Method for removing contaminant from a fluid stream
US11040307B2 · kind B2 · utility
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3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2017 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/708
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing at least one contaminant from a fluid stream by filtering the fluid stream with a filtration medium. The filtration medium includes an impregnate. The impregnate includes a surfactant such as sulfamic acid. The medium has from about 0.1 to about 25% by weight of impregnate. The method is useful for removing one or more volatile organic compounds, particularly formaldehyde, from the fluid stream. In some embodiments, the method includes removing at least two volatile organic compound contaminants from the fluid stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.