Methods of treating nuclear hydroxyapatite materials
US5994609A · kind A · utility
9Cited by
13References
14Claims
0Family size
Inventor
Key dates
| Filing date | Dec 16, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Dec 16, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods are provided for treating liquid hazardous waste containing anionic radioactive or heavy metal materials by binding the hazardous waste to hydroxyapatite powder, drying and then cold or hot pressing the hydroxyapatite powder into a solid mass for storage or disposal. The methods are useful for treatment and storage of radioactive waste, anions, and heavy metals. Methods are also provided for treating high concentration liquid hazardous waste and liquid hazardous waste which does not contain materials known to decompose at high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.