一种具有螯合功能的重金属沉淀剂及其制备方法与应用
By preparing a heavy metal precipitant with chelating function, the problem of unsatisfactory treatment effect caused by different optimal pH values of different heavy metal ions is solved, and efficient precipitation removal of low concentration heavy metal ions is achieved, which is suitable for industrial applications in electroplating, petrochemical and environmental protection fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PAIRUI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2024-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
When using existing chemical precipitation methods to treat heavy metal wastewater, the optimal pH value for the formation of hydroxides varies depending on the heavy metal ions, resulting in unsatisfactory treatment effects and secondary pollution.
Using polyacrylonitrile as raw material, a heavy metal precipitant with chelating function was prepared through amine oximeization, activation and nucleophilic substitution reactions. The activation reaction was introduced during the preparation process, which improved the reactivity and the exposure rate of functional groups, forming a highly active polyamine oxime intermediate, thereby enhancing the adsorption effect on low concentrations of heavy metal ions.
The prepared heavy metal precipitant has the characteristics of fast adsorption speed, large adsorption capacity, high strength and easy separation. It has a good precipitation and removal effect, especially for low concentration heavy metal ions. It is suitable for the treatment of heavy metal ion wastewater in electroplating, petrochemical and environmental protection fields and is easy to industrialize.