Preparation method and application of amorphous zero-valent iron sulfide
By preparing amorphous zero-valent iron sulfide, the problem of simultaneously removing cadmium and arsenic compound pollution from water in existing technologies has been solved, achieving efficient and stable pollutant removal and retention.
Patent Information
- Application Number
- CN202610750260.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for efficiently removing cadmium and arsenic contamination from water simultaneously. Traditional methods suffer from high risk of secondary pollution, high cost, poor selectivity, and weak resistance to interference.
Phosphate was used as an iron salt complexing agent to regulate the crystal form of zero-valent iron and introduce phosphate ions. After sulfidation modification, amorphous sulfidated zero-valent iron was prepared, forming an amorphous structure and a sulfidation shell, which enhanced the surface active sites and negative charge.
It achieves efficient removal of cadmium and arsenic combined pollutants from water bodies, enhances the stability of cadmium storage, reduces the risk of cadmium leaching, avoids secondary pollution, and maintains high efficiency removal capacity under combined pollution conditions.
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