Nanoparticles for the destructive sorption of biological and chemical contaminants
US6057488A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/404
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for destroying a target component, such as hydrocarbons, halogenated hydrocarbons, diethyl-4-nitrophenylphosphate (paraoxon), 2-chloroethyl ethyl sulfide (2-CEES), dimethylmethylphosphonate (DMMP), bacteria such as Bacillus Cereus, Bacillus Globigii, Chlamydia and/or Rickettsiae, fungi and viruses, by contacting the target component with an adsorbent such as MgO, CaO, TiO.sub.2, ZrO.sub.2, FeO, V.sub.2 O.sub.5, V.sub.2 O.sub.3, Mn.sub.2 O.sub.3, Fe.sub.2 O.sub.3, NiO, CuO, Al.sub.2 O.sub.3, ZnO and mixtures thereof wherein the adsorbent contains either reactive atoms selected from the group consisting of halogens and alkali metals stabilized on the surfaces of the adsorbent or ozone and wherein the contacting is conducted at a temperature of -40 to 600.degree. C. for a time period of at least about 4 seconds. The adsorbent may be in the form of solids having a size of about 3 to 20 nanometers or in the form of pellets having a size of at least 1 millimeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.