Macromolecular resin and preparation method and application thereof

Abstract

The invention provides macromolecular resin, which is polystyrene macromolecule resin prepared by performing reactions for forming a crosslinked benzyl sulfydryl compound, a benzyl iminodiacetic acid compound and a benzylamine methylene phosphate compound and by loading ferric ions on the benzylamine methylene phosphate. The invention also provides a method for preparing the resin, and application of the resin in removing heavy metals from Chinese medicament extracting solution and wastewater such as electroplating wastewater. The resin has the advantages of easily purchasable raw materials and simple preparation method, can efficiently, quickly and conveniently remove the heavy metal elements in various existing forms contained in the Chinese medicament extracting solution and wastewatersuch as electroplating wastewater, is environment-friendly and has good industrial prospect.

Description

technical field [0001] The invention relates to the technical field of polymer resins, in particular to a cross-linked benzyl mercaptolation, benzyl imine diacetoxylation, benzylamino methylene phosphorylation and ferric ion loaded on benzylamine Polystyrene polymer resin on the base methylene phosphoric acid group, its preparation method and application. Background technique [0002] In the past 30 years, with the rapid development of my country's economy, the problem of environmental pollution has become increasingly serious, especially the residue of heavy metals is one of the most serious forms of pollution in our country. Heavy metal pollution refers to environmental pollution caused by heavy metals or their compounds, mainly due to human factors such as mining, exhaust emissions, sewage irrigation, and the use of heavy metal products. After heavy metals pollute soil, air and water, they will enter the food chain and eventually enter the human body. And because of the...

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Problems solved by technology

[0006] Membrane separation method, because its separation function depends on 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 membrane separation method. The unusually complex composition of the extract increases the chances of membrane fouling

[0007] The ion exchangers used in the ion exchange treatment generally show 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 active ingredients in

This limits the application of the ion exchange method in the removal of heavy metal ions in traditional Chinese medicine.

[0008] The solvent extraction separation method is prone to solvent loss during the extraction process, and consumes a lot of energy in the process of complexing agent and solvent regeneration. At the same time, organic solvents must be used in the solvent extraction separation method, which will extract the traditional Chinese medicine extract The active ingredients in the traditional Chinese medicine seriously affect the efficacy of traditional Chinese medicine, so the application of solvent extraction separation method is greatly restricted

[0009] The adsorption method is easy to adsorb the active ingredients in the extract of traditional Chinese medicine, but it is difficult to adsorb heavy metal ions, so the application of the adsorption method is greatly limited.

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