乙二胺四亚甲基膦酸改性淀粉及其制备方法和应用
By grafting starch with ethylenediaminetetramethylenephosphonic acid to form a phosphonate ester bond and hydrogen bond network, the problem of low removal rate of modified starch in strongly acidic wastewater is solved, and the simultaneous and efficient removal of multiple metals is achieved, which is suitable for industrial wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HENAN JIE SURFACE NEW MATERIALS CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing modified starch heavy metal scavengers perform well in neutral or alkaline environments, but their removal rate decreases in strongly acidic wastewater, and the pH value of the wastewater needs to be adjusted, which limits their application.
By grafting starch with ethylenediaminetetramethylenephosphonic acid under acid catalysis to form a phosphonate ester bond and hydrogen bond network, the hydrophilicity and active sites are enhanced, and a modified starch capable of efficiently removing heavy metals in a strongly acidic environment is prepared.
It achieves simultaneous and efficient removal of multiple metals in highly acidic wastewater without the need for pre-adjustment of wastewater pH, significantly improving the heavy metal removal rate.
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