Biofilm control
US4929365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Sep 18, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/50
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention provides a method for the removal of biofilms composed of microorganisms from submerged surfaces in an aqueous medium comprising contacting said biofilm with an aqueous stabilized chlorine dioxide and at least one nutrient source, wherein said nutrient source is provided in an amount effective to result in the generation of one or more acidic compounds by said biofilm, and the aqueous stabilized chlorine dioxide is provided in an amount sufficient, when activated by said one or more acidic compounds generated by said microorganisms, to kill a sufficient number of microorganisms in the biofilm to result in the biofilm's removal. Optionally a second biocide may be provided with or after the nutrient source to kill any microorganisms released from the biofilm during its removal and thereby inhibit the reformation of the biofilm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.