Compound used for removing heavy metal ions and application thereof

Abstract

The invention discloses compound used for removing heavy metal ions. Compound structurally comprising functional groups capable of providing lone pair electrons is loaded on a polymer carrier and can form coordinate bonds with the heavy metal ions. The compound can remove heavy metal ions in traditional Chinese medication extract or industrial waste water and the like high-efficiently and rapidly, thereby having industrializing prospect.

Description

technical field [0001] The invention relates to a compound for removing heavy metal ions and its application. Background technique [0002] According to reports, the annual sales of the world's herbal medicine market is as high as 40 billion US dollars, and it is increasing at an annual rate of 10%. As a big country in the production of herbal medicines, due to the influence of heavy metal residues in traditional Chinese medicines, the total export value of traditional Chinese medicines currently only accounts for about 1% of the world's sales of herbal medicines. Heavy metal residue pollution has become a "bottleneck" for Chinese medicines to go global. The harm of heavy metals to organisms has attracted the attention of countries all over the world. At present, countries and regions that import Chinese medicinal materials and proprietary Chinese medicines have imposed strict requirements on the heavy metal content of Chinese medicinal materials and proprietary Chinese med...

AI Technical Summary

Problems solved by technology

[0008] There are more or less shortcomings in the above-mentioned methods for removing heavy metal ions in Chinese medicine extracts, which limit their promotion and application in actual production

[0009] For the membrane separation method, because 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

The composition of traditional Chinese medicine extract is very complex, which increases the chance of membrane contamination

[0010] 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 make the active ingredients in the Chinese medicine extract be extracted and taken away, which will seriously affect the efficacy of Chinese medicine.

These disadvantages have greatly restricted the application of solvent extraction separation method.

[0011] For the adsorption method, the effective components in the extract of traditional Chinese medicine are easier to be adsorbed, and the adsorption performance of heavy metal ions is poor, which greatly limits the application of the adsorption method.

At the same time, the regeneration cycle of the adsorbent is not easy to realize

[0012] 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.