a pyridine structure and an anion complexing agent. Compared with the prior art, the method has the advantages that an organic compound-anion complexing agent-water system liquid-solid separation system containing a pyridine structure is adopted, raw materials are simple, operation is convenient, the price is low, quantitative separation of Co < 2 + > and common metal ions such as Cd < 2 + >, Fe < 3 + >, Zn < 2 + >, Ni < 2 + >, Pb < 2 + >, Al < 3 + >, Ag < + >, Ca < 2 + > and Mg < 2 + > can be achieved, and under the optimal experiment condition, the Co < 2 + > separation efficiency can reach 100%.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a metal ion separation and enrichment system and a method for separating and enriching cobalt (II). Background technique [0002] Cobalt is one of the trace metal elements necessary for the human body. Cobalt is known as vitamin B 12 Coenzymes and coenzymes play an important physiological role in the human body, but excessive intake of cobalt can cause harm to human health, such as respiratory irritation, skin allergies, cardiomyopathy and other toxic reactions. According to the environmental quality standard of surface water in my country, the maximum allowable concentration is 1.0 mg / L. Therefore, it is necessary to study the separation and enrichment of heavy metal ion cobalt. On the one hand, the separation and enrichment of the toxic heavy metal ions Co 2+ Removal reduces environmental pollution. On the other hand, as a pretreatment technology, it elimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C22B3/00C22B3/46C02F101/20
CPCC02F1/54C02F1/5236C22B23/0469C22B3/46C02F2101/20Y02P10/20
Inventor 左国强郑伟崔海燕侯芳周鸿燕王海珍卢鑫宋鋆武媛媛
Owner JIYUAN VOCATIONAL & TECHN COLLEGE