Method for extraction and surfactant enhanced subsurface contaminant recovery
US9895730B2 · kind B2 · utility
1Cited by
78References
33Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods and compositions for removing contaminants from soil and groundwater by extracting the contaminants and assisting the extraction by provision of an oxidant introduced prior to or simultaneously with a surfactant into the subsurface. Extractable contaminant can be extracted from the subsurface. The amount and/or distribution of contaminant in the subsurface can be characterized. The extracting of contaminant and the introducing of oxidant and surfactant can be coordinated to reduce contaminant to a target amount. A portion of the contaminant can be oxidizable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.