Microbial control of hydrogen sulfide production by sulfate reducing bacteria
US4879240A · kind A · utility
4Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Jul 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/932
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Mutant strains of Thiobacillus denitrificans are used to inoculate an environment containing sulfate and sulfate-reducing bacteria to control the net formation of sulfide. The mutant strains are tolerant of significant concentrations of soluble sulfides and may also be tolerant of glutaraldehyde which is a biocide effective against sulfate-reducing bacteria and which may also be added to the environment. One environment for use of the invention is in a water injection well for the secondary production of petroleum and another is the control of sulfide production in the treatment of waste materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.