Targeted and long-lasting passivation material for soil cadmium immobilization, and preparation method and use thereof
US12201961B1 · kind B1 · utility
0Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2024 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Feb 14, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are a targeted and long-lasting passivation material for soil cadmium immobilization, and a preparation method and use thereof. In the disclosure, the passivation material is a mercaptosuccinic acid-intercalated calcium iron aluminum hydrotalcite, which is prepared by hydrothermal co-precipitation of a metal salt dispersion and an intercalation solution in an alkaline environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.