Methods for controlling acetoclastic microorganisms in acetogenic syngas fermentation processes
US9976159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2014 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Methods are disclosed for controlling the population of acetoclastic microorganisms in a process for the bioconversion of gas substrate comprising at least one of CO and a mixture of CO2 and hydrogen to at least one oxygenated organic compound by contact of said gas substrate under acidic, anaerobic fermentation conditions in a bioreactor containing an aqueous fermentation broth having a population of at least one acetogenic microorganism for bioconverting said gas substrate to at least one acetogenic oxygenated organic compound, said fermentation zone defining a head space, said methods comprising continuously or intermittently controlling the partial pressure of carbon dioxide in the head space to provide a desired population ratio of acetoclastic microorganisms to acetogenic microorganisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.