Enhanced kill of microorganisms
US10925282B2 · kind B2 · utility
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13References
25Claims
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Key dates
| Filing date | Apr 30, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is provided for the time dependent reduction and kill of cellular bacteria in a fluid by sequential exposure to nitrites and a low concentration of biocide. Oilfield water containing sulfate-reducing bacteria can be supplied with a timed sequential exposure of nitrite and biocide. The timed sequential addition of the biocide following exposure to the nitrite provides enhanced kill of the sulfate-reducing bacteria at concentrations of biocide that are lower than would be possible using simultaneous addition of these materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.