一种沸石载铁镧土壤砷污染修复剂的制备方法及其应用
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF CHINESE ACAD OF SCI
- Filing Date
- 2023-07-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing zeolite-based materials have low remediation efficiency, complex preparation process and high cost in soil arsenic pollution remediation, and are difficult to effectively stabilize arsenic-contaminated soil.
By preparing a zeolite-loaded iron-lanthanum soil arsenic remediation agent, a lanthanum-iron composite reactant was formed by mixing Fe3+ and La3+ solutions. This reactant was used to modify and combine with the zeolite, utilizing the affinity of iron and lanthanum to enhance the stabilization effect on arsenic. The operation was simplified by combining the process with an intermittent modification treatment station.
It achieves efficient stabilization of arsenic-contaminated soil, with a water-soluble arsenic reduction rate of up to 98%, greatly improving environmental safety. Moreover, the preparation method is simple and easy to implement, making it suitable for large-scale application.
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Figure CN117004395B_ABST