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Method for removing heavy metal ion by adopting chelate resin cooperative processing

A heavy metal ion, chelating resin technology, applied in chemical instruments and methods, pharmaceutical formulations, medical preparations containing active ingredients, etc. , the effect of easy removal

Inactive Publication Date: 2012-12-12
BEIJING OKEANOS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] There are more or less shortcomings in the above-mentioned methods for removing heavy metal ions in traditional Chinese medicine extracts, which limit their promotion and application in actual production
[0011] For the solvent extraction separation method, the solvent is easily lost during the extraction process and a large amount of energy consumption in the complexing agent and solvent regeneration process limits the application of this method.
At the same time, the organic solvents that must be used in the solvent extraction separation method will extract and take away the active ingredients in the Chinese medicine extract, which will seriously affect the efficacy of Chinese medicine.
These disadvantages have greatly restricted the application of solvent extraction separation method.
[0012] For the membrane separation method, since the separation function is realized by the membrane, membrane pollution and flux attenuation will always occur during use, so frequent cleaning and maintenance are required, which greatly limits the promotion and application of the membrane separation method
At the same time, the extremely complex composition of the Chinese medicine extract increases the chance of membrane contamination
[0013] For the ion exchange treatment method, the ion exchanger generally presents a certain acidity and alkalinity, which has a certain destructive effect on the active ingredients in the Chinese medicine extract; at the same time, the charge carried by the ion exchanger itself may also affect the extraction of Chinese medicine. The active ingredients in the liquid have an impact
This limits the application of the ion exchange method in the removal of heavy metal ions in traditional Chinese medicine.
[0014] For the adsorption method, the effective components in the extract of traditional Chinese medicine are easier to be adsorbed, and the heavy metal ions are difficult to be adsorbed, which greatly restricts the application of the adsorption method.
At the same time, the regeneration cycle of the adsorbent is not easy to realize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Contrasted with the "Green Industry Standards for the Import and Export of Medicinal Plants and Preparations", the preparation of Pb-containing 2+ 、Cu 2+ 、Cd 2+ , Hg 2+ Standard solutions with concentrations of 20mg / L, 40mg / L, 2mg / L, and 2mg / L. Weigh respectively 5 grams of D405 type resin produced by Jiangsu Suqing Group, D402 macroporous styrene chelating resin produced by Shanghai Huazhen Technology Co., Ltd., and D201 type resin produced by Hangzhou Zhengguang Resin Co., Ltd., mix and pour into 100 ml beaker. Accurate measurement of Pb 2+ 、Cu 2+ 、Cd 2+ , Hg 2+ Pour 50 mL of standard solutions with concentrations of 20 mg / L, 40 mg / L, 2 mg / L, and 2 mg / L into the beaker. After stirring vigorously for 90 minutes, the resin was removed by filtration, and the filtrate was measured for Pb by Varian 700 inductively coupled plasma emission spectrometry (ICP-AES). 2+ 、Cu 2+ 、Cd 2+ , Hg 2+ concentration. The results are as follows:

[0036] The heavy met...

Embodiment 2

[0039] Get 100 grams of commercially available licorice extract powder and dissolve it with 500 grams of water. Add SQ407 (styrene-based loaded iron) resin produced by Jiangsu Suqing Group, LS-3000 resin produced by Xi'an Lanshen Special Resin Co., Ltd., 330 resin produced by Anhui Sanxing Resin Technology Co., Ltd. and Shanghai Huazhen Technology Co., Ltd. Each 20 grams of the D402 macroporous styrene chelating resin produced by Co., Ltd., after stirring vigorously for 30 minutes, filtered and collected the filtrate.

[0040] Measure the content of lead, cadmium, copper, mercury and arsenic in the licorice aqueous solution before and after treatment with Varian 700 type inductively coupled plasma emission spectrometry (ICP-AES), the result is as follows:

[0041] The heavy metal elements determined

[0042] It can be seen that the content of heavy metal ions in the licorice solution co-treated by various chelating resins has been unable to be detected by inductively...

Embodiment 3

[0044] Take 1000 grams of commercially available isatidis extract powder and dissolve it with 5000 grams of water. Add SQ407 (styrene-based loaded iron) resin produced by Jiangsu Suqing Group, HCS101-1 resin produced by Tianjin Nankai Hecheng Chemical Factory, D201 resin produced by Hangzhou Zhengguang Resin Co., Ltd. and Zhengzhou Xidian Electric Power Co., Ltd. Each 50 grams of C900 type resin sold by Resin Sales Co., Ltd. was vigorously stirred for 90 minutes, filtered, and the filtrate was collected.

[0045] Measure the content of lead, cadmium, copper, mercury and arsenic in the licorice aqueous solution before and after treatment with Varian 700 type inductively coupled plasma emission spectrometry (ICP-AES), the result is as follows:

[0046] The heavy metal elements determined

[0047] It can be seen that the content of heavy metal ions in the Radix isatidis solution co-treated by various chelating resins has been unable to be detected by inductively coupled...

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PUM

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Abstract

The invention discloses a method for removing heavy metal ions by adopting chelate resin cooperative processing, wherein at least two kinds of chelate resins are added into a liquid needing to remove the heavy metal ions, and the chelate resin comprises selective arsenic-removing resin, selective mercury-removing resin, selective lead-removing resin and selective divalent metal (copper / nickel andthe like) ion-removing resin; more than two kinds of chelate resins specialized for removing a certain heavy metal ion are selected and organically combined to obtain the effect of efficiently, rapidly and conveniently removing the heavy metal ions in the liquid by utilizing the specific chelation of the functional groups of various modified chelate resins to different kinds of heavy metal ions. The method is simple and easy to use, is rapid in effect taking and is particularly applicable for removing the heavy metal ions in a traditional Chinese medicine extracting solution on site.

Description

technical field [0001] The invention relates to a method for removing heavy metal ions in liquid, in particular to a method for removing heavy metal ions by co-processing with chelating resin. Background technique [0002] The rapid development of my country's economy in the past 30 years has caused great damage to the ecological environment. There is no doubt that the cultivation and planting of traditional Chinese medicine has been greatly affected. Heavy metal residues, aflatoxins, pesticide residues, and microorganisms exceeding the standard are the main problems encountered by traditional Chinese medicine at present. At the same time, with the improvement of people's living standards and the popularization of the "people-oriented" concept, the safety of food and medicine has attracted more and more attention. In the formulation of laws and regulations on international medicinal plants and traditional medical products, developed countries such as the United States, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26A61K36/00
Inventor 高源许峰
Owner BEIJING OKEANOS TECH